Your current location: Home > News

Knowledge summary of common problems in precision casting technology

September 03, 2019

Knowledge summary of common problems in precision casting technology

Industrial technology mainly involves smelting, casting, forging, welding, heat treatment, physical and chemical testing, etc., supplemented by mechanical processing and computer design knowledge. Most people now know stainless steel precision casting, also known as investment casting wax film casting, the process is widely applicable to a variety of castings, but in the casting process will inevitably encounter a series of problems.

The first problem of precision casting: the solution of hammer stuck: In production, the temperature is often measured to avoid the temperature of the hammer and the cylinder being too high; the high-quality impurity-free alloy material is used to prevent the impurities from sticking to the hammer.

The second problem of precision casting: the gun is stuck in the gooseneck: the equipment is at room temperature, try to turn the hammer, if it can not be rotated, replace the barrel and remove the hammer. If you want to quickly solve the stuck problem, it is best to replace the material can.

The third problem with Precision casting is that it is impossible to hit a dozen molds. It takes a few minutes to continue punching. Look at the highlights on the top of the head. If all parts are gray, the nozzle is clogged. Appropriately increase the nozzle temperature, reduce the nozzle tapping time by 0.1 to 0.2 seconds, and slightly close the fixed mold cooling water.

The fourth problem of precision casting: solving the problem of easy cracking of thin-wall die-casting products: this problem may be due to material problems or poor mold setting or improper selection of process parameters. Try to control the proportion of waste products not to exceed 30%, and the mold holding time should not be Too long, and about 3 seconds per mm wall thickness, the ejection delay is not long, generally 0.5-2 seconds.

The fifth problem of precision casting: the material is too hard, the tool is easy to wear. Solution: Using raw material ratio, no recycling material, using gemstone blade specially produced for cemented carbide.

DeZe Machine Co, Ltd

The sixth problem with precision casting: Black spot solutions for aluminum die castings: reduce the spray concentration to other sprays, or increase the blow time after spraying.

The seventh problem of precision casting: metal splash solution in the die casting process: reinstall the mold; increase the clamping force, adjust the die casting machine to keep the moving fixed plate parallel; increase the support plate on the moving mold to improve the mold Stiffness.

The eighth problem of precision casting: the flow pattern generation solution after the anodizing of the die casting: spraying, uneven injection of oil, unsuitable high-speed switching position or excessive copper ion content in the oxidation tank will cause flow problems, so spraying And injection oil can be evenly dispersed, not concentrated in local areas, or set high-speed switch position to reduce the shortage. Casting phenomenon.

The ninth problem of precision casting: solution for die-casting mold adhesive: check whether the mold temperature is normal, properly reduce the casting temperature and mold temperature of the alloy liquid; check whether the release agent ratio is abnormal, try to replace the release agent; And carefully polish the nitride mold to prevent damage. The surface nitriding layer forms more viscous phenomena; improves the design structure of the casting system, avoids the continuous erosion of the alloy liquid on the cavity wall or core; modifies the mold cooling system; adjusts the die casting process parameters, appropriately reduces the injection speed, shortens the double Speed ​​trip.

More products please visit

[email protected]
Edward Yue