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温瑾林 《机械工人(热加工)》1989,(3):49-51
陶瓷棒火焰喷涂是50年代初由美国的 Narton公司为适应空间技术的发展而发明的,这项技术在1955年获得美国专利保护,其注册商标为 Rokido。以后在相当长的时间里,一直出 Norton 公司制 相似文献
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使用表面轮廓测量评定擦伤严重程度的方法,对不锈钢、工具钢及堆焊的铝青铜层在与不锈钢板材相摩擦时的擦伤严重程度进行了评定。结果表明堆焊的铝青铜层具有卓越的抗擦伤性能。 相似文献
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本文研究了电弧喷涂铝青铜涂层及界面的组织特征,并探讨了其结合机理。实践表明,这是一种新的低成本的自结合材料与工艺,涂层作为过渡层或工作层都有广阔的应用前景。 相似文献
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The adhesion of thermally sprayed coatings is an important subject for engineers applying thermal spray pro-cess.The single pendulum impact scratch test is the most popular method in the tribological inwestigation of modified sur-faces of materials. In this paper,the adhesion of thermally sprayed coatings has been investigated using this testmethod .The key of evaluation for thermally sprayed coatings is the sheer strength of coatings obtained in the test.Theresults show that the test method is reproducible ,reliable and easy to perform,and does not require expensive equip-ment.The procedure proposed in the test method for evaluating the adhesion of coatings is more reliable and realistic thanothers. 相似文献
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温瑾林 《机械工人(热加工)》1988,(6)
30多年来,高质量的WC-Co涂层几乎都是使用爆炸喷涂方法实现的,美国的联合碳化物公司至今独家垄断着这一技术,承揽着世界范围的喷涂加工业务(详见本刊1986年第3期)。80年代以来,一种新的热喷涂方法——超音速火焰喷涂的出现引起了人们的注意,其发明人把这种方法称为Jet Kote。用这种方法喷涂的WC-Co涂层己经达到甚至超过爆炸喷涂层的质量,开始与爆炸喷涂相抗衡。在进行 相似文献
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Based on the Almen method,the authors have modified this test method so that the results of the simple testcan be correlated to the absolute values of residual stress measured fy conventional methods such as X-ray diffraction ormechanical techniques.The technique utilizes changes in the strain of standardized test substrates, which is measured byBHP-700℃ temperature-compensated reststance strain gauges, as an indication of the level of residual stress in thesprayed coatings. Based on the concept that the sprayed coating on the surface of substrate with residual stresses acts aforce (N) and bending momeat (M) on the test piece,the calculating equation of residual stress in the coatings hasbeen proposed. The results of the test method showed that the technique is potentially reliable and accurate, althoughdeficiencies and many controversies are still exist. 相似文献
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本文综述了国外近些年来等离子切割技术的重大进展和在切割厚度、速度、质量、设备、安全防护以及自动化水平等方面的发展现状,并指出了国外发展动向。 相似文献