火焰筒耐热搪瓷漆熔烧工艺实验研究

Experimental Research of a Fusing Technique Involving the Coating of Heat-resistant Ceramic Lacquer on a Gas Turbine Flame Tube

某燃气轮机火焰筒内外表面均涂有进口耐热搪瓷漆 ,为尽快掌握该耐热搪瓷漆熔烧工艺 ,按照火焰筒涂层的熔烧工艺在试片上对熔烧工艺的主要工序环节进行对比试验 ,得出以下结论 ,喷砂砂粒大小及涂料粘稠度的变化对熔烧质量影响较小 ,熔烧温度和熔烧时间对熔烧质量影响较大 ,在较高的规定炉温下将零件置入熔烧炉 ,在较短的规定时间内取出零件 。

The inner and external surfaces of a gas turbine flame tube have been coated with a foreign-made heat-resistant ceramic lacquer. With a view to mastering in the shortest possible time the fusing technique of heat-resistant ceramic lacquer, contrast tests were conducted on test pieces with regard to the main procedures of fusing technique by applying that technique for the coating of the flame tube. These tests have brought forth the following conclusions. The size of spray sand particles and the change in the viscosity of the coating material have a relatively small influence on the fusing quality while the fusing temperature and time duration exert a fairly large influence on that quality. By putting parts into the fusing furnace at a relatively high stipulated furnace temperature and taking them out after a relatively short time it is possible to obtain a satisfactory coated surface quality and service performance.