Plastic mold factory in changshu the selection principle of steel

The selection of plastic mold and metal stamping die steel is a large part of the mould manufacturing price factors, according to the types of plastic molding, products shape, size precision, appearance quality of products and use requirement, production batch size, etc. , both material cutting, polishing, welding, corrosion, deformation, wear-resisting performance, at the same time considering economy and mould manufacturing conditions and processing method, to choose different types of steel. 1. For forming transparent plastic moulds, such as the lens mold, the mold cavity and core all needs to choose high mirror polishing performance of high-grade imported mold steel, such as 718 ( P20 + Ni class) NAK80 ( P21 class) S136 ( 420 class) , H13 steel, etc. , of which 718, NAK80 for hard state, does not need to heat treatment again; S136 and H13 steel are annealed state, the hardness is commonly HB160 - 200, after rough machining need to vacuum quenching and tempering treatment, the hardness of S136 for HRC40 - commonly 50, the hardness of H13 steel is commonly HRC45 - 55 ( Can be determined according to the specific card number) 。 2. For high quality demand of the appearance, such as small home appliance plastic mold, robot high-grade products such as plastic shell, hairdressing instrument isometric life, mass production mold, the mold cavity and parts with die steel selection is as follows: a) Cavity to choose high mirror polishing performance of high-grade imported steel, such as 718 ( P20 + Ni class) NAK80 ( P21 class) Etc. , are all hard state, do not need to heat treatment. b) Core can choose cheap imports P20 or steel P20 + Ni class, such as 618, 738, 2738, 638, 718, etc. , are pre hardened state; The mass production is not big mould, also can choose domestic plastic die steel or S50C, S55C import high quality carbon steel, etc. 3. General appearance quality requirements for products of mold, the mold cavity and parts with die steel selection is as follows: a) Small, precision mold cavity and core are mid-range of imported or P20 steel P20 + Ni. b) Large and medium-sized mold, plastic molding, no special requirements for steel cavity can choose cheap imports P20 or steel P20 + Ni classes; Core can choose cheap imports quality carbon steel P20 steel or import S50C, S55C etc, also can choose domestic plastic die steel. c) For cavity corrosion dermatoglyph, when corrosion pear pattern should strive to avoid to choose P20 + Ni class 2738 ( 738). Brand. 4. Of precision plastic mold, such as automotive covering parts, medical consumables, aerospace, and other products, due to the mold accuracy requirement as well as the product appearance, strong hardening material is used, usually common S136 quenching process. 5. To no appearance quality requirements, the internal structure of molding material there is no special requirements for mold steel mold, the mold cavity and the parts with die steel choice is as follows: for the large and medium-sized mold, mold can choose cheap imports P20 or steel P20 + Ni class, also can choose to import high quality carbon steel S55C, S50C. Changshu smooth plastic products factory adjacent to the baoan airport, in the beautiful phoenix mountains back, quiet and pure and fresh environment more suitable for manufacturing precision and exquisite mold. We are a modern plastic mold manufacturing, injection molding processing factories, we are not the largest mold factory, but we have the most powerful team, good product development, solving all of the structure and mold technology, to protect your product development. We manufacture business design of medical, military industry, digital, home appliances, aviation and other fields, recognised by the domestic and foreign customers consistent, is also the long-term partner of the United States GE GE, flextronics group of qualified suppliers. Welcome your enquiries - 400 Well up to 9600308, to learn more about information ( www。 szhky。 com. cn） Log on to our website home page, click on the right side of the online customer service consulting, smooth to serve you wholeheartedly.