山东济南注塑模具制造加工

     

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造成注塑模具焦化的原因有哪些?

来源:http://www.maramnaga.com 日期:2019-07-30 发布人:admin 浏览次数:
在注塑模具加工的时候难免会让注塑产品变色焦化出现黑点等情况,造成该问题的一般原因是塑料或添加的紫外线吸收剂,防静电剂等在料筒内过热分解,或在料筒内停留时间过长而分解,焦化,再随同熔料注入型腔形成。下面山东模具制造厂家给大家详细的介绍一下,希望对大家有所帮助!
In the process of injection moulding, it is unavoidable to cause discoloration and coking of injection moulding products, such as black spots, etc. The common cause of this problem is that plastic or added ultraviolet absorbent, antistatic agent, etc. decompose in the barrel by overheating, or stay in the barrel for too long to decompose, coking, and then form with the injection cavity of melt. Next Shandong mold manufacturers to give you a detailed introduction, I hope to help you!
一,机台方面:
Firstly, on the machine side:
1.由于加热控制系统失控,导致料筒过热造成分解变黑。
1. Because the heating control system runs out of control, the cylinder overheating causes decomposition and blackening.
2.由于螺杆或料筒的缺陷使熔料卡入而囤积,经受长时间固定加热造成分解,应检查过胶头套件是否磨损或里面是否有金属异物。
2. Because of the defect of screw or barrel, the melt is trapped and stored, and decomposed by long time fixed heating, it should be checked whether the rubber head sleeve is worn or whether there are metal foreign bodies in it.
3.某些塑料如ABS在料筒内受到高热而交联焦化,在几乎维持原来颗粒形状情形下,难以熔融,被螺杆压破碎后夹带进入制件。
3. Some plastics, such as ABS, are heated and cross-linked in the barrel. It is difficult to melt when the original particle shape is almost maintained. They are crushed by screw and then entrained into the workpiece.
济南注塑模具加工
二,模具方面:
Second, in the aspect of die and mould:
1.模具排气不顺,易烧焦,或浇注系统的尺寸过小,剪切过于厉害造成焦化。
1. Mold exhaust is not smooth, easy to scorch, or the size of the casting system is too small, too severe shear causes coking.
2.模内有不适当的油类润滑剂,脱模剂。
2. There are inappropriate oil lubricants and release agents in the mould.
三,注塑模具塑料方面:塑料挥发物过多,湿度过大,杂质过多,再生料过多,受污染。
Third, the injection mould plastics: too much volatile plastics, too much humidity, too many impurities, too much recycled materials, polluted.
四,加工方面:
4. Processing:
1.压力过大,速度过高,背压过大,转速过快都会使料温分解。
1. Excessive pressure, excessive speed, excessive back pressure and excessive speed will decompose the material temperature.
2.应定期清洁料筒,清除比塑料耐性还差的添加剂。
2. The barrel should be cleaned regularly to remove additives worse than plastic resistance.
以上的内容就是由山东模具制造厂家为大家介绍的相关内容了,如果您有更多的意见和想法,欢迎在线留言:http://www.maramnaga.com我们后续会有专人与您对接!
If you have more comments and ideas, please leave a message online: http://www.maramnaga.com, we will have someone to connect with you later!

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