Manufacture method of installed and welded shearing tool of heavy forging

The invention relates to a manufacture method of an installed and welded shearing tool of a heavy forging, which is characterized by sequentially comprising the steps of: selecting materials, designing, processing parts, welding and thermally treating to obtain the installed and welded shearing tool of the heavy forging. A blade part (1) of the installed and welded shearing tool is made of a high-speed tool steel material with good high-temperature creep resistance, a support base body (2) is made of a common heat-resistant alloy steel material, the blade part and the support base body are subjected to shape and size design and milling machining, are welded by adopting a high-energy electronic beam and then subjected to high-temperature tempering thermal treatment to obtain the installed and welded shearing tool. The installed and welded shearing tool manufactured in the invention ensures that the blade has good high-temperature wear resistance, high-temperature plastic deformation resistance capability and high shearing quality for the heavy forging, has the advantages of manufacture material saving, low manufacture cost and long service life, can meet requirements for wear repairing and performance restoring after the blade is used for a long time, and replaces a traditional shearing tool for the heavy forging, made of the single material.