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如何彻底避免铝合金压铸失误的发生呢?

来源:    发布时间:2020-03-24 16:10:25    点击:

目前压铸广泛应用于许多行业和领域,特别是汽车、航天等行业的规模化生产,已成为一个非常重要的组成部分。那么铝合金压铸有哪些缺陷呢?我们怎样才能彻底解决这些问题?
  At present, die casting is widely used in many industries and fields, especially in large-scale production of automobile, aerospace and other industries, which has become a very important part. So what are the defects of aluminum alloy die casting? How can we completely solve these problems?
  1、气孔问题。
  1. Porosity problem.
  气孔率是指压铸件或表面上不同尺寸的孔洞,这些孔洞会导致压铸件的硬度,影响压铸件表面的外观。我们可以选择合适的脱模剂来处理毛孔,调整工艺,适当降低低速,确认脱模剂喷淋是否过多来处理毛孔问题。
  Porosity refers to the holes with different sizes on the die casting or surface, which will lead to the hardness of the die casting and affect the appearance of the die casting surface. We can choose the appropriate release agent to deal with the pores, adjust the process, reduce the low speed appropriately, and confirm whether the release agent spray too much to deal with the pores.
山东铝合金压铸
  2. 杂质
  2. impurity
  铝合金压铸的杂质问题主要由铝、硅和大量的铁、锰、铬化合物颗粒在一定温度下,和氧化的一部分,我们可以严格控制铝锭的组成、冶炼炉进行常规炉床清洁,定期渣和其他方法来解决这个问题。
  The impurity problem of aluminum alloy die casting mainly consists of aluminum, silicon and a large number of iron, manganese and chromium compound particles at a certain temperature, and a part of oxidation. We can strictly control the composition of aluminum ingot, clean the smelting furnace for conventional furnace bed, regularly slag and other methods to solve this problem.
  三、缩孔问题
  3、 Shrinkage problem
  缩孔是指缩孔形状不规则的小洞,内壁粗糙的现象。壁厚过大,容易导致铸件内部冷却和凝固速度慢,铸件厚度不均匀,容易产生缩孔。可以通过减少缩孔所在区域的壁厚,通过优化铸件和beplay全站app安卓结构来改变加工区域,增加铸件预制孔的深度,增加压力来增强组织的致密化来消除。
  Shrinkage refers to the phenomenon of small holes with irregular shape and rough inner wall. If the wall thickness is too large, it will lead to slow cooling and solidification speed inside the casting, uneven thickness of the casting and easy to produce shrinkage cavity. It can be eliminated by reducing the wall thickness of the area where the shrinkage cavity is located, changing the processing area by optimizing the casting and mold structure, increasing the depth of the casting preformed hole, and increasing the pressure to enhance the densification of the structure.
  裂缝问题
  Crack problem
  裂纹是指铝合金压铸件基体在外力作用下发生破坏,产生细长的缝隙、线状或其它线状,并有向外扩展的趋势。通过正确控制合金成分,加入冷却水,改变铝合金压铸件的结构,改变或增加弹射位置,可以解决这一问题。
  Crack means that the matrix of aluminum alloy die-casting is damaged under the action of external force, resulting in long and thin gap, linear or other linear, and has the trend of outward expansion. This problem can be solved by properly controlling the alloy composition, adding cooling water, changing the structure of aluminum alloy die casting, changing or increasing the ejection position.
  第五,压力问题
  Fifth, stress
  铸件表面出现线性应变痕或整体表面应变,金属液会附着在beplay全站app安卓表面,铸件表面会出现材料短缺,出现应变问题。我们可以修复beplay全站app安卓表面损伤,修改坡度,提高beplay全站app安卓表面光洁度,调整顶杆,使顶进力平衡,拉紧beplay全站app安卓,调整铝合金含铁量,调整冷却时间等方法来处理应变问题。
  There are linear strain marks or overall surface strain on the surface of the casting, the liquid metal will adhere to the surface of the mold, and the surface of the casting will have material shortage and strain problems. We can repair the surface damage of the die, modify the slope, improve the surface finish of the die, adjust the ejector pin, balance the jacking force, tension the die, adjust the iron content of the aluminum alloy, adjust the cooling time and other methods to deal with the strain problem.
  以上就是对山东铝合金压铸缺陷的产生的因素以及处理措施的详细介绍,想要了解更多请点击官网http://www.jnhjgs.cn
  The above is a detailed introduction to the causes and treatment measures of die casting defects of Shandong Aluminum alloy. For more information, please click http://www.jnhjgs.cn
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