Patent ID: 11933107
Assignee: SANDVIK MINING AND CONSTRUCTION TOOLS AB
Field: Materials, metallurgy (Chemistry)
Classification: CPC E  B  C | IPC B  C  E

Claim 8:
9. A method for manufacturing a disc cutter for a cutting unit used in an undercutting apparatus the disc cutter including at least one annular disc body made of a metal alloy or metal matrix composite having a first side, a second side arranged substantially opposite to the first side and a radially peripheral part, and a cemented carbide cutting part in the form of a continuous ring mounted in and substantially encircling the radially peripheral part of the at least one disc body which protrudes outwardly there form to engage with the rock during the cutting operation, the continuous ring being positioned between a first layer of the disc body and a second layer of the disc body, the method comprising the steps of:
a) providing at least one annular disc body made of a metal alloy or at least one annular disc body made of a metal matrix composite and a cemented carbide cutting part;
b) assembling the at least one disc body and the cutting part together;
c) enclosing the at least one disc body and the cutting part in a capsule;
d) optionally evacuating air from the capsule;
e) sealing the capsule; and
f) subjecting the capsule to a predetermined temperature of above about 1000° C. and a predetermined pressure of from about 300 bar to about 1500 bar during a predetermined time.