• How to improve the quality of molds? Nov 30, 2018
    There are 3 basic ways to improve the quality of molds. Firstly, mold design is the most important step to improve the mold quality. Many factors need to be taken into account, including the selection of steel materials, the usability and safety of mold structure, the machinability of  parts and the convenience of mold maintenance. All above factors should be considered at the very beginning ...
  • The Toughness of Mold Steel Dec 20, 2018
    During the working process, the mold is subjected to impact load. In order to reduce the damage of breakage or chipping during working, the mold steel is required to have certain toughness. There are many factors to influence the toughness of mold steel, like: the chemical composition, grain size, purity, carbide, inclusions of the mold steel, the heat treatment system; also the metallographic str...
  • What is gas-assisted injection molding? Dec 27, 2018
    Gas-assisted injection (modeling) molding, also known as gas injection (shot molding) molding, is a new injection molding process. It is one of the most important developments in the injection molding industry since the advent of reciprocating screw injection machines. Gas-assisted injection molding is an extension of injection molding. It is developed on the basis of injection molding technology ...
  • Requirements of Thin-wall Injection Molding to Mold Feb 15, 2019
    Speed is one of the key factors for the success of thin-wall injection molding. Rapid filling and high pressure can inject molten thermoplastic material into the mold cavity at high speed, to prevent the gate from freezing. If a standard part fills in two seconds, the mold thickness will be reduced by 25%, and the filling time may be reduced by 50% (saving 1 second in time). When thickness decreas...
  • What is double injection mold?
    What is double injection mold? Mar 02, 2019
    Double Injection Mold, also known as two material molding, 2 shot molding or 2K molding, is a manufacturing process used to produce complicated molded parts from two different materials. Two kinds of plastic materials are injected on the same injection machine, and they are formed twice, but the product is only molded out at once. This injection molding is usually completed by one mold and require...
  • Reasons for Weld Line on Plastic Part Apr 04, 2019
    When we get the plastic parts during mold test, we will see some weld lines on them. What's the main reasons for the weld lines? 1. The surface temperature of the injection mold is too cold, and the surface temperature of the mold should be appropriately increased or the local temperature at the welded joint should be changed. 2. The runner is too small, too narrow or too shallow. The diameter of ...
  • The advantages for Hot Runner Mold Apr 22, 2019
    The hot runner mold refers to a mold that uses a heating device to keep the melt in the flow passage from solidifying at all times. Because it is shorter than the traditional mold shot cycle and saves raw materials, hot runner molds are widely used in various industrialized countries and regions in the world today. Shorten cycle The molding cycle is shortened. Because there is no restriction on th...
  • Short Shot Injection Molding Jun 14, 2019
    Insufficient injection is also called short shot. Short shot is the phenomenon of partly incomplete at the end of the material flow, or a part of the cavity filled with dissatisfaction, especially the thin wall area or the end area of the the runner when injection molding. When the melt is cooled down without filling the mold cavity, or the melt does not fill completely after running into the cavi...
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