Shanghai Daoqin Plastics Co., Ltd.

         plastics products mold processing how to decrease/reduce defect: will hot rear 淬火应 force reduce to most low degree, is 淬火应 force, carbon 化组织 in abrasion force function lower, generate versus easy make parts generate cracks. combined use cooling lubricated liquid, cooling, 洗涤, lubricated large function, maintain cooling lubricated 清洁, from control abrasion hot in scope/range inner, anti parts hot deformation.

         specific as:

        1, improvement abrasion cooling conditions, using/adopting 浸油砂轮 or inner cooling and other measures. will liquid 引入砂轮 in 心, liquid can 直接进入 abrasion 削区, has cooling function, anti parts surface 烧伤. combined use cooling lubricated liquid, cooling, 洗涤, lubricated large function, maintain cooling lubricated 清洁, from control abrasion hot in scope/range inner, anti parts hot deformation.

        2, will hot rear 淬火应 force reduce to most low degree, is 淬火应 force, carbon 化组织 in abrasion force function lower, generate versus easy make parts generate cracks. for/regarding high degree mold is remove abrasion residual stress, in abrasion rear 应进行 low temperature 时效处理以提 high toughness.

        3, remove abrasion force can will mold in 260～315℃ salt in 浸1.5min, rear in 30℃油 in cooling, this hardness can decline 1HRC, 残留应 force reduce 40%～65%.

        4, for/regarding dimensions in 0.01mm以 inner precision mold precision abrasion need attention/notes ring temperature degree effect/influence, requirements temperature abrasion 削. 由计算 can 知, 300mm long parts, temperature 差3℃时, material has 10.8μm left right 变化, (10.8=1.2×3×3, 每100mm deformation amount 1.2μm/℃), processing 工序都需充 separation this factors effect/influence.

        5, using/adopting electrical understanding abrasion processing, improvement mold manufacturing degree and surface quality. electrical understanding abrasion 削时,砂轮刮 remove oxidation film: is abrasion metal, abrasion force small, abrasion hot small, generate abrasion 削毛刺, cracks, and other phenomenon, generally surface coarse degree can excellent 于Ra0.16μm; another, abrasion loss small, abrasion hard alloy, carbon silicon abrasion loss amount large is abrasion hard alloy weight 400%～600%, use electrical understanding abrasion 削时, abrasion loss amount has hard alloy abrasion remove amount 50%～100%.