Description of Die Casting
Die casting is the process of forcing molten metal under high pressure into mold cavities. Our die casting parts have earned an admirable reputation for their excellent dimensional accuracy and smooth cast surfaces.
Materials of Die Casting
Most die castings are made from nonferrous metals, such as zinc, copper, aluminum, magnesium and lead, but ferrous metal die castings are possible.
Advantages of Die Casting:
1. The ability to produce castings with close dimensional control
2. The ability to produce castings with a good surface finish.
3. The ability to produce castings with thin walls e.g. 1-2.5 mm and therefore of reduced weight
4. The ability to produce castings at a high rate of production
5. Repeatable process
Application of Die Casting
The die casting is ideal for applications where a large quantity of small to medium sized parts are needed with good detail, a fine surface quality and dimensional consistency.
Comparison of Casting Methods:
| Sand Casting | Shell Mould Casting | Gravity Die Casting | Low Pressure Casting | Die Casting | |
| Weight of Casting, kg | 0,1 ... 150 | 0,01 ... 20 | 0,01 ... 50 | 1 ... 70 | 0,01 ... 30 |
| Annual Volume | 1... 5000 | 500... 10000 | 100... 50000 | 100... 10000 | 5000…1000,000 |
| Pattern/Tooling Cost | Relatively low | Relatively. Low/Moderate | Moderate | Moderate | High |
| Cost of Changes | Low | Relatively Low/Moderate | Moderate | Moderate | High |
| Flexibility of Design | Very High | High | High | Relatively High | Relatively High |
| Minimum Wall Thickness, mm | 4 ... 6 | 2 ... 4 | 3 ... 4 | 3 ... 4 | 0.8 ... 1.5 |
| Dimension Accuracy | Fairly Good | Good | Good | Good | Very Good |
| Possible Surface Roughness, Ra | ≥ 6,3 | ≥ 3,2 | ≥ 3,2(2,5) | ≥ 3,2 | ≥ 1,6(0,8) |
| Casting Alloys | AlSi12 AlSi10Mg AlSi7Mg | AlSi10Mg AlSi7Mg | AlSi12 AlSi10Mg AlSi7Mg | AlSi12 AlSi10Mg | AlSi9Cu3Fe AlSi12 AlSi10Mg |
| Delivery Time for Samples, Weeks | 3--6 | 2--4 | 5--12 | 8--15 | 8--20 |
| Special Features | Also heat-treated | Also with sand cores and heat-treated | Also with sand cores and heat-treated | Also heat-treated | Not-Heat-treatable |
Huachao has many years experience of making CNC machining parts. It is enough for us to offer excellent CNC milling parts, casting parts, sheet metal, fasteners and other CNC machining parts for you. If you are interested in our CNC machining parts, please feel free to contact us.
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