公开(公告)号：US20220250273A1

公开(公告)日：2022-08-11

申请号：US17613838

申请日：2020-05-28

申请人： VOESTALPINE PRECISION STRIP GmbH

发明人： Bernhard LEEB ,  Gerhard RÖCKLINGER

IPC分类号： B27B33/14 ,  B23D65/00 ,  C22C38/22 ,  C22C38/24 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C21D9/24

摘要： A cutting member for a saw chain and a method for the production thereof, the cutting member comprising a support part made of a steel alloy and a cutting part welded to the support part along a welding connection made of a high speed steel. The steel alloy of the support part is a tool steel that has the following composition (specifications in % by weight): Carbon (C)
0.4 to 1.0 Silicon (Si)
up to 1.8 Manganese (Mn)
up to 0.6 Chromium (Cr)
4.5 to 12 Molybdenum (Mo)
up to 3 Vanadium (V)
up to 2 Iron (Fe) and accompany elements caused by melting and impurities as the remainder. The steel alloy of the support part in a quenched and tempered state has a hardness of more than 600 HV and a tensile strength of more than 2000 MPa as a result of curing at a suitable temperature above the austenitizing temperature of the high speed steel.