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井盖模具性能需注意哪几点
发布人:管理员   发布时间:2020-12-25

井盖模具是生产水泥防盗井盖的专用模具 ,采用塑料材料生产时,材料不能缺少的性能有以下几点:
Well cover mould is a special mould for producing cement anti-theft well cover. When plastic materials are used for production, the following properties are indispensable:

1.高耐磨性如改模具不耐磨,很容易使行腔受到过度的磨损。
1. High wear resistance. If the mold is not wear-resistant, it is easy to make the chamber subject to excessive wear.

2.高耐腐蚀性很多塑料的添加剂,如阻燃剂等,甚至容量本身的化学作用都会腐蚀模具行腔。
2. High corrosion resistance many plastic additives, such as flame retardants, and even the chemical action of the capacity itself will corrode the mold cavity.

3.良好的导热性在注塑成型时,良好的模温控制对塑料件质量影响较大,特别是在加工半结晶性热塑料件时更显重要。
3. Good thermal conductivity in injection molding, good mold temperature control has a great impact on the quality of plastic parts, especially in the processing of semi crystalline thermoplastic parts.

    

4.良好的尺寸稳定性注塑模在成型操作时,模具行腔的温度要达到300度以上,温差这么大,易使行腔结构发生微观变化,从而造成模具尺寸变化,使得塑料件尺寸不稳定。
4. Good dimensional stability in the molding operation of injection mold, the temperature of the mold cavity should reach more than 300 degrees, such a large temperature difference is easy to cause micro changes in the structure of the cavity, resulting in mold size changes, making the size of plastic parts unstable.

5.抛光性能好模具行腔内壁要求很高,粗糙度非常小,以适应塑料表面良好光泽度的要求,对此,对模腔一般要进行抛光处理,表面越亮越好,为此,要求模具材料易于抛光,所以选用的材料不应该有杂质和气孔等缺陷。
5. Good polishing performance. The inner wall of the mould row cavity requires high requirements, and the roughness is very small, so as to meet the requirements of good gloss of the plastic surface. Therefore, the mold cavity should be polished generally, and the brighter the surface is, the better. Therefore, the mold material is required to be easy to polish, so the selected material should not have defects such as impurities and pores.