Producing a tool for cutting sheet metals, comprises welding a cutter from a material of higher hardness on a base body from cast iron, and welding several welding seams next to each other to a buffer layer forming on a surface of the body

摘要

#CMT# #/CMT# The method for producing a tool (1) for cutting sheet metals, comprises welding a cutter (3) from a material of higher hardness on a base body (2) from cast iron, welding several welding seams next to each other to a buffer layer forming on a surface of the base body and then to a covering layer forming on the buffer layer, and processing the respective welding seams of the buffer layer and the covering layer by hammering after welding in stress-reducing manner. First and second welding seams of the buffer layer are arranged in a boundary region limiting the surface of the base body. #CMT# : #/CMT# The method for producing a tool (1) for cutting sheet metals, comprises welding a cutter (3) from a material of higher hardness on a base body (2) from cast iron, welding several welding seams next to each other to a buffer layer forming on a surface of the base body and then to a covering layer forming on the buffer layer, and processing the respective welding seams of the buffer layer and the covering layer by hammering after welding in stress-reducing manner. First and second welding seams of the buffer layer are arranged in a boundary region limiting the surface of the base body and subsequently the further welding seams are arranged in a gap limiting the first and second welding seams, and the first and second welding seams of the covering layer are arranged in the boundary region of the buffer layer and subsequently the further welding seams are arranged in a gap limiting the first and second welding seams. The base body consists of cast iron GG25 or GG70L. Impurities are removed from the welding seams of the buffer layer and/or the covering layer after the processing step. A further covering layers are welded on the covering layer. The cutter is mechanically processed after applying the buffer layer and the covering layer. The base body is machiningly processed to the buffer layer before welding. A recess serving for receiving the buffer layer is introduced in the base body. A filler material for welding cast iron is used for rewelding the welding seam of the buffer layer, and a filler material having the given hardness is used for rewelding the welding seam of the covering layer. An independent claim is included for a tool for cutting sheet metals. #CMT#USE : #/CMT# Method for producing a tool for cutting sheet metals. #CMT#ADVANTAGE : #/CMT# The method is capable of economically producing the cutting tool with high wear-resistance and reduced material cost thus effectively and simply cutting the sheet metals in crack-free manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The diagram shows a side view of a tool for cutting sheet metals. 1 : Cutting tool 2 : Base body 3 : Cutter.