WO2016133314A1 - Welding tip and manufacturing method therefor - Google Patents

Welding tip and manufacturing method therefor 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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PCT/KR2016/001464
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French (fr)
Korean (ko)
Inventor
조장현
조영웅
박병학
Original Assignee
조장현
조영웅
박병학
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Application filed by 조장현, 조영웅, 박병학 filed Critical 조장현
Publication of WO2016133314A1 publication Critical patent/WO2016133314A1/en

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    • 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.

Abstract

The present invention relates to a welding tip and a manufacturing method therefor. The welding tip comprises: a body part which is made of a copper material and has a coupling groove formed on one end thereof so as to be concave along the lengthwise direction; and a head part which is made of a copper tungsten alloy material and has a coupling protrusion formed on one end facing the body part, the coupling protrusion being fitted into the coupling groove, wherein the head part is bonded and formed integrally with the body part while the coupling protrusion is fitted into the coupling groove.

Description

용접용 팁 및 이의 제조방법Welding tip and manufacturing method thereof
본 발명은 용접용 팁 및 이의 제조방법에 관한 것으로, 보다 상세하게는 강도를 향상시켜 수명을 연장시킴으로써, 팁의 손상을 억제하여 장기간 사용이 가능하게 하는 용접용 팁 및 이의 제조방법에 관한 것이다.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.
가스메탈아크용접(GMA 용접)은 차폐가스를 사용하면서 소모전극인 용접용 와이어를 모재 쪽으로 연속적으로 공급하여, 송급된 용접 와이어의 선단과 모재사이에서 아크가 발생되도록 하는 용접법이다. 용접용 와이어는 콘택트 팁을 통하여 용융지로 유도되는데, 용융지로 유도된 용접 와이어는 높은 아크 열에 의해 용융되어 아크 기둥을 거쳐 용융지로 이행하게 되며, 용융부위는 가스노즐을 통하여 공급되는 차폐가스에 의해 주위의 대기로부터 보호된다.Gas metal arc welding (GMA 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.
용접이 진행되는 동안 아크를 안정적으로 유지하기 위해서는 용접 와이어가 송급되는 속도와 용접 와이어의 용융 속도가 일치하여야 한다. 이를 위하여 용접 와이어에는 제어된 전류가 공급되어야 하는데, 그러한 전류는 콘택트 팁(contact-tip)을 통하여 용접 와이어로 전송된다.In order to keep the arc stable during the welding process, the rate at which the welding wire is fed should match the melting rate of the welding wire. For this purpose a controlled current must be supplied to the welding wire, which current is transmitted to the welding wire via a contact tip.
한편, 전기저항용접은 콘택트 팁을 통해 모재(피용접물)에 전류를 흐르게 하여 그 전기적 저항열을 이용하는 용접법이다. 접합시키고자 하는 모재들에 콘택트 팁을 통해 전류를 흐르게 하면 전기적 저항에 의해 고온의 열이 발생하고 이때 기계적 압력을 가하면 모재들이 접합하게 된다.On the other hand, 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). When 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.
그런데 전술한 바와 같은 가스메탈아크용접이나 전기저항용접을 장시간 수행하게 되면 콘택트 팁이 손상되어 아크의 발생이 불안해지거나, 전류의 흐름이 좋지 않게 되어 결국에는 팁을 교환해 주어야 한다. 최근에는 생산성 향상을 위해 자동화용접, 고전류용접이 보편화되어 콘택트 팁의 수명이 단축됨으로써 팁을 빈번히 교환해 주어야 하는 불편함이 있다.However, if the above-described gas metal arc welding or electrical resistance welding is performed for a long time, the contact tip may be damaged to cause an unstable arc, or the flow of current may not be good. In recent years, 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.
본 발명은 강도를 향상시켜 수명을 연장시킴으로써, 팁의 손상을 억제하여 장기간 사용이 가능하게 하는 용접용 팁 및 이의 제조방법을 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION 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.
본 발명은, 구리소재를 포함하여 형성되며, 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부; 및 구리 텅스텐 합금소재로 형성되며, 상기 몸체부와 마주하는 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 포함하며, 상기 결합돌기가 상기 결합홈에 끼워지면서 상기 헤드부가 상기 몸체부에 접합하여 일체로 형성되는 용접용 팁을 제공한다.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. To provide a welding tip that is integrally formed.
본 발명의 다른 측면에 따르면, 본 발명은, 구리소재를 포함하여 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부를 제작하는 단계; 구리 텅스텐 합금소재로 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 제작하는 단계; 상기 결합돌기를 상기 결합홈에 끼워 맞추면서 브레이징 공정으로 접합하여 상기 몸체부와 상기 헤드부를 일체로 형성하는 단계; 및 상기 헤드부의 외주면에 테이퍼 가공을 하는 단계를 포함하는 용접용 팁의 제조방법을 제공한다.According to another aspect of the present invention, 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.
본 발명의 또 다른 측면에 따르면, 본 발명은, 구리소재를 포함하여 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부를 제작하는 단계; 구리 텅스텐 합금소재로 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 제작하는 단계; 상기 결합돌기를 상기 결합홈에 끼워 맞추면서 브레이징 공정으로 접합하여 상기 몸체부와 상기 헤드부를 일체로 형성하는 단계; 및 상기 헤드부의 외주면에 라운드 가공을 하는 단계를 포함하는 용접용 팁의 제조방법을 제공한다.According to another aspect of the present invention, 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.
본 발명의 또 다른 측면에 따르면, 본 발명은, 구리 크롬 합금소재로 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부를 제작하는 단계; 구리 텅스텐 합금소재로 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 제작하는 단계; 상기 결합돌기를 상기 결합홈에 끼워 맞추면서 브레이징 공정으로 접합하여 상기 몸체부와 상기 헤드부를 일체로 형성하는 단계; 및 상기 헤드부의 외주면에 라운드 가공을 하는 단계를 포함하는 용접용 팁의 제조방법을 포함한다.According to another aspect of the present invention, 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.
본 발명에 따른 용접용 팁 및 이의 제조방법은 다음과 같은 효과가 있다. Welding tip according to the invention and its manufacturing method has the following effects.
첫째, 구리와 텅스텐 합금을 포함하는 소재로 용접용 팁의 헤드부를 제작함으로써, 강도가 향상되고 헤드부 교체주기를 연장시키는 효과를 기대할 수 있다.First, by manufacturing the head portion of the welding tip with a material containing copper and tungsten alloy, the strength can be improved and the effect of extending the head replacement cycle can be expected.
둘째, 분말야금 공정과 용침 공정을 통해 헤드부를 제작함으로써, 모세관력으로 구리소재가 구리 텅스텐 합금소재의 빈 공간을 채워주므로 밀도가 향상되고, 강도가 크게 향상되는 효과를 기대할 수 있다.Second, by manufacturing the head portion through the powder metallurgy process and infiltration process, 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.
도 1은 본 발명의 일 실시예에 따른 용접용 팁의 사시도이다.1 is a perspective view of a welding tip according to an embodiment of the present invention.
도 2는 도 1에 따른 용접용 팁의 분해 단면도이다.2 is an exploded cross-sectional view of the welding tip according to FIG. 1.
도 3은 도 1에 따른 용접용 팁의 제조과정이 도시된 순서도이다.3 is a flowchart illustrating a manufacturing process of a welding tip according to FIG. 1.
도 4는 도 1에 따른 용접용 팁의 제조방법이 도시된 블록도이다.4 is a block diagram illustrating a method of manufacturing a welding tip according to FIG. 1.
도 5은 본 발명의 다른 실시예에 따른 용접용 팁의 사시도이다.5 is a perspective view of a welding tip according to another embodiment of the present invention.
도 6은 도 5에 따른 용접용 팁의 분해 단면도이다.6 is an exploded cross-sectional view of the welding tip according to FIG. 5.
도 7은 도 5에 따른 용접용 팁의 제조과정이 도시된 순서도이다.7 is a flowchart illustrating a manufacturing process of a welding tip according to FIG. 5.
도 8은 도 5에 따른 용접용 팁의 제조방법이 도시된 블록도이다.8 is a block diagram illustrating a method of manufacturing a welding tip according to FIG. 5.
도 9는 도 5의 다른 실시 형태에 따른 용접용 팁의 사시도이다.9 is a perspective view of a welding tip according to another embodiment of FIG. 5.
도 10은 도 9에 따른 용접용 팁의 단면도이다.10 is a cross-sectional view of the welding tip according to FIG. 9.
도 11은 도 5의 또 다른 실시 형태에 따른 용접용 팁의 사시도이다.11 is a perspective view of a welding tip according to another embodiment of FIG. 5.
도 12는 도 11에 따른 용접용 팁의 단면도이다.12 is a cross-sectional view of the welding tip according to FIG. 11.
도 1 내지 도 10에는 본 발명에 따른 용접용 팁 및 용접용 팁의 제조방법이 도시되어 있다.1 to 10 illustrate a welding tip and a manufacturing method for the welding tip according to the present invention.
먼저, 도 1 내지 도 4를 참조하여 본 발명의 일 실시예에 따른 용접용 팁 및 제조방법을 살펴보면 다음과 같다. 도 1 및 도 2를 참조하여 보면, 상기 용접용 팁(100)은 몸체부(110) 및 헤드부(130)를 포함하며, 상기 헤드부(130)과 상기 몸체부(110)이 결합하여 일체로 형성된다. 상기 몸체부(110)는 구리소재로 형성된다. 하지만, 본 발명은 이에 한정되지 않고, 구리소재 이외에 다른 소재도 추가될 수 있다.First, referring to Figures 1 to 4 look at the welding tip and manufacturing method according to an embodiment of the present invention. 1 and 2, 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. However, the present invention is not limited thereto, and other materials may be added in addition to the copper material.
본 실시예에서는 원기둥의 형태로 형성되는데, 이에 한정되는 것은 아니며 횡단면이 다각형인 기둥 형상으로 형성될 수도 있다. 상기 몸체부(110)에는 일단에 길이 방향을 따라 오목하게 결합홈(111)이 형성된다. In the present embodiment, it is formed in the form of a cylinder, but is not limited thereto, and may be formed in a column shape having a polygonal cross section. The body portion 110 is formed with a concave coupling groove 111 in one end in the longitudinal direction.
본 실시예에 따른 상기 용접용 팁(100)은 예시적으로 가스메탈용접에 사용되는 용접용 팁인 것으로 설명한다. 따라서 상기 몸체부(110)에는 용접용 와이어(미도시)가 관통 삽입할 수 있도록 상기 몸체부(110)의 길이 방향을 따라 관통되는 제1 중공홀(113)이 형성된다. 상기 결합홈(111)과 상기 제1 중공홀(113)은 동축으로 형성된다. 후술되겠지만, 상기 결합홈(111)에는 상기 헤드부(130)에 형성되는 결합돌기(131)가 끼워지며, 상기 결합홈(111)과 상기 결합돌기(131)에 의해 상기 몸체부(110)와 상기 헤드부(130)가 결합된다.The welding tip 100 according to the present embodiment will be described as being a welding tip used for gas metal welding by way of example. Accordingly, 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. As will be described later, 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.
상기 몸체부(110)는 구리소재를 이용하여 분말야금 공정으로 형성한다. 이에 대해서는 상기 용접용 팁(100)의 제조방법에서 보다 구체적으로 설명하기로 한다. 상기 몸체부(110)는 용접 시 발생되는 아크와 직접 접촉되는 것이 아니므로, 비교적 강성이 약한 상기 구리소재만으로 형성하여도 무방하다. 특히, 상기 몸체부(110)를 상기 구리소재만으로 제작함으로써 상기 몸체부(110)의 제작단가를 절감하여 상기 용접용 팁의 제작비용을 절감시킬 수 있다.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.
상기 헤드부(130)는 구리 텅스텐 합금소재로 형성된다. 상기 헤드부(130)에는 상기 몸체부(110)와 마주하는 일단으로부터 돌출되는 결합돌기(131)가 형성된다. 상기 결합돌기(131)는 전술한 바와 같이 상기 결합홈(111)에 끼워진다. 상기 헤드부(130)에도 상기 용접용 와이어가 관통 삽입할 수 있도록 상기 헤드부(130)의 길이 방향을 따라 관통하는 제2 중공홀(133)이 형성된다. 상기 결합돌기(131)와 상기 제2 중공홀(133)도 동축 상에 형성된다. 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.
상기 결합돌기(133)가 상기 결합홈(131)에 끼워져 상기 몸체부(110)와 상기 헤드부(130)가 결합되면, 상기 제1 중공홀(113)과 상기 제2 중공홀(133)이 연통되어 상기 용접용 와이어(미도시)가 상기 제1 중공홀(113) 및 상기 제2 중공홀(133)을 관통하여 상기 헤드부(130)의 타단으로 돌출된다. When the coupling protrusion 133 is inserted into the coupling groove 131 and the body 110 and the head 130 are coupled, 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.
상기 헤드부(130)는 상기 용접 와이어(미도시)를 용융시킬 수 있도록 아크가 발생하기 때문에 상기 몸체부(110)보다 고온의 열에 버틸 수 있어야 하므로, 전술한 바와 같이 상기 구리 텅스텐 합금소재로 형성된다. 상기 헤드부(130)도 상기 몸체부(11)와 마찬가지로 상기 구리 텅스텐 합금 소재를 이용하여 분말야금 공정으로 형성된다. 상기 구리 텅스텐 합금소재는 상기 구리분말을 15 wt% 내지 35 wt%를 포함하고, 상기 텅스텐분말은 55 wt% 내지 85 wt%를 포함한다. 본 실시예에서는 예시적으로 상기 구리가 30 wt%이며, 상기 텅스텐은 70 wt%인 것을 예로 들어 설명한다.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%.
상기 헤드부(130)는 외주면에 테이퍼가 형성된다. 따라서 상기 헤드부(130)의 횡단면의 크기가 상기 타단으로부터 상기 일단을 향하는 방향을 향할수록 점진적으로 커지도록 형성된다. 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.
도 3 및 도 4를 참조하여, 상술한 바와 같은 상기 용접용 팁의 제조방법을 살펴보면 다음과 같다. 3 and 4, look at the manufacturing method of the welding tip as described above are as follows.
먼저, 구리소재를 이용하여 상기 몸체부(110)를 제작한다(S105 단계) 상기 몸체부(110)의 제작은 전술한 바와 같이 상기 구리소재를 이용하며, 분말야금 공정을 통해 상기 몸체부의 기초(미표기)가 형성된다. 이때, 상기 몸체부의 기초(미표기)는 원기둥의 형상으로 형성된다. 본 실시예에서는 전술한 바와 같이 상기 몸체부(110)가 원기둥의 형태로 형성된 것을 예로 설명하지만 이에 한정되는 것은 아니다. 상기 몸체부(110)는 횡단면이 원형이 아닌 다각형인 기둥 형상으로 형성될 수도 있다. First, 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. At this time, the base (not shown) of the body portion is formed in the shape of a cylinder. In this embodiment, as described above, 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.
상기 분말야금 공정을 통해 원기둥 형상의 상기 몸체부의 기초(미표기)가 형성되면, 상기 몸체부의 기초(미표기)의 일단에 드릴 가공을 하여 상기 몸체부의 기초(미표기)의 길이 방향을 따라 오목한 상기 결합홈(111)을 형성한다. 그리고 상기 용접 와이어(미도시)가 관통할 수 있도록 상기 결합홈(111)과 동축으로 상기 몸체부의 기초(미표기)의 길이 방향을 따라 관통되는 상기 제1 중공홀(113)을 형성한다. 이러한 과정을 통해 상기 몸체부(110)의 제작이 완료되며, 이와 같이 제작된 상기 몸체부(110)는 열처리 공정을 통해 변형을 방지한다. 그러나 상기 열처리 공정은 후술되는 상기 몸체부(110)와 상기 헤드부(130)의 접합 후 이루어져도 무방하다.When the base (unmarked) of the cylindrical body is formed through the powder metallurgy process, 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. Through this process, the production of the body part 110 is completed, and the body part 110 manufactured as described above prevents deformation through a heat treatment process. However, the heat treatment process may be performed after the bonding of the body portion 110 and the head portion 130 to be described later.
상기 몸체부(110)의 제작이 완료되면, 상기 구리 텅스텐 합금 소재를 이용하여 상기 헤드부(130)를 제작한다.(S110 단계) 상기 헤드부(130)의 제작과정을 보다 상세히 살펴보면, 구리와 텅스텐 분말을 혼합하여 분말야금 공정을 통해 상기 헤드부의 기초(130a)를 형성한다. 이때 상기 헤드부의 기초(130a)도 원기둥의 형상으로 형성된다. 본 실시예에서는 상기 분말야금 공정에서는 상기 구리분말은 3 wt% 내지 13 wt%, 상기 텅스텐분말은 55 wt% 내지 85 wt%를 포함한다.When the manufacturing of the body portion 110 is completed, 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. In the present embodiment, the powder metallurgy process includes 3 wt% to 13 wt% of the copper powder, and 55 wt% to 85 wt% of the tungsten powder.
상기 분말야금 공정을 통해 형성된 상기 헤드부의 기초(130a)는 상기 구리소재를 더 용침시킨다. 이때 상기 구리분말은 12 wt% 내지 22 wt% 포함한다. 상기 헤드부의 기초(130a)에 상기 구리소재를 용침시키면, 모세관력에 의해 상기 구리 텅스텐 합금 소재의 미세한 틈으로 흡수되어 상기 구리 텅스텐 합금소재로 형성된 상기 헤드부의 기초(130a)의 밀도가 향상된다. 즉, 용침에 의해 상기 합금소재의 미세한 틈이 없어지므로 밀도가 향상되면서 강도도 향상되는 효과가 있다.The base 130a of the head portion formed through the powder metallurgy process further infiltrates the copper material. In this case, the copper powder contains 12 wt% to 22 wt%. When the copper material is infiltrated into the base portion 130a of the head portion, the density of the base portion 130a of the head portion formed of the copper tungsten alloy material is improved by being absorbed into the fine gap of the copper tungsten alloy material by capillary force. That is, since the fine gap of the alloy material is eliminated by infiltration, the density is improved and the strength is also improved.
상기 분말야금 공정과 상기 용침에 의해 상기 헤드부의 기초(130a)가 형성되면, 상기 헤드부(130)의 일단을 가공하여 상기 헤드부(130)의 상기 결합돌기(131)를 형성한다. 그리고 상기 헤드부(130)에도 상기 용접용 와이어(미도시)가 관통할 수 있도록 상기 결합돌기(131)와 동축이며, 상기 헤드부(130)의 길이 방향을 따라 관통하는 상기 제2 중공홀(133)을 형성한다. 이러한 과정을 통해 상기 헤드부(130)의 제작이 완료되며, 이와 같이 제작된 상기 헤드부(130)는 열처리 공정을 통해 변형을 방지한다. 그러나 상기 열처리 공정은 후술되는 상기 몸체부(110)와 상기 헤드부(130)의 접합 후 이루어져도 무방하다.When 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). Through this process, the manufacturing of the head part 130 is completed, and the head part 130 thus manufactured is prevented from deformation through a heat treatment process. However, the heat treatment process may be performed after the bonding of the body portion 110 and the head portion 130 to be described later.
상기 S105 단계 및 상기 S110 단계를 통해 상기 몸체부(110) 및 상기 헤드부(130)가 각각 제작되면, 상기 몸체부(110)와 상기 헤드부(130)를 브레이징으로 접합하여 일체로 형성한다.(S115 단계) 보다 구체적으로 설명하면, 상기 헤드부(130)의 상기 결합돌기(131)를 상기 몸체부(110)의 상기 결합홈(111)에 끼워질 때, 상기 브레이징으로 접합한다. 상기 브레이징 접합에서는 놋쇠납 또는 은납등을 접착제로 사용하는데, 본 실시예에서는 예시적으로 상기 은납을 접착제로 사용하는 은납 브레이징 공정으로 상기 몸체부(110) 및 상기 헤드부(130)를 접합하여 일체로 형성한다.When 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. In more detail, when 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. In the brazing bonding, brass solder or silver solder is used as an adhesive. In this embodiment, for example, the body 110 and the head 130 are joined by a silver solder brazing process using the silver solder as an adhesive. To form.
상기 몸체부(110)와 상기 헤드부(130)가 일체로 형성되면, 상기 헤드부(130)의 외주면에 테이퍼 가공을 한다.(S120 단계) 용접 정밀도를 향상하기 위해서는 상기 용접용 와이어(미도시)가 상기 몸체부(110) 및 상기 헤드부(130)를 관통하여 돌출되는 상기 헤드부(130)의 선단의 크기를 작게하는 것이 좋다. 따라서 상기 헤드부(130)의 외주면에 테이퍼 가공을 하면 상기 헤드부(130)의 횡단면은 상기 헤드부(130)의 선단으로터 상기 몸체부(110)를 향할수록 점진적으로 커지도록 형성되며, 즉 상기 헤드부(130) 선단으로 갈수록 횡단면 크기가 점진적으로 작아지는 것이다.When the body portion 110 and the head portion 130 are integrally formed, tapering is performed on the outer circumferential surface of the head portion 130. (S120 step) In order to improve welding precision, the welding wire (not shown) It is preferable to reduce the size of the tip of the head portion 130 protruding through the body portion 110 and the head portion 130. Therefore, when the taper process is performed on the outer circumferential surface of the head portion 130, the cross section of the head portion 130 is formed to gradually increase toward the body portion 110 from the front end of the head portion 130. The cross-sectional size gradually decreases toward the tip of the head 130.
이하에서는 도 5 내지 도 8을 참조하여 본 발명의 다른 실시예에 따른 용접용 팁 및 제조방법을 살펴본다. 도 5 및 도 6을 참조하여 보면, 상기 용접용 팁(200)은 몸체부(210) 및 헤드부(230)를 포함하며, 상기 헤드부(230)과 상기 몸체부(210)가 결합하여 일체로 형성된다. 전술한 일 실시예에서와 마찬가지로 상기 몸체부(210)는 구리소재로 형성되며, 원기둥의 형태로 형성된다. 상기 몸체부(210)의 일단에는 길이 방향을 따라 오목하게 결합홈(111)이 형성된다.Hereinafter, a welding tip and a manufacturing method according to another exemplary embodiment of the present invention will be described with reference to FIGS. 5 to 8. Referring to FIGS. 5 and 6, 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. As in the above-described embodiment, 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.
일 실시예에서는 가스메탈용접에 사용되는 용접용 팁(100)을 예로 들어 설명하였으나, 본 실시예에 따른 상기 용접용 팁(200)은 예시적으로 전기저항용접에 사용되는 용접용 팁인 것으로 설명한다. 따라서 상기 몸체부(210)에는 용접용 와이어(미도시)가 관통할 필요가 없어 일 실시예와 같이 제1 중공홀이 형성될 필요가 없다. 상기 결합홈(211)에도 후술되는 상기 헤드부(230)에 형성되는 결합돌기(231)가 끼워진다.In one embodiment, 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.
본 실시예에서도 상기 몸체부(210)는 상기 구리소재를 이용하여 분말야금 공정으로 형성하며, 전술한 일 실시예와 동일하게 형성되는 것이므로 구체적인 설명은 생략하기로 한다.In the present embodiment, 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.
상기 헤드부(230)는 구리 텅스텐 합금소재로 형성된다. 상기 헤드부(230)에는 상기 몸체부(210)와 마주하는 일단으로부터 돌출되는 결합돌기(231)가 형성된다. 상기 결합돌기(231)는 전술한 바와 같이 상기 결합홈(211)에 끼워져 상기 헤드부(230)와 상기 몸체부(210)를 결합시킨다. 본 실시예에 따른 상기 용접용 팁은 전술한 바와 같이 전기저항 용접에 사용되는 것이므로 상기 용접용 와이어(미도시)가 사용되지 않기 때문에 상기 헤드부(230)에 제2 관통홀을 형성할 필요가 없다.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.
상기 헤드부(230)는 모재로 전류를 흐르도록 해야하므로 모재와의 접촉 면적이 큰 것이 용접 효율을 향상시킬 수 있다. 다만, 상기 헤드부(230)가 상기 모재와 접촉할 때 상기 헤드부(230)에 의한 상기 모재의 손상을 방지하기 위해 상기 헤드부(230)의 선단 모서리는 라운드 형태로 형성된다. 그리고 상기 모재와의 사이에 전기저항으로 발생되는 고온의 열에 버틸 수 있도록 구리 텅스텐 합금 소재로 형성된다. 상기 헤드부(230)도 구리 텅스텐 합금 소재를 이용하여 분먈야금 공정으로 형성된다. 상기 구리 텅스텐 합금소재에서의 상기 구리와 상기 텅스텐 비율을 전술한 일 실시예와 동일하므로 이에 대한 설명은 생략한다.Since 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. However, in order to prevent damage to the base material by the head part 230 when the head part 230 is in contact with the base material, the leading edge of the head part 230 is formed in a round shape. And 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.
도 7 및 도 8을 참조하여, 상술한 바와 같은 상기 용접용 팁의 제조방법을 살펴보면, 다음과 같다다. 먼저, 구리소재를 이용하여 상기 몸체부(210)를 제작한다.(S205 단계) 상기 몸체부(210)의 제작은 전술한 바와 같이 상기 구리소재를 이용하며, 분말야금 공정을 통해 상기 몸체부의 기초(미표기)가 형성된다. 이때, 상기 몸체부의 기초(미표기)는 원기둥의 형상으로 형성된다. 상기 분말야금 공정을 통해 상기 몸체부 기초(미표기)가 형성되면, 상기 몸체부 기초(미표기)의 일단에 드릴 가공을 하여 상기 결합홈(211)을 형성한다. 이러한 공정을 통해 상기 몸체부(210)의 제작이 완료되면, 상기 몸체부(210)는 열처리 공정을 통해 변형을 방지한다.Referring to Figures 7 and 8, look at the manufacturing method of the welding tip as described above, as follows. First, the body portion 210 is manufactured by using a copper material. (S205) 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. When the body part base (not shown) is formed through the powder metallurgy process, the coupling groove 211 is formed by drilling the end of the body part base (not shown). When the manufacturing of the body portion 210 is completed through this process, the body portion 210 prevents deformation through a heat treatment process.
상기 몸체부(210)의 제작이 완료되면, 구리 텅스텐 합금소재로 상기 헤드부(230)를 제작한다.(S210 단계) 구리분말과 텅스텐 분말을 혼합하여 분말야금 공정을 통해 상기 헤드부의 기초(230a)를 형성한다. 상기 헤드부의 기초(230a)는 상기 구리소재를 더 용침시켜, 구리 텅스텐 합금소재의 밀도를 향상시킴으로써 상기 헤드부(230)의 강도를 향상시킨다. 상기 헤드부의 기초(230a) 일단에는 가공에 의해 결합돌기(231)가 형성된다. 이러한 공정을 통해 형성된 상기 헤드부(230a)의 기초는 열처리 공정을 통해 변형을 방지한다.When the manufacturing of the body portion 210 is completed, 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. At one end of the base 230a of the head portion, 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.
S205 단계 및 S210 단계를 통해 제작된 상기 몸체부(210) 및 상기 헤드부의 기초(230a)는 상기 결합돌기(231)를 상기 결합홈(211)에 끼우고 브레이징으로 접합하여 일체로 형성한다.(S215 단계) 본 실시예에서도 전술한 일 실시예와 마찬가지로 은납을 접착제로 사용하는 은납 브레이징 공정을 통해 상기 몸체부(210) 및 상기 헤드부의 기초(230a)를 접합시킨다.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) In the present embodiment, 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.
일체로 형성된 상기 몸체부(210)와 상기 헤드부의 기초(230a)는 상기 헤드부 기초의 선단 모서리를 라운드 가공(S220 단계)하는 것으로 상기 용접용 팁(200)의 제조가 완료된다.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.
한편, 도 9 및 도 10은 도 5 내지 도 8에 도시된 용접용 팁(200)의 다른 실시 형태가 도시된 것이다. 도 9 및 도 10을 참조하여 보면, 본 실시 형태의 상기 용접용 팁(200`)은 이전 실시예의 용접용 팁(200)과 상기 헤드부(230)에 차이가 있다. 본 실시형태의 상기 용접용 팁(200`)을 보다 구체적으로 살펴보면, 상기 헤드부(230)의 선단에 돌출된 용접돌기(233`)가 형성된다. 전술한 바와 같이 상기 용접용 팁(200, 200`)은 전기저항용접에 사용되는 것이므로, 일 실시예의 용접용 팁(100)과 같이 용접용 와이어가 공급되는 것이 아니기 때문에 상기 헤드부(230)의 마모 정도를 명확히 알 수 없다. 이에 따라 상기 헤드부(230)가 지나치게 손상되어 상기 몸체부(210)까지 손상을 입힐 수 있다.Meanwhile, 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. Looking at the welding tip 200 ′ of the present embodiment in more detail, a welding protrusion 233 ′ protruding from the tip of the head portion 230 is formed. As described above, since the welding tips 200 and 200 ′ are used for electric resistance welding, welding wires are not supplied like the welding tips 100 of the embodiment, so The degree of wear is not clear. Accordingly, the head portion 230 may be excessively damaged and damage to the body portion 210.
그런데 본 실시형태의 용접용 팁(200`)에서와 같이 상기 헤드부(230)에 상기용접돌기(233`)를 형성하면 상기 헤드부(230)의 마모 정도를 사용자가 육안으로 파악할 수 있기 때문에 정확한 시기에 상기 헤드부(230)의 교체가 가능해서 상기 몸체부(210)까지 손상되는 것을 방지하며 상기 용접용 팁(200`)의 수명을 증가시키는 효과도 있다.However, when the welding protrusion 233` is formed on the head portion 230 as in the welding tip 200` of the present embodiment, 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 ′.
상기 용접돌기(233`)의 형성은 상기 헤드부(230)에 라운드 가공을 하는 단계에서 상기 헤드부(230) 선단의 모서리를 라운드 형상으로 가공할 때 상기 용접돌기(233`)를 함께 형성할 수 있다.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.
도 11 및 도 12는 본 발명의 또 다른 실시 형태에 따른 용접용 팁(200″)이 도시되어 있다. 본 실시 형태에 따른 상기 용접용 팁(200″)은 대부분의 구성과 제조방법에 있어 전술한 실시예, 특히 도 9 및 도 10에 도시된 실시예와 동일하다. 따라서 이하의 설명에서는 전술한 실시예들과의 차이점만 설명하기로 한다. 본 실시 형태에서도 상기 용접용 팁(200″)은 몸체부(210″)와 헤드부(230″)를 포함한다. 11 and 12 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 ″.
다만 본 실시 형태에서 상기 몸체부(210″)는 구리 크롬 합금으로 형성된다. 상기 몸체부(210″)의 제작방법은 전술한 실시예들과 마찬가지로 구리 분말과 크롬 분말을 혼합하여 분말야금 공정을 통해 상기 몸체부(210″)의 기초를 형성한 후, 상기 구리소재를 더 용침시킨다. 또한 상기 몸체부(210″)에 상기 헤드부(230″)가 끼워져 결합할 수 있도록 결합홈(211″)이 형성된다.However, in the present embodiment, the body portion 210 ″ is formed of a copper chromium alloy. In the manufacturing method of the body portion 210 ″, as in the above-described embodiments, 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. In addition, a coupling groove 211 ″ is formed to allow the head portion 230 ″ to fit into the body portion 210 ″.
상기 헤드부(230″)는 구리 텅스텐 합금으로 형성된다. 본 실시예에서는 상기 헤드부(230″)가 원기둥의 형태로 형성된다. 상기 헤드부(230″)도 구리소재와 텅스텐 소재가 분말야금 공정과 용침 공정에 의해 형성된다. 본 실시예에서는 상기 헤드부(230″) 전체가 상기 결합홈(211″)에 끼워져 결합하므로 상기 헤드부(230″)에는 전술한 실시예와 달리 별도의 결합돌기가 형성되지 않지만, 상기 헤드부(230″)의 타단이 상기 결합돌기와 같은 역할을 할 수 있다. 상기 헤드부(230″)가 상기 몸체부(210″)에 끼워져 결합되는 것은 전술한 실시예들과 마찬가지로 브레이징 공정을 통해 이루어진다.The head portion 230 ″ is formed of a copper tungsten alloy. In this embodiment, 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. In the present embodiment, 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.
도 1 내지 도 12에 도시된 용접용 팁(100, 200, 200`, 200″)은 전술한 바와 같이 몸체부와 헤드부가 접합히여 일체로 형성된다. 도면 상에는 몸체부와 헤드부가 각각 제조된 후, 접합하는 것을 보여주기 위한 것으로 용접용 팁(100, 200, 200`, 200″)의 몸체부와 헤드부 사이에 선이 도시되어 있으나, 이는 실질적으로 몸체부와 헤드부를 분리하는 것을 의미하지는 않는다.As described above, 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. In the drawings, 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.
본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.
본 발명에 따른 용접용 팁 및 이의 제조방법을 이용하면, 용접용 팁의 헤드부 강도가 향상되어 헤드부 교체주기가 길어지므로 유지비용이 절갑되는 용접용 팁의 대량생산이 이루어질 수 있다.By using the welding tip according to the present invention and a method for manufacturing the same, 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.

Claims (19)

  1. 구리소재를 포함하여 형성되며, 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부; 및It is formed including a copper material, the body portion is formed in one end concave in the longitudinal direction concave; And
    구리 텅스텐 합금소재로 형성되며, 상기 몸체부와 마주하는 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 포함하며,It is formed of a copper tungsten alloy material, and includes a head portion formed with a coupling protrusion fitted to the coupling groove at one end facing the body portion,
    상기 결합돌기가 상기 결합홈에 끼워지면서 상기 헤드부가 상기 몸체부에 접합하여 일체로 형성되는 용접용 팁.Welding head tip is formed integrally by joining the head portion to the body portion while the coupling protrusion is fitted into the coupling groove.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 몸체부에는 용접용 와이어가 관통하도록 상기 몸체부의 길이 방향을 따라 관통되는 제1 중공홀이 형성되며, The body portion is formed with a first hollow hole penetrating along the longitudinal direction of the body portion to penetrate the welding wire,
    상기 헤드부에는 상기 제1 중공홀과 연통되며, 상기 용접용 와이어가 관통하도록 상기 헤드부의 길이 방향을 따라 관통되는 제2 중공홀이 형성되는 용접용 팁.And a second hollow hole communicating with the first hollow hole and penetrating along the length direction of the head portion so that the welding wire passes therethrough.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 헤드부는 상기 헤드부의 타단으로부터 돌출되는 용접돌기가 더 형성되는 용접용 팁.The head portion is a welding tip further formed with a welding protrusion protruding from the other end of the head portion.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 몸체부는 상기 구리소재와 혼합되는 크롬소재를 더 포함하는 용접용 팁.The body portion is a welding tip further comprises a chromium material mixed with the copper material.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 결합돌기의 횡단면의 크기는 상기 헤드부 몸체의 횡단면의 크기와 동일하거나 더 작게 형성되는 용접용 팁.The size of the cross section of the coupling protrusion is the welding tip is formed the same or smaller than the size of the cross section of the head portion body.
  6. 구리소재를 포함하여 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부를 제작하는 단계;Manufacturing a body part including a copper material at one end of which a coupling groove is formed concave along a length direction;
    구리 텅스텐 합금소재로 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 제작하는 단계;Manufacturing a head portion having a coupling protrusion fitted into the coupling groove at one end of a copper tungsten alloy material;
    상기 결합돌기를 상기 결합홈에 끼워 맞추면서 브레이징 공정으로 접합하여 상기 몸체부와 상기 헤드부를 일체로 형성하는 단계; 및Fitting the coupling protrusion to the coupling groove and brazing to form the body and the head unit integrally; And
    상기 헤드부의 외주면에 테이퍼 가공을 하는 단계를 포함하는 용접용 팁의 제조방법.Method of manufacturing a tip for welding comprising the step of tapering the outer peripheral surface of the head portion.
  7. 청구항 6에 있어서,The method according to claim 6,
    상기 헤드부를 제작하는 단계에서는,In the step of manufacturing the head portion,
    구리분말 및 텅스텐분말을 혼합한 합금소재를 이용하여 분말야금 공정으로 상기 헤드부의 기초를 형성하고, 상기 헤드부의 기초에 상기 구리분말을 용침시켜 모세관력에 의해 상기 구리분말이 상기 헤드부의 기초를 형성하는 상기 합금소재의 틈을 채우면서 상기 헤드부를 형성하고, 상기 헤드부의 기초 일단을 가공하여 상기 결합돌기를 형성하는 용접용 팁의 제조방법. An alloy material mixed with copper powder and tungsten powder is used to form the base of the head part by a powder metallurgy process, and the copper powder is infiltrated on the head part to form the base of the head part by capillary force. Forming the head portion while filling the gap of the alloy material, and processing the base end of the head portion manufacturing method of the welding tip to form the engaging projection.
  8. 청구항 6에 있어서,The method according to claim 6,
    상기 몸체부를 제작하는 단계에서는,In the step of manufacturing the body portion,
    구리소재를 이용하여 분말야금 공정으로 상기 몸체부의 기초를 형성하고, 상기 몸체부의 기초 일단에 드릴 가공으로 상기 결합홈을 형성하는 용접용 팁의 제조방법. Forming the base of the body portion by a powder metallurgy process using a copper material, the method of manufacturing a welding tip for forming the coupling groove by drilling on the base end of the body portion.
  9. 청구항 7에 있어서,The method according to claim 7,
    상기 헤드부를 제작하는 단계에서는,In the step of manufacturing the head portion,
    상기 분말야금 공정 시, 상기 구리분말은 3 wt% 내지 13 wt%를 포함하며, 상기 텅스텐분말은 55 wt% 내지 85 wt%를 포함하고,In the powder metallurgy process, the copper powder includes 3 wt% to 13 wt%, the tungsten powder includes 55 wt% to 85 wt%,
    상기 구리분말를 용침시킬 때에는 상기 구리분말을 12 wt% 내지 22 wt% 포함하는 용접용 팁의 제조방법.Method for producing a welding tip comprising 12 to 22 wt% of the copper powder when the copper powder is infiltrated.
  10. 청구항 6에 있어서,The method according to claim 6,
    상기 몸체부를 제작하는 단계 및 상기 헤드부를 제작하는 단계 각각에서는,In each of the step of manufacturing the body portion and the step of manufacturing the head portion,
    용접용 와이어가 관통할 수 있도록 상기 몸체부의 길이 방향을 따라 관통하는 제1 관통홀 및 상기 헤드부의 길이 방향을 따라 관통하는 제2 관통홀을 형성하는 용접용 팁의 제조방법.And a first through hole penetrating along the length direction of the body portion and a second through hole penetrating along the length direction of the head portion so that a welding wire can pass therethrough.
  11. 구리소재를 포함하여 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부를 제작하는 단계;Manufacturing a body part including a copper material at one end of which a coupling groove is formed concave along a length direction;
    구리 텅스텐 합금소재로 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 제작하는 단계;Manufacturing a head portion having a coupling protrusion fitted into the coupling groove at one end of a copper tungsten alloy material;
    상기 결합돌기를 상기 결합홈에 끼워 맞추면서 브레이징 공정으로 접합하여 상기 몸체부와 상기 헤드부를 일체로 형성하는 단계; 및Fitting the coupling protrusion to the coupling groove and brazing to form the body and the head unit integrally; And
    상기 헤드부의 외주면에 라운드 가공을 하는 단계를 포함하는 용접용 팁의 제조방법.The manufacturing method of the tip for welding comprising the step of round processing on the outer peripheral surface of the head portion.
  12. 청구항 11에 있어서,The method according to claim 11,
    상기 헤드부를 제작하는 단계에서는,In the step of manufacturing the head portion,
    구리분말 및 텅스텐분말을 혼합한 합금소재를 이용하여 분말야금 공정으로 상기 헤드부의 기초를 형성하고, 상기 헤드부의 기초에 상기 구리분말을 용침시켜 모세관력에 의해 상기 구리분말이 상기 헤드부의 기초를 형성하는 상기 합금소재의 틈을 채우면서 상기 헤드부를 형성하고, 상기 헤드부의 기초 일단을 가공하여 상기 결합돌기를 형성하는 용접용 팁의 제조방법. An alloy material mixed with copper powder and tungsten powder is used to form the base of the head part by a powder metallurgy process, and the copper powder is infiltrated on the head part to form the base of the head part by capillary force. Forming the head portion while filling the gap of the alloy material, and processing the base end of the head portion manufacturing method of the welding tip to form the engaging projection.
  13. 청구항 11에 있어서,The method according to claim 11,
    상기 몸체부를 제작하는 단계는,Producing the body portion,
    구리소재를 이용하여 분말야금 공정으로 상기 몸체부의 기초를 형성하고, 상기 몸체부의 기초 일단에 드릴 가공으로 상기 결합홈을 형성하는 용접용 팁의 제조방법. Forming the base of the body portion by a powder metallurgy process using a copper material, the method of manufacturing a welding tip for forming the coupling groove by drilling on the base end of the body portion.
  14. 청구항 12에 있어서,The method according to claim 12,
    상기 헤드부를 제작하는 단계에서는,In the step of manufacturing the head portion,
    상기 분말야금 공정 시, 상기 구리분말은 3 wt% 내지 13 wt%를 포함하며, 상기 텅스텐분말은 55 wt% 내지 85 wt%를 포함하고,In the powder metallurgy process, the copper powder includes 3 wt% to 13 wt%, the tungsten powder includes 55 wt% to 85 wt%,
    상기 구리분말를 용침시킬 때에는 상기 구리분말을 12 wt% 내지 22 wt% 포함하는 용접용 팁의 제조방법.Method for producing a welding tip comprising 12 to 22 wt% of the copper powder when the copper powder is infiltrated.
  15. 구리 크롬 합금소재로 일단에 길이 방향을 따라 오목하게 결합홈이 형성된 몸체부를 제작하는 단계;Manufacturing a body portion having a recessed groove formed in a copper chrome alloy material at one end in a longitudinal direction;
    구리 텅스텐 합금소재로 일단에 상기 결합홈에 끼워지는 결합돌기가 형성된 헤드부를 제작하는 단계;Manufacturing a head portion having a coupling protrusion fitted into the coupling groove at one end of a copper tungsten alloy material;
    상기 결합돌기를 상기 결합홈에 끼워 맞추면서 브레이징 공정으로 접합하여 상기 몸체부와 상기 헤드부를 일체로 형성하는 단계; 및Fitting the coupling protrusion to the coupling groove and brazing to form the body and the head unit integrally; And
    상기 헤드부의 외주면에 라운드 가공을 하는 단계를 포함하는 용접용 팁의 제조방법.The manufacturing method of the tip for welding comprising the step of round processing on the outer peripheral surface of the head portion.
  16. 청구항 15에 있어서,The method according to claim 15,
    상기 헤드부를 제작하는 단계에서는,In the step of manufacturing the head portion,
    구리분말 및 텅스텐분말을 혼합한 합금소재를 이용하여 분말야금 공정으로 상기 헤드부의 기초를 형성하고, 상기 헤드부의 기초에 상기 구리분말을 용침시켜 모세관력에 의해 상기 구리분말이 상기 헤드부의 기초를 형성하는 상기 합금소재의 틈을 채우면서 상기 헤드부를 형성하고, 상기 헤드부의 기초 일단을 가공하여 상기 결합돌기를 형성하는 용접용 팁의 제조방법. An alloy material mixed with copper powder and tungsten powder is used to form the base of the head part by a powder metallurgy process, and the copper powder is infiltrated on the head part to form the base of the head part by capillary force. Forming the head portion while filling the gap of the alloy material, and processing the base end of the head portion manufacturing method of the welding tip to form the engaging projection.
  17. 청구항 15에 있어서,The method according to claim 15,
    상기 결합돌기의 횡단면의 크기는 상기 헤드부 몸체의 횡단면의 크기와 동일하거나 더 작게 형성되는 용접용 팁의 제조방법.The size of the cross section of the coupling protrusion is the manufacturing method of the tip for welding is formed equal to or smaller than the size of the cross section of the head body.
  18. 청구항 16에 있어서,The method according to claim 16,
    상기 헤드부를 제작하는 단계에서는,In the step of manufacturing the head portion,
    상기 분말야금 공정 시, 상기 구리분말은 3 wt% 내지 13 wt%를 포함하며, 상기 텅스텐분말은 55 wt% 내지 85 wt%를 포함하고,In the powder metallurgy process, the copper powder includes 3 wt% to 13 wt%, the tungsten powder includes 55 wt% to 85 wt%,
    상기 구리분말를 용침시킬 때에는 상기 구리분말을 12 wt% 내지 22 wt% 포함하는 용접용 팁의 제조방법.Method for producing a welding tip comprising 12 to 22 wt% of the copper powder when the copper powder is infiltrated.
  19. 청구항 15에 있어서,The method according to claim 15,
    상기 라운드 가공을 하는 단계에서는,In the step of performing the round processing,
    상기 헤드부 기초의 타단에는, 상기 헤드부 기초의 타단으로부터 설정 길이만큼 돌출되는 용접돌기를 형성하는 용접용 팁의 제조방법.And a welding protrusion protruding from the other end of the head portion base by a predetermined length at the other end of the head portion base.
PCT/KR2016/001464 2015-02-17 2016-02-15 Welding tip and manufacturing method therefor WO2016133314A1 (en)

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KR20180065627A (en) * 2016-12-08 2018-06-18 정래식 A Ceramic Welding Contact Tip and Method of fabrication the same
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JPH0833983A (en) * 1994-07-21 1996-02-06 Daihen Corp Contact chip for arc welding and its production
KR200333673Y1 (en) * 2003-08-26 2003-11-19 박상녕 A contact tip of torch for welding machine using inert gas
KR100449568B1 (en) * 1995-10-03 2004-11-16 가부시키가이샤 에스엠케이 Contact tip for welding
JP2009090355A (en) * 2007-10-11 2009-04-30 Shinko Kiki Kk Contact tip, and its manufacturing method
JP2009248131A (en) * 2008-04-07 2009-10-29 Nippon Contact Chip Seisakusho:Kk Contact tip and manufacturing method of contact tip

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Publication number Priority date Publication date Assignee Title
JPH0833983A (en) * 1994-07-21 1996-02-06 Daihen Corp Contact chip for arc welding and its production
KR100449568B1 (en) * 1995-10-03 2004-11-16 가부시키가이샤 에스엠케이 Contact tip for welding
KR200333673Y1 (en) * 2003-08-26 2003-11-19 박상녕 A contact tip of torch for welding machine using inert gas
JP2009090355A (en) * 2007-10-11 2009-04-30 Shinko Kiki Kk Contact tip, and its manufacturing method
JP2009248131A (en) * 2008-04-07 2009-10-29 Nippon Contact Chip Seisakusho:Kk Contact tip and manufacturing method of contact tip

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