造纸机械中的滚筒表面,不仪光洁度须达到▽7,而且还要求良好的耐磨、抗腐蚀等性能,因而一般均选用不锈钢无缝管制造。但对于那些直径大于200毫米、长度超过2米的滚筒来说,因其数量少、规格多,而造价较高。我厂选用“粉313铁”粉末在碳钢管上喷涂的具有该粉末涂层制成的滚筒,其表面光洁度为▽7,硬度(HRC)为50,耐酸碱度为PH5,达到了使用要求。其喷涂工艺简述如下。 Paper machinery in the drum surface, not to finish to achieve ▽ 7, but also requires good wear resistance, corrosion resistance and other properties, which are generally made of stainless steel seamless pipe manufacturing. However, for those with diameters larger than 200 mm and lengths longer than 2 m, they are more expensive due to their smaller number, larger size and more. I choose the factory “powder 313 iron” powder sprayed on the carbon steel tube with the powder coating made of its surface finish ▽ 7, hardness (HRC) of 50, resistance to PH5, reached the use requirements. The spraying process is as follows.