Electron Beam Weld Strength
Electron Beam Weld Strength
(OP)
Hi All,
I have two 1.8"OD Tube with a Wall of 1.4mm made of 17-4PH 105K Yield and I will be electron welding them together to a depth of 1mm. The Axial load of the 1.4mm tube is approx 345K lbf. I need to determine the axial strength of the 1mm weld sections. I could take the weld as the wall thickness and determine the tube strength, but due to the fusion welding i am not sure if the weld area is going to provide the same yield strength. Can you provide a suggestion for determining the weld strength.
MChel80
I have two 1.8"OD Tube with a Wall of 1.4mm made of 17-4PH 105K Yield and I will be electron welding them together to a depth of 1mm. The Axial load of the 1.4mm tube is approx 345K lbf. I need to determine the axial strength of the 1mm weld sections. I could take the weld as the wall thickness and determine the tube strength, but due to the fusion welding i am not sure if the weld area is going to provide the same yield strength. Can you provide a suggestion for determining the weld strength.
MChel80





RE: Electron Beam Weld Strength
RE: Electron Beam Weld Strength
As far as I am aware assuming this is a butt weld I would say that the joint is 95% as good as the parent metal in terms of strength, however why aren't you making the joint with a full penetration weld?
htt
rengths&source=bl&ots=hsULZHBexo&sig=X7afG4vnimxwgZe68wXd
cT8OcBw&hl=en&ei=MptrTZ-PB4qWOvD4naIL&sa=X&oi=book_result&ct=result&resnum=3&ved=
0CDAQ6AEwAjgK#v=onepage&q=electron%20beam%20weld%20strengths&f=false
desertfox
RE: Electron Beam Weld Strength
Second suggestion - instead of using calculations, I would run a test coupon simulating your weld joint configuration and qualify the electron beam weld procedure using tensile and bend testing (following ASME B&PV Code, Section IX Guidelines). Nothing better than having a production weld coupon that provides actual location of failure, and ductility of the weld joint.
Third suggestion - Regarding strength of the weld joint, as part of the qualification of the electron beam weld procedure, I would have a cross section of the weld region prepared for metallographic examination with microhardness testing. This will give you some idea as to the strength of the weld region.
RE: Electron Beam Weld Strength
MChel80
RE: Electron Beam Weld Strength
RE: Electron Beam Weld Strength
Is there a reason why you cannot have a complete penetration weld and then finish the ID by turning, skiving, burnishing, etc.?
RE: Electron Beam Weld Strength
I cannot have a complete penetration weld as the internals will be pre-honed before welding and cannot be accessed with general manufacturing practises,
RE: Electron Beam Weld Strength
You will need to age after welding to achieve any reliable properties.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube