Key steps in precision die casting technology
2025-01-03
Precision die casting technology is a processing technology used to manufacture high-precision parts, which is widely used in the manufacture of high-precision components in aerospace, electronics, automotive, medical and other fields. The following are the key steps of precision die casting technology:
1. Process design
Process design is a step in precision die casting processing. At this stage, the designer will consider various factors, such as the material of the desired part, the shape and size of the design, and other complexity factors that need to be taken into account. The design will optimise all aspects of the part to ensure that the part will be machined with the standard errors required in the field.
2. Moulding
This step involves making the required models and moulds. During the moulding process, manufacturing specialists will use precision machine tools and CAD/CAM software to determine the shape of the model. The size of the mould is reduced as much as possible and less material needs to be trimmed to better reproduce the size and shape required by the designer.
3. Material Preparation
At this stage, the manufacturing specialist prepares suitable alloy materials for die casting. Such materials typically include zinc, magnesium and aluminium alloys. The key to material preparation is to remove impurities and oxides and to ensure that the material is as pure as possible during processing.
4. Heating and injection
In this step, a heating furnace is used to melt the alloy. The melted alloy will be injected into the mould by means of an injection machine. The injection needs to be fluid enough to ensure that the material fills all the voids in the mould. Precision die casting is usually carried out in a closed environment to ensure the fluidity of the alloy and the shape of the final part, a common die casting environment is an electromagnetic oscillating die casting machine.
5. Cooling
Once the molten alloy has been filled into the mould, the mould needs to be cooled. The cooling process needs to be controlled for the right amount of time and temperature to ensure that the part has the desired success values. This generally takes a certain amount of time, depending on the size and complexity of the part being made, to ensure that the alloy does not distort, stick or become damaged.
6. Separation
Once the original mould has cooled, the corresponding part can be removed from it. This can be achieved by switching the mould on and off. The amount of shrinkage of most alloys that cool will vary depending on the temperature, and the mould design should be adjusted to take this into account, as well as the flow paths to be discharged during injection, cooling times, etc.
7. Clean-up and finish machining
Parts that have been machined may require further clean-up and processing. Sometimes this includes removing flashing or other visual defects. Others include surface preparation, thermal spraying, or other post-processing procedures. If the details of the part are to be further optimised, it may then be subjected to special machining in order to make it even more perfectly suited to the requirements of the desired field.
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sales@cldiecasting.com
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Tongji Road, Shenghui North Industrial Zone, Nantou Town, Zhongshan City, China.
Email：sales@cldiecasting.com
Phone: +86-18676278416 / +86-13726318587
Add: Tongji Road, Shenghui North Industrial Zone, Nantou Town, Zhongshan City, China.
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