WO2016133314A1 - Bec de soudage et son procédé de fabrication - Google Patents

Bec de soudage et son procédé de fabrication Download PDF

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Publication number
WO2016133314A1
WO2016133314A1 PCT/KR2016/001464 KR2016001464W WO2016133314A1 WO 2016133314 A1 WO2016133314 A1 WO 2016133314A1 KR 2016001464 W KR2016001464 W KR 2016001464W WO 2016133314 A1 WO2016133314 A1 WO 2016133314A1
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WO
WIPO (PCT)
Prior art keywords
manufacturing
head portion
head
welding
copper
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Application number
PCT/KR2016/001464
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English (en)
Korean (ko)
Inventor
조장현
조영웅
박병학
Original Assignee
조장현
조영웅
박병학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 조장현, 조영웅, 박병학 filed Critical 조장현
Publication of WO2016133314A1 publication Critical patent/WO2016133314A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/26—Accessories for electrodes, e.g. ignition tips

Definitions

  • the present invention relates to a welding tip and a method for manufacturing the same, and more particularly, to a welding tip and a method for manufacturing the same by improving the strength and extending the life, thereby preventing damage to the tip to enable long-term use.
  • Gas metal arc welding is a welding method in which an arc is generated between the front end of the supplied welding wire and the base material by continuously supplying a welding wire, which is a consumed electrode, to the base material while using a shielding gas.
  • the welding wire is led to the molten pool through the contact tip.
  • the welding wire guided to the molten pool is melted by the high arc heat and transferred to the molten pool through the arc column, and the molten site is surrounded by the shielding gas supplied through the gas nozzle. Is protected from the atmosphere.
  • the rate at which the welding wire is fed should match the melting rate of the welding wire.
  • a controlled current must be supplied to the welding wire, which current is transmitted to the welding wire via a contact tip.
  • electrical resistance welding is a welding method that uses a heat of electrical resistance by flowing a current through the contact tip to the base material (welded object).
  • a current flows through the contact tip to the base materials to be bonded, high temperature heat is generated by electrical resistance, and when the mechanical pressure is applied, the base materials are joined.
  • the contact tip may be damaged to cause an unstable arc, or the flow of current may not be good.
  • automated welding and high current welding have become common to improve productivity, which shortens the life of the contact tip, thereby making it inconvenient to frequently change the tip.
  • An object of the present invention is to provide a welding tip and a method of manufacturing the same, by improving the strength and extending the service life, thereby preventing damage to the tip to enable long-term use.
  • the present invention is formed, including a copper material, the body portion is formed in one end concave along the longitudinal direction; And a head portion formed of a copper tungsten alloy material and having a coupling protrusion fitted to the coupling groove at one end facing the body portion, wherein the coupling portion is fitted into the coupling groove and the head portion is joined to the body portion.
  • a welding tip that is integrally formed.
  • the present invention comprises the steps of manufacturing a body portion formed with a recessed groove in one end in the longitudinal direction including a copper material; Manufacturing a head portion having a coupling protrusion fitted into the coupling groove at one end of a copper tungsten alloy material; Fitting the coupling protrusion to the coupling groove and brazing to form the body and the head unit integrally; And it provides a method for manufacturing a welding tip comprising the step of tapering the outer peripheral surface of the head portion.
  • the present invention comprises the steps of manufacturing a body portion formed with a recessed groove in one end in the longitudinal direction including a copper material; Manufacturing a head portion having a coupling protrusion fitted into the coupling groove at one end of a copper tungsten alloy material; Fitting the coupling protrusion to the coupling groove and brazing to form the body and the head unit integrally; And it provides a method for manufacturing a tip for welding comprising the step of round processing on the outer peripheral surface of the head portion.
  • the present invention comprises the steps of manufacturing a body portion formed with a recessed groove recessed in the longitudinal direction at one end with a copper chromium alloy material; Manufacturing a head portion having a coupling protrusion fitted into the coupling groove at one end of a copper tungsten alloy material; Fitting the coupling protrusion to the coupling groove and brazing to form the body and the head unit integrally; And a method of manufacturing a tip for welding, which includes rounding the outer circumferential surface of the head portion.
  • Welding tip according to the invention and its manufacturing method has the following effects.
  • the strength can be improved and the effect of extending the head replacement cycle can be expected.
  • the copper material to fill the empty space of the copper tungsten alloy material by capillary force can be expected to increase the density, greatly improving the strength.
  • FIG. 1 is a perspective view of a welding tip according to an embodiment of the present invention.
  • FIG. 2 is an exploded cross-sectional view of the welding tip according to FIG. 1.
  • FIG. 3 is a flowchart illustrating a manufacturing process of a welding tip according to FIG. 1.
  • FIG. 4 is a block diagram illustrating a method of manufacturing a welding tip according to FIG. 1.
  • FIG. 5 is a perspective view of a welding tip according to another embodiment of the present invention.
  • FIG. 6 is an exploded cross-sectional view of the welding tip according to FIG. 5.
  • FIG. 7 is a flowchart illustrating a manufacturing process of a welding tip according to FIG. 5.
  • FIG. 8 is a block diagram illustrating a method of manufacturing a welding tip according to FIG. 5.
  • FIG. 9 is a perspective view of a welding tip according to another embodiment of FIG. 5.
  • FIG. 10 is a cross-sectional view of the welding tip according to FIG. 9.
  • FIG. 11 is a perspective view of a welding tip according to another embodiment of FIG. 5.
  • FIG. 12 is a cross-sectional view of the welding tip according to FIG. 11.
  • FIG. 1 to 10 illustrate a welding tip and a manufacturing method for the welding tip according to the present invention.
  • the welding tip 100 includes a body portion 110 and a head portion 130, and the head portion 130 and the body portion 110 are integrally coupled to each other. Is formed.
  • the body portion 110 is formed of a copper material.
  • the present invention is not limited thereto, and other materials may be added in addition to the copper material.
  • the body portion 110 is formed with a concave coupling groove 111 in one end in the longitudinal direction.
  • the welding tip 100 will be described as being a welding tip used for gas metal welding by way of example.
  • the body part 110 is formed with a first hollow hole 113 penetrating along the longitudinal direction of the body part 110 so that a welding wire (not shown) can be inserted therethrough.
  • the coupling groove 111 and the first hollow hole 113 are formed coaxially.
  • a coupling protrusion 131 formed in the head portion 130 is inserted into the coupling groove 111, and the body portion 110 is formed by the coupling groove 111 and the coupling protrusion 131.
  • the head part 130 is coupled.
  • the body portion 110 is formed by a powder metallurgy process using a copper material. This will be described in more detail in the manufacturing method of the welding tip 100. Since the body 110 is not in direct contact with the arc generated during welding, the body part 110 may be formed of only the copper material having relatively low rigidity. In particular, by manufacturing the body portion 110 using only the copper material can reduce the manufacturing cost of the body portion 110 can reduce the manufacturing cost of the welding tip.
  • the head portion 130 is formed of a copper tungsten alloy material.
  • the head portion 130 is formed with a coupling protrusion 131 protruding from one end facing the body portion 110.
  • the coupling protrusion 131 is fitted into the coupling groove 111 as described above.
  • a second hollow hole 133 is formed in the head part 130 to penetrate the length of the head part 130 so that the welding wire can be inserted therethrough.
  • the coupling protrusion 131 and the second hollow hole 133 are also formed coaxially.
  • the first hollow hole 113 and the second hollow hole 133 are In communication with each other, the welding wire (not shown) passes through the first hollow hole 113 and the second hollow hole 133 and protrudes to the other end of the head part 130.
  • the head portion 130 Since the head portion 130 must be able to withstand heat higher than the body portion 110 because an arc is generated to melt the welding wire (not shown), the head portion 130 is formed of the copper tungsten alloy material as described above. do. Like the body portion 11, the head portion 130 is formed by a powder metallurgy process using the copper tungsten alloy material.
  • the copper tungsten alloy material includes 15 wt% to 35 wt% of the copper powder, and the tungsten powder includes 55 wt% to 85 wt%. In the present exemplary embodiment, the copper is 30 wt% and the tungsten is 70 wt%.
  • the head portion 130 is tapered on the outer peripheral surface. Therefore, the size of the cross section of the head portion 130 is formed to gradually increase in the direction from the other end toward the one end.
  • the body portion 110 is manufactured using a copper material (step S105).
  • the fabrication of the body portion 110 uses the copper material as described above, and the base of the body portion through a powder metallurgy process. Unmarked) is formed.
  • the base (not shown) of the body portion is formed in the shape of a cylinder.
  • the body portion 110 is formed as a cylindrical example, but is not limited thereto.
  • the body portion 110 may be formed in a columnar shape having a polygonal cross section rather than a circular shape.
  • the drill groove is drilled at one end of the base (unmarked) of the body to concave along the longitudinal direction of the base (unmarked) of the body. (111) is formed.
  • the first hollow hole 113 penetrates along the longitudinal direction of the base (not shown) of the body part coaxially with the coupling groove 111 so that the welding wire (not shown) can pass therethrough.
  • the head portion 130 is manufactured using the copper tungsten alloy material.
  • S110 step Looking at the manufacturing process of the head portion 130 in detail, copper and Tungsten powder is mixed to form the base 130a of the head part through a powder metallurgy process. At this time, the base 130a of the head portion is also formed in the shape of a cylinder.
  • the powder metallurgy process includes 3 wt% to 13 wt% of the copper powder, and 55 wt% to 85 wt% of the tungsten powder.
  • the base 130a of the head portion formed through the powder metallurgy process further infiltrates the copper material.
  • the copper powder contains 12 wt% to 22 wt%.
  • the base 130a of the head part is formed by the powder metallurgy process and the infiltration, one end of the head part 130 is processed to form the coupling protrusion 131 of the head part 130.
  • the second hollow hole coaxial with the coupling protrusion 131 so that the welding wire (not shown) may pass through the head portion 130 and penetrates along the length direction of the head portion 130. 133).
  • the heat treatment process may be performed after the bonding of the body portion 110 and the head portion 130 to be described later.
  • the body part 110 and the head part 130 are manufactured through the step S105 and the step S110, respectively, the body part 110 and the head part 130 are bonded to each other by brazing and integrally formed.
  • the coupling protrusion 131 of the head portion 130 is fitted into the coupling groove 111 of the body portion 110, the bonding protrusion 131 is bonded by the brazing.
  • brass solder or silver solder is used as an adhesive.
  • the body 110 and the head 130 are joined by a silver solder brazing process using the silver solder as an adhesive. To form.
  • the welding tip 200 includes a body portion 210 and a head portion 230, and the head portion 230 and the body portion 210 are integrally coupled to each other. Is formed.
  • the body portion 210 is formed of a copper material, it is formed in the form of a cylinder.
  • One end of the body portion 210 is formed with a coupling groove 111 concave along the longitudinal direction.
  • the welding tip 100 used for the gas metal welding has been described as an example, but the welding tip 200 according to the present embodiment is exemplarily described as a welding tip used for electric resistance welding. . Therefore, since the welding wire (not shown) does not need to penetrate through the body portion 210, the first hollow hole does not need to be formed as in an exemplary embodiment.
  • the coupling protrusion 231 formed in the head portion 230 to be described later is also fitted to the coupling groove 211.
  • the body portion 210 is formed by a powder metallurgy process using the copper material, and thus the detailed description thereof will be omitted since it is formed in the same manner as the above-described embodiment.
  • the head portion 230 is formed of a copper tungsten alloy material.
  • the head portion 230 is provided with a coupling protrusion 231 protruding from one end facing the body portion 210.
  • the coupling protrusion 231 is fitted into the coupling groove 211 as described above to couple the head portion 230 and the body portion 210. Since the welding tip according to the present embodiment is used for electric resistance welding as described above, it is necessary to form a second through hole in the head part 230 because the welding wire (not shown) is not used. none.
  • the head portion 230 needs to flow a current through the base material, a large contact area with the base material may improve welding efficiency.
  • the leading edge of the head part 230 is formed in a round shape.
  • it is formed of a copper tungsten alloy material to withstand the high temperature heat generated by the electrical resistance between the base material.
  • the head 230 is also formed by a powder metallurgy process using a copper tungsten alloy material. Since the copper and the tungsten ratio in the copper tungsten alloy material is the same as the above-described embodiment, a description thereof will be omitted.
  • the body portion 210 is manufactured by using a copper material.
  • the body portion 210 is manufactured by using the copper material as described above, and the base of the body portion is formed through a powder metallurgy process. (Not shown) is formed. At this time, the base (not shown) of the body portion is formed in the shape of a cylinder.
  • the coupling groove 211 is formed by drilling the end of the body part base (not shown).
  • the head portion 230 is manufactured from a copper tungsten alloy material.
  • Step S210 The base portion 230a of the head portion through a powder metallurgy process by mixing copper powder and tungsten powder. ).
  • the base portion 230a of the head portion further infiltrates the copper material, thereby improving the strength of the head portion 230 by improving the density of the copper tungsten alloy material.
  • a coupling protrusion 231 is formed by processing. The base of the head portion 230a formed through this process prevents deformation through a heat treatment process.
  • the body portion 210 and the base portion 230a of the head portion manufactured through the step S205 and the step S210 are integrally formed by inserting the coupling protrusion 231 into the coupling groove 211 and bonding by brazing. Step S215)
  • the body portion 210 and the base portion 230a of the head portion are bonded through a silver solder brazing process using silver solder as in the above-described embodiment.
  • the body portion 210 and the base portion 230a of the head portion integrally formed are rounded the front edges of the head portion base (step S220), thereby completing the manufacture of the welding tip 200.
  • FIGS. 9 and 10 show another embodiment of the welding tip 200 shown in FIGS. 5 to 8. 9 and 10, the welding tip 200 ′ of the present embodiment is different from the welding tip 200 and the head 230 of the previous embodiment.
  • a welding protrusion 233 ′ protruding from the tip of the head portion 230 is formed.
  • the head portion 230 may be excessively damaged and damage to the body portion 210.
  • the wear level of the head portion 230 can be visually recognized by the user.
  • the head portion 230 can be replaced at an accurate time, thereby preventing damage to the body portion 210 and increasing the life of the welding tip 200 ′.
  • the welding protrusion 233 ⁇ may be formed together with the welding protrusion 233 ⁇ when the edges of the tip of the head 230 are rounded in the round processing of the head 230. Can be.
  • FIGS. 9 and 10 illustrate a welding tip 200 ′′ in accordance with another embodiment of the present invention.
  • the welding tip 200 ′′ according to the present embodiment is the same as the above-described embodiment, in particular, the embodiment shown in FIGS. 9 and 10 in most configurations and manufacturing methods. Therefore, only the differences from the above-described embodiments will be described in the following description. Also in this embodiment, the welding tip 200 ′′ includes a body portion 210 ′′ and a head portion 230 ′′.
  • the body portion 210 ′′ is formed of a copper chromium alloy.
  • the copper powder and the chromium powder are mixed to form a base of the body portion 210 ′′ through a powder metallurgy process, and then the copper material is further added. Infiltrate.
  • a coupling groove 211 ′′ is formed to allow the head portion 230 ′′ to fit into the body portion 210 ′′.
  • the head portion 230 ′′ is formed of a copper tungsten alloy.
  • the head portion 230 ′′ is formed in the shape of a cylinder.
  • the head portion 230 ′′ is also formed of a copper material and a tungsten material by a powder metallurgy process and a infiltration process.
  • the head portion 230 ′′ since the entire head portion 230 ′′ is fitted into the coupling groove 211 ′′, the head portion 230 ′′ is not formed with a separate coupling protrusion unlike the above-described embodiment.
  • the other end of 230 ′′ may serve as the coupling protrusion.
  • the head portion 230 ′′ is fitted to the body portion 210 ′′ to be coupled through a brazing process as in the above-described embodiments.
  • the welding tips 100, 200, 200 ′ and 200 ′′ shown in FIGS. 1 to 12 are integrally formed by joining the body and the head to each other.
  • a line is shown between the body portion and the head portion of the welding tip 100, 200, 200 ', 200 ′′ to show the bonding after the body portion and the head portion are manufactured, respectively. This does not mean separating the body and the head.
  • the strength of the head portion of the welding tip is improved and the replacement period of the head is long, so that the mass production of the welding tip can be achieved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

La présente invention concerne un bec de soudage et son procédé de fabrication. Le bec de soudage comprend : une partie corps qui est constituée d'un matériau de cuivre et a une rainure d'accouplement formée sur une de ses extrémité de façon à être concave le long de la direction de longueur ; et une partie tête qui est constituée d'un matériau d'alliage de cuivre-tungstène et a une saillie d'accouplement formée sur une extrémité faisant face à la partie corps, la saillie d'accouplement étant ajustée dans la rainure d'accouplement, la partie tête étant liée et formée d'un seul tenant avec la partie corps tandis que la saillie d'accouplement est ajustée dans la rainure de couplage.
PCT/KR2016/001464 2015-02-17 2016-02-15 Bec de soudage et son procédé de fabrication WO2016133314A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150024251A KR101542172B1 (ko) 2015-02-17 2015-02-17 용접용 팁 및 이의 제조방법
KR10-2015-0024251 2015-02-17

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WO2016133314A1 true WO2016133314A1 (fr) 2016-08-25

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WO (1) WO2016133314A1 (fr)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
KR20180065627A (ko) * 2016-12-08 2018-06-18 정래식 세라믹 용접팁 및 그 제조방법
KR102032479B1 (ko) 2018-06-20 2019-10-15 (주)큐엠앤이 이노베이션 접촉 팁 및 이를 구비하는 용접 장치
KR102252157B1 (ko) 2021-03-17 2021-05-17 주식회사 하이홈세라믹 세라믹 용접팁

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833983A (ja) * 1994-07-21 1996-02-06 Daihen Corp アーク溶接用コンタクトチップ及びその製造方法
KR200333673Y1 (ko) * 2003-08-26 2003-11-19 박상녕 불활성가스를 이용한 용접기용 토치의 콘텍트팁
KR100449568B1 (ko) * 1995-10-03 2004-11-16 가부시키가이샤 에스엠케이 용접용콘택트팁
JP2009090355A (ja) * 2007-10-11 2009-04-30 Shinko Kiki Kk コンタクトチップ及びコンタクトチップ製造方法
JP2009248131A (ja) * 2008-04-07 2009-10-29 Nippon Contact Chip Seisakusho:Kk コンタクトチップ及びコンタクトチップの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833983A (ja) * 1994-07-21 1996-02-06 Daihen Corp アーク溶接用コンタクトチップ及びその製造方法
KR100449568B1 (ko) * 1995-10-03 2004-11-16 가부시키가이샤 에스엠케이 용접용콘택트팁
KR200333673Y1 (ko) * 2003-08-26 2003-11-19 박상녕 불활성가스를 이용한 용접기용 토치의 콘텍트팁
JP2009090355A (ja) * 2007-10-11 2009-04-30 Shinko Kiki Kk コンタクトチップ及びコンタクトチップ製造方法
JP2009248131A (ja) * 2008-04-07 2009-10-29 Nippon Contact Chip Seisakusho:Kk コンタクトチップ及びコンタクトチップの製造方法

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