Study on High Temperature Performance of Alcohol-based White Corundum/Zirconium Powder Composite Coating
Author of the article:ZHANG Lin;ZHOU Baineng;WU Xiezheng;GOU Pengfei;XIAO Yi
Author's Workplace：Technical&quality Department,Sichuan Dongshu New Materials Co.,Ltd.,Deyang 618000,China;Casting and Forging Division,Dongfang Turbine Co.,Ltd.,Deyang 618000,China
Key Words：zircon powder white corundum high temperature properties sintering strength
Abstract：
In the production of large steel castings,both zircon powder and white corundum had excellent anti-sand performance,but in some aspects they cannot get satisfactory results.The application of different particles of zircon powder and white corundum coating on large steel castings was studied.The results show that when the ratio of 325 mesh zirconium powder to 200 mesh white corundum is 20∶80,the sintering compressive strength is the highest,0.931 MPa.Under this ratio,the sintering between particles is obvious,more compact and less void.The coating produced by the compound aggregate of this ratio has moderate bauxite,good suspension,high coating strength,low air capacity and high temperature blowout resistance.The field application shows that the castings and coatings are easy to peel off and the surface of castings is good.
