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一、前言目前,在石油部门,对外涂层包敷钢管金属表面的处理多采用下列几种方法:①机械处理,即用旋转的圆盘钢刷除去钢管金属表面的氧化物和其它污物,其效果不佳,工艺陈旧,且装置结构庞大;②化学处理,即通过化学反应除去管子金属表面的氧化物,该法技术效果和工艺性差,不便于自动化作业;③干喷砂处理,其使用效果不佳;④抛丸处理,它是用高速运动的钢丸(或铁丸)流撞击挤压金属表面疏松的氧化物,达到处理目的,且金属表面受到强化,机械性能和耐腐蚀能力提高。但这种
I. Introduction At present, in the petroleum sector, the following methods are mostly used for the treatment of the metal surface of the coated steel pipe by the external coating: ① Mechanical treatment, that is, removing the oxides and other contaminants on the surface of the steel pipe by a rotating disc steel brush, Its effect is not good, the process is outdated, and the device has a huge structure; ② chemical treatment, that is removed by chemical reaction tube metal surface oxide, the method of technical effects and technology is poor, inconvenient for automated operations; ③ dry sandblasting, The effect is not good; ④ Shotblast treatment, which is the use of high-speed movement of steel balls (or iron pill) flow impact extrusion of loose metal oxide surface to achieve the purpose of treatment, and the metal surface is strengthened, improved mechanical properties and corrosion resistance . But this