US2016199947A1PendingUtilityA1

Filler metal for tig welding

39
Assignee: NAT UNIV PUKYONG IND UNIV COOPPriority: Aug 20, 2013Filed: Dec 3, 2013Published: Jul 14, 2016
Est. expiryAug 20, 2033(~7.1 yrs left)· nominal 20-yr term from priority
Inventors:Sang-Myung ChoDong-Soo OhHyo-Sik HamHyeon-Joo HaHee-Seop ShinJae-Ho JunJae Gyu ByunJung-Hyun ParkHyuk-Yong Kwon
B23K 35/0277B23K 35/02B23K 9/167
39
PatentIndex Score
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Claims

Abstract

The present invention provide a filler metal for TIG welding capable of stable welding, of which heat flux feeding area is wider than conventional wire filler metal and heat input per unit length is increased. The filler metal for TIG welding which is continuously supplied on a base metal to be melted by an arc after forming the arc between the base metal and an electrode over the base metal and supplying shield gas around the arc, wherein the cross-section of the filler metal has curved shape of which surface facing the electrode is concavely curved to the electrode

Claims

exact text as granted — not AI-modified
1 - 14 . (canceled) 
     
     
         15 . A filler metal for TIG welding which is continuously supplied on a base metal to be melted by an arc after forming the arc between the base metal and an electrode over the base metal and supplying shield gas around the arc, wherein a cross-section of the filler metal has curved shape of which surface facing the electrode is concavely curved to the electrode. 
     
     
         16 . The filler metal of  claim 15 , wherein the cross-section of the filler metal is a shape that a plane board represented by width and thickness is concavely curved to the electrode. 
     
     
         17 . The filler metal of  claim 16 , wherein the cross-section of the filler metal is symmetrical with respect to a vertical line of the base metal. 
     
     
         18 . The filler metal of  claim 16 , wherein the cross-section of the filler metal has a lower portion of 3rd spline curve. 
     
     
         19 . The filler metal of  claim 16 , wherein the cross-section of the filler metal has a lower portion of arc. 
     
     
         20 . The filler metal of  claim 16 , wherein the cross-section of the filler metal has a parabolic lower portion. 
     
     
         21 . The filler metal of  claim 16 , wherein the cross-section of the filler metal has a lower portion of which both ends beside a contacting portion with the base metal are inclined lines. 
     
     
         22 . The filler metal of  claim 16 , wherein the cross-section of the filler metal comprises a central plane board disposed in horizontal and an inclined plane board beside an end of the central plane board. 
     
     
         23 . The filler metal of  claim 22 , wherein the central plane board is thicker than inclined plane board. 
     
     
         24 . The filler metal of  claim 23 , wherein the central plane board is 1.1 through 2 times of the inclined plane board in thickness. 
     
     
         25 . The filler metal of  claim 22 , wherein the central plane board further comprises a bent portion. 
     
     
         26 . The filler metal of  claim 16 , wherein the width is 3 mm through 10 mm and the thickness is 0.3 through 1 mm. 
     
     
         27 . The filler metal of  claim 15 , wherein the filler metal is formed of stainless steel. 
     
     
         28 . The filler metal of  claim 27 , wherein the filler metal is formed of at least one selected from sus300 group, alloy 625, duplex sts2209 and super duplex. 
     
     
         29 . The filler metal of  claim 17 , wherein the cross-section of the filler metal has a lower portion of 3rd spline curve. 
     
     
         30 . The filler metal of  claim 17 , wherein the cross-section of the filler metal has a lower portion of arc. 
     
     
         31 . The filler metal of  claim 17 , wherein the cross-section of the filler metal has a parabolic lower portion. 
     
     
         32 . The filler metal of  claim 17 , wherein the cross-section of the filler metal has a lower portion of which both ends beside a contacting portion with the base metal are inclined lines. 
     
     
         33 . The filler metal of  claim 17 , wherein the cross-section of the filler metal comprises a central plane board disposed in horizontal and an inclined plane board beside an end of the central plane board. 
     
     
         34 . The filler metal of  claim 16 , wherein the filler metal is formed of stainless steel.

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