Quenching crack propagation characteristics of the organizations on both sides without decarburization phenomenon significant difference between crack and materials and forging cracks.
淬火裂纹的组织特征是裂纹两侧无脱碳现象，明显区别与锻造裂纹和材料裂纹。
Causes the steel to produce the hot brittleness, reduces the steel the ductility and the toughness, when forging and rolling crack.
使钢产生热脆性，降低钢的延展性和韧性，在锻造和轧制时形成裂纹。
Improper forging process will also appear large grain or uneven, hardening crack phenomenon, forging cost is higher than the casting flange.
锻造工艺不当也会出现晶粒大或不均，硬化裂纹现象，锻造成本高于铸造法兰。
Forging defects of mould cavity non-saturate, crack, pucker and shearing edge avulsion, etc. on the astrictive clamps and operating scissors are studied by means of appearance and metallography.
采用外观和金相方法，对止血钳和手术剪锻坯出现的型腔填充不满、裂纹、重皮和切边撕裂等缺陷进行分析。
Production practice proof that the forging process can be used to control formation of inclusion crack effectively and improve internal quality greatly.
生产实践证明，采用该工艺可有效控制夹杂性裂纹的形成，提高锻件内部质量。
The failure modes of the combination valve hot forging die in normal working condition are wear, collapse or cold hot fatigue crack.
气门锻模正常失效方式为磨损、压塌和冷热疲劳裂纹。
In the paper, the hot crack for the forging die made by methods of squeeze casting is analyzed, how to reduce the hot crack is also given out.
从生产实际出发，分析了锻模液态模锻成形过程中热裂纹形成的主要原因，提出了降低锻模热裂纹的几点措。
Crack is the main flaw happening in steel forging deformation.
裂纹是钢锻件锻压加工中常见的主要缺陷。
Crack is the main flaw happening in steel forging deformation.
裂纹是钢锻件锻压加工中常见的主要缺陷。
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