How To Solve The Problems In Yhe Mold Polishing Process 1.Over-polishing The biggest problem encountered in the daily polishing process is “over-polishing”, which means that the longer the polishing time, the worse the quality of the mold surface. There are two phenomena of over-polishing: “orange peel” and “pitting”. Excessive polishing occurs mostly in mechanical polishing.…
Common Mold Polishing Methods And Working Principle In the mold manufacturing process, smooth processing and mirror processing after shape processing are called surface grinding and polishing of parts, which is an important process to improve the quality of the mold. Mastering a reasonable polishing method can improve mold quality and service life, thereby improving product…
Reasons For Color And Gloss Defects Of Injection Molded Products Under normal circumstances, the gloss of the surface of an injection molded part is mainly determined by the type of plastic, the colorant and the finish of the mold surface. However, due to some other reasons, the surface color and gloss defects of the product…
Causes Of Warpage Of Injection Molded Products The deformation, bending and twisting of injection molded products are mainly caused by the fact that the shrinkage rate of the flow direction during plastic molding is larger than that of the vertical direction, so that the shrinkage ratio of the parts is different and warped, and it…
Color Strip Color Flower Analysis Of Injection Molded Products The occurrence of such defects is mainly caused by the problems of plastic parts colored with masterbatch, although the color masterbatch is superior to dry powder coloring and dyeing in terms of color stability, color purity and color migration. Coloring, but the distribution, that is, the…
Thermal Spraying Of Surface Treatment Of Die Castings Thermal spraying is the use of special equipment to heat the solid material to a molten or semi-molten state and accelerate the spraying onto the surface of the substrate to form a special thin layer to improve the surface properties of the substrate. 1. Heat source Flame,…
Causes And Solutions For Die Casting Defects 1. Flow marks, stripes Characteristics: The surface of the casting exhibits a localized sag smooth texture that is consistent with the flow direction of the molten metal. This defect has no development tendency and can be removed by polishing. 2. Cold insulation, cold connection Features: A gap in…
Die Steel Quenching Cooling Technique There are four aspects to be aware of when mold steel is quenched and cooled. They are cooling medium problems, cooling equipment problems, clear mold surface covering problems, and manual operation technical problems. 1. Die steel spray quenching method Large-scale complex, especially thick and thin workpieces and die steels, in…
Reasons For Cracking Of Injection Molded Products Cracking, including filament cracks on the surface of the part, microcracking, whitening, cracking, and damage due to the sticking of the part, the sticking of the flow path, or the traumatic failure, splitting and cracking according to the cracking time. There are mainly the following reasons. 1. Processing…
Analysis Of The Causes Of Bubble Formation In Injection Molding Products The gas of the bubble (vacuum bubble) is very thin and belongs to the vacuum bubble. In general, if a bubble is found at the moment of mold opening, it is a gas interference problem. The formation of vacuum bubbles is due to insufficient…