咨询热线:

0531-88771136

您的当前位置: 首页 > 新闻中心 > 正文

为什么铝合金压铸件会出现网状毛刺?

来源:http://www.jnhjgs.cn     发布时间:2020-08-10 16:41:06    点击:

  在生产山东铝合金压铸件的过程中,因为操作不当、选材不当等多种原因,铝合金压铸件会出现多种质量问题,其中就包括网状毛刺,这是怎么回事?
  In the production process of aluminum alloy castings, due to improper operation, improper material selection and other reasons, aluminum alloy die castings will have a variety of quality problems, including mesh burr. What is the matter?
  铝合金铸件出现的网状毛刺包括网状痕迹、网状花纹和龟裂毛刺等情况,主要表现就是压铸件表面形成的网状凸起痕迹和金属刺。铝合金压铸件出现网状毛刺,可能是因为金属流速过快和正面冲刷型壁;可能是beplay全站app安卓型腔表面粗糙度Ra过大;可能是beplay全站app安卓冷热温差太大;可能是beplay全站app安卓材料不当或热处理工艺失误;可能是合金液浇注温度偏高,beplay全站app安卓预热不充分;可能是beplay全站app安卓型腔表面龟裂造成痕迹,内浇口区域附近热传导集中,摩擦阻力大,受到热熔金属的冲蚀较强,冷热交变剧烈,产生热烈,形成龟裂。
  The reticular burr of aluminum alloy casting includes reticular trace, reticular pattern and cracking burr. The main manifestation is the network convex trace and metal thorn formed on the surface of die casting part. The mesh burr of aluminum alloy die casting parts may be caused by too fast metal flow rate and positive erosion of the mold wall; the surface roughness Ra of the mold cavity is too large; the temperature difference between the cold and hot parts of the mold is too large; the material of the die is improper or the heat treatment process is wrong; the casting temperature of the alloy liquid is too high, and the mold preheating is not sufficient; the surface cracking of the mold cavity may cause traces The heat conduction near the gate area is concentrated, and the friction resistance is large. The erosion of hot-melt metal is strong, and the alternation of cold and hot is intense, resulting in hot cracking.
                山东铝合金压铸
  既然已经找到了导致铝合金压铸件出现网状毛刺的原因,接下来就是解决办法。工作人员需要正确设计浇注系统,以满足成型良好为前提,尽量用较小的压射速度;提高beplay全站app安卓型腔表面质量,降低Ra数值;尽量降低合金液的浇注温度;压铸前对beplay全站app安卓进行充分预热,使之达到工作温度范围;正确选用beplay全站app安卓材料与合理的热处理工艺;镶块定期退火,消除应力。
  Now that the cause of mesh burr in aluminum alloy die castings has been found, the next solution is to solve the problem. It is necessary for the staff to design the gating system correctly, to meet the requirements of good forming, to use a smaller injection speed as far as possible; to improve the surface quality of the mold cavity and reduce the Ra value; to reduce the pouring temperature of the alloy liquid as far as possible; to fully preheat the mold before die casting to make it reach the working temperature range; to select the mold material correctly and to adopt the reasonable heat treatment process; to anneal the insert regularly, Stress relief.
  本文由山东铝合金压铸整理提供,希望对大家有所帮助,想要了解更多内容欢迎点击我们的http://www.jnhjgs.cn网站。
  This paper is provided by Shandong Aluminum Alloy Die Casting finishing, hope to help you, want to know more content, welcome to click our http://www.jnhjgs.cn Website.
联系我们 contact

山东济南beplay全站app安卓_铝合金压铸厂-济南宏捷beplay全站app安卓有限公司

电话1:13173017488

电话2:18615459955

传真:0531-88771136

邮箱:hlm369@126.com

地址:山东省济南市大桥镇大王村北跨商务中心后三层白楼

山东济南beplay全站app安卓_铝合金压铸厂-济南宏捷beplay全站app安卓有限公司 手机: 13173017488 咨询热线: 0531-88771136 咨询热线:18615459955    邮箱:hlm369@126.com

公司地址: 山东省济南市大桥镇大王村北跨商务中心后三层白楼