加大外部拘束会在一定程度上削弱随焊激冷防止热裂纹的效果。
Increase external restraint will reduce to some degree the effect of preventing hot cracking by trailing intense cooling.
如果蠕化处理程度和冷铁激冷能力无法形成球墨层者，使用效果较差。
If the compacted treatment degree and chill capacity of chiller are not enough to obtain fine spheroidal graphite layer, the service life of glass mold is short.
如果蠕化处理程度和冷铁激冷能力无法形成球墨层者，使用效果较差。
If the compacted treatment degree and chill capacity of chiller are not enough to obtain fine spheroidal graphite layer, the service life of glass mold is short.
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