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解决铝合金压铸表面失误的措施都哪些?

来源:http://www.jnhjgs.cn     发布时间:2020-03-06 14:24:26    点击:

  在铝合金压铸件的生产过程中,由于操作不当、选材不当等原因,铝合金压铸件会出现各种质量问题,包括网孔毛刺,该如何归咎责任?
  In the production process of aluminum alloy die casting, due to improper operation and material selection, various quality problems, including mesh burr, can be attributed?
  铝合金铸件的毛刺包括网痕、网纹和裂纹毛刺。铝合金压铸件的网络毛刺可能是由于金属的快速流动和前壁的冲刷引起的。可能是型腔Ra表面粗糙度过大;可能是beplay全站app安卓温差过大;可能是beplay全站app安卓材料不当或热处理工艺错误;可能是合金液浇注温度过高,beplay全站app安卓预热不够。它可能是由于结晶器型腔表面的裂纹、近内浇口区域的热传导集中、摩擦阻力大、热熔融金属的侵蚀性强、冷热变化剧烈、热量的产生、裂纹的形成等原因造成的。
山东铝合金压铸
  The burr of aluminum alloy casting includes net mark, net mark and crack burr. The network burr of aluminum alloy die casting may be caused by the rapid flow of metal and the erosion of front wall. It may be that the surface roughness of the cavity RA is too large; the temperature difference of the mold is too large; it may be that the mold material is improper or the heat treatment process is wrong; it may be that the pouring temperature of the alloy liquid is too high and the mold preheating is not enough. It may be caused by the cracks on the mold cavity surface, the concentration of heat conduction near the inner gate area, the high friction resistance, the strong erosion of the hot melt metal, the drastic changes of heat and cold, the generation of heat, the formation of cracks and other reasons.
  铝压铸件产生网眼毛刺的原因已查明,下一步是解决的办法。工作人员应正确设计浇注系统,尽量使用较小的注射速度,以满足良好的成型要求。提高型腔表面质量,降低Ra值;尽量降低合金液体的浇注温度;压铸前,对beplay全站app安卓进行充分的预热,使其达到工作温度范围。beplay全站app安卓材料选择正确,热处理工艺合理;镶件定期退火以减轻应力。
  The reason of mesh burr in aluminum die casting has been found out, and the next step is to solve it. The staff should design the pouring system correctly, and try to use a smaller injection speed to meet the good molding requirements. Improve the surface quality of the cavity, reduce the Ra value; reduce the pouring temperature of the alloy liquid as much as possible; preheat the die sufficiently before die casting to make it reach the working temperature range. The die material selection is correct and the heat treatment process is reasonable; the inserts are annealed regularly to reduce the stress.
  以上就是山东铝合金压铸对铝合金压铸表面网孔毛刺处理方式的详细介绍,想要了解更多请点击官网http://www.jnhjgs.cn
  The above is the detailed introduction of Shandong Aluminum alloy die casting to the burr treatment of mesh on the surface of aluminum alloy die casting. For more information, please click http://www.jnhjgs.cn。
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