Welding system for connecting component of higher conductivity to one of lower conductivity comprises ribs on base of first component which channel welding current into narrow zones and sink into material of second component

摘要

#CMT# #/CMT# Welding system for connecting a component (2) of higher conductivity to a second component (4) of lower conductivity comprises ribs (16) on the base of the first component which channel the welding current into narrow zones and sink into material of second component. #CMT# : #/CMT# Independent claims are included for: (A) welded joints produced using the system; (B) a method for welding components together using the system; and (C) a component with ribs as described for the first component. #CMT#USE : #/CMT# Attaching cutters to shafts in e.g. drills or angle grinders. #CMT#ADVANTAGE : #/CMT# Energy requirements for welding are reduced while weld quality is improved. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a cross-section of a drill, with an enlarged view of the welding zone. 2 : First component of higher conductivity 4 : Second component of lower conductivity 6 : Cutter 8 : Shaft 12 : Connecting zone on cutter 16 : Ribs 20 : Tubular support section 22 : Circular connecting face #CMT#METALLURGY : #/CMT# Preferred features: The first component is a cutter (6) and the second is a shaft (8) for a cutter or grinder, the first component being made from a sintered material and the second from steel. The second component has a tubular support section (20) with a circular connecting face (22) and the first has a connecting zone (12) with a corresponding radius of curvature. The ribs have a height of 0.3 - 3mm and they are separated by gaps of at least 1.5 mm.