Wear resistant slurry pump parts produced using hot isostatic pressing

Patent metadata

Field	Value
Publication number	US-9574573-B2
Application number	US-201314072591-A
Country	US
Kind code	B2
Filing date	Nov 5, 2013
Priority date	Nov 6, 2012
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

In one aspect, a method for manufacturing a part for a centrifugal slurry pump is provided, comprising: forming a skeleton of the part having an outer dimension smaller than the part; placing the skeleton of the part in a metal enclosure having an interior dimension larger than the outer dimension of the skeleton of the part and thereby forming a space; adding a metal matrix composite powder into the metal enclosure to fill the space; and subjecting the metal enclosure to hot isostatic pressing, thereby allowing bonding of the metal matrix composite to the skeleton of the part to form the part.

First claim

We claim:

1. A method for manufacturing a part for a centrifugal slurry pump, comprising:
forming a skeleton of the part having an outer dimension smaller than the part;
placing the skeleton of the part in a metal enclosure having an interior dimension larger than the outer dimension of the skeleton of the part and thereby forming a space;
adding a metal matrix composite powder into the metal enclosure to fill the space; and
subjecting the metal enclosure to hot isostatic pressing, thereby allowing bonding of the metal matrix composite to the skeleton of the part to form the part.

2. The method of claim 1 , wherein the skeleton of the part is made from carbon steel, stainless steel, or other strong steel.

3. The method of claim 1 , wherein the metal matrix composite powder comprises a tungsten carbide powder and a nickel alloy powder.

4. The method of claim 3 , wherein the metal matrix composite powder comprises about 50% tungsten carbide powder and about 50% nickel alloy powder.

5. The method of claim 1 , wherein the part is a slurry pump sideliner.

6. The method of claim 1 , wherein the part is a slurry pump impeller.

7. The method of claim 6 , wherein the skeleton of the impeller comprises a leading edge made of wear resistant material.

8. The method of claim 7 , wherein the leading edge is made from tungsten carbide MMC or cemented carbide.

Assignees

• Syncrude Canada Ltd In Trust For The Owners Of The Syncrude Project
• Syncrude Canada Ltd

Inventors

• Roth Hugh
• Obaia Khaled
• Reid Damien
• Tieu John
• Macneil Daniel

Classifications

• F04D29/2294

  for protection, e.g. against abrasion · CPC title

• F05D2300/2263

  of tungsten, e.g. WC · CPC title

• Y10T29/49243

  Centrifugal type · CPC title

• F05D2300/171

  Steel alloys · CPC title

• F04D29/026 Primary

  especially adapted for liquid pumps · CPC title