Shanghai Daoqin Plastics Co., Ltd.

        一, tensile cold 冲模材 material selection

        若 by processing selection material is iron material, using/adopting types mold or iron, in has using/adopting combined surface treatment lower, generally very difficult solution parts issues.

         from mold 凸, 凹模材 material solution parts issues, can using/adopting hard alloy, generally lower, this type of material made as 凸, resistant property can very high, in issues is material cost high, easy processing, for/regarding relatively large type mold, due to made large type hard alloy block relatively difficult, make made formed 功, processing process has can can cracking, formed rate low, has difficult formed 形. in addition hard alloy property 脆, 搬运, use process in need its small 心, has 不慎就 has can can 出现崩 block or cracking waste. another due to hard alloy structure is hard carbon pellets and soft adhesion versus 钻 组 formed, hard carbon pellets wear resistant resistant combined property can very high, versus due to hardness very low, wear resistance relatively 差, use process in versus excellent abrasion loss, make 凸, surface formed 凹凸不平, production 出 工 parts surface 也会出现拉痕, 此时需 for mold 凸, surface 进行研 abrasion light rear can again production. for/regarding 奥氏体不锈钢工 parts, due to its 面心立方 structure easy and versus formed combined make parts surface 出现拉伤.

         using/adopting combined copper alloy can solution parts issues, copper alloy generally hardness relatively low, easy abrasion loss ultra- 差, in large amount production lower, this type of material property comparison low.

         for/regarding relatively large type mold, automotive cover/cap parts formed mold, a large amount of using/adopting alloy iron, iron can decrease light parts 拉伤, method remove issues, need solution issues 需辅以渗 nitrogen, hard and other surface treatment. 但如此 made as mold lifespan relatively short, in use time rear, 如出现拉伤, also 需修模并 heavy new surface treatment.

         in mold material 方面, has using/adopting made as mold 凸, 凹模并 formed solution parts issues 报道. due to its property 脆, cost high, can can large amount application.

         for/regarding production amount very small 而形状 simple large type tensile type mold, has using/adopting and other polymer/macromolecule type material made as mold 凸, 凹模 报道, type mold 不会拉伤工 parts surface, 但实际 application very less.

        二, solution tensile 模拉伤 issues methods

         solution mold and parts formed process in issues 应依照 decrease small viscous abrasion loss basic 原则, through 改变接触副 property as is 出发点. below/following formed for 接触副 3方, by formed parts Raw Materials 方面, parts and mold between, mold separation 别予以 analysis.

        1. by formed parts Raw Materials 方面

         through for Raw Materials surface treatment, for Raw Materials 进行磷化, or other surface treatment, make by formed material surface formed non metal 模层, can large large decrease light or remove parts 拉伤, this type of methods cost relatively high, need add another production equipment and increase production 工序, tube/pipe this type of methods has has 效果, production in application very less.

        2.工 parts and mold between

         in mold and formed material between add 一层PVC之 type film, has can solution parts issues. for/regarding production through machine can to 连续供 to film, for/regarding cycle production pressure equipment, production parts parts add film, effect/influence production efficiency, methods generally cost very high, also production a large amount of waste material, for/regarding small amount large type parts production using/adopting types methods is can 取.

         in formed negative very small combined, has through add lubricated or add EP additives lubricated can solution parts issues.

        3. mold 方面

         through mold 凸, 凹墨材 material or for mold 凸, 凹模进行 surface treatment, make by formed material and 凸, this 样接触副 property 质发生改变. 实践证明, this is solution issues 经济而 has methods, is currently using/adopting methods.