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网站海南七星彩 > 海南七星彩 > 造成热流道漏料的主要原因都有哪些?

造成热流道漏料的主要原因都有哪些?

发布日期:2020-01-09 内容来源于:http://amlaksaudi.com/

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 通常,为了保证系统的密封(热嘴和分流板),必须将系统加热到操作温度,以使其产生的力足以抵消注塑压力,从而防止注塑压力将两个部件顶开。一般,缺乏经验的操作者往往不会等待系统达到操作温度,更糟糕的是,他们甚至可能忘记打开加热系统。这样,带有冷间隙的热流道在未达到其操作温度前,其表面所产生的压力也就无法防止漏料。 


      另外,在加热过度的情况下也可能发生漏料现象。由于带钢性边缘的热嘴对热膨胀的适应性差,当系统被过度加热后,一旦再降低为操作温度时,由于钢性变形的影响,其产生的密封压力无法防止泄漏。这种情况下,除了漏料会造成热流道系统损坏外,还会因为压力过大而对热嘴造成不可恢复的损坏,从而需要更换热嘴。 


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相关标签: 热流道

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