The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 1980
Filed:
Nov. 08, 1978
Applicant:
Inventors:
Michael E Ashton, Derby, GB;
Anthony J Key, Upminster, GB;
Assignees:
Thermit Welding GB Limited, Essex, GB;
British Railways Board, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
164 54 ; 164110 ; 228241 ; 238164 ;
Abstract
A method of aluminothermic welding of members of austenitic steel containing by weight 10 to 20% manganese, 0.5 to 1.5% carbon and 0 to 5% nickel, and particularly low carbon austenitic steels containing by weight 14 to 17% manganese, 0.5 to 1.5% carbon and 0 to 5% nickel, comprises using a particulate mix for forming the aluminothermic steel, which mix is substantially free from phosphorus and silicon and a mould whose body material is predominantly a non-silicon material.