METHOD OF REGULATING DIMENSIONAL CHANGE AT SINTERING OF IRON BASED POWDER COMPUND Russian patent published in 2008 - IPC B22F3/12 C22C33/02 B22F1/00 

Abstract RU 2327546 C2

FIELD: metallurgy.

SUBSTANCE: method to obtain a sintered part out of iron based powdered material, containing copper, with a regulated change of dimensions at sintering includes preparation of the first powder (A), containing iron based powder (1) and copper (2) in an elementary form or a copper, diffuse tied with iron based powder (3). The second powder (B) contains powder (1) and preliminary alloyed iron-copper powder (4). Contents of copper in powder (B) are set equal to contents of copper in powder (A). To achieve it contents of copper in powder (A) or (B) are regulated. Contents of copper in powder (B) are determined either by choosing the ratio between powder (1) and powder (4) or by regulating copper contents in powder (4). Powders (A) and (B) are mixed in proportions providing a desired change in dimensions, then graphite and a lubricating substance are added to the mixture and, if necessary, a solid phase material and alloy elements are added. The obtained mixture is pressed and sintered.

EFFECT: method allows producing parts with a preset change of dimensions at sintering without change of chemical composition.

3 cl, 5 dwg, 1 tbl, 1 ex

Similar patents RU2327546C2

Title Year Author Number
POWDER COMPOSITION ON BASE OF IRON 2006
  • Larsson Mats
RU2366537C2
PRODUCTION OF DIFFUSION-ALLOYED IRON POWDER OR IRON-BASED POWDER, DIFFUSION-ALLOYED POWDER, COMPOSITION INCLUDING DIFFUSION-ALLOYED POWDER, COMPACTED AND SINTERED PART MADE THEREOF 2009
  • Larsson,Mats
RU2524510C2
POWDER, METHOD OF MAKING COMPONENT, AND COMPONENT 2007
  • Larsson Mats
RU2458761C2
POWDER ON IRON BASIS 2003
  • Kejzel'Man Mikhail
  • Skoglund Paul'
  • Vidarsson Khil'Mar
  • Knutsson Per
RU2329121C2
LOW-ALLOYED STEEL POWDER 2008
  • Litstrem Ola
  • Bengtsson Sven
  • Frjukkholm Robert
  • Bergman Ola
RU2482208C2
METALLURGICAL POWDER COMPOSITION 2006
  • Knutsson Per
  • Larsson Per-Olof
  • Vidarsson Khil'Mar
RU2419514C2
PRE-ALLOYED IRON-BASED POWDER, IRON-BASED POWDER MIXTURE CONTAINING PRE-ALLOYED IRON-BASED POWDER, AND METHOD OF MAKING PRESSED AND SINTERED PARTS FROM IRON-BASED POWDER MIXTURE 2015
  • Bergman, Ola
RU2699882C2
FERRUM-VANADIUM POWDERY ALLOY 2010
  • Bengtsson,Sven
RU2532221C2
NITRIDE-HARDENED SINTERED STEELS 2011
  • Berg,Sigurd
  • Dizdar,Senad
  • Ehngstrem,Ul'F
  • Lindstrem,Ola
  • Shnejder,Ehkkart
RU2559603C2
IRON-BASED COPPER-CONTAINING SINTERED ARTICLE AND METHOD OF ITS PRODUCTION 2002
  • Molik Paritosh
RU2280706C2

RU 2 327 546 C2

Authors

Juj Jan

Dates

2008-06-27Published

2003-10-15Filed