首页> 外国专利> METHOD FOR PREVENTING STRESS CORROSION CRACKING CAUSED BY COLD WORKING IN ALLOY STEEL IRON INCLUDING STEEL IRON AND STAINLESS STEEL USING fs (FEMTOSECOND) REGION EXTRASHORT PULSE kW CLASS HIGH AVERAGE OUTPUT LASER

METHOD FOR PREVENTING STRESS CORROSION CRACKING CAUSED BY COLD WORKING IN ALLOY STEEL IRON INCLUDING STEEL IRON AND STAINLESS STEEL USING fs (FEMTOSECOND) REGION EXTRASHORT PULSE kW CLASS HIGH AVERAGE OUTPUT LASER

机译：利用fs（强磁）区域超前脉冲kW级高功率输出激光防止合金钢（包括钢铁和不锈钢）中的冷加工造成的应力腐蚀开裂的方法

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摘要

PPROBLEM TO BE SOLVED: To provide an inexpensive method for preventing stress corrosion cracking caused by cold working where an anxiety of damaging the other apparatuses by steel balls or slabs is not caused and limitation on applying conditions such as using environments is not hardly placed, and which permanently functions over a remarkably long period compared with the service life of ordinary nuclear reactor equipment. PSOLUTION: Regarding the method, in steel iron and alloy steel iron, using the irradiation impact of an fs region extrashort pulse kW class high average output laser, a tensile residual stress layer is removed, further, compressive residual stress is generated to remove a surface hardened layer in which the sensitivity of stress corrosion cracking is extremely high, and, in the removing process, without newly generating or introducing the hardened layer, the surface hardened layer in which a transition defect or the like are concentrated, and the sensitivity is high is removed, thus stress corrosion cracking caused by cold working is prevented. PCOPYRIGHT: (C)2006,JPO&NCIPI

机译：

要解决的问题：提供一种廉价的方法来防止由冷加工引起的应力腐蚀开裂，在这种情况下，不会引起钢球或平板损坏其他设备的焦虑，并且几乎不限制使用条件（例如使用环境）放置，并且与普通核反应堆设备的使用寿命相比，能在相当长的时间内永久发挥作用。

解决方案：关于该方法，在钢铁和合金钢中，利用fs区超短脉冲kW级高平均输出激光的照射冲击，去除拉伸残余应力层，进而产生压缩残余应力，从而去除应力腐蚀裂纹敏感性极高的表面硬化层，并且在去除过程中，不重新产生或引入硬化层，而将过渡缺陷等集中的表面硬化层去除，灵敏度高，消除了冷加工引起的应力腐蚀开裂。

版权：（C）2006，JPO＆NCIPI 展开▼

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公开/公告号JP2006061966A

专利类型
公开/公告日2006-03-09

原文格式PDF
申请/专利权人 JAPAN ATOM ENERGY RES INST;
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申请/专利号JP20040249853
发明设计人 MINEHARA EISUKE;NISHIMURA AKIHIKO;TSUKADA TAKASHI;
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申请日2004-08-30
分类号B23K26;B23K26/16;B23K103/02;
国家 JP
入库时间 2022-08-21 21:51:29

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