| 摘要 |
1,182,464. Welding by fusion. KOBE STEEL Ltd. 20 Feb., 1967 [20 Feb., 1966], No. 7920/67. Heading B3R. [Also in Division C7] A flux coated arc-welding rod for welding 9% Ni steel and providing a weld metal having substantially the same coefficient of expansion as 9% Ni steel has a core wire comprising 42-52% Ni, 11-17% Cr besides Fe and the core wire and/or coating includes 3-9% Mn, 1-4À5% Mo, 0À1-1À3% C, all percentages being based on the total weight of metal in the rod. A low hydrogen flux coating constituting 20-35% of the rod and having a silicate binder comprises: 34-70% alkaline earth metal carbonate, e.g., limestone 15-35% fluorite 1-8% rutile 2-10% silica sand 2-5% mica and Fe-Ti with or without Fe-Si and totalling at least 3%, Fe-Si being 2% max. and Ti from Fe-Ti being 9% max. Reference is made to weld deposits produced by the above welding rods and to similar deposits having less desirable physical characteristics, the deposits having compositions within the following:- 0À11-0À29% C 1À65-6À41% Mn 0À17-0À52% Si 10À21-17À37% Cr 39À27-53À32% Ni 0À16-5À63% Mo balance Fe. The following rod compositions are described: |
