Shanghai Daoqin Plastics Co., Ltd.

         plastics mold is plastics processing molding mold, is 由45钢, P20, 718 and other plastics mold made 备. analysis plastics mold 失效, can more good mold R&D. plastics mold 失效形式 has:

        1, type surface abrasion loss and 腐蚀

        1) plastics melt 以一定 pressure in mold cavity inner flow, solid parts from mold in 脱出, for mold molding surface formed scratch, abrasion loss.

        2) plastics in reinforcement resin filler, for mold type surface generate 冲刷, abrasion loss and 腐蚀.

        3) meanwhile plastics processing in chlorine, fluorine and other formed separation hot separation understanding 出腐蚀 gas 体HCl, HF.

         this function, make type surface plating or anti 护层遭 to bad, generate abrasion loss and 腐蚀.

        2, property deformation 失效

        1) plastics type surface pressure, hot can 引起塑 property deformation 失效, especially is small mold in large equipment upper as 时, more easy generate ultra- negative property deformation.

        2) plastics mold using/adopting material material strong/high degree and tough property 不足, deformation resistant force low.

        3) plastics mold type surface hard thin, deformation resistant force or as temperature degree high 于回火 temperature degree versus soft 化.

         this 会导致 mold surface generate 凹陷, 皱纹, 麻点, 棱角堆塌 and other loss bad.

        3, plastics mold fracture

        1) plastics mold complex in many 棱角, thin and other 部位, this local force in generate fracture phenomenon.

        2)由 temperature generate structure force, hot force or 因回火不足, use temperature degree lower, 残余奥氏体转变 formed 马氏体, local 体积膨胀, in mold internal generate 组织应 force 致.

         due to above causes, inner mold lifespan low is outer 1/3-1/5. mold material R&D 者, 应基于 above 方面予以考虑, development more good carbon 素, alloy, combined plastics mold 钢.