由于收缩造成的面板张力不断累积，导致裂纹。
When the tension in the top (created by shrinkage) has built up, it eventually releases - and it releases in the form of a crack.
指出裂纹产生的外因是钢水的静压力、热应力、组织收缩应力和其它外力的作用。
It is pointed out that the external causes of cracks originating are effected by static pressure, thermal stress and structural shrinking stress and etc.
收缩小，有方向性，易发生熔接不良，变形、翘曲、缩孔、裂纹及应力集中，树脂填料分布不匀。
Shrinkage small, directional, high incidence of adverse Weld, deformation, warping, shrinkage cracks and stress concentration, resin filler uneven.
指出，拉丝模内孔之所以产生裂纹，是由于压模收缩比太小的原因。
It is indicated the said crack is due to too small shrinkage ratio of the compacting die.
并用压坯单重递减法试验证实，当将压模收缩比增加到1 2 2以上时，可以保证压坯内孔不出现裂纹。
The test of single compact weight decrease proved that when the shrinkage ratio of the compacting die is increased to over 1.22, there is no more crack initiated in the compact inner hole.
研究了具有高流动性的流态混凝土的配比、流动性、早期裂纹扩展、强度、收缩、碳化和抗冻融性，这种混凝土无论在成本上还是性能上都是非常可行的。
Mixture proportions, flowability, crack propagation at early ages, strength, shrinkage, carbonation and the freezing and thawing resistance of flowing concrete with high flowability were investigated.
电线经受热收缩试验，收缩率应不超过2%。电线表面应不出现裂纹。
Cable shall endure heat shrinkable test; shrinkable ratio shall be no more than 2%; no cracks appear on the surface of cable.
铸件冷却收缩时，小的裂纹源进一步扩展形成裂纹缺陷。
On cooling and contraction, the small cracks further expand into hot tearing defect.
研究表明：轮毂的工艺缺陷主要为缩孔、缩松以及凝固过程中收缩导致的裂纹缺陷，主要分布在轮辋、辐条交汇的热节部位。
The results indicate that the casting defects are mainly shrinkage porosity and cracks caused by solidification shrink, which mainly presents in the hot spot between the spoke and the rim.
对轴承座内孔进行堆焊 ，将大表面分割 成小表面 ，减少了喷涂层收缩时形 成的裂纹 ，提高了喷涂层与基体的结合强度。
Bead inside bore of bearing, the large surface is divided into several small ones, the number of flaws are decreased and the bond strength of spraying layer and substrate is strengthened.
对轴承座内孔进行堆焊 ，将大表面分割 成小表面 ，减少了喷涂层收缩时形 成的裂纹 ，提高了喷涂层与基体的结合强度。
Bead inside bore of bearing, the large surface is divided into several small ones, the number of flaws are decreased and the bond strength of spraying layer and substrate is strengthened.
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