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研究了熔剂法钢板热镀铝和铝-硅合金镀层.熔剂分为覆盖在熔融铝液表面的5种覆盖剂和4种水溶性熔剂及1种化学镀金属底层.从中选出一种覆盖剂和二种水溶性熔剂及预镀金属底层.镀层试样先经硝酸侵蚀法测定镀层上的针孔,用金相显微镜测量镀层的合金层厚度和附着层厚度.工艺试验表明,镀铝和铝-硅合金的最佳温度分别为700～710℃和680～690℃;热镀时间为10s;提升速度均为15～30cm/s.
The hot-dip aluminizing and aluminum-silicon alloy coating were studied by flux method.The flux was divided into five kinds of covering agents and four water-soluble fluxes and one kind of electroless metal plating covering the surface of the molten aluminum liquid, and a covering agent And two kinds of water-soluble flux and pre-plated metal underlayer.The coating sample was first determined by nitric acid etching pinhole on the coating, the coating thickness of the alloy layer and adhesion layer thickness measurement using a metallographic microscope process tests show that aluminum and aluminum - The optimum temperature of silicon alloy is 700 ~ 710 ℃ and 680 ~ 690 ℃ respectively; the hot-plating time is 10s; the lifting speed is 15 ~ 30cm / s.