Hardfacing alloys and related methods and products
A weldable hardfacing composition with specific elemental ranges forms crack-free deposits, addressing the limitations of existing materials by enhancing abrasion resistance and tool life.
WO2025171590A1 Publication Date: 2025-08-21ATT TECH LTD +1
3 Cites 0 Cited by
Patent Information
- Application Number
- PCT/CN2024/077279
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-02-16
- Publication Date
- 2025-08-21
AI Technical Summary
Technical Problem
Existing hardfacing materials, such as tungsten carbide, are expensive, erode easily, and crack under service conditions, leading to reduced tool life due to abrasion and crack propagation.
Method used
A weldable hardfacing composition comprising specific ranges of carbon, boron, manganese, silicon, chromium, niobium, titanium, vanadium, and iron, which can be welded to form crack-free deposits with high abrasive resistance and low friction, suitable for surfaces prone to abrasion.
Benefits of technology
The hardfacing composition extends tool life by providing effective abrasion resistance and minimizing casing wear, maintaining a crack-free state and reducing the need for additional surface treatments.
✦ Generated by Eureka AI based on patent content.
Abstract
A surface of a tool or other object may have a hardfacing deposit thereon that comprises a hardfacing alloy. Said hardfacing alloy may include: about 0.9 wt%to about 1.5 wt%carbon, about 1.5 wt%to about 2.5 wt%boron, about 0.5 wt%to about 1 wt%manganese, about 0.7 wt%to about 2.2 wt%silicon, about 5.5 wt%to about 8 wt%chromium, about 7 wt%to about 10 wt%niobium, about 0.2 wt%to about 0.7 wt%titanium, about 0.4 wt%to about 0.8 wt%vanadium, 0 wt%to about 0.2 wt%aluminum, 0 wt%to about 0.1 wt%total impurities, and a balance iron, wherein each wt%is based on a total weight of the hardfacing alloy. Examples of tools may include pipe joints, center wear pada, tubing connections, tube bodies, drill collars, stabilizers, earthmoving equipment, and dredging equipment.
Need to check novelty before this filing date? Find Prior Art