Manufacture of anticorrosive and antiwear composite steel pipe with devitrified glass lining

Application Number  00129553 Application Date  2000.10.09
Publication Number  1288978 Publication Date  2001.03.28
Priority Information    
Applicant(s) Name  Qinghua Univ.  
Inventor(s) Name  Liang Kaiming;Wang Shuangxi;Zhang Xianhui  
Patent Agency Code  11201 Patent Agent  luo wenqun
AbstractThe preparation method of composite steel pipe water high-aluminium pyroceram lining includes the following steps: firstly, placing the aluminothermics powder into steel pipe to be coated, placing said steel pipe into centrifuge, starting centrifuge and progressively accelerating to make the aluminothermics powder uniformly stick over the inner wall of steel pipe, keeping uniform rotation and injecting melt pyroceram into steel pipe, lighting aluminothermics, keeping constant speed rotation, then progressively reducing speed, stopping machine, heat-insulating and cooling to room temp. so as to obtain the invented composite steel pipe with excellent corrosion resistance, wear-resistance and impact resistance. It is easy to connect, and applicable to long-distance pipeline transfer.