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

A problem with precision casting: Solution for iron hammer jamming: In production, temperature should be measured frequently to avoid excessive temperature of the hammer head and cylinder body; Select high-quality impurity free alloy materials to avoid impurities sticking to the hammer head.

The second issue with precision casting is that the injection gun gets stuck in the gooseneck tube. When the equipment is at room temperature, try turning the hammer. If it cannot be turned, replace the barrel and remove the hammer. If you want to quickly solve the problem of getting stuck, it's good to replace the material can.

The third issue with precision casting is that it is impossible to make more than ten molds. Continuing the punching process will take a few minutes. Check if there are any bright spots above your head. If all parts are gray, it indicates nozzle blockage. Appropriately increase the nozzle temperature, reduce the nozzle tapping time by 0.1-0.2 seconds, and slightly turn off the fixed mold cooling water.

The fourth issue of precision casting: solving the problem of easy cracking in thin-walled die-casting products: This problem may be due to material problems, poor mold settings, or improper selection of process parameters. It is recommended to control the scrap rate to no more than 30%, maintain the mold for a long time, and ensure that the ejection delay is not long, usually 0.5-2 seconds per millimeter of wall thickness.

The fifth issue with precision casting is that the material is too hard and the cutting tools are prone to wear. Solution: Adopt a raw material ratio, do not recycle materials, and use gemstone blades specially produced for hard alloys.

The sixth problem of precision casting: black spots during polishing of aluminum alloy die-casting parts. Solution: reduce the concentration of the spraying agent, switch to other spraying agents, or increase the blow molding time after spraying.

The seventh issue of precision casting: metal splashing during the die-casting process. Solution: Reinstall the mold; Increase clamping force, adjust the die-casting machine to keep the moving fixed plate parallel; Add support plates on the mobile mold to improve its rigidity.

The eighth problem of precision casting: flow pattern generation after anodizing of die castings. Solution: Uneven spraying and injection of oil, inappropriate high-speed switching position, or high copper ion content in the oxidation tank can all cause flow pattern problems. Therefore, spraying and injection of oil can be evenly dispersed and not concentrated in local areas, or high-speed switch positions can be set to reduce shortages. Casting phenomenon.

The ninth issue of precision casting: Solution for die-casting mold adhesive: Check if the mold temperature is normal, and appropriately reduce the casting temperature of the alloy liquid and the mold temperature; Check if the release agent ratio is abnormal and try replacing the release agent; Debug the surface of the spraying area and carefully polish the nitriding mold to prevent damage. The surface nitriding layer forms a significant amount of adhesion phenomenon; Improve the design structure of the casting system to avoid continuous erosion of the cavity wall or core by the alloy liquid; Modify the mold cooling system; Adjust the die-casting process parameters, appropriately reduce the injection speed, and shorten the dual speed stroke.