Electron beam welding of Ni/Co/Fe alloys, pre-treatment
Electron beam welding of Ni/Co/Fe alloys, pre-treatment
(OP)
Dear Colleagues,
Do you know if it is beneficial for the welding result to remove scales from superalloys prior to EB welding?
We have many years experience with alloy 75 EB welding. After mechanical machining, in some cases there is a time duration of several weeks (storage under ambient conditions, dry air) until welding.
No acid pickling etc will be done before welding, with excellent results regarding weld seam structure and stability.
So at the moment, I am planning welding tests of various other super alloy. Does somebody know wheter it may be important to perform pickling prior to EB welding, especially for alumina scale forming alloys like Kanthal?
Best regards
Feldmann
Do you know if it is beneficial for the welding result to remove scales from superalloys prior to EB welding?
We have many years experience with alloy 75 EB welding. After mechanical machining, in some cases there is a time duration of several weeks (storage under ambient conditions, dry air) until welding.
No acid pickling etc will be done before welding, with excellent results regarding weld seam structure and stability.
So at the moment, I am planning welding tests of various other super alloy. Does somebody know wheter it may be important to perform pickling prior to EB welding, especially for alumina scale forming alloys like Kanthal?
Best regards
Feldmann





RE: Electron beam welding of Ni/Co/Fe alloys, pre-treatment
Depending on joint configuration and thickness, planned testing will probably confirm that no pickling is required, except in severe cases.
http://www.welding-advisers.com/
RE: Electron beam welding of Ni/Co/Fe alloys, pre-treatment
Thanks very much in advance!
RE: Electron beam welding of Ni/Co/Fe alloys, pre-treatment