Shanghai Daoqin Plastics Co., Ltd.

         mold use in non 常广泛, is improve/increase mold manufacturing process property can, usually is mold hot process, its hot mold Common defect has:淬裂, deformation ultra- 差, hardness 不足, electrical processing cracking, abrasion cracks, mold 早期破 bad and other. can mold hardness is Common defect type type 之一.

         that mold defect causes and anti measures has which? main/primary has below/following large 方面:

        1, temperature degree low, main/primary is due to process temperature degree 不当, temperature system 误差, or cooling methods and other causes formed,应该修 positive process temperature degree,检修校核控 temperature system,装炉时,工 parts combined 理摆放 uniform, dispersion 入槽, prohibited or formed 捆入槽 cooling.

        2, temperature degree high, this is process temperature degree or temperature system 误差造 formed,应当修 positive process temperature degree,检修校核控 temperature system light electrical 牙轴.

        3, 回火, this is 由回火 temperature degree high, temperature system fault/failure or temperature high 时入炉造 formed,应当修 positive process temperature degree,检修校核控 temperature system,不 high 于设置炉 temperature 装入.

        4, cooling 不当, causes is cold time long, cooling selection 不当,淬火介质 temperature degree high cooling property can decline,搅拌 defect or temperature degree high and other, measures:出炉, and other need fast;掌握淬火介质 cooling features;油 temperature 60~80℃, water temperature 30℃ below/following,当淬火 amount large make cooling rise temperature 时,应添 add cooling 淬火介质 or use its it cooling cooling; add strong/high cooling agent 搅拌; in Ms+50℃时取出螺纹研 abrasion parts.

        5, carbon, this is Raw Materials 残留脱 carbon or add hot formed,预 anti measures is can gas add hot, salt add hot, true 空炉, 箱式炉 using/adopting 装箱保护 or use anti oxidation coating material; machine processing amount add large 2~3mm.