Shanghai Daoqin Plastics Co., Ltd.

        冲 pressure mold carbon is processing mold in important 工序之一,也 is pressure mold processing 工序,但 is pressure mold in 经 渗 carbon is easy 出现一 defect, from 而导致 mold processing formed rear 会出现一 defect. about/regarding pressure mold carbon 工序时 Common has large defect.

        一, hardness low

        残余奥氏体 amount more is formed pressure mold hardness low causes 之一,渗 carbon in 残余奥氏体 amount more is due to carbon temperature degree high surface carbon concentrated degree high 缘故,造 formed pressure mold hardness low causes is surface carbon concentrated degree low,造 formed surface carbon concentrated degree low causes is:渗 carbon temperature degree low;渗 carbon gas amount small; true 空淬火油 in absorption more amount gas; other type,例如油缸油 a large amount of mixed true 空淬火油 in and other.

        二, carbon deep degree to technology conditions requirements

        造 formed pressure mold carbon deep degree ultra- requirements causes is carbon temperature degree high or carbon time long, deep degree low technology conditions requirements causes is carbon temperature degree low or carbon time short.

        三, pressure mold 本身渗 carbon non-uniform

        造 formed this type of causes can can is:渗 carbon gas in mixed 入 空 gas;没 using/adopting 脉冲渗 carbon methods;渗 carbon gas pressure low;装炉 amount more 密;渗 carbon gas pure degree low, generate relatively more and other.

        四, more,冲 pressure mold upper has 炭黑

         in carbon process in generate more amount 炭黑时, can can formed add hot device and 炉体, add hot device and add hot device electrical short 路, add heavy equipment repair as amount; make pressure mold small 孔堵塞,渗 carbon non-uniform, add large remove parts surface 炭黑 工 as amount.

        五, pressure mold light degree 恶化

        冲 pressure mold in true carbon gas cold rear 出炉时应呈银 white, if 出炉时 parts light degree 恶化, causes can can is:炉子 generate relatively large 泄漏; true 空淬火油 in mixed relatively more gas; cooling gas 体(例如 nitrogen gas) pure degree high, its in has relatively more oxygen gas; relatively more 油缸油 mixed to true 空淬火油 in and other.