Points for Attention in Precision Casting

With the development of industrial technology, the industry covers more and more industries. At present, it mainly involves forging, smelting, welding, casting, physical and chemical testing, heat treatment, etc., and then assists the results with mechanical processing and computer design knowledge. In the Internet age, everyone knows that Liaoning Xingsheng precision casting is more convenient and faster. Precision casting is also called investment casting wax film casting. Its process is widely applicable to various castings, but it is inevitable that a series of problems will be encountered in the casting process.


1. There are black spots when polishing aluminum alloy die castings. Solution: reduce the concentration of spraying agent, change to other spraying agents, or increase the blow molding time after spraying.


2. The shot gun is stuck in the gooseneck: the equipment is at room temperature, try to turn the hammer, if it can't turn, replace the barrel and take out the hammer. If you want to quickly solve the stuck problem, you should replace the material tank.


3. It is impossible for precision casting to hit more than a dozen molds. It takes a few minutes to continue punching. Look for bright spots on the top of your head. If all parts are gray, it means the nozzle is clogged. Properly increase the nozzle temperature, reduce the nozzle knocking time by 0.1 to 0.2 seconds, and turn off the cooling water of the fixed mold slightly.


4. Solve the problem of easy cracking of thin-walled die-casting products: This problem may be due to material problems or poor mold settings or improper selection of process parameters. Try to control the proportion of waste products not to exceed 30%, and the retention time of precision casting molds should not be too long, and Each millimeter of wall thickness is about 3 seconds, and the ejection delay is not long, generally 0.5-2 seconds.


5. The material is too hard, and the tool is easy to wear. Solution: Use raw material ratio, do not recycle materials, and use gem blades specially produced for cemented carbide.

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