(1) Air in the pouring system and mold cavity. (2) Some raw materials contain moisture that has not been removed by drying, and they will vaporize into water vapor at high temperature. (3) Because the temperature is too high during...

(1) High processing accuracy requirements A pair of molds are generally composed of concave molds, convex molds and mold frames, and some may also be multi-piece assembly modules. Therefore, the combination of the upper and lower molds, the combination of...

According to the different casting systems, molds can be divided into three categories: ⑴ Large nozzle mold: the runner and gate are on the parting line, and the product is demolded together with the product during mold opening. The design...

Opening: front mold material, rear mold material, insert material, line material, inclined top material; Open frame: front mold frame, rear mold frame; Thick opening: the front mold cavity is thick, the rear mold cavity is thick, and the parting line...

The hardness used in plastic molds is generally 480 ~ 520HRC, and it can also be nitrided. Due to the need for heat treatment, the processing is more difficult, so the price of the mold is more expensive. If it...

The life of molds of different materials is often different. For this reason, two basic requirements are proposed for the material of the working parts of the die: the performance of the material should have high hardness (58-64HRC) and high...

1. Punching die A die that separates materials along closed or open contour lines. Such as blanking die, punching die, cutting die, cutting die, trimming die, cutting die, etc. 2. Bending die A mold for bending blanks or other blanks...

1. With the advent of high-speed molding machinery, the production speed of plastic products has accelerated. Because the molding temperature is generally between 160 and 350 ° C, some have poor fluidity and fast molding speed, which will cause the...

Two-color mold: two plastic materials are injected on the same injection molding machine and molded in two times, but the product is only molded once. In general, this molding process is also called double injection molding, usually completed by a...

Advantages of hot runner system of plastic mold (1) No nozzle material, no post-processing is required, so that the entire molding process is fully automated, saving working time and improving work efficiency. (2) Low pressure loss. The temperature of the...