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…
How To Control The Moisture Of Plastic Materials Effectively During plastic injection molding, the influence of moisture on quality of plastic material is great, which not only may result in plastic cracks, whitening, air bubble, but also degrades the plastics and decreases the performance. Therefore, it’s necessary to control the moisture of plastic materials in…
How To Design The Structural Unit Of Die Casting Mold? There are many steps in die-casting mold forming. How to make the structural unit of die-casting mold? 1.Forming part The parts that make up the cavity include: fixed and movable inserts and cores. 2. Formwork Various formwork, frame and other structural parts. The function is…
How To Change The Hardness Of Plastics? 1. The concept and representation of hardness Hardness refers to the ability of a material to resist the pressing of other hard objects into its surface. The magnitude of the hardness value is a conditional quantitative representation of the degree of softness and hardness of the material. It…
Three Common Polishing Methods For Precision Stamping Dies There are two main purposes for polishing precision stamping dies. One is to increase the brightness and precision of precision molds. The second is to make the mold easy to demould. In the polishing process, the coarse oil stone is generally used first, and the surface of…
Type Of Cooling In Plastic Extrusion There are two main purposes for polishing precision stamping dies. One is to increase the brightness and precision of precision molds. The second is to make the mold easy to demould. In the polishing process, the coarse oil stone is generally used first, and the surface of the machined…