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365体育注册失效的原因都有哪些?

来源:    发布时间:2020-04-06 15:17:50    点击:

1.模具热疲劳裂纹失效的压铸生产中,模具反复受到热成形面及其内部变形的冷却作用,相互之间反复出现循环热应力,导致结构损伤和回弹损失,导致微裂纹的出现,并继续扩展,一旦裂纹扩展,流体底辟和熔融金属,反复的机械应力加速裂纹的扩展365体育导航。因此,一方面,在压铸开始时,模具必须充分预热365体育开户。此外,在压铸生产过程中,模具必须保持在一定的工作温度范围内,以避免早期开裂失效365体育导航。同时,要保证模具在生产制造前不发生内因365体育官网app下载。由于实际生产中,模具失效主要是热疲劳开裂失效365体育开户。
  1. In the die casting production of die-casting with thermal fatigue crack failure, the die is repeatedly cooled by the hot forming surface and its internal deformation, and the cyclic thermal stress occurs between them repeatedly, resulting in structural damage and rebound loss, resulting in the appearance of microcracks, and continuing to expand. Once the cracks expand, the repeated mechanical stress accelerates the crack expansion once the fluid diapir and molten metal. Therefore, on the one hand, at the beginning of die casting, the die must be fully preheated. In addition, in the process of die casting, the die must be kept in a certain range of working temperature to avoid early cracking failure. At the same time, it is necessary to ensure that the internal cause of the die does not occur before the production and manufacturing. In actual production, the main failure of the die is thermal fatigue cracking.
  2.断裂故障注入力量的作用下,模具将在裂纹更薄弱的地方,特别是模具成形表面的标志或者电加工痕迹不抛光,或将成为个裂纹形状的角落,当存在脆性相或颗粒粗,容易骨折365体育导航。然而,在脆性断裂过程中,裂纹扩展非常快,这对模具的失效是非常危险的365体育官网app下载。为此,一方面,模具表面所有的划痕、电加工痕迹都必须进行抛光,即使是在浇注系统中,也必须进行抛光365体育开户。此外,所使用的模具材料要求具有高强度、良好的塑性、良好的冲击韧性和良好的断裂韧性365体育导航。
365体育注册
  2. Under the action of fracture fault injection force, the mold will be in the weakest place of the crack, especially the mark of the mold forming surface or the mark of electric machining is not polished, or it will become the corner of the first crack shape, when there is brittle phase or Particle thick, it is easy to fracture. However, in the process of brittle fracture, the crack growth is very fast, which is very dangerous to die failure. For this reason, on the one hand, all scratches and machining marks on the mold surface must be polished, even in the pouring system. In addition, the die material used should have high strength, good plasticity, good impact toughness and good fracture toughness.
  3.熔炼失效之前已经提到过,常用的压铸合金有锌合金、铝合金、镁合金和铜合金,还有纯铝压铸,锌、铝、镁是比较活跃的金属元素,它们与模具材料有很好的亲和力,尤其是铝容易咬模365体育官网app下载。当模具硬度较高时,耐腐蚀性较好,如果模具表面较软,则耐腐蚀性较差365体育开户。然而,在实际生产中,模具的腐蚀只是局部的部分,直接腐蚀的部分是浇口(芯、腔),容易腐蚀,而软件的硬度则容易附着铝合金.
  3. It has been mentioned before smelting failure that common die-casting alloys include zinc alloy, aluminum alloy, magnesium alloy and copper alloy, and pure aluminum die-casting. Zinc, aluminum and magnesium are relatively active metal elements, which have good affinity with mold materials, especially aluminum is easy to bite. When the hardness of the mould is high, the corrosion resistance is good. If the surface of the mould is soft, the corrosion resistance is poor. However, in the actual production, the mold corrosion is only a part of the direct corrosion is the gate (core, cavity), easy to corrosion, and the hardness of the software is easy to attach aluminum alloy
  以上就是365体育注册对压铸失效的原因的详细介绍,想要了解更多请点击官网http://xasogal.com
  The above is a detailed introduction to the causes of die casting failure of Shandong Aluminum alloy die casting. For more information, please click http://xasogal.com
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