{"id":1979,"date":"2023-07-06T17:19:33","date_gmt":"2023-07-06T15:19:33","guid":{"rendered":"https:\/\/mnwell.com\/?p=1979"},"modified":"2023-07-06T17:22:23","modified_gmt":"2023-07-06T15:22:23","slug":"nine-common-defects-and-prevention-schemes-of-low-pressure-die-casting","status":"publish","type":"post","link":"https:\/\/mnwell.com\/ja\/nine-common-defects-and-prevention-schemes-of-low-pressure-die-casting\/","title":{"rendered":"\u4f4e\u5727\u30c0\u30a4\u30ab\u30b9\u30c8\u92f3\u9020\u306b\u3088\u304f\u3042\u308b9\u3064\u306e\u6b20\u9665\u3068\u9632\u6b62\u7b56"},"content":{"rendered":"<p class=\"has-link-color 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\u53cd\u5fdc\u6027\u7d30\u5b54<\/h5>\n\n\n\n<p><\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u6c17\u5b54\u306f\u3001\u92f3\u578b\u58c1\u3068\u92f3\u7269\u3068\u306e\u63a5\u89e6\u9762\u306b\u5747\u4e00\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u3002\u6c17\u5b54\u306e\u8868\u9762\u306f\u5e73\u6ed1\u3067\u3001\u9280\u767d\u8272\uff08\u92f3\u92fc\uff09\u3001\u91d1\u5c5e\u5149\u6ca2\u307e\u305f\u306f\u6697\u8272\u3067\u3042\u308b\u3002\u53cd\u5fdc\uff1a\u92f3\u578b\u3001\u4e2d\u5b50\u3001\u30b3\u30fc\u30eb\u30c9\u30a2\u30a4\u30a2\u30f3\u3001\u5857\u6599\u306a\u3069\u306b\u306f\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6c34\u3068\u53cd\u5fdc\u3057\u3066\u30ac\u30b9\u3092\u767a\u751f\u3059\u308b\u7269\u8cea\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3002 <\/p>\n\n\n\n<h5 class=\"wp-block-heading\">(3) \u4fb5\u5165\u6027\u6c17\u5b54<\/h5>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b54\u306f\u92f3\u7269\u306e\u4e0a\u90e8\u306b\u5206\u5e03\u3057\u3001\u5b54\u306f\u5927\u304d\u304f\u6ed1\u3089\u304b\u3067\u3042\u308b\u3002\u4fb5\u5165\uff1a\u30ad\u30e3\u30d3\u30c6\u30a3\u5185\u306e\u30ac\u30b9\u304c\u92f3\u578b\u5916\u306b\u6392\u51fa\u3055\u308c\u305a\u306b\u92f3\u7269\u5185\u306b\u4fb5\u5165\u3059\u308b\u3053\u3068\u3002 <\/p>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3.\u6c17\u5b54\u5f62\u6210\u30e1\u30ab\u30cb\u30ba\u30e0<\/h4>\n\n\n\n<p>\u4f4e\u5727\u92f3\u9020\u306e\u92f3\u578b\u306f\u57fa\u672c\u7684\u306b\u5bc6\u9589\u3055\u308c\u3066\u304a\u308a\u3001\u6eb6\u878d\u91d1\u5c5e\u304c\u92f3\u578b\u3092\u6e80\u305f\u3059\u30b9\u30d4\u30fc\u30c9\u304c\u901f\u304f\u3001\u30ac\u30b9\u304c\u6392\u51fa\u3055\u308c\u308b\u6642\u9593\u304c\u306a\u3044\u305f\u3081\u3001\u888b\u304c\u92f3\u7269\u306b\u5b54\u3084\u30d4\u30f3\u30db\u30fc\u30eb\u3092\u5f62\u6210\u3059\u308b\u3002 <\/p>\n\n\n\n<ul>\n<li>\u6eb6\u6e6f\u4e2d\u306e\u6eb6\u5b58\u30ac\u30b9\u306e\u6790\u51fa\u5b54\uff08\u30d4\u30f3\u30db\u30fc\u30eb\uff09\u3001\u91d1\u5c5e\u306e\u6eb6\u89e3\u4e2d\u306b\u542b\u307e\u308c\u308b\u30ac\u30b9\u3001\u6db2\u4f53\u91d1\u5c5e\u304c\u51b7\u5374\u3055\u308c\u3001\u51dd\u56fa\u3059\u308b\u3068\u304d\u3001\u30ac\u30b9\u306e\u6eb6\u89e3\u5ea6\u306e\u4f4e\u4e0b\u306b\u3088\u308a\u30ac\u30b9\u304c\u6790\u51fa\u3057\u3001\u305d\u308c\u3092\u9664\u53bb\u3059\u308b\u306e\u304c\u9045\u3059\u304e\u308b\u305f\u3081\u3001\u92f3\u7269\u306b\u5b54\u304c\u751f\u3058\u308b\u3002\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u6e6f\u4e2d\u306e\u30ac\u30b9\u306f\u4ecb\u5728\u7269\u304c\u591a\u304f\u3001\u7cbe\u932c\u52b9\u679c\u304c\u4f4e\u304f\u3001\u92f3\u7269\u306e\u51dd\u56fa\u901f\u5ea6\u304c\u9045\u3044\u3002<\/li>\n\n\n\n<li>\u6fe1\u308c\u305f\u4e2d\u5b50\u3001\u5857\u6599\u3001\u8868\u9762\u306e\u6c5a\u308c\u305f\u51b7\u9244\u3001\u6ce8\u6e6f\u30fb\u52a0\u71b1\u5f8c\u306b\u767a\u751f\u3059\u308b\u30ac\u30b9 - \u53cd\u5fdc\u6027\u6c17\u5b54\uff08\u76ae\u4e0b\u6c17\u5b54\uff09\u3001\u92f3\u578b\u58c1\u6750\u3068\u6db2\u4f53\u91d1\u5c5e\u307e\u305f\u306f\u6db2\u4f53\u91d1\u5c5e\u5185\u90e8\u306e\u5316\u5b66\u53cd\u5fdc\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u308b\u6c17\u5b54\u3002 <\/li>\n\n\n\n<li>\u30ad\u30e3\u30d3\u30c6\u30a3\u5185\u306e\u30ac\u30b9\u306e\u92f3\u578b\u5916\u3078\u306e\u6392\u51fa\u304c\u9593\u306b\u5408\u308f\u306a\u3044\u30fb\u30fb\u30fb\u92f3\u578b\u3084\u4e2d\u5b50\u306e\u6392\u6c17\u4e0d\u826f\u306a\u3069\u3001\u92f3\u9020\u5de5\u7a0b\u8a2d\u8a08\u306b\u7121\u7406\u304c\u3042\u308b\u5834\u5408\u3084\u3001\u4e0d\u6ce8\u610f\u306a\u64cd\u4f5c\u306b\u3088\u308b\u4fb5\u5165\u5b54\uff08\u5358\u767a\u306e\u5927\u304d\u306a\u5b54\uff09\u3001\u6ce8\u6e6f\u6642\u306b\u30ac\u30b9\u5b54\u304c\u3075\u3055\u304c\u308c\u308b\uff08\u6ce8\u6e6f\u901f\u5ea6\u304c\u901f\u3059\u304e\u308b\uff09\u3068\u3001\u30ad\u30e3\u30d3\u30c6\u30a3\u5185\u306e\u30ac\u30b9\u304c\u92f3\u7269\u5185\u306b\u6ede\u7559\u3057\u3066\u767a\u751f\u3059\u308b\u3002 <\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">4.\u4e88\u9632\u7b56<\/h4>\n\n\n\n<p>\u88fd\u932c\u4f5c\u696d\u898f\u5247\u3092\u53b3\u5b88\u3057\u3001\u91d1\u5c5e\u6db2\u306e\u5438\u5165\u3092\u907f\u3051\u3001\u6ce8\u610f\u6df1\u304f\u30ac\u30b9\u629c\u304d\u3092\u884c\u3046\u3002\u6ef2\u51fa\u6c17\u5b54\u306e\u9632\u6b62<\/p>\n\n\n\n<ol>\n<li>\u91d1\u5c5e\u539f\u6599\u3084\u30ea\u30b5\u30a4\u30af\u30eb\u6750\u306f\u3001\u4e7e\u71e5\u3057\u3066\u3044\u3066\u3001\u9306\u3084\u6cb9\u306a\u3069\u304c\u306a\u304f\u3001\u4f7f\u7528\u524d\u306b\u4e88\u71b1\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308b\u3002 <\/li>\n\n\n\n<li> 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<\/li>\n\n\n\n<li>\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3092\u542b\u3080\u5408\u91d1\u306f\u3001\u3067\u304d\u308b\u3060\u3051\u96fb\u529b\u5468\u6ce2\u6570\u7089\u3067\u88fd\u932c\u3059\u3079\u304d\u3067\u306f\u306a\u3044\u3002\u3053\u306e\u7089\u306e\u652a\u62cc\u80fd\u529b\u306f\u6975\u3081\u3066\u5f37\u304f\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u306f\u7a7a\u6c17\u3068\u63a5\u89e6\u3059\u308b\u3068\u5bb9\u6613\u306bAl2O3\u306b\u9178\u5316\u3055\u308c\u3001\u6db2\u4f53\u91d1\u5c5e\u306b\u5165\u3063\u3066\u30b9\u30e9\u30b0\u3068\u306a\u308a\u3001\u30ac\u30b9\u306e\u6790\u51fa\u6e90\u306b\u3082\u306a\u308b\u304b\u3089\u3067\u3042\u308b\u3002\u30c1\u30e3\u30f3\u30b9\u3067\u3042\u308b\u3002\u540c\u6642\u306bH2O\u3068\u3082\u53cd\u5fdc\u3057\u3084\u3059\u3044\u306e\u3067\u3001\u6db2\u4f53\u91d1\u5c5e\u306f\u6c34\u7d20H2\u3092\u5438\u53ce\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u62b5\u6297\u5f0f\u53cd\u5c04\u7089\u3001\u9060\u8d64\u5916\u7dda\u52a0\u71b1\u7089\u3001\u3042\u308b\u3044\u306f\u6cb9\u3084\u30ac\u30b9\u3092\u4f7f\u3063\u305f\u53cd\u5c04\u7089\u3092\u4f7f\u3048\u3070\u88fd\u932c\u3067\u304d\u308b\u3002\u3053\u308c\u3089\u306e\u7089\u3067\u88fd\u932c\u3055\u308c\u305f\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u5408\u91d1\u306f\u3001\u30ac\u30b9\u306e\u542b\u6709\u91cf\u304c\u5c11\u306a\u304f\u3001\u4e0d\u7d14\u7269\u304c\u5c11\u306a\u3044\u3053\u3068\u304c\u3001\u5b9f\u8df5\u306b\u3088\u3063\u3066\u8a3c\u660e\u3055\u308c\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>\u6750\u6599\u3092\u6295\u5165\u3059\u308b\u969b\u306f\u3001\u878d\u70b9\u306e\u4f4e\u3044\u6750\u6599\u304b\u3089\u6295\u5165\u3057\u3001\u6b21\u306b\u878d\u70b9\u306e\u9ad8\u3044\u6750\u6599\u3092\u6295\u5165\u3059\u308b\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u91d1\u5c5e\u304c\u30ac\u30b9\u3092\u5438\u53ce\u3059\u308b\u91cf\u304c\u5c11\u306a\u304f\u306a\u308a\u3001\u88c5\u5165\u7269\u3068\u7a7a\u6c17\u306e\u63a5\u89e6\u9762\u7a4d\u3068\u63a5\u89e6\u6642\u9593\u304c\u77ed\u304f\u306a\u308b\u304b\u3089\u3067\u3042\u308b\u3002 <\/li>\n\n\n\n<li>\u6db2\u4f53\u91d1\u5c5e\u3092\u8131\u30ac\u30b9\u3057\u305f\u5f8c\u306f\u3001\u30b9\u30e9\u30b0\u3092\u76f4\u3061\u306b\u53d6\u308a\u9664\u3044\u3066\u304b\u3089\u6ce8\u6e6f\u3057\u3001\u518d\u547c\u5438\u3092\u9632\u3050\u305f\u3081\u306b\u9577\u6642\u9593\u6ede\u7559\u3055\u305b\u3066\u306f\u306a\u3089\u306a\u3044\u3002 <\/li>\n\n\n\n<li>\u30d8\u30ad\u30b5\u30af\u30ed\u30ed\u30a8\u30bf\u30f3\u307e\u305f\u306f\u30a2\u30eb\u30b4\u30f3\u306b\u3088\u308b\u7cbe\u88fd\u8131\u30ac\u30b9\u307e\u305f\u306f\u771f\u7a7a\u8131\u30ac\u30b9\u3002 <\/li>\n<\/ol>\n\n\n\n<p>(2) \u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u7802\u4e2d\u5b50\u3001\u91d1\u578b\uff08\u4e2d\u5b50\uff09\u7b49\u306e\u30ac\u30b9\u767a\u751f\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3002\u30ac\u30b9\u767a\u751f\u91cf\u306e\u5c11\u306a\u3044\u826f\u8cea\u306a\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u5264\u3092\u9078\u629e\u3057\u3001\u91d1\u578b\u3084\u4e2d\u5b50\u306e\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u5264\u3092\u5341\u5206\u306b\u4e7e\u71e5\u3055\u305b\u308b\u3002\u53cd\u5fdc\u6027\u6c17\u5b54\u306e\u9632\u6b62<\/p>\n\n\n\n<ul>\n<li> \u5857\u6599\u306e\u7a2e\u985e\u3092\u9069\u5207\u306b\u9078\u629e\u3057\u3001\u5857\u6599\u306e\u30ac\u30b9\u767a\u751f\u91cf\u304c\u9ad8\u304f\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3002\u5857\u6599\u306b\u3082\u3042\u308b\u7a0b\u5ea6\u306e\u30a2\u30a6\u30c8\u30ac\u30b9\u304c\u3042\u308b\u3002 <\/li>\n\n\n\n<li>\u30b9\u30d7\u30ec\u30fc\u5f8c\u306f\u5857\u6599\u3092\u62ed\u304d\u53d6\u3089\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u5857\u6599\u304c\u843d\u3061\u305f\u3068\u3053\u308d\u306f\u3001\u3059\u3050\u306b\u30b9\u30d7\u30ec\u30fc\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/li>\n\n\n\n<li>\u91d1\u578b\u3068\u4e2d\u5b50\u3092\u307e\u305a\u4e88\u71b1\u3057\u3001\u305d\u306e\u5f8c\u5857\u6599\u3092\u30b9\u30d7\u30ec\u30fc\u3057\u3001\u5b8c\u5168\u306b\u713c\u304d\u4ed8\u3051\u3066\u304b\u3089\u4f7f\u7528\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u7802\u4e2d\u5b50\u306f\u5341\u5206\u306b\u4e7e\u71e5\u3055\u305b\u3066\u304b\u3089\u4f7f\u7528\u3059\u308b\u3053\u3068\u3002 <\/li>\n\n\n\n<li>\u91d1\u5c5e\u30bf\u30a4\u30d7\u3084\u30b3\u30fc\u30eb\u30c9\u30a2\u30a4\u30ed\u30f3\u306e\u8868\u9762\u306f\u6ed1\u3089\u304b\u3067\u6e05\u6f54\u3067\u3042\u308b\u3079\u304d\u3067\u3042\u308a\u3001\u4f7f\u7528\u524d\u306b\u4e7e\u71e5\u3055\u305b\u308b\u3079\u304d\u3067\u3042\u308b\u3002 <\/li>\n<\/ul>\n\n\n\n<p>(3) \u91d1\u578b\u3068\u30b3\u30a2\u306e\u6392\u6c17\u6761\u4ef6\u3092\u6539\u5584\u3059\u308b\u3002<\/p>\n\n\n\n<p>\u92f3\u7269\u306e\u7279\u6027\u306b\u5fdc\u3058\u3066\u3001\u92f3\u7269\u306e\u5145\u586b\u72b6\u6cc1\u3092\u7dcf\u5408\u7684\u306b\u8003\u616e\u3057\u3001\u5408\u7406\u7684\u306a\u6392\u6c17\u4f4d\u7f6e\u3068\u7570\u306a\u308b\u6392\u6c17\u624b\u6bb5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a\u6392\u6c17\u306e\u305f\u3081\u306e\u6392\u6c17\u6e9d\u3001\u6392\u6c17\u30b7\u30fc\u30c8\u3001\u6392\u6c17\u91dd\u3001\u6392\u6c17\u30d7\u30e9\u30b0\u3001\u6392\u6c17\u7a74\u306a\u3069\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53ce\u7e2e\u3068\u591a\u5b54\u6027<\/h3>\n\n\n\n<p><br>\u53ce\u7e2e\u6b20\u9665\uff1a\u91d1\u5c5e\u304c\u51dd\u56fa\u3057\u3066\u53ce\u7e2e\u3059\u308b\u969b\u3001\u6eb6\u878d\u91d1\u5c5e\u304c\u92f3\u7269\u306b\u52b9\u679c\u7684\u306b\u4f9b\u7d66\u3055\u308c\u306a\u3044\u305f\u3081\u306b\u767a\u751f\u3059\u308b\u6b20\u9665\u3002\u5f15\u3051\u5de3\u3001\u5f15\u3051\u5de3\u3001\u5f15\u3051\u5de3\u3001\u9665\u6ca1\u306a\u3069\u304c\u3042\u308b\u3002 <\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1.\u7279\u5fb4<\/h4>\n\n\n\n<ol>\n<li>\u5f15\u3051\u5de3\uff1a\u92f3\u7269\u306e\u4e2d\u306b\u6975\u7aef\u306b\u4e0d\u898f\u5247\u306a\u7a74\u304c\u3042\u308a\u3001\u7a74\u306e\u58c1\u306f\u7c97\u304f\u3001\u30c7\u30f3\u30c9\u30e9\u30a4\u30c8\u304c\u3042\u308a\u3001\u3053\u308c\u306f\u5f15\u3051\u5de3\u6b20\u9665\u3068\u547c\u3070\u308c\u308b\u3002\u591a\u304f\u306f\u92f3\u7269\u306e\u6700\u7d42\u51dd\u56fa\u90e8\u306b\u73fe\u308c\u308b\u3002 <\/li>\n\n\n\n<li>\u5f15\u3051\u5de3\uff1a\u92f3\u9020\u90e8\u306b\u5c0f\u3055\u306a\u5f15\u3051\u5de3\u304c\u6563\u5728\u3057\u3066\u3044\u308b\u3053\u3068\u3067\u3001\u62e1\u5927\u93e1\u3092\u4f7f\u3063\u3066\u5f15\u3051\u5de3\u6b20\u9665\u3068\u547c\u3076\u3053\u3068\u3082\u3042\u308b\u3002\u4f8b\u3048\u3070\u3001\u30a2\u30eb\u30df\u30d4\u30b9\u30c8\u30f3\u3092\u4f4e\u5727\u92f3\u9020\u3067\u88fd\u9020\u3059\u308b\u5834\u5408\u3001\u30d4\u30b9\u30c8\u30f3\u4e0a\u90e8\u306b\u5f15\u3051\u5de3\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n\n\n\n<li>\u30dd\u30ed\u30b7\u30c6\u30a3\uff1a\u92f3\u7269\u306e\u51dd\u56fa\u901f\u5ea6\u304c\u9045\u3044\u90e8\u5206\u306b\u73fe\u308c\u308b\u975e\u5e38\u306b\u5c0f\u3055\u306a\u7a74\u3002\u30c7\u30f3\u30c9\u30e9\u30a4\u30c8\u3084\u30c7\u30f3\u30c9\u30e9\u30a4\u30c8\u9593\u306b\u5206\u5e03\u3057\u3001\u62e1\u6563\u6c17\u5b54\u3001\u5fae\u5c0f\u53ce\u7e2e\u3001\u7c97\u5927\u7d44\u7e54\u306e\u6df7\u5408\u6b20\u9665\u3067\u3042\u308a\u3001\u92f3\u7269\u306e\u30b3\u30f3\u30d1\u30af\u30c8\u6027\u3092\u4f4e\u4e0b\u3055\u305b\u3001\u6f0f\u308c\u306e\u539f\u56e0\u3068\u306a\u308a\u3084\u3059\u3044\u3002 <\/li>\n\n\n\n<li>\u53ce\u7e2e\uff1a\u92f3\u7269\u306e\u539a\u3044\u7aef\u9762\u3084\u3001\u65ad\u9762\u63a5\u5408\u90e8\u306e\u4e0a\u9762\u306e\u5d29\u308c\u3002\u5f15\u3051\u5de3\u306e\u4e0b\u306b\u5f15\u3051\u5de3\u304c\u3042\u308b\u5834\u5408\u3082\u3042\u308a\u3001\u5185\u5074\u306e\u5f15\u3051\u5de3\u4ed8\u8fd1\u306b\u3082\u5f15\u3051\u5de3\u304c\u73fe\u308c\u308b\u3053\u3068\u3082\u3042\u308b\u3002 <\/li>\n\n\n\n<li>\u53ce\u7e2e\uff1a\u30b1\u30a4\u9178\u30ca\u30c8\u30ea\u30a6\u30e0\u77f3\u7070\u5ca9\u7802\u578b\u3092\u4f7f\u7528\u3057\u3066\u92f3\u7269\u3092\u88fd\u9020\u3059\u308b\u969b\u306b\u767a\u751f\u3059\u308b\u92f3\u7269\u306e\u6b20\u9665\u3067\u3001\u92f3\u7269\u306e\u65ad\u9762\u5bf8\u6cd5\u306e\u62e1\u5927\u3092\u7279\u5fb4\u3068\u3059\u308b\u3002 <\/li>\n\n\n\n<li>\u53ce\u7e2e\u30af\u30e9\u30c3\u30af\uff1a\u4e0d\u9069\u5207\u306a\u92f3\u9020\u3001\u53ce\u7e2e\u62b5\u6297\u3001\u4e0d\u5747\u4e00\u306a\u53ce\u7e2e\u306b\u3088\u3063\u3066\u751f\u3058\u308b\u4e80\u88c2\u3002\u51dd\u56fa\u76f4\u5f8c\u3084\u4f4e\u6e29\u3067\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u3002 <\/li>\n<\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.\u539f\u56e0<\/h4>\n\n\n\n<p>\u5f15\u3051\u5de3\u3084\u5f15\u3051\u5de3\u304c\u5f62\u6210\u3055\u308c\u308b\u7406\u7531\u306f\u3001\u6eb6\u6e6f\u306e\u51dd\u56fa\u904e\u7a0b\u306b\u304a\u3044\u3066\u3001\u5408\u91d1\u306e\u6db2\u4f53\u53ce\u7e2e\u3068\u51dd\u56fa\u53ce\u7e2e\u3001\u3064\u307e\u308a\u4f53\u7a4d\u53ce\u7e2e\u306b\u3088\u308b\u4f53\u7a4d\u640d\u5931\u3092\u88dc\u3046\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u3064\u307e\u308a\u4f9b\u7d66\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u3057\u3070\u3057\u3070\u92f3\u9020\u306e\u6700\u5f8c\u306b\u51dd\u56fa\u3059\u308b\u305f\u3081\u3067\u3042\u308b 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<\/li>\n\n\n\n<li>\u5145\u586b\u901f\u5ea6\u3068\u91d1\u578b\u6e29\u5ea6\u3092\u4e0b\u3052\u308b\u304c\u3001\u30b3\u30fc\u30eb\u30c9\u30b7\u30e3\u30c3\u30c8\u3084\u4e0d\u5341\u5206\u306a\u6ce8\u6e6f\u3092\u9632\u3050\u305f\u3081\u306b\u9069\u5207\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/li>\n\n\n\n<li> \u6ce8\u6e6f\u6e29\u5ea6\u3092\u9069\u5207\u306b\u4e0b\u3052\u308b\u3053\u3068\u306f\u3001\u53ce\u7e2e\u5de3\u306e\u4f4e\u6e1b\u306b\u5927\u304d\u306a\u52b9\u679c\u304c\u3042\u308b\u3002\uff1a\u92f3\u578b\u306e\u6e29\u5ea6\u5206\u5e03\u3092\u5408\u7406\u7684\u306b\u3057\u3001\u4e0a\u90e8\u306e\u6e29\u5ea6\u3092\u9ad8\u304f\u3001\u4e0b\u90e8\u306e\u6e29\u5ea6\u3092\u4f4e\u304f\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">5.\u91d1\u578b\u6e29\u5ea6\u3001\u5145\u586b\u901f\u5ea6\u3001\u6ce8\u6e6f\u6e29\u5ea6\u306a\u3069\u306e\u52a0\u5de5\u65b9\u6cd5\u306f\u3001\u9010\u6b21\u51dd\u56fa\u3068\u306f\u9006\u3067\u3042\u308b\u3002<\/h4>\n\n\n\n<p><br>\u7802\u578b\u306f\u92f3\u9020\u5de5\u7a0b\u3092\u5909\u3048\u305f\u307b\u3046\u304c\u4fbf\u5229\u306a\u306e\u3067\u3001\u540c\u6642\u51dd\u56fa\u3067\u3082\u9806\u6b21\u51dd\u56fa\u3067\u3082\u3001\u5f15\u3051\u5de3\u3092\u306a\u304f\u3059\u65b9\u6cd5\u306f\u3044\u308d\u3044\u308d\u3042\u308b\u3002<\/p>\n\n\n\n<p><br>\u5177\u4f53\u7684\u306a\u4e88\u9632\u7b56\u306f\u4ee5\u4e0b\u306e\u901a\u308a\uff1a<\/p>\n\n\n\n<ul>\n<li>\u8089\u539a\u306e\u3070\u3089\u3064\u304d\u304c\u5927\u304d\u3044\u5927\u30fb\u4e2d\u578b\u306e\u975e\u9244\u5408\u91d1\u92f3\u7269\u3084\u9244\u7cfb\u91d1\u5c5e\u92f3\u7269\u3067\u306f\u3001\u62bc\u6e6f\u3092\u8a2d\u7f6e\u3057\u3001\u62bc\u6e6f\u304b\u3089\u52a0\u5727\u3057\u3066\u9001\u7d66\u3092\u5f37\u5316\u3057\u3001\u5f15\u3051\u5de3\u3084\u30dd\u30ed\u30b7\u30c6\u30a3\u3092\u9632\u6b62\u3059\u308b\u3002 <\/li>\n\n\n\n<li>\u6ce8\u6e6f\u6e29\u5ea6\u307e\u305f\u306f\u6ce8\u6e6f\u901f\u5ea6\u3092\u9069\u5207\u306b\u4e0b\u3052\u308b\u3002 <\/li>\n\n\n\n<li>\u92f3\u9020\u5de5\u7a0b\u3092\u5408\u7406\u7684\u306b\u8a2d\u8a08\u3057\u3001\u9806\u6b21\uff08\u540c\u6642\uff09\u51dd\u56fa\u6761\u4ef6\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03.jpg\" alt=\"\" class=\"wp-image-1977\" width=\"400\" height=\"400\" srcset=\"https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03.jpg 800w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03-150x150.jpg 150w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03-768x768.jpg 768w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03-300x300.jpg 300w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03-600x600.jpg 600w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/03-100x100.jpg 100w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30af\u30eb\u30fc\u30b8\u30e7\u30f3<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.\u7279\u5fb4<\/h4>\n\n\n\n<ol>\n<li>\u4ecb\u5728\u7269\u6b20\u9665 \u92f3\u7269\u4e2d\u306e\u69d8\u3005\u306a\u91d1\u5c5e\u304a\u3088\u3073\u975e\u91d1\u5c5e\u4ecb\u5728\u7269\u306e\u7dcf\u79f0\u3002\u901a\u5e38\u3001\u9178\u5316\u7269\u3001\u786b\u5316\u7269\u3001\u30b1\u30a4\u9178\u5869\u306a\u3069\u306e\u4e0d\u7d14\u7269\u7c92\u5b50\u304c\u56fa\u4f53\u91d1\u5c5e\u4e2d\u306b\u6a5f\u68b0\u7684\u306b\u4fdd\u6301\u3055\u308c\u305f\u308a\u3001\u51dd\u56fa\u4e2d\u306b\u91d1\u5c5e\u4e2d\u306b\u5f62\u6210\u3055\u308c\u305f\u308a\u3001\u51dd\u56fa\u5f8c\u306e\u53cd\u5fdc\u4e2d\u306b\u91d1\u5c5e\u4e2d\u306b\u5f62\u6210\u3055\u308c\u308b\u3002\u4ecb\u5728\u7269\u3001\u51b7\u8c46\u3001\u6d78\u6f64\u8c46\u3001\u30b9\u30e9\u30b0\u4ecb\u5728\u7269\u3001\u30c8\u30e9\u30b3\u30fc\u30de\u306a\u3069\u3092\u542b\u3080\u3002 <\/li>\n\n\n\n<li>\u4ecb\u5728\u7269 \u92f3\u7269\u4e2d\u307e\u305f\u306f\u8868\u9762\u306b\u3042\u308b\u6bcd\u6750\u91d1\u5c5e\u7d44\u6210\u3068\u306f\u7570\u306a\u308b\u7c92\u5b50\u3002\u30b9\u30e9\u30b0\u3001\u7802\u3001\u5857\u819c\u3001\u9178\u5316\u7269\u3001\u786b\u5316\u7269\u3001\u30b1\u30a4\u9178\u5869\u306a\u3069\u3002 <\/li>\n\n\n\n<li>\u5185\u56e0\u6027\u4ecb\u5728\u7269 \u88fd\u932c\u3001\u6ce8\u6e6f\u3001\u51dd\u56fa\u306e\u904e\u7a0b\u3067\u3001\u6eb6\u6e6f\u3068\u7089\u5185\u30ac\u30b9\uff08\u92f3\u578b\u3092\u542b\u3080\u5834\u5408\u3082\u3042\u308b\uff09\u3068\u306e\u5316\u5b66\u53cd\u5fdc\u306b\u3088\u308a\u767a\u751f\u3057\u3001\u6eb6\u6e6f\u306e\u6e29\u5ea6\u4f4e\u4e0b\u306b\u3088\u308a\u6eb6\u89e3\u5ea6\u304c\u4f4e\u4e0b\u3057\u3001\u6790\u51fa\u3059\u308b\u4ecb\u5728\u7269\u3002 <\/li>\n\n\n\n<li>\u5916\u6765\u6027\u4ecb\u5728\u7269 \u30b9\u30e9\u30b0\u3084\u5916\u6765\u4e0d\u7d14\u7269\u306b\u3088\u308b\u4ecb\u5728\u7269\u3002 <\/li>\n\n\n\n<li>\u30b9\u30e9\u30b0\u7cfb\u4ecb\u5728\u7269\uff1a\u4e0d\u7d14\u7269\u306e\u591a\u3044\u6eb6\u6e6f\u3092\u6ce8\u6e6f\u3057\u305f\u308a\u3001\u6ce8\u6e6f\u65b9\u6cd5\u3084\u6ce8\u6e6f\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u304c\u4e0d\u9069\u5207\u306a\u305f\u3081\u306b\u3001\u6eb6\u6e6f\u4e2d\u306b\u5dfb\u304d\u8fbc\u307e\u308c\u305f\u30b9\u30e9\u30b0\u3084\u4f4e\u878d\u70b9\u5316\u5408\u7269\u3001\u9178\u5316\u7269\u306a\u3069\u304c\u539f\u56e0\u3067\u767a\u751f\u3059\u308b\u92f3\u7269\u306e\u4ecb\u5728\u7269\u6b20\u9665\u3002\u901a\u5e38\u3001\u878d\u70b9\u3084\u5bc6\u5ea6\u304c\u6eb6\u6e6f\u3088\u308a\u4f4e\u3044\u305f\u3081\u3001\u4e00\u822c\u306b\u92f3\u7269\u306e\u4e0a\u9762\u3084\u4e0a\u90e8\u3001\u4e2d\u5b50\u306e\u4e0b\u9762\u3084\u6b7b\u89d2\u306b\u5206\u5e03\u3057\u3001\u7834\u65ad\u9762\u306f\u304f\u3059\u3093\u3060\u6697\u7070\u8272\u3068\u306a\u308b\u3002 <\/li>\n\n\n\n<li>\u30da\u30a4\u30f3\u30c8\u30b9\u30e9\u30b0\u30db\u30fc\u30eb\uff1a\u5c64\u304c\u7c89\u5316\u30fb\u8131\u843d\u3057\u3066\u92f3\u7269\u8868\u9762\u306b\u6b8b\u3063\u305f\u6b8b\u7559\u5857\u6599\u84c4\u7a4d\u7269\u8cea\u3092\u542b\u3080\u4e0d\u898f\u5247\u306a\u7a74\u3002\u6ce8\u6e6f\u5177\u3001\u92f3\u578b\u3001\u62bc\u6e6f\u7ba1\u3001\u7802\u4e2d\u5b50\u306a\u3069\u306b\u4ed8\u7740\u3057\u305f\u5857\u6599\u304c\u8131\u843d\u3057\u3001\u7279\u306b\u7802\u4e2d\u5b50\u306b\u5857\u6599\u3092\u5237\u6bdb\u5857\u308a\u3057\u305f\u5f8c\u3001\u706b\u3067\u713c\u304f\u3068\u5265\u96e2\uff08\u7206\u767a\uff09\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u751f\u7523\u304c\u30bf\u30a4\u30c8\u3067\u306a\u3044\u3068\u304d\u306f\u3001\u6052\u6e29\u30aa\u30fc\u30d6\u30f3\u3092\u4f7f\u3063\u3066\u713c\u304f\u3088\u3046\u306b\u3059\u308b\u3002\u713c\u304d\u4e0a\u304c\u3063\u305f\u7802\u4e2d\u5b50\u3002 <\/li>\n\n\n\n<li>\u30b3\u30fc\u30eb\u30c9\u30d3\u30fc\u30f3\u30ba \u6ce8\u6e6f\u4f4d\u7f6e\u3088\u308a\u4e0b\u306e\u92f3\u7269\u8868\u9762\u306b\u5b58\u5728\u3059\u308b\u91d1\u5c5e\u7c92\u5b50\uff08\u30d3\u30fc\u30ba\uff09\u306f\u3001\u92f3\u7269\u3068\u540c\u3058\u5316\u5b66\u7d44\u6210\u3092\u6301\u3061\u3001\u8868\u9762\u306b\u9178\u5316\u304c\u898b\u3089\u308c\u308b\u3002\u4e00\u822c\u306b\u3001\u6eb6\u6e6f\u306e\u98db\u6563\u3001\u5c11\u91cf\u306e\u6eb6\u6e6f\u306e\u92f3\u578b\u3078\u306e\u63a5\u89e6\u3001\u6025\u901f\u306a\u51dd\u56fa\u3001\u305d\u306e\u5f8c\u306e\u6eb6\u6e6f\u304c\u5408\u6d41\u3057\u306a\u3044\u3053\u3068\u306b\u3088\u308a\u5f62\u6210\u3055\u308c\u308b\u3002 <\/li>\n\n\n\n<li>\u30c8\u30e9\u30b3\u30fc\u30de \u92f3\u7269\u306e\u5185\u90e8\u307e\u305f\u306f\u8868\u9762\u306b\u7802\u7c92\u306e\u3042\u308b\u7a74\u3002 <\/li>\n\n\n\n<li>\u786c\u3044\u6591\u70b9 \u92f3\u7269\u306e\u65ad\u9762\u306b\u6563\u5728\u3059\u308b\u3001\u307e\u305f\u306f\u6bd4\u8f03\u7684\u5927\u304d\u306a\u786c\u3044\u4ecb\u5728\u7269\u304c\u73fe\u308c\u3001\u3053\u308c\u306f\u4e3b\u306b\u6a5f\u68b0\u52a0\u5de5\u307e\u305f\u306f\u8868\u9762\u51e6\u7406\u4e2d\u306b\u767a\u898b\u3055\u308c\u308b\u3002 <\/li>\n\n\n\n<li>\u30b9\u30e9\u30b0\u6c17\u5b54 \u92f3\u9020\u4f4d\u7f6e\u306e\u4e0a\u9762\u306b\u5b58\u5728\u3059\u308b\u975e\u91d1\u5c5e\u4ecb\u5728\u7269\u306f\u3001\u52a0\u5de5\u5f8c\u306b\u6c17\u5b54\u3068\u5171\u5b58\u3057\u3066\u3044\u308b\u306e\u304c\u666e\u901a\u3067\u3001\u6c17\u5b54\u306f\u5927\u304d\u3055\u304c\u7570\u306a\u308a\u3001\u96c6\u5408\u3057\u3066\u3044\u308b\u3002 <\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">2.\u539f\u56e0<\/h4>\n\n\n\n<p>\u4f4e\u5727\u92f3\u9020\u92f3\u7269\u306b\u306f\u9178\u5316\u30b9\u30e9\u30b0\u4ecb\u5728\u7269\u304c\u3057\u3070\u3057\u3070\u51fa\u73fe\u3059\u308b\u3002\u9178\u5316\u30b9\u30e9\u30b0\u306e\u767a\u751f\u6e90\u3092\u5206\u6790\u3059\u308b\uff1a<\/p>\n\n\n\n<ul>\n<li>(1)\u9023\u7d9a\u751f\u7523\u4e2d\u306b\u30eb\u30c4\u30dc\u306b\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6db2\u3092\u6dfb\u52a0\u3059\u308b\u3068\u3001\u6ce8\u6e6f\u6642\u306b\u6db2\u9762\u306e\u9178\u5316\u30b9\u30e9\u30b0\u304c\u62bc\u3057\u6e6f\u306b\u7a81\u5165\u3057\u3066\u92f3\u578b\u5185\u306b\u6301\u3061\u8fbc\u307e\u308c\u308b\u305f\u3081\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6db2\u3092\u6dfb\u52a0\u3057\u305f\u5f8c\u3001\u62bc\u3057\u6e6f\u7ba1\u306e\u4e0a\u7aef\u306b\u5de5\u5177\u3092\u633f\u5165\u3057\u3066\u62bc\u3057\u6e6f\u7ba1\u5185\u306e\u30b9\u30e9\u30b0\u3092\u3059\u304f\u3044\u53d6\u308b\u3002 <\/li>\n\n\n\n<li>(2) \u30e9\u30a4\u30b6\u30fc\u30d1\u30a4\u30d7\u306e\u6db2\u9762\u306e\u4e0a\u6607\u3068\u4e0b\u964d\u3092\u7e70\u308a\u8fd4\u3059\u3053\u3068\u306b\u3088\u3063\u3066\u751f\u3058\u308b\u9178\u5316\u76ae\u819c\u3002 <\/li>\n\n\n\n<li>(3)\u52a0\u5727\u901f\u5ea6\u304c\u901f\u3059\u304e\u308b\u305f\u3081\u3001\u98db\u6563\u3057\u3066\u30b9\u30b1\u30fc\u30eb\u304c\u767a\u751f\u3059\u308b\u3002 <\/li>\n\n\n\n<li>\u52a0\u3048\u3066\u3001\u975e\u91d1\u5c5e\u30b9\u30e9\u30b0\u306e\u4ecb\u5728\u7269\u306f\u3001\u92f3\u9020\u6750\u6599\u3084\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u640d\u5931\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002 <\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">3.Prevention<\/h4>\n\n\n\n<ol>\n<li>Strictly control the filling speed to ensure that the molten metal rises steadily without impact or splashing.<\/li>\n\n\n\n<li>Thoroughly remove the oxidation slag in the alloy liquid. <\/li>\n\n\n\n<li>Use a filter screen at the mouth of the riser or the sprue of the mold. However, not all filters can be used, some are large and complex, and the wall thickness is thinner, and the weight of the product will not be filled after using the filter, only some are small and simple, and the wall thickness is thicker , lighter weight product, easy to use. the<\/li>\n\n\n\n<li>Check whether the paint layer has fallen off, and the dust, sand and sundries in the cavity should be thoroughly cleaned.<\/li>\n<\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cold insulation and insufficient watering<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.Feature<\/h4>\n\n\n\n<ul>\n<li>(1) Cold shut: There are penetrating or impenetrable gaps with rounded edges on the casting, and the middle of the gap is often separated by oxide scales, which cannot be completely integrated into one defect. It mostly appears in the wide upper surface or thin wall far away from the gate, the confluence of molten metal, cold iron core support and other chilling parts. <\/li>\n\n\n\n<li>(2) The casting is incomplete or the outline is incomplete or may be complete but the corners are round and bright, which is called insufficient pouring. It often appears in parts far away from the gate and in thin-walled places. Its pouring system is the best. <\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2.Causes of formation (fluidity, exhaust)<\/h4>\n\n\n\n<ol>\n<li>The mold temperature or molten metal temperature is low;<\/li>\n\n\n\n<li>Low metal filling pressure and slow filling speed;<\/li>\n\n\n\n<li> The exhaust of the cavity is not smooth, and the gas counterpressure in the cavity is too large. <\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">3.Preventive measures (fluidity, exhaust)<\/h4>\n\n\n\n<ul>\n<li>(1) Use reasonable mold temperature and molten metal pouring temperature (two important process parameters); general thin-walled and complex metal cores for castings, metal molds 200-300, 250-320, 250-350 for low-pressure casting The temperature is 10 to 20 degrees lower than the pouring temperature of gravity pouring under the same conditions. <\/li>\n\n\n\n<li>(2) Use reasonable pressurization specifications. <\/li>\n\n\n\n<li>(3) Improve the exhaust conditions and exhaust methods of the mold and core. <\/li>\n\n\n\n<li>(4) If very shallow convection groove marks are found on the casting, just spray some paint on the convection part of the mold to eliminate them. <\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02.jpg\" alt=\"\" class=\"wp-image-1976\" width=\"400\" height=\"400\" srcset=\"https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02.jpg 800w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02-150x150.jpg 150w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02-768x768.jpg 768w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02-300x300.jpg 300w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02-600x600.jpg 600w, https:\/\/mnwell.com\/wp-content\/uploads\/2023\/07\/02-100x100.jpg 100w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Cracks<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.Cause of formation<\/h4>\n\n\n\n<p>Cracks can be divided into hot and cold cracks. During the cooling and solidification process of liquid metal, if the stress caused by various reasons occurs shortly after the solid phase skeleton is formed, the cracks formed are called hot cracks; otherwise, they are called cold cracks. <\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.Prevention method<\/h4>\n\n\n\n<ul>\n<li>Increase the retreat of the part that hinders shrinkage in the mold and core, and increase the thickness of the coating.<\/li>\n\n\n\n<li> Increase the feeding of the hot cracked part. Because most of the hot cracking part is the final solidification part, strengthening the feeding of this part will naturally reduce hot cracking. <\/li>\n\n\n\n<li>Increase the heat dissipation capacity of the mold in the hot part, which may transfer the hot crack part or prevent the hot crack. <\/li>\n\n\n\n<li>On both sides of the metal mold (core) corresponding to the crack, a shallow channel parallel to the crack direction is opened to disperse the shrinkage stress during solidification, so as to overcome the hot crack. <\/li>\n\n\n\n<li>Opening the mold and taking out the casting as early as possible can effectively reduce hot cracking. <\/li>\n\n\n\n<li>Increasing the mold temperature and pouring temperature is conducive to simultaneous solidification and has a good effect on reducing thermal cracking. The cold cracking can be considered from the structural design, and the produced castings can be slowly cooled or annealed immediately, which is beneficial to reduce the residual thermal stress, can effectively reduce the cold cracking, and can also add tension bars to the parts to remove Crackproof.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">sticky sand<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.Cause of formation<\/h4>\n\n\n\n<p>Sticky sand can be divided into chemical sticky sand and mechanical sticky sand, but for low-pressure casting or differential pressure casting, it is mainly mechanical sticky sand. The reason for this is that the pressure of the liquid metal increases greatly when it is under pressure, and the pressure forces the liquid metal to overcome the surface tension and penetrate into the sand core or sand mold, resulting in mechanical sand sticking. <\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.Prevention method<\/h4>\n\n\n\n<ul>\n<li>Brush the high refractoriness and dense coating layer on the surface of the sand mold or sand core, which can effectively overcome the defects of sand sticking. <\/li>\n\n\n\n<li>Properly reduce the pouring temperature. <\/li>\n\n\n\n<li>Appropriately reduce the pressure jump value during pressure holding. <\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">deformation<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1.Cause of formation<\/h4>\n\n\n\n<p>The causes of casting deformation are the same as those of cold cracks<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.Prevention method<\/h4>\n\n\n\n<p>The treatment of this problem is basically the same as that of cold cracking. In addition, there are some special methods: <\/p>\n\n\n\n<ul>\n<li>(1) According to the deformation of the casting, a correction amount for anti-deformation is reserved on the mold. <\/li>\n\n\n\n<li>(2) The mold reserves the stretch bars, which will be removed after heat treatment and annealing. <\/li>\n\n\n\n<li>(3) After deformation, it can be corrected on the press. <\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">flash, burr<\/h3>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1.Causes of flash burr formation<\/h4>\n\n\n\n<p>Due to thermal stress deformation or other mechanical reasons (insufficient pressure of the hydraulic cylinder), the mold is not closed tightly, resulting in gaps, leaving flashes and burrs after filling.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.Prevention method<\/h4>\n\n\n\n<ul>\n<li>(1) Increase the rigidity of the mold and change the structure of the mold to reduce the thermal deformation of the mold. <\/li>\n\n\n\n<li>(2) It may also be due to operational reasons that the corners of the mold may be deformed (bumped) and one side of the parting surface may be raised. It should be carefully checked or tested on a platform, and then filed flat.<\/li>\n\n\n\n<li> (3) Properly reduce the pouring temperature, pouring speed (filling speed, pressurization speed) or pressurized crust delay<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">leak<\/h3>\n\n\n\n<p>Air leakage, water seepage or oil seepage occurs during the air tightness test or use of castings. Some aluminum castings with high density requirements often have quality problems of pressure leakage, mostly due to defects such as pores, shrinkage, looseness, coarse structure or cracks in the castings, and there are a lot of Al2O3 in these parts. The reason is that when the aluminum liquid contacts the air during pouring, an oxide film is formed on its surface immediately, and the mixed flow that occurs due to the unsteady flow of the liquid when filling the mold will often suppress these oxide films and some cast aluminum parts that require high density. The quality problem of leakage, the main cause of leakage is micropores, microshrinkage and cracks, and there are a lot of Al2O3 in these parts. The reason is that when the aluminum liquid contacts the air during pouring, an oxide film is formed on its surface immediately, and the turbulence that occurs due to the unsteady flow of the liquid when filling the mold will mix these oxide films together with the adsorbed gas into the interior of the aluminum liquid. The relative density of these inclusions is similar to that of the aluminum liquid, and because the viscosity of the aluminum liquid increases as the temperature drops, the impurities will not have time to float out and remain inside the casting. The two adjacent oxide films provide positions and opportunities for the formation of initial cracks, and the gas precipitated during solidification and insufficient feeding will also form micro-pores and micro-shrinkage porosity in these areas. This will significantly reduce the mechanical properties of the material and become the source of pressure leakage, so the speed of liquid metal entering the cavity and the stability of liquid flow are crucial issues. It has been studied abroad that when a thin plate with a thickness of 5mm is filled at different speeds, the strength and plasticity of the resulting castings are different. Even if the filling speed is the same, the severity of the turbulence caused by the structure of the cavity is different, and the strength and plasticity of the corresponding parts are also different. Therefore, the hydraulic pressure control system has a very serious impact on the quality of complex thin-walled parts with high internal quality requirements.<\/p>","protected":false},"excerpt":{"rendered":"<p>Low-pressure die-casting is one of the commonly used die-casting processes in aluminum alloy die-casting. Compared with high-pressure die-casting, it has the characteristics of low cost and can manufacture large parts. In low-pressure die casting, if you do not master the low-pressure die-casting technology, there will be some defects. Let&#8217;s take a look at the 9 major defects that will occur in low-pressure die-casting and how to prevent them Stomata 1.feature (1) stomata Pore-type defects formed by gas inside the casting. Its surface is generally smooth, mainly pear-shaped, round or oval. Generally not exposed on the surface of the casting, the large holes often exist in isolation, and the small holes &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mnwell.com\/ja\/nine-common-defects-and-prevention-schemes-of-low-pressure-die-casting\/\"> <span class=\"screen-reader-text\">\u4f4e\u5727\u30c0\u30a4\u30ab\u30b9\u30c8\u92f3\u9020\u306b\u3088\u304f\u3042\u308b9\u3064\u306e\u6b20\u9665\u3068\u9632\u6b62\u7b56<\/span> \u3082\u3063\u3068\u8aad\u3080 \"<\/a><\/p>","protected":false},"author":1,"featured_media":1976,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[26],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/posts\/1979"}],"collection":[{"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/comments?post=1979"}],"version-history":[{"count":0,"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/posts\/1979\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/media\/1976"}],"wp:attachment":[{"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/media?parent=1979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/categories?post=1979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mnwell.com\/ja\/wp-json\/wp\/v2\/tags?post=1979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}