Fundição injectada de alumínio
A fundição sob pressão de alumínio é um processo em que o líquido da liga de alumínio fundido é injetado num molde a alta pressão e depois solidificado, arrefecido e são utilizados outros processos para obter peças fundidas sob pressão em liga de alumínio. A liga de alumínio tem boa fluidez e capacidade de processamento, o que é propício para a produção de produtos de liga de alumínio de alta qualidade.
- Os produtos de fundição injectada de alumínio têm uma elevada complexidade de forma
- Pode produzir peças de liga de alumínio de grande e pequeno porte, de alta resistência e leves
- O custo é baixo, o ciclo é curto e pode ser produzido em lotes.
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O nosso processo de fundição de alumínio sob pressão
O processo de seleção de fundição injectada de alumínio é selecionado de acordo com o desenho da peça necessária. Por exemplo, a fundição sob pressão é mais adequada para a produção de peças fundidas de liga de alumínio de pequena e média dimensão e complexas. A fundição por gravidade é mais adequada para a produção de peças fundidas de liga de alumínio grandes e simples. De acordo com a utilização das peças, podemos também efetuar o processamento subsequente e o processamento das peças fundidas para melhorar a qualidade e o desempenho dos produtos.
Fundição injectada de alta pressão em alumínio
O alumínio líquido é introduzido na cavidade de fundição a alta velocidade e sob alta pressão, e o metal ou liga é solidificado sob pressão para formar um método de fundição. A pressão normalmente utilizada na fundição sob pressão é de 4-500MPa, e a velocidade de enchimento do metal é de 0,5-120m/s. Por conseguinte, o tempo de enchimento do metal fundido é muito curto, e a cavidade pode ser preenchida em cerca de 0,01-0,2 segundos (dependendo do tamanho da peça fundida).
Fundição injectada de baixa pressão em alumínio
Sob a ação da pressão do gás, o alumínio metálico líquido sobe ao longo do tubo ascendente para o jito, entra suavemente na cavidade através da entrada e mantém a pressão do gás na superfície do líquido no cadinho até que a fundição esteja totalmente solidificada. Em seguida, a pressão do gás na superfície do líquido é libertada, permitindo que o metal fundido não solidificado no tubo ascendente flua de volta para o cadinho.
Fundição de alumínio por gravidade
O alumínio fundido da fundição por gravidade é geralmente despejado no portão, e a cavidade é preenchida pelo peso próprio do metal fundido, exaurido, resfriado e o molde é aberto para obter a amostra. A fundição em molde de metal pode ser dividida em fundição manual vertical e a fundição inclinada é atualmente a fundição em molde de metal (molde de aço) mais utilizada.
Molde de alumínio fundido sob pressão
As vantagens dos moldes de fundição sob pressão de material de liga de alumínio são a elevada eficiência de produção, o baixo custo e a boa qualidade do produto. Pode fabricar peças e produtos de liga de alumínio qualificados num curto espaço de tempo. O molde de fundição sob pressão de material de liga de alumínio é uma ferramenta de fabrico eficiente e económica. É amplamente utilizado não só na indústria automóvel, eletrónica, maquinaria e outras indústrias, mas também noutros campos.
Como escolher materiais de fundição sob pressão de alumínio
A seleção do material de liga de alumínio adequado é muito importante para a produção de peças de fundição sob pressão de liga de alumínio. Ao selecionar o material de aço do molde de fundição sob pressão de liga de alumínio, o desempenho de deformação e anti-expansão do material a alta temperatura deve ser tido em consideração para garantir a eficiência da produção e a qualidade do molde de fundição sob pressão de liga de alumínio.
A380
A fundição injectada de liga de alumínio A380 é um dos materiais de liga de alumínio mais utilizados. Possui uma combinação perfeita de propriedades de fundição e mecânicas; possui também excelente fluidez, estanquidade ao ar, resistência a fissuras térmicas e maquinabilidade
A360
O material da liga de alumínio A360 é fácil de moldar por compressão. Devido à sua facilidade de fundição, é uma excelente escolha para peças que requerem designs complexos. As suas propriedades de leveza e resistência à corrosão tornam-no uma opção atractiva para produtos que necessitam de um material durável mas não demasiado pesado.
A356
A fundição de A356 oferece várias vantagens, incluindo a relação custo-eficácia, a flexibilidade e excelentes propriedades mecânicas. Tem também um bom acabamento superficial, que pode produzir peças de alta qualidade que requerem menos operações secundárias. O A356 torna-se o material perfeito para aplicações na indústria naval.
ADC12
O material de liga de alumínio ADC12 é uma liga de alumínio-silício com boa capacidade de fundição, propriedades mecânicas e resistência à corrosão, e é amplamente utilizado nos domínios dos automóveis, motociclos, aparelhos eléctricos, equipamento mecânico e assim por diante.
ADC10
O material de liga de alumínio ADC10 é um material versátil e económico que também pode ser utilizado em ambientes agressivos devido à sua excelente resistência à corrosão. O material de liga ADC10 é também leve e dúctil, o que o torna fácil de maquinar e soldar.
A413
O A413 é uma liga de alumínio com elevado teor de silício, normalmente cerca de 12%, e a sua excelente relação resistência/peso, resistência à corrosão e boa maquinabilidade fazem dele uma excelente escolha para peças altamente complexas que requerem detalhes intrincados.
Mindwell é um fabricante de fundição injectada de alumínio que integra a abertura do molde, a fundição injectada e o processamento. A empresa tem uma equipa técnica experiente, excelente equipamento de processamento de fundição sob pressão, é um fabricante de fundição sob pressão de liga de alumínio com vantagens no campo.
Máquina de fundição injetada com câmara quente
A máquina de fundição injetada com câmara quente é um processo no qual os materiais metálicos são aquecidos até ao estado líquido e depois injetados num molde para formar o produto desejado sob alta pressão. As máquinas de fundição injetada com câmara quente são geralmente adequadas para situações em que as necessidades de produção são grandes e podem atingir uma produção contínua. Como as ligas de alumínio são propensas à oxidação, a máquina de fundição injetada com câmara quente precisa adicionar gás protetor durante a produção para proteger a vida útil da liga de alumínio e do molde, mas o custo de produção também é relativamente alto.
Máquina de fundição injetada com câmara fria
A máquina de fundição injetada com câmara fria adota um processo de fabricação de "pré-fundição", que primeiro aquece o material metálico até o estado líquido, depois o derrama em um forno de pré-fundição para fundição e, por fim, usa o resfriamento a água para formar o produto desejado. As máquinas de fundição injetada com câmara fria são geralmente adequadas para situações em que a procura de produção é pequena, e são normalmente utilizadas quando a estrutura do produto produzido é mais complexa. Em comparação com as máquinas de fundição injetada com câmara quente, o seu custo de produção é inferior, mas existe também o problema da eficiência de produção relativamente baixa.
O tipo de máquina de fundição injetada de liga de alumínio a escolher deve ser selecionado de acordo com as necessidades específicas de produção. Se for necessária uma produção em grande escala, eficiente e contínua, é normalmente escolhida uma máquina de fundição injetada com câmara quente; e se for necessária uma produção pequena e de baixo custo, é normalmente escolhida uma máquina de fundição injetada com câmara fria.
Definição dos parâmetros
Ao realizar a moldagem por fundição injetada, é necessário selecionar a temperatura, a pressão e a velocidade adequadas para o processamento de acordo com os diferentes materiais e formas do produto. Além disso, também é necessário ter em conta factores como as propriedades físicas e químicas da liga de alumínio fundido, o arrefecimento do molde, etc. Finalmente, é necessário o pós-processamento do produto, incluindo rebarbação, retificação, pulverização e outras etapas para obter o aspeto e os efeitos funcionais esperados.
Fabrico de moldes
O fabrico de moldes é um dos aspectos mais complexos e demorados da fundição injectada de liga de alumínio. A qualidade dos moldes afecta diretamente a precisão e o acabamento superficial dos produtos. Por conseguinte, é necessário um controlo preciso dos materiais, das técnicas de processamento, das dimensões e dos desvios durante o processo de fabrico. Ao mesmo tempo, são também necessárias inspecções e testes rigorosos para garantir a qualidade e a estabilidade do molde.
Comece agora com fundição sob pressão de alumínio personalizado de acordo com suas necessidades！
Acabamentos de superfície da fundição injectada de alumínio
The surface treatment of die castings is to improve the surface state of die castings, thicken the surface oxide film or form a new surface mold, so as to improve the corrosion resistance, decoration or other required characteristics of the surface of die castings.
Commonly used surface treatment methods for die castings include chemical conversion treatment, anodic oxidation treatment, electroplating and coating, etc. In order to obtain satisfactory surface treatment effects, die castings need to be pretreated before treatment, including mechanical pretreatment (grinding, polishing, sandblasting, etc.) and chemical pretreatment (degreasing, pickling and alkali cleaning)
Common surface treatment processes for aluminum alloy die castings are as follows:
- Phosphating of aluminum
- Alkaline electrolytic polishing process for aluminu
- Environmentally friendly chemical polishing of aluminum and aluminum alloys
- Electrochemical surface strengthening of aluminum and its alloys
- Surface oxidation treatment technology of YL112 aluminum alloy
Related Aluminum Die Casting Products
Our company specializes in various aluminum alloy casting processes, and our products include various radiator heads, valve bodies,caixa de alumínio, peças para automóveis, pipe joints, conductors, mechanical supplies and other series of products.
Application of Aluminum Die Casting
Aluminum alloy die-casting products are currently mainly used in auto parts, electronic casings, communications, motors, aviation, ships, home appliances, furniture accessories, digital casings, handicrafts, security product casings, LED lighting (lampshades) and some new energy industries
Advantages of choosing MindWell Custom Aluminum Die Casting
Through advanced die-casting technology, MindWell custom-manufactures aluminum die-casting parts of various highly accurate shapes and sizes, providing various complex design requirements, including detailed structures and precise dimensional control
Leading aluminum die casting manufacturer in China
- Mindwell has a team of engineers with strong skills and rich experience.
- Strict 6S management, adopting international production management model, establishing and improving operating standards for each process.
- More than a dozen sets of advanced processing equipment.
- Project management and ERP systems ensure delivery on time.
- Enhance lean manufacturing and optimize supply chain collaboration to reduce costs
- Provide one-stop service from accessory design to finished product packaging and shipment
Aluminum alloy die casting process flow
The process flow of aluminum alloy die-casting is generally divided into five steps, among which casting design and mold manufacturing are the key links:
- Casting design
- Fabrico de moldes
- Smelting aluminum alloy
- Fundição injectada
- Post-processing
- Assembling and packaging
SOBRE NÓS
Mindwell - Professional custom aluminum die-casting service manufacturer in China
As a professional manufacturer of aluminum alloy die-casting parts in China, Mindwell always adheres to the service concept of “long-term cooperation” and insists on providing customers with high-quality, high-performance aluminum alloy die-casting products from the customer’s perspective.
Truly meet customer customization needs
Mindwell provides customized services. Based on the customer’s parts usage needs, it fully considers the actual use of customized aluminum die-casting parts in all aspects of product design, material selection, production, and manufacturing, and focuses on understanding the special requirements of the customer’s industry, so as to make To produce aluminum alloy die-casting products that are more suitable for customer needs. This allows customers to enjoy high-quality, high-performance products while also receiving more intelligent and personalized services.
Strong technical strength
Mindwell is equipped with advanced die-casting equipment and testing equipment and has established close technical cooperation relationships with professional quality inspection institutions, constantly accumulating and precipitating technical strength. At the same time, Mindwell has a professional technical team, each technician has rich experience and superb skills and can provide customers with all-round, one-stop technical support and services. As a result, the company has always been in a leading position among China’s aluminum alloy die-casting manufacturers.
Strict quality control
Aluminum alloy die castings are complex components with high strength, high toughness, and high precision. Their quality directly affects customers’ product performance, safety, market competitiveness, and other aspects. Therefore, Mindwell Company strictly controls every step of the production process, from raw material procurement, inspection, and warehousing, to the production process, to shipping inspection. Every step is carefully and scientifically monitored to ensure that the products are shipped out of the factory. Quality meets customer expectations.
Comprehensive service system
Under the concept of customer first, Mindwell has established a comprehensive pre-sales, sales, and after-sales service system. In the pre-sales stage, the company fully communicates with customers, understands their needs, and solves their actual needs through technical support, sample production, mold development, etc.; in the mid-sales stage, the company assigns professional account managers to each customer to follow up with them throughout the process. orders and timely feedback on order progress; during the after-sales stage, the company promptly follows up on customer complaints based on customer feedback, handles customer issues in a timely manner, and ensures customer satisfaction and loyalty.
Continuous innovation replaces backwardness and elimination
In the context of increasingly fierce competition in the global market, what competes with each other is scientific and technological strength and innovation capabilities. Aluminum alloy die-casting products have always been in a leading position in the market due to their high efficiency, strength, and quality. Mindwell pays attention to new market trends in every aspect, from equipment updates, and staff training, to the development of new materials, and follows up on the latest technology and material changes to obtain new technologies and new quality upgrades.
Como aluminum alloy die-casting manufacturer that pays attention to customer needs and emphasizes service details, Mindwell stands out among many competitors with its high-quality products, excellent technology, strict quality control, and comprehensive services, and has won the trust of customers. and support. In the future development, Mindwell company will continue to improve the level of products and services. If you are considering customizing aluminum die-casting products, please contact us directly. You can also send us drawings.
Aluminum die casting related FAQs
As a professional aluminum die-casting manufacturer in China, Mindwell has rich experience and ideas in innovation and research and development in the aluminum die-casting industry, which we share with you here.
O que é a fundição injectada de alumínio?
The aluminum alloy die-casting process is an efficient and precision casting process that injects high-temperature, high-pressure liquid metal into the casting mold to quickly cool it and form aluminum alloy parts with good mechanical properties and surface quality.
For aluminum castings, there are three main casting processes:
- pressure casting
- gravity casting
- Extrusion casting
The whole casting process can be summarized into the following steps:
- Aluminum/aluminum alloy melting
- model making
- Casting solidifies
- molding
- Clean.
Three aluminum casting processes are introduced below:
- Pressure casting, referred to as die casting, refers to the process of instantly injecting molten aluminum or aluminum alloy into the casting cavity of a mold under the action of external forces other than gravity. Pressure casting can be further subdivided into vacuum casting, centrifugal casting, low-pressure casting, pressure casting, and casting that relies on the pressure of the die-casting machine.
- Gravity casting refers to the process in which molten aluminum or aluminum alloy flows into the casting cavity of the mold by its own gravity. Gravity casting can be refined into the sand casting process and hard mold casting process.The sand casting process is very suitable for single-piece or mass production of aluminum castings because the mold materials used are cheap and easy to obtain, and the process method is relatively simple. Therefore, it can be said to be the “basic operation” in the aluminum casting manufacturing process.The hard mold casting process is also called the metal mold casting process. It is a process in which liquid aluminum or liquid aluminum alloy is injected into the metal casting mold and the casting is obtained after cooling and solidification. Metal molds are usually made of higher-strength aluminum alloys or other hard metals and can be used repeatedly. The entire process can be understood as injection molding.
- The squeeze casting process is also called the liquid die forging process. The specific process is to pour aluminum or aluminum alloy in the molten state directly into the open mold, and then seal the mold to allow the liquid aluminum or aluminum alloy to flow into the mold. The flow is filled to the shape outside the mold, and then high pressure is applied to the mold to cause plastic deformation of the solidified aluminum/aluminum alloy in the mold. The unsolidified aluminum/aluminum alloy will undergo high-pressure solidification while undergoing isostatic pressure and finally form aluminum/aluminum alloy castings.
For now, the above manufacturing processes for aluminum castings are the most commonly used in the industry and are relatively low-cost. In addition to the above-mentioned, there are also ceramic casting, plaster casting, and other technologies.
In addition, when aluminum castings are manufactured, the surface of the mold cavity used has a high smoothness and is also sprayed with a refractory coating made of refractory materials and high-temperature adhesives, so the surface of the aluminum castings produced is also very smooth and flat. , superior to other ordinary metal castings. This also gives aluminum castings a very significant advantage – the surface is smooth and the castings are high-precision, so the workload can be reduced during processing operations, but at the same time, there is not much machining allowance for those small and precise parts. The aluminum/aluminum alloy castings produced in this way do not require machining and can be used simply by grinding and polishing the remaining parts, which greatly saves processing time and labor costs, and also saves a lot of pure aluminum/aluminum alloy raw materials.
What is the best aluminum for die casting?
Die-cast aluminum alloy is a cast aluminum alloy material, which is characterized by good fluidity, low price, corrosion resistance, low density, easy to oxidize, easy to corrode, easy to produce pores, low melting point, etc. The aluminum alloy material of each model is also different.
A356 has the highest conductivity, and the lowest is A380 and ADC12.
A380 and ADC12 have the highest tensile limit, while A356 has the lowest
A360 has the best yield strength
LM5 has the highest elongation rate
ADC12 performs well in all aspects, is relatively balanced, has no outstanding features and has no shortcomings. It is a material commonly used in the cast aluminum industry. 80% of MINDWELL’s products use ADC12. The products produced by this material have strong bearing capacity and mechanical strength. It has high performance, good cutting performance, good demoulding performance, high casting pass rate, is especially friendly to thin-walled parts, and can meet the requirements of high-performance aluminum alloy die castings.
How much does aluminium die casting cost?
The cost of aluminum die castings mainly includes the following parts:
- Aluminum alloy material cost: Depending on the size and weight of the die-casting, a certain amount of aluminum alloy material needs to be consumed. This cost is related to factors such as the model, quality, and market price of the aluminum alloy.
- Mold making costs: Aluminum die-casting molds require sophisticated design and production, so the cost of this part is relatively high.
- Die casting processing costs: including die casting, cooling, demoulding, trimming and other processes.
- Other costs: including equipment depreciation, management costs, transportation costs, etc.
Taking into consideration the above expenses, the cost of aluminum die-casting parts will vary depending on factors such as model, specification, material, etc. Generally speaking, the cost of aluminum die-casting parts ranges from tens to hundreds of yuan. The specific cost needs to be calculated based on actual conditions and specific production processes.
Aluminum alloy die casting design guide
The reasonableness of the design of die casting is related to the entire die casting molding process, in the design of die casting, should give full consideration to the structural characteristics of the die casting, die casting process requirements, try to minimize the occurrence of defects of the design of die casting in the die casting molding process, in order to the optimal design scheme to maximize the improvement of the quality of the die casting.
Reasonable design die casting wall thickness
- Aluminum alloy die-casting structure design should give full consideration to wall thickness, wall thickness is of special significance in the die-casting process, wall thickness, and the whole process specification have a close relationship, such as the calculation of filling time, the selection of the speed of the inner gate, the calculation of solidification time, the analysis of the mold temperature gradient, the role of the pressure (the final pressure), the length of time to stay in the mold, casting ejector temperature and operating efficiency;
- Designing the wall thickness too thick will result in external surface defects such as shrinkage holes, sand holes, air holes, coarse internal grains, etc., which will make the mechanical properties decrease and the quality of the part increase resulting in higher costs;
- Design wall thickness is too thin will cause poor filling of aluminum liquid, and molding difficulties, so the aluminum alloy dissolution is not good, easy to appear casting surface filling difficulties, lack of material and other defects, and the die casting process brings difficulties;
- Die casting with the increase of air holes, internal air holes, shrinkage holes, and other defects, so in order to ensure that the casting has enough strength and stiffness under the premise, should try to reduce the casting wall thickness and keep the cross-section of the thickness of uniformity.
Reasonable design of die-casting reinforcement
For large plane or thin wall die casting, its strength, and rigidity are poor, and easy to deform, then the use of a reinforcing bar can effectively prevent the die casting shrinkage, and fracture, eliminate deformation, enhance the strength and rigidity of the die casting, for too high columns, tables and other structures, can use reinforcing bar to improve the distribution of stress conditions, to prevent the root of the fracture, and at the same time reinforcing bar can assist in the flow of melted metal to improve the casting of the filler performance.
Reinforcement of the root thickness is not greater than the thickness of the wall here, the general thickness is designed for 0.8 ~ 2.0mm; reinforcement of the mold release slope is generally designed for 1 ° ~ 3 °, the higher the design of the mold release slope is smaller; reinforcement of the root need to add rounded corners, in order to avoid sharp changes in the cross-section of the part, and at the same time to assist in the flow of molten metal to reduce stress concentration in the parts, to enhance the strength of the parts, rounded corners are generally close to the wall thickness here; Reinforcement height is generally not more than 5 times its thickness, reinforcement thickness is generally required to be uniform, if the design is too thin, reinforcement itself is easy to fracture, if too thick, it is easy to produce depression, porosity, and other defects.
Reasonable design die-casting mold slope
The role of die casting mold slope is to reduce the casting and mold cavity friction, easy to take out the casting; Ensure that the die-casting surface is not strained, and at the same time extend the life of the mold. Die casting slope and the height of the die casting, the greater the height, the smaller the slope of the mold. In general, the outer surface of the die-casting mold out of the slope for the inner cavity out of the mold slope of about 1/2, but in the actual design, can be die-casting inside and outside the surface of the mold out of the slope design for the same, in order to maintain a uniform wall thickness, simplify the structural design.
Reasonable design processing allowance
Die casting design should try to avoid machining, machining will destroy the surface of the parts of the dense layer, affecting the mechanical properties of the parts; will make the die casting of the internal pores exposed, affecting the surface quality, but also increase the cost of parts. Die casting can’t avoid machining, one should try to avoid the design of large cutting amounts, and structural design as much as possible to facilitate the machine or reduce the machine area, to reduce the cost of the machine.
Die casting on the part of the higher dimensional accuracy requirements, or some plane surface roughness requirements, die casting process is difficult to meet the requirements, this time it is necessary to carry out subsequent processing, on this part of the structure, the design should try to reserve machining allowance. Die casting surface strength, hardness than the internal high, machining should pay attention to retain the surface of the densification, so the machining allowance can not be excessive allowance, machine plus too much is likely to produce porosity and external surface defects.
Aluminum alloy die casting spraying design
Die casting surface coating design generally uses a powder spraying process, the principle of electrostatic powder spraying: mainly through the electrode will paint polarization, and then the object to be sprayed with the opposite charge, in the electric field force under the action of the powder uniformly attached to the surface of the object. Powder spraying process features: powder electrostatic spraying does not cause air pollution, powder can be recycled to reduce the cost of material consumption, film performance acid, alkali, corrosion resistance is good.
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