One-piece component and method for its production

Patent metadata

Field	Value
Publication number	US-9409234-B2
Application number	US-201313760181-A
Country	US
Kind code	B2
Filing date	Feb 6, 2013
Priority date	Feb 9, 2012
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A one-piece component includes a first subregion made of a base material, and a second subregion made of the base material as binder with intercalated hard material particles, the second subregion being injection-molded onto the first subregion by means of MIM injection molding, so that an integral connection is formed between the first subregion and the second subregion. Furthermore, a method for producing the one-piece component by means of MIM injection molding is described.

First claim

What is claimed is:

1. A one-piece component forming a cylinder without a hole, comprising:
a first subregion made of a base material, the first subregion being a cylindrical core portion of the cylinder, the cylindrical core portion being without a hole, the cylindrical core portion having an outer radius, and
a second subregion made of the base material as binder with intercalated hard material particles, the second subregion being an outer ring portion of the cylinder, the outer ring portion having an inner radius and an outer radius, the inner radius of the outer ring portion being equal to the outer radius of the cylindrical core portion, the outer radius of the outer ring portion being greater than the outer radius of the cylindrical core portion, wherein the cylindrical core portion and the outer ring portion are concentric,
the second subregion being injection-molded onto the first subregion by means of MIM injection molding, so that an integral connection is formed between the first subregion and the second subregion.

2. The component according to claim 1 , wherein the base material is an austenitic or ferritic steel, which includes iron and chromium.

3. The component according to claim 1 , wherein the hard material particles are oxides, including Al 2 O 3 , ZrO 2 or Y 2 O 3 .

4. The component according to claim 1 , wherein the hard material particles are one of a) carbides, including titanium carbide, wolfram carbide, niobium carbide or tantalum carbide, or b) nitrides, including titanium nitride.

Assignees

• Haubold Tilla
• Schumacher Matthias
• Bosch Gmbh Robert

Inventors

• Haubold Tilla
• Schumacher Matthias

Classifications

• B22F7/06 Primary

  of composite workpieces or articles from parts, e.g. to form tipped tools {(B22F7/002 takes precedence)} · CPC title

• C22C38/18

  containing chromium · CPC title

• B22F3/22

  for producing castings from a slip · CPC title

• B22F2302/25

  Oxide · CPC title

• C21D2211/001

  Austenite · CPC title