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1. 发明申请

US20010023888A1 Welding method for welded members subjected to fluoride passivation treatment, fluoride passivation retreatment method, and welded parts 失效
标题翻译：氟化物钝化处理焊接件的焊接方法，氟化物钝化再处理方法和焊接部件
公开(公告)号：US20010023888A1
公开(公告)日：2001-09-27
申请号：US09748883
申请日：2000-12-27
申请人： Tadahiro OHMI and KABUSHIKI KAISHA ULTRACLEAN TECHNOLOGY RESEARCH INSTITUTE
发明人： Tadahiro Ohmi , Takahisa Nitta , Yasuyuki Shirai , Osamu Nakamura
IPC分类号： B23K028/00 , B23K005/213 , B23K031/02 , B23K001/19 , B23K035/24 , C23C008/10 , B23K035/36 , C21D009/08
CPC分类号： B23K35/383 , B23K1/20 , Y10T428/12535 , Y10T428/12979 , Y10T428/31678
摘要： The present invention provides a welding method for materials to be welded which are subjected to fluoride passivation treatment, and a fluoride passivation retreatment method, wherein, when fluoride passivation retreatment was conducted after welding, there is no generation of particles or dust, and superior resistance is provided to fluorine system gases. In the present invention, when materials to be welded comprising stainless steel subjected to fluoride passivation treatment are welded, hydrogen is added to the gas (the back shield gas) flowing through the materials to be welded. Furthermore, in the welding method for materials to be welded which are subjected to fluoride passivation treatment in accordance with the present invention, the thickness of the fluoride passivated film in a predetermined range from the butt end surfaces of the materials to be welded, comprising stainless steel subjected to a fluoride passivation treatment, is set to 10 nm or less, and welding is conducted. Furthermore, in the fluoride passivation retreatment method in accordance with the present invention, after conducting the welding method described above, at least the welded parts are heated, and a gas containing fluorine gas is caused to flow in the interior part.
摘要翻译：本发明提供一种待进行氟化物钝化处理的待焊接材料的焊接方法，以及氟化物钝化再处理方法，其中，在焊接后进行氟化物钝化再处理时，不产生颗粒或灰尘，且具有优异的电阻被提供给氟系气体。在本发明中，当焊接包含不锈钢的待焊接材料进行氟化物钝化处理时，向流过待焊接材料的气体（背面保护气体）添加氢。此外，在根据本发明的被氟化物钝化处理的待焊接材料的焊接方法中，氟化钝化膜的厚度在待焊接材料的对接端面的预定范围内，包括不锈钢进行氟化物钝化处理的钢被设定为10nm以下，进行焊接。此外，在本发明的氟化物钝化再处理方法中，在进行了上述的焊接方法之后，至少加热了焊接部，并且使含有氟气的气体在内部流动。

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