Shanghai Daoqin Plastics Co., Ltd.

   injection molding machine temperature rise high causes:

  （1）油箱容积太 small, dispersion hot 面积不够, cooling plant/unit its amount small.  

  （2）按 fast speed degree selection 油泵容 amount amount 泵供油 system, in as has large separation more 余 流 amount in high pressure lower from 溢流阀溢回而发 hot.  

  （3） system in 卸荷回路出现 fault/failure or 因未设置卸荷回路, 停止工 as 时油泵不 can 卸荷, full amount in high pressure lower 溢流, generate loss 失而发 hot, temperature rise.  

  （4） system tube/pipe fine long, bending more, local pressure loss and pressure loss large.  

  （5）元 parts degree and assembly quality 差, versus for 运动间 machine scratch loss large.  

  （6）配 combined parts combined 间隙太 small, or use abrasion loss rear 导致间隙 large, inner, outer amount large, formed 容积失 large, 如泵 容积 efficiency reduce, temperature rise fast.
 
  （7） liquid pressure system as pressure adjustment ratio need high very more. has is 因密封 紧, or seals loss bad, increase large 而不 不调 high pressure can as.
 
  （8） gas and as ring temperature degree high, make temperature rise high.  

  （9） selection liquid viscosity 不当, viscosity large viscous property retardant force large, viscosity small 则泄漏 increase large, types 情况均 can formed hot temperature rise.  

   injection molding machine temperature rise high 危害 

  （1） make machine generate hot deformation, liquid pressure parts in hot 胀系数 different 运动部 parts its combined 间隙变 small 而卡死, 引起动 as 失灵, effect/influence liquid pressure system 传动精 degree, 导致部 parts as quality 变差.  

  （2） make viscosity reduce, increase, 泵 容积 efficiency and system efficiency significantly reduce. due to viscosity reduce, slip and other 移动部 parts film thin and by 切破, scratch retardant force increase large, abrasion loss add 剧.  

  （3） make seals deformation, accelerated aging 失效, reduce property can and use lifespan, formed 泄漏.
 
  （4） accelerated liquid oxidation 变质, 并析出沥青 material 质, reduce liquid pressure use lifespan. material retardant small and 缝隙式阀口, pressure 阀卡死而不 can as, metal tube/pipe long 而弯典, 甚至破裂 and other.  

  （5） make 油 空 gas separation pressure reduce, in solvent understanding gas 逸出, generate gas 穴, make liquid pressure system as property can reduce.  

   injection molding machine temperature rise high methods  

  （1） according to different negative requirements, 经常检查, adjustment 溢流阀 pressure, make to benefits.
 
  （2） combined selection liquid pressure 油, especially is liquid viscosity, in conditions 允许 情况 lower, amount using/adopting low viscosity decrease/reduce viscosity scratch loss 失.  

  （3） improvement parts lubricated conditions, decrease/reduce scratch loss 失, has reduce as negative 荷, decrease/reduce hot.

  （4） improve/increase liquid pressure parts and liquid pressure system assembly quality and 自身精 degree, control combined parts combined and improvement lubricated conditions. using/adopting friction coefficient small 密封材 material and 改进密封 structure, can can reduce liquid pressure 缸 启动 force,以 reduce machine scratch loss generate hot amount.
 
  （5） necessary increase cooling plant/unit