Method for producing a wear-resistant roller component

Patent metadata

Field	Value
Publication number	US-9815119-B2
Application number	US-201314415792-A
Country	US
Kind code	B2
Filing date	Jul 9, 2013
Priority date	Jul 31, 2012
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

Described is a wear-resistant roller component for handling abrasive materials where the component comprises a metal body with at least one surface. It is characterized in that a metal template having a pattern of through-going holes is arranged on the at least one surface of the metal body and in that a cover arranged to cover at least a part of the metal template is located at a distance from the metal template to form a gap between the cover and the metal template and in that a powder material suitable for sintering is introduced into the through-going holes in the metal template through the gap and in that the metal body, the metal template, the cover and the material powder are bonded together by means of a sintering process.

First claim

The invention claimed is:

1. A method for producing a wear-resistant roller component comprising the steps of:
arranging a metal template having a pattern of through-going holes on at least one surface of a metal body;
providing a cover covering at least a part of the metal template and arranging the cover at a distance to the metal template to form a gap between the cover and the metal template;
applying a powder material suitable for being sintered into the through-going holes of the metal template by introducing the powder material into the gap between the cover and the metal template; and
bonding together the metal body, the metal template, the cover and the powder material in a sintering process, such that the wear resistance of the metal template is lower than the wear resistance of the metal powder after the sintering process.

2. The method of claim 1 wherein the metal template is made from low-carbon steel.

3. The method of claim 1 wherein the sintering process is a hot isostatic pressing process.

4. A wear-resistant roller component for handling abrasive materials comprising a metal body with at least one surface wherein a metal template having a pattern of through-going holes is arranged on the at least one surface of the metal body and in that a cover arranged to cover at least a part of the metal template is arranged at a distance from the metal template to form a gap between the cover and the metal template and in that a powder material suitable for sintering is introduced into the through-going holes in the metal template through the gap and in that the metal body, the metal template, the cover and the material powder are bonded together by means of a sintering process.

5. The wear-resistant roller component according to claim 4 wherein the distance between the metal template and the metal body is at least 3 millimeters.

6. The wear-resistant roller component according to claim 4 wherein the through-going holes cover at least 60 percent of the surface area of the metal template.

7. The wear-resistant roller component according to claim 4 wherein the metal body is a cylindrical roller body.

Assignees

• Smidth As F L

Inventors

• Karakkunnummal Biju
• Olsson David Dam
• Swaminathan Raghunathan
• Waag Ulf

Classifications

• B22F3/15

  Hot isostatic pressing · CPC title

• B02C4/305 Primary

  Wear resistant rollers · CPC title

• B22F7/08 Primary

  with one or more parts not made from powder {(B22F7/062 takes precedence)} · CPC title

• B22F7/062

  involving the connection or repairing of preformed parts · CPC title

• B02C4/30

  Shape or construction of rollers · CPC title