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:
Dec. 14, 1982
Filed:
Mar. 04, 1981
Atsushi Shiga, Chiba, JP;
Kawasaki Steel Corporation, Kobe, JP;
Abstract
A process for both-side single layer, high speed submerged arc welding of steel plate for use in low-temperature applications having a particular chemical composition with a welding flux and welding wire is disclosed. The welding flux comprises 20 to 30 wt % of SiO.sub.2, less than 25 wt % of at least one of TiO.sub.2 and ZrO.sub.2, 10 to 20 wt % of CaO, less than 10 wt % of at least one of MnO and MgO, not more than 10 wt % of Al.sub.2 O.sub.3 and 20 to 40 wt % in total of CaF.sub.2 and BaO each being not more than 20 wt %, wherein a total content of acidic components (SiO.sub.2 %+TiO.sub.2 %+ZrO.sub.2 %) is 30 to 45 wt %, a total content of basic components (CaO %+MgO %+MnO %) is 20 to 30 wt % and a weight ratio of the total content of basic components to the total content of acidic components is within a range of 0.5 to 0.8; said these components being compounded so that a surface tension F of slag is not more than 450 dyne/cm as calculated from the following equation (1):
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile