Why do injection molded parts deform during processing?
Plastic gears, electrical housings and other products are widely used in our lives and play a very important role in our lives. For example, many plastic products used in our lives require Dongguan plastic processing, and injection molded products widely used in the machinery industry also require injection molded product processing. Maybe everyone will encounter deformation when processing injection molded parts, so this editor will simply tell you about this problem.
Why do injection molded parts deform during processing?
1. The phenomenon of cracks on the outside or inside of plastic parts due to long-term or repeated application of stress lower than the mechanical properties of plastics is called stress cracking; the scene of sudden complete rupture due to the stable load of plastic parts at a certain temperature at a certain moment is called stress rupture. The cracks and fractures of some thermoplastic parts exposed to high temperatures are called thermal stress cracks. So the temperature needs to be controlled well.
2. During the material processing process, due to improper flow of molten material in the mold cavity, the surface of the plastic part is uneven, in the shape of annual rings, spirals or clouds. There are cracks in the open space, and there is damage caused by this on the surface of the processed plastic parts. If the processed product is damaged, the product cannot be used normally.
Injection molded parts are widely used in our lives. The deformation of injection molded parts during the processing process will affect the normal use of the product. Therefore, manufacturers of injection molded parts should pay attention to these issues during the production process.