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山东beplay全站app安卓产品开裂的原因有哪些?

来源:http://www.jnhjgs.cn     发布时间:2019-07-12 10:01:10    点击:

  裂纹可以理解为丝状裂纹、微裂纹、顶部白色裂纹、裂纹和环形件粘模、流道钻具beplay全站app安卓等引起的缺陷。根据开裂时间、脱模开裂及应用情况
  Cracks can be understood as defects caused by filamentary cracks, microcracks, white cracks at the top, cracks and viscous dies of annular parts, and runner drill tools. According to cracking time, demoulding cracking and Application
  裂化(也称为裂化)。前者发生在脱模过程中,后者发生在测试、储存和应用中(微裂纹与溶剂蒸汽接触等)。因素造成开裂
  Cracking (also known as cracking). The former occurs in the demoulding process, while the latter occurs in the testing, storage and application (microcracks in contact with solvent vapor, etc.). Cracking caused by factors
  如下。
  As follows.
  (1)beplay全站app安卓
  (1) Mould
  1. 在制品的薄壁部位选择了顶出位置,产品局部变形较大,产生应力增白或应力开裂现象。
  1. In the thin-walled part of the product, the ejection position is selected. The local deformation of the product is large, resulting in the phenomenon of stress whitening or stress cracking.
  2. 内应力是由喷射器的倾斜或不平衡产生的。
  2. The internal stress is caused by the inclination or imbalance of the ejector.
  山东beplay全站app安卓
  Shandong Mould
  (2)技术
  (2) Technology
  1. beplay全站app安卓温度过低或过高。beplay全站app安卓温度过低,塑料过早冷却,熔接不良,易开裂。beplay全站app安卓温度过高,当负压过大时,塑料不易凝固而出beplay全站app安卓表面。
山东beplay全站app安卓
  1. Mold temperature is too low or too high. Mold temperature is too low, plastic cooling too early, poor welding, easy to crack. Mold temperature is too high, when the negative pressure is too large, the plastic is not easy to solidify and come out of the surface of the mould.
  2. 注射压力太高,速度太快。在压力过大、速度过大的情况下,beplay全站app安卓内填充的塑料过多,内应力过大。
  2. The injection pressure is too high and the injection speed is too fast. When the pressure is too high and the speed is too high, the plastic filled in the mould is too much and the internal stress is too large.
  3.压力保持时间长。beplay全站app安卓内零件冷却时间过长,冷塑料粘在芯上,在喷射时产生负压。
  3. Pressure is maintained for a long time. The cooling time of the parts in the die is too long, and the cold plastic sticks to the core, which produces negative pressure during injection.
  4. 嵌体与塑性收缩率不一致,导致开裂。
  4. Inlay and plastic shrinkage are inconsistent, leading to cracking.
  5. beplay全站app安卓开得太快。
  5. The mould is going too fast.
  山东beplay全站app安卓
  Shandong Mould
  (3)原材料
  (3) Raw materials
  1. 润滑剂不当、脱模剂或用量过大。
  1. improper lubricant, release agent or excessive dosage.
  2. 品牌、等级不适用。
  2. Brand and grade are not applicable.
  (4)产品设计
  (4) Product design
  产品设计不合理,导致局部应力集中或薄弱部位较多开裂
  Unreasonable product design leads to local stress concentration or more cracks in weak parts
  例如,设计太薄或太空心。
  For example, design is too thin or space heart.
  以上是山东beplay全站app安卓小编为大家整理的相关内容,想要了解更多内容,欢迎访问网站:http://www.jnhjgs.cn
  The above is the related content of Shandong Mould Editor. For more information, please visit the website: http://www.jnhjgs.cn.
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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

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