INTENSIFIED TEST ON THE TOOTH SURFACE OF DISC BIT

Thin wall welding rod can be made by replying the granular cast tungsten carbide with spherical sintered tungsten carbide,adding certain quantity of self fluxing alloy.The paper analyzes the composition,performance and wear resistance of the rod.Intensified test on tooth surface of disc bit is carried out.The study shows that the self made thin wall welding rod is featured by high mobility,high wear resistance of weldment.The bench test shows that the performance of well drilling with disc bit whose tooth surface is intensified is very good.