Abstract: A matrix powder for the production of components for wear-resistant applications by forming the matrix powder, along with an infiltrant, into a matrix, and and a wear-resistant component produced therefrom are presented. In order to improve mechanical properties, in particular resistance to erosion, it is proposed for at least some of the hard material to be in the form of spheroidal hard-material particles with a particle size of less than 500 &mgr;m.
Type:
Grant
Filed:
April 16, 2002
Date of Patent:
January 27, 2004
Assignee:
WOKA Schweisstechnik GmbH
Inventors:
Eberhard G. Findeisen, Vivek Ranjan Banerjee, Richard F. Moll, Siegmund Kremmer
Abstract: The invention relates to sintered particles for use in wear applications and to a process for producing the sintered particles. The particles are of substantially spheroidal shape, have a grain size of 20 to 180 &mgr;m and have a predominantly closed porosity or are free of pores. The process for producing such particles starts from a powder material with a partially porous internal structure, which is introduced into a furnace and sintered at a temperature at which the material of the metallic binder adopts a pasty state while applying pressure to reduce the pore content of the starting material.
Type:
Grant
Filed:
June 17, 2002
Date of Patent:
December 16, 2003
Assignee:
WOKA Schweisstechnik GmbH
Inventors:
Eberhard G. Findeisen, Richard F. Moll, Siegmund Kremmer
Abstract: A matrix powder for the production of components for wear-resistant applications by forming the matrix powder, along with an infiltrant, into a matrix, and and a wear-resistant component produced therefrom are presented. In order to improve mechanical properties, in particular resistance to erosion, it is proposed for at least some of the hard material to be in the form of spheroidal hard-material particles with a particle size of less than 500 &mgr;m.
Type:
Application
Filed:
April 16, 2002
Publication date:
February 27, 2003
Applicant:
WOKA Schweisstechnik GmbH
Inventors:
Eberhard G. Findeisen, Vivek Ranjan Banerjee, Richard F. Moll, Siegmund Kremmer
Abstract: The invention relates to sintered particles for use in wear applications and to a process for producing the sintered particles. The particles are of substantially spheroidal shape, have a grain size of 20 to 180 &mgr;m and have a predominantly closed porosity or are free of pores. The process for producing such particles starts from a powder material with a partially porous internal structure, which is introduced into a furnace and sintered at a temperature at which the material of the metallic binder adopts a pasty state while applying pressure to reduce the pore content of the starting material.
Type:
Application
Filed:
June 17, 2002
Publication date:
January 2, 2003
Applicant:
WOKA Schweisstechnik GmbH
Inventors:
Eberhard G. Findeisen, Richard F. Moll, Siegmund Kremmer