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上海造纸机械厂生产的10吨施胶纸机,该机烘缸材料为铸铁HT20-40,表面镀铬。其外形尺寸为:直径1250毫米、长2000毫米、壁厚25毫米。工作条件是长期处在含有硝酸钠和氯化钾等溶液的纸张相接触中运转,故镀铬层表面容易腐蚀,两、三年后就需磨加工一次,寿命较短。由于滚筒体积庞大,用一般电镀工艺很难保证质量。为此,该厂采用了冷喷焊新工艺,既提
Shanghai Paper Machinery Factory production of 10 tons sizing paper machine, the machine dryer material is cast iron HT20-40, the surface chrome. Its dimensions are: diameter 1250 mm, length 2000 mm, wall thickness 25 mm. Working conditions are long-term in the paper containing sodium nitrate and potassium chloride solution in contact with the operation, so the surface of chrome layer easily corroded, two or three years after the need to mill processing time, shorter life expectancy. Due to the large size of the drum, it is difficult to guarantee the quality with the general electroplating process. To this end, the plant adopted a new cold spray welding process, both mention