Category: Manufacturing Technology knowledge

PA6 polyamide 6 or nylon 6 Typical application range: It is widely used in structural components due to its good mechanical strength and stiffness. It has good wear resistance and is also used to manufacture bearings. Injection mold process conditions: drying treatment: since PA6 is easy to absorb moisture, special attention should be paid to drying before processing. If the material is supplied in waterproof packaging, the container shall be kept closed. If the humidity is greater than 0.2%, it is recommended to dry for 16 hours in hot air above 80C. If the material has been exposed to air for…

PC/ABS polycarbonate and acrylonitrile butadiene styrene copolymer and mixture Typical applications: computer and commercial machine housings, electrical equipment, lawn gardening machines, automobile parts dashboard, interior decoration and wheel covers). Injection mold process conditions: drying treatment: drying treatment before processing is necessary. The humidity should be less than 0.04%, and the recommended drying condition is 90~110C for 2~4h. Melting temperature: 230~300C. Mold temperature: 50~100C. Injection pressure: depending on the plastic part. Injection speed: as high as possible. Chemical and physical characteristics: PC/ABS has the comprehensive characteristics of PC and ABS. For example, ABS is easy to process and PC has excellent…

1、 Mold kernel and mold embryo 1. Before the mold embryo is disassembled, check whether its model and size conform to the drawing, and then mark the mold number and template serial number on the diagonal of the reference angle. It is required to mark the mold number on the square iron mill of each set of mold; Each set of mold guide pillar must also be engraved with mold number with a grinder; The bottom of the guide sleeve is provided with an exhaust groove; The four corners of plate B require the skid pit to be milled, with…

Heat treatment refers to a metal thermal processing process that changes the chemical composition and structure on the surface or inside of materials by means of heating, heat preservation and cooling in the solid state to obtain the required properties. 1. Normalization: Heat the steel or steel parts to the appropriate temperature above the critical point Ac3 or Acm for a certain time and then cool them in air to obtain pearlite like structure. 2. Annealing: heat the hypoeutectoid steel workpiece to 20~40 ° C above AC3, and after a period of heat preservation, slowly cool it in the furnace (or…