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把铁砂浆或粗砂浆与高压水射流一起,经特殊设计的喷嘴喷射到金属表面上,从而清除金属表面上的氧化物,这是一种物理除鳞方法。此项新技术与化学除鳞方法相比,具有除鳞速度快,设备小型化,水和喷浆可循环使用,除鳞效果好,无公害等特点。除鳞是依靠高能量“水锤”的冲击应力将氧化物剥落,加大矿浆比重和高压水压力可提高打击应力和磨削应力。钢和不锈钢等硬金属喷射角β45°～50°,而铜、铝等合金β35°～40°。每个喷嘴除鳞宽度为80～90mm,靶距一般控制在500～550mm,高压水流量与矿浆流量比为2:1除鳞效果最好。喷射机组类型很多。喷浆除鳞新技术将取代现有冶金工厂的酸洗碱洗技术。
The iron mortar or coarse mortar with high-pressure water jet together with a specially designed nozzle is sprayed onto the metal surface, thereby removing the oxide on the metal surface, which is a physical descaling method. Compared with the chemical descaling method, the new technology has the advantages of fast descaling speed, miniaturization of equipment, recycle of water and shotcrete, good descaling effect and no pollution. Descaling is to rely on high energy “water hammer” impact stress peel oxide, increase the proportion of pulp and high pressure water pressure can improve the stress and grinding stress. Steel and stainless steel and other hard metal spray angle β45 ° ~ 50 °, and copper, aluminum and other alloys β35 ° ~ 40 °. Each nozzle descaling width of 80 ~ 90mm, the target distance is generally controlled at 500 ~ 550mm, high pressure water flow and pulp flow ratio of 2: 1 desizing the best. There are many types of jetting units. The new technology of shotcrete descaling will replace the pickling and caustic washing technology of the existing metallurgical factory.