• What is Ejector Marks? Apr 12, 2019
    Ejector mark is the phenomenon of stress whitening and stress elevation where appears on the opposite side of the nozzle facing the product, or where the ejector rod is located on the ejecting side of the tool. Why will it cause the ejector marks? The physical reason is when the demoulding force is too high or the surface of the ejector rod is relatively small, the surface pressure will be very hi...
  • Mold Texture Discussion Apr 12, 2019
    Texture is a common process for mold surface treatment, which directly affects the appearance and surface strength of the product surface. Mold texture, also known as mold etching, mold graning, is widely used due to its low process cost, rich effect and fast speed.  It's use chemical liquid (such as sulfuric acid, nitric acid, etc.) to chemically react with the mold steel, and the reaction p...
  • Injection Mold Cooling Water Leakage Failure and Troubleshooting Apr 22, 2019
    Injection mold cooling water leakage is a frequent occurrence, for many reasons, mainly in the following aspects: 1. The most occurs at the joint of the mold cooling water pipe. If water leakage is found, the sealing tape should be wound around the thread of the pipe joint and then tightened. 2. Due to long-term molding conditions, the waterproof ring inside the mold will be damaged, and the O-sha...
  • Preparations Before Mold Trial Apr 26, 2019
    Mold trial is an essential part of the new mold before injection production, The quality of the test results will directly affect whether the subsequent production of the factory is smooth. What precautions should be paid attention to when test the mold? 1. Familar with the relevant information of the mold It is better to get the mold drawing, analyze it in detail, and get the mold technician to p...
  • Cooling System in Injection Molding (1) Apr 26, 2019
    The design of cooling system is very important in injection moulding. This is because only when the plastic parts are cooled and solidified to a certain hardness, can the plastic parts be avoided from deformation due to external force after demoulding.  Because the cooling time accounts for about 70% - 80% of the whole cycling time in moulding, a well-designed cooling system can greatly short...
  • The program control of injection speed Apr 26, 2019
    The program control of the injection speed is to divide the injection stroke of the screw into 3 to 4 stages, and each of the stages uses an appropriate injection speed. For example, when the molten plastic just starts to pass through the gate, the injection speed is slowed down, and during the filling process, high-speed injection is used, and the speed is slowed down at the end of filling. With ...
  • The main factors affecting mold life May 20, 2019
    The main factors affecting mold life. 1. The structure of the mold -effective mold structure helps to improve the load carrying capacity of the mold and reduce the mechanical load on the mold; 2. The material of the mold - should be selected according to the size of the production batch of the product parts;  The hardened mold will bring more shots and meet the high require for the mold treat...
  • The meaning of molding May 20, 2019
    Molding is a high quality, high efficient, low loss, strong adaptation manufacture technology. it's a valuable wealth in the society. Cause of the modernization of mold production technology, nowdays , mold has been widely used in the production of electric motors and electrical products, electronic computer products, instruments, household appliances and office equipment, automobiles, ordnance, g...
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A total of 22 pages

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