If you don’t pay attention to the injection mold, there will always be a variety of problems, such as cracking, including surface filiform crack, microcrack, cracking, and deformation cracking due to part sticking, runner sticking or trauma crisis according to the cracking time and application. There are several main reasons:
(1) When processing the die, excessive pressure, too fast processing speed and too much blanking will lead to excessive internal pressure and fracture.
(2) Adjusting the mold opening speed and pressure can prevent the enterprise from rapidly pulling the parts, which will affect the demoulding and cracking.
(3) Properly increase the mold temperature to make the parts easy to demould, properly reduce the material temperature and prevent decay.
(4) Prevent plastic degradation caused by fusion marks and reduction of mechanical strength.
(5) Release agent can be used according to the situation, and excessive impurities attached to the mold surface shall be removed.
(6) Annealing heat treatment immediately after forming can eliminate the residual stress in the workpiece and reduce the formation of cracks.
(1) The recycled material is too high, resulting in too low strength of the die, resulting in quality problems.
(2) Excessive humidity causes chemical reaction between material and water vapor, resulting in low die strength.
(3) Poor material quality, poor processing quality, or contamination will lead to material cracking.
About Huizhou Dj Molding Co., Ltd
Dj Mold is a China mold maker of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer, mold manufacturer China– plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.
Person: James Yuan
Company: Huizhou Dj Molding Company Limited
Add: LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong Province, China
Email: [email protected]