Title:
METHOD FOR INCREASING COMPRESSION STRESS OR REDUCING INTERNAL TENSION STRESS OF A LAYER
Document Type and Number:
WIPO Patent Application WO2002077312
Kind Code:
A3
Abstract:
The invention relates to a method for increasing internal pressure stress or for reducing the internal tension stress of an outer or outermost hard material layer that is applied on a hard metal, cermet or ceramic substrate body by means of CVD, PCVD or PVD. After coating, the coated substrate body is subjected to dry shot blasting using a granular shot blasting agent, which, according to the invention, has a maximum diameter of 150 mu m.
Inventors:
WESTPHAL HARTMUT (DE)
SOTTKE VOLKMAR (DE)
SOTTKE VOLKMAR (DE)
Application Number:
PCT/DE2001/004952
Publication Date:
January 03, 2003
Filing Date:
December 22, 2001
Export Citation:
Assignee:
WIDIA GMBH (DE)
WESTPHAL HARTMUT (DE)
SOTTKE VOLKMAR (DE)
WESTPHAL HARTMUT (DE)
SOTTKE VOLKMAR (DE)
International Classes:
C23C14/58; C23C16/56; (IPC1-7): C23C14/58; C23C16/56
Domestic Patent References:
| WO2000073532A1 | 2000-12-07 | |||
| WO1998016665A1 | 1998-04-23 |
Foreign References:
| US5318840A | 1994-06-07 | |||
| DE19719195A1 | 1998-11-12 | |||
| US6090476A | 2000-07-18 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 014, no. 582 (C - 0792) 26 December 1990 (1990-12-26)
SATO M ET AL: "Effects of shot peening on EVD-coated cemented carbide", PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON PROCESSING MATERIALS FOR PROPERTIES;HONOLULU, HI, USA NOV 7-10 1993, 1993, Warrendale, PA, USA, pages 1145 - 1148, XP008003492
SATO M ET AL: "Effects of shot peening on EVD-coated cemented carbide", PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON PROCESSING MATERIALS FOR PROPERTIES;HONOLULU, HI, USA NOV 7-10 1993, 1993, Warrendale, PA, USA, pages 1145 - 1148, XP008003492
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