The crucial cause of inner die crack is predicted and found after the simulation of the test process.
根据对测试过程的模拟预测找到了引起芯片断裂的原因。
The causes of crack for cold-working die are analyzed by checking machining technique and observing the microscopic structure, the technical measures to prevent cracks are put forwarded in the paper.
通过对弯曲件冷冲模各加工工艺和金相显微组织的分析，分析了冷冲模产生裂纹的原因，并提出了防止裂纹产生的工艺措施。
The experiment shows that fusion welding reinforcement could proceed on the surface with crack of the die after crack arresting.
脉冲放电止裂后，可对带有裂纹的表面进行强化处理。
The space crack arresting in metal die has been conducted on a new super-density pulse current generator model ZL-2 designed by author.
自主设计了改进型ZL - 2超强脉冲电流发生装置，采用它实现了金属模具试件中裂纹的电磁热止裂。
This paper advanced a study method that can observe plastic deformation behavior of surface layer of die cavity by showing austenite grain, size, crack morphology and propagation mode.
提出了通过显示奥氏体实际晶粒度、裂纹形貌和扩展方式来分析热锻模具型腔表层塑性变形行为的试验方法。
The crack appears at the edge angle due to stress concentration caused by alternating load, which finally leads to the fissuring of die plate.
凹模在使用过程中，由于交变载荷的作用，使碳化物的棱角处应力集中出现裂纹，最终导致凹模开裂。
It is indicated the said crack is due to too small shrinkage ratio of the compacting die.
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。
How to repair the cold die with quenching crack is badly needed in industrial productions.
如何修复已出现淬火裂纹的模具，是工业生产中急需解决的问题。
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。
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。
The crack arresting is accomplished using electromagnetic heating by a pulse current discharge through the inside and outside of the die.
如何产生高强度脉冲电流是应用电磁热效应遏制金属裂纹扩展的一个关键问题。
In this paper, the failure of hot-work valve die is analysed with SEM, optical microscope and hardometer. The crack mechanism is explained and some methods are presented to prolong the die-durability.
本文运用电子扫描、金相分析、硬度测量等方法对气门阀热镦模的早裂进行了失效分析，探讨了模具的失效机理，提出了改善模具质量、提高模具使用寿命的途径。
Influence of Die Casting Process on Hot-crack and its formation mechanism of AM60B alloy are discussed.
分析了AM 60 B合金热裂纹形成的机制，讨论了压铸工艺对AM 60 B合金热裂纹的影响。
Low alloy cold die steel belongs to high carbon steel, so the quenching crack is easy to appear when it is hardened.
低合金冷作模具钢多属于高碳钢，淬火中易出现淬火裂纹。
Abstract: Through hardness testing, metallographic microscope analysis, and other means, the origination of crack failure of the aluminum alloy die casting die was analyzed.
摘要：通过硬度测试、金相组织观察，研究分析了铝合金压铸模具发生早期龟裂失效的原因。
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.
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.
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。
应用推荐