西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (1): 141-144.DOI: 10.3863/j.issn.1674-5086.2010.01.028

• 石油机械工程及其他 • Previous Articles     Next Articles

EXPERIMENTAL STUDY ON COMPOSITE REPAIR WELDING ON STRENGTHENING THE SURFACE OF STEEL TOOTH ROLLER CONE BIT

HUANG Ben-sheng1，2;FAN Zhou2;TANG An-jun2;YANG Mei2;LIU Qing-you1   

  1. 1.State Key Lab of Oil and Gas Reservoir Geology and Exploitation，Southwest Petroleum University，Chengdu Sichuan 610500，China；2.School of Materials Science and Engineering，Southwest Petroleum University，Chengdu Sichuan 610500，China
  • Received:2009-01-09 Revised:1900-01-01 Online:2010-02-20 Published:2010-02-20
  • Contact: HUANG Ben-sheng

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Abstract:

Composite repair welding layers with diamond are obtained by Repair Welding with Composite welding rod containing diamond and Carbide through O2-C2H2 flaming.Morphology of composite repair welding layers and diamond surface after metalizing are analyzed with optical microscope and XRD，and bonding strength between repair welding layers and substrate and wear resistance of repair welding layers are tested by material testing machine and abrasion tester.The results show that diamond surface after metalizing has certain metallicity and wettability.The complex layers are compacted and wellproportioned，the shear strength of which is 625MPa and wear value is reduced by 10%～70%.The complex layers prolong the working life of steel tooth roller cone bit.

Key words: steel tooth roller cone bit, diamond, composite repair welding, shear strength, wear resistance

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