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钎焊是高温合金零部件修理的重要工艺。采用科学合理的钎焊前处理技术,特别是清洗技术,是获得高质量钎焊接头的前提和保证。本文针对高温合金钎焊的特点和对零件表面清洁度的要求,综述了高温合金钎焊前处理技术的研究现状,着重介绍了化学清洗、盐浴清洗、氢还原处理、真空清洗、高压水清洗、激光清洗、热离子清洗和机械打磨处理等钎焊前处理技术,展望了高温合金钎焊前处理技术的研究方向。
Brazing is an important process for the repair of high temperature alloy parts. The use of scientific and reasonable brazing pre-treatment technology, especially cleaning technology, is to obtain high-quality brazed joints premise and guarantee. In this paper, according to the characteristics of brazing of high temperature alloys and the requirements on the surface cleanliness of parts, the research status of brazing pretreatment of superalloys is reviewed. Chemical cleaning, salt bath cleaning, hydrogen reduction treatment, vacuum cleaning, high pressure water cleaning , Laser cleaning, thermal ion cleaning and mechanical polishing and other brazing pre-treatment technology, prospects of high-temperature alloy brazing pre-treatment technology research.