Claims
- 1. A track bushing made from steel, for an endless track of a track-type vehicle, comprising:
- a cylindrical tubular shape, a first end and a second end;
- a first end bearing surface adjacent said first end and a second end bearing surface adjacent said second end;
- a circumferential groove formed in at least one of said first end bearing surface and said second end bearing surface, said circumferential groove having a depth in an axial direction; and
- an abrasion resistant material deposited within said circumferential groove and metallurgically bonded to said bushing at a bond interface, said abrasion resistant material at said bond interface being diluted with no greater than 5% by weight track bushing steel material.
- 2. The track bushing, as set forth in claim 1, wherein said abrasion resistant material at said bond interface is diluted with no greater than 3% by weight track bushing steel.
- 3. The track bushing, as set forth in claim 2, wherein said abrasion resistant material at said bond interface is diluted with no greater than 1% by weight track bushing steel.
- 4. The track bushing, as set forth in claim 1, wherein said abrasion resistant material is stainless steel.
- 5. The track bushing, as set forth in claim 4, wherein said abrasion resistant material is martensitic stainless steel.
- 6. The track bushing, as set forth in claim 5, wherein said abrasion resistant material is martensitic stainless steel having a composition by weight percent, comprising:
- ______________________________________carbon 0.06 maximumchromium 11.0 to 12.5nickel 4.0 to 5.5molybdenum 0.4 to 0.7manganese 1.00 maximumsilicon 0.90 maximumphosphorous 0.04 maximumsulfur 0.03 maximumcopper 0.75 maximumiron balance.______________________________________
- 7. The track bushing, as set forth in claim 1, wherein said abrasion resistant material is metallurgically welded to each of said first end bearing surface and said second end bearing surface.
- 8. The track bushing, as set forth in claim 1, wherein said abrasion resistant material is metallurgically welded to said track bushing by laser welding means.
Parent Case Info
This is a divisional application of Application Ser. No. 08/835,886, filed Apr. 8, 1997.
US Referenced Citations (15)
Divisions (1)
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Number |
Date |
Country |
Parent |
835886 |
Apr 1997 |
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