公开(公告)号：WO2004094678A3

公开(公告)日：2005-06-09

申请号：PCT/US2004013715

申请日：2004-04-21

Applicant: ATT TECHNOLOGY LTD D B A ARNCO

Inventor： DAEMEN ROGER A ,  MOLINE KEITH E

IPC: B23K9/04 ,  B23K35/30 ,  E21B17/10 ,  F16L58/08 ,  F16L58/18

CPC classification number: E21B17/1085 ,  B23K9/04 ,  B23K9/046 ,  B23K35/3093 ,  B23K2201/002 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  F16L58/08 ,  F16L58/182 ,  Y10T428/12396 ,  Y10T428/12576 ,  Y10T428/12771 ,  Y10T428/12806 ,  Y10T428/12861 ,  Y10T428/12972

Abstract: Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfacing alloy has a low coefficient of friction resulting from excellent metal to metal resistance and significant reduction in industrial wear on industrial products, such as casing wear. Other embodiments of the invention include tool joints having the hardbanding alloy welded to the outer cylindrical surface to its box and pin members and to stabilizer ribs on the stabilizer used in earth boring, such as boring for oil and gas, other industrial products, and methods of applying the hardfacing alloy to their surfaces. The hardfacing alloy does not require any post weld treatment, has primary bondes in its microstructure, the carbons in the alloy are tied up in the formation of secondary carbides which add to the abrasion resistance, and have a quadratic crystallographic structure and a hardness of about 1725 Hv comparable to the prior art hardness of the chromium carbide primary carbide alloys of the prior art but is substantially less brittle than C-Cr-Fe hardfacing alloys.

Abstract translation: 本发明公开了一种耐磨服务的耐磨合金，能够耐受硅土粒子的顺序和可焊接在工业产品上的服务磨损，例如用于油气井钻井的工具接头和稳定剂等工业产品。 表面硬质合金由于优异的金属对金属的电阻和工业产品的工业磨损如套管磨损而具有较低的摩擦系数。 本发明的其他实施例包括具有焊接到外圆柱表面的硬焊合金与其箱和销构件的工具接头以及用于镗孔的稳定器上的稳定器肋，例如用于油气的镗孔，其它工业产品和方法 将表面硬化合金施加到其表面。 表面硬化合金不需要任何后焊接处理，其微观结构具有初级结合，合金中的碳被束缚在二次碳化物的形成中，这增加了耐磨性，并且具有二次晶体结构和硬度约为 1725Hv与现有技术的碳化铬一次碳化物合金的现有技术硬度相当，但是比C-Cr-Fe表面硬化合金基本上不那么脆。