Welding auxiliary joining part, matrixes for placing the welding auxiliary joining part, a connection method for the welding auxiliary joining part, and production method for the welding auxiliary joining part and the matrixes

A connection method for a welding auxiliary joining part with a head and a rounded tip for setting in at least a first component with a die as a counter-bearing having a concave recess with a cone-shaped inner wall in at least a partial portion with a die radius MR in the range of 1.0 mm≦MR≦60 mm for preparing a subsequent welding method with the connection method comprising the steps of:

• setting the welding auxiliary joining part in the at least one first component of a poorly weldable material and against the die, wherein there is a material displacement gap provided between a tip geometry of the welding auxiliary joining part and the die geometry, if the following conditions are fulfilled:
• 0.001
• ≤
• SR
• MR
• ≤
• 0.1
• ,
• wherein SR denotes a tip radius of the rounded tip of the welding auxiliary joining part.

Connection method for a welding auxiliary joining part with a head and a rounded tip for setting in at least a first component of poorly weldable material with a die as a counter-bearing having a concave recess with an arc-shaped inner wall at least in a partial portion thereof, wherein said die has a die radius MR in the range of 1.0 mm≦MR≦60 mm for preparing a subsequent welding method, wherein the connection method comprises the steps of:

• setting the welding auxiliary joining part in the at least one first component of a poorly weldable material and against the die, wherein there is a material displacement gap provided between a tip geometry of the welding auxiliary joining part and the die geometry, if the following conditions are fulfilled:
• 0.01
• ≤
• SR
• MR
• ≤
• 1
• ,
• wherein SR denotes a tip radius of the rounded tip of the welding auxiliary joining part.

Connection method for a welding auxiliary joining part with a head and a rounded tip for setting in at least a first component of poorly weldable material with a die as a counter-bearing comprising a concave recess with an inner wall arc-shaped in at least a partial portion with a die radius MR in the range of 1.0 mm≦MR≦60 mm, for preparing a subsequent welding method, wherein the connection method comprises the steps of:

• setting the welding auxiliary joining part in the at least one first component of a poorly weldable material and against the die, wherein there is a material displacement gap provided between a tip geometry of the welding auxiliary joining part and the die geometry, if the following conditions are fulfilled:
• 0.01
• ≤
• SR
• MR
• ≤
• 0.5
• ,
• wherein SR denotes a tip radius of the rounded tip of the welding auxiliary joining part.

Connection method for a welding auxiliary joining part with a head and a tip for setting in at least a first component of poorly weldable material with a die as a counter-bearing, which has a recess with a die angle MW between a central axis of the recess and an inner wall of the recess, for preparing a subsequent welding method, the connection method comprising the steps of:

• setting the welding auxiliary joining part in the at least one first component of a poorly weldable material and against the die, wherein there is a material displacement gap provided between a welding auxiliary joining part and the die, if the following conditions are fulfilled:
• 0.4
• ≤
• SW
• 1
• MW
• ≤
• 1.0
• ,
• wherein SW denotes a tip radius of the tip of the welding auxiliary joining part measured between the central axis and the outer surface of the welding auxiliary joining part.