Cast aluminum The aluminum suitable for the die-casting process is die-cast aluminum, usually die-cast aluminum alloy. It has a high-tech core pulling and cooling system. Typically, material is fed into the cavity through a central inlet for casting to form the part. HowIt'sSolutionCast aluminumThe main advantages?

1,Good product quality:

Dimensional accuracy of castingsCompareHigh, generally equal6~7, even as high as 4; the surface finish is good, generally equivalent to 5~8; the strength and hardness are higher, the strength is generally 25 ~ 30% higher than that of sand casting, but the elongation is reduced by about 70%. Dimensional stability and good interchangeability; it canCast aluminumThin-walled complex castings. For example, currently zinc alloysCast aluminumThe small wall thickness of the part can reach0.3mm; Aluminum alloy castings can reach 0.5mm; Small casting aperture is 0.7mm; Small spacing is 0.75mm.

2、High production efficiency:

High machine productivity. For example, domesticCast aluminumThe average machine can be in eight hoursCast aluminum600-700 times, small hot chamberCast aluminumMachineCast aluminum3000-7000 times.Cast aluminumThe mold has a long service life. a pairCast aluminummold andCast aluminumThe life of the bell alloy is hundreds of thousands or even millions of times. Easy to achieve mechanization and automation.

3,Excellent economic benefits:

DueCast aluminumThe dimensions of the parts are precise, so the surface is smooth and clean. Usually, it is not used for mechanical processing but used directly, or the processing volume is small, which not only improves the metal utilization rate, but also reduces a large number of processing equipment and working hours; the casting price is cheap;Cast aluminumcan be used with other metallic or non-metallic materials. It not only saves assembly man-hours, but also saves metal.

In addition, inCast aluminumThe process is prone to shrinkage and porosity problems,Cast aluminumManufacturerPrevent shrinkage and shrinkageLooseThe basic principle is to formulate the correct casting process according to the shrinkage and solidification characteristics of the alloy, so that the casting can establish good shrinkage conditions during the solidification process and make it solidify. Reduce porosity as much as possible. Holes and shrinkage occur during solidification of the casting. In this way, a riser of a certain size is placed at the position where the cast aluminum casting is solidified, and the cast aluminum part concentrates the shrinkage cavity in the riser, or opens the gate at the solidification position to feed directly. In order to establish good feeding conditions during the solidification process of the casting, the main reason is to control the solidification direction of the casting to make it conform"Principle of Directional Solidification" or "Principle of Simultaneous Solidification".

The introduction position of the gate system has an important influence on the temperature distribution of cast aluminum castings. Adjusting the casting temperature and casting speed of the liquid metal can enhance directional solidification or simultaneous solidification.