| 摘要 |
A method of manufacturing erosion-resistant wearing parts and a wearing part are disclosed, whereby the wearing part manufactured according to the invention comprises at least one hard powder composition (A) and at least one ductile powder composition (B) that together are densified in a single pressing step into an entirely dense product. According to the method, the temperature coefficient of the hard powder composition (A) is controlled by keeping the temperature coefficient of the hard powder composition smaller than that of the encapsulating powder composition (B), whereby the hard powder composition (A), with the exception of the outer erosion-subjected surface of the wearing part, remains entirely encapsulated by powder composition (B) so effectively that the imposed eroding forces cannot essentially extrude the hard powder composition (A) out from the wearing part through its erosion-subjected outer surface.
|
