KR101564689B1 - A GMA Welding Contact Tip having Metal Bushing - Google Patents

A GMA Welding Contact Tip having Metal Bushing Download PDF

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Publication number
KR101564689B1
KR101564689B1 KR1020150087929A KR20150087929A KR101564689B1 KR 101564689 B1 KR101564689 B1 KR 101564689B1 KR 1020150087929 A KR1020150087929 A KR 1020150087929A KR 20150087929 A KR20150087929 A KR 20150087929A KR 101564689 B1 KR101564689 B1 KR 101564689B1
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KR
South Korea
Prior art keywords
tip
welding
bush
copper
arc
Prior art date
Application number
KR1020150087929A
Other languages
Korean (ko)
Inventor
정래식
Original Assignee
정래식
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 정래식 filed Critical 정래식
Priority to KR1020150087929A priority Critical patent/KR101564689B1/en
Priority to PCT/KR2015/008273 priority patent/WO2016208807A1/en
Priority to CN201510497534.4A priority patent/CN105252124A/en
Application granted granted Critical
Publication of KR101564689B1 publication Critical patent/KR101564689B1/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
    • 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
    • B23K9/32—Accessories

Abstract

A gas metal arc welding contact tip having a bushing according to the present invention is mounted on a front end of a gas metal arc welding machine which forms a molten pool by a welding arc created between a wire supplied at a constant speed and a base metal, transmits a welding current to the wire to induce the molten pool, and is formed from a copper material. The gas metal arc welding contact tip having a bushing comprises: a tip body of a copper material mounted on the welding machine; a conductive connection unit formed smaller than an outer circumference of the tip body to be connected to a front surface of the tip body as one unit to conduct electricity; a bushing mounted on a front end of the conductive connection unit and formed from a material stronger than copper in a cylindrical shape to prevent a burn back by a welding arc and expansion of a tip outlet diameter; and a front end reinforcing tip enclosing an outer circumference of the conductive connection unit and the bushing. The metal bushing and the front end reinforcing tip which are prevented from thermal deformation are mounted on the front surface of the tip body of the welding tip to prevent a burn back which attaches welding scatter produced by an arc created during arc welding to the front surface of the welding tip or expansion of the tip outlet diameter caused by wear when welding. Consequently, life of the welding tip is greatly extended; purchase expenses incurred by damage to the welding tip are greatly reduced; electricity is easily supplied and thus a worker can weld for a long period of time; the strength of the welding tip of a copper material is reinforced and thus the welding tip can be used for a long period of time; and a small space in the welding tip is secured and thermal deformation by heat is reduced to improve safety.

Description

[0001] The present invention relates to a contact tip for gas metal arc welding with a bush,

The present invention relates to a contact tip for gas metal arc welding with a bushing for improved lifetime. More particularly, the present invention relates to a contact tip for a gas metal arc welding, It is possible to significantly increase the lifetime of the welding tip by preventing the tip diameter of the welding wire from being widened due to wear of the welding wire, to greatly reduce the purchase cost due to the damage of the welding tip, The present invention relates to a contact tip for gas metal arc welding having a bush which can be used for a long time and which can be used for a long time by reinforcing the strength of a welding tip made of a copper material.

In general, gas metal arc welding using a wire as a base material uses a molten pool which is melted by a welding arc generated between the tip of a welding wire and a base material to be supplied.

In order to perform stable welding in such gas metal arc welding, it is required to be transferred to the wire using a contact tip supplied from a welding power source.

The contact tip is to direct the wire to a position to be welded, while transferring the welding current to the wire.

However, if the contact tip is used for a long period of time, such a function is deteriorated and the tip must be replaced. Recently, in order to improve the productivity in the welding industry, efforts to improve the life of the contact tip are urgently required.

A major factor determining the service life of the contact tip is an increase in tip exit diameter due to tip wear due to burn back caused by welding instability of the welding spatter on the front of the contact tip due to instability of the arc, Much effort is required to keep the tip life long with the same problem.

CO2 welding is mainly used for the gas metal arc welding using the contact tip as described above. CO2 welding releases CO 2 gas, which is an inert gas, to cut off the welding part from the atmosphere, transfer the welding wire into the electrode, Thereby generating a discharge phenomenon with the welding base material.

Especially, CO2 welding with automation system using robots is mainly used for the production of automobile parts in large quantities.

Fig. 4 is an overall configuration diagram of a general carbon dioxide gas welding machine in which a welding torch 2 is mounted on the tip of an arm 4 of a welding torch and welded to the inside of the welding torch 2, And the CO 2 gas supplied from the CO2 tank is discharged toward the welding portion 6 through the space portion 5 between the welding tip 1 and the welding torch 2 so that the welding portion 6 It is blocked by the atmosphere.

However, since the conventional contact tip 1 for a carbon dioxide gas welding machine is formed of an integral copper material so as to be energized, overheating of the contact tip occurs when a predetermined time elapses, There is a problem that not only replacement but also excessive replacement cost is incurred.

In order to solve the above problem, the applicant of the present invention developed a patented "Carbon Welding Tip with Ceramic Application" (Registration No. 10-1214902).

5, the welding torch 2 is mounted on the tip of the arm 4 of the welding, and the wire 3 is mounted inside the welding torch 2, And a fastening part 200 is provided at the tip of the body 100 of the welding tip 1. The ceramic tip of a ceramic material is attached to the fastening part 200 The ceramic tip 300 attached to the tip of the body 100 of the welding tip 1 may be welded with a copper material 300. In this case, The welding with the tip 1 can not be conducted, and the welding wire 3 is short-circuited, which makes welding impossible.

It is an object of the present invention to provide a contact tip for gas metal arc welding with a bush according to the present invention, It is possible to improve the life of the welding tip by preventing the welding spatter caused by the arc generated in the arc welding from being adhered to the front surface of the welding tip or by expanding the tip outlet diameter due to wear during welding, , The purchase cost due to the damage of the welding tip can be greatly reduced and the welding can be safely conducted for a long time with ease and the strength of the welding tip made of a copper material is reinforced and can be used for a long time, And to provide a contact tip which can be securely welded.

According to the present invention, there is provided a contact tip for a gas metal arc welding with a bush according to the present invention, wherein a wire is supplied at a constant speed to form a molten pool by a welding arc generated between the base metals A contact tip of copper, which is mounted on the tip of a gas metal arc welder and guides a welding current to the wire to induce a molten pool, is provided with a prefabricated screw on one side to be mounted on the welder, A tip body made of a copper material and having a perforation hole formed so as to be perforated; Shaped conductive connection part integrally connected to the front end of the tip body to be energized so as to be narrower than the outer circumferential part of the tip body and having a center punched to supply a wire to the center; A bush having a strength higher than that of copper formed in a cylindrical shape so as to be positioned at the tip of the energizing connection portion and to have a through hole at the center thereof and to prevent burn back of the welding arc and expansion of the tip outlet diameter; And an end reinforcing tip that surrounds the outer circumferences of the energizing connection portion and the bushing to prevent thermal deformation of the tip body during welding.

The tip end of the tip end reinforcing tip is inserted into the tip end of the tip end reinforcing tip so that the bush is seated so that the bush is seated on the tip end of the energizing connection portion, And a stopping jaw of the stopper is formed.

The bush is formed of a copper alloy material alloyed with copper so as to prevent expansion of a tip outlet diameter while being electrically connected to a team body during welding. The tip end reinforcing tip is formed of a ceramic tip formed of a ceramic material, a metal tip made of stainless steel, tungsten, , A heat-resistant glass tip made of a heat-resistant glass, a heat-resistant fiber tip made of a heat-resistant fiber, and a carbon tip made of a carbon material.

The tip end reinforcing tip is fixed to the energizing connection portion by an adhesive material to prevent thermal deformation, and the energizing washer is seated so that the tip end of the tip end reinforcing tip is easily energized.

The contact tip for a gas metal arc welding having the above-described structure of the present invention having the bush has the following effects.

First, the tip of the tip of the welding tip is plastically pressed with a metal or a copper-alloy bushing stronger than copper, so that the welding scar due to the arc generated during arc welding is attached to the front surface of the welding tip, The life of the welding tip can be greatly improved, the purchase cost due to the damage of the welding tip can be greatly reduced,

Secondly, since the welding wire is electrically connected to the energizing column easily by providing the energizing connection part integrally connected to the entire tip body of the welding tip, the welding can be safely performed for a long time,

Third, by providing a ceramic tip, a metal tip, a refractory glass tip made of refractory glass, a refractory fiber tip, and a carbon tip made of a carbon material, the tip tip is wound around the periphery of the current- It is possible to significantly improve the service life of the welding tip as well as drastically reduce the replacement cost and the purchase cost due to the damage of the welding tip,

Fourthly, a stepped hook is formed at the distal end of the distal end reinforcing tip to prevent the bush from being released,

Sixth, since the metal bush and the tip end reinforcing tip are fixed to the team body with an adhesive, a minute space is secured between the metal bush and the tip end of the team body, thermal deformation of the tip is reduced and heat can be used for a long time. The energization is greatly enhanced and the welding can be conveniently performed.

1 is a schematic view of a welding tip according to an embodiment of the invention;
2 is a perspective view of a welding tip according to an embodiment of the present invention;
3 is an exploded perspective view of a welding tip according to an embodiment of the present invention;
Fig. 4 is a schematic view showing a typical CO2 welding machine. Fig.
5 is a schematic view showing a conventional CO2 ceramic welding tip;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a contact tip for a gas metal arc welding with a bush according to the present invention is formed by welding a wire 3 at a constant speed, A contact tip 4 made of copper and mounted on the tip of a gas metal arc welding machine 1 for forming a welded metal arc welder 1 and for transmitting a welding current to the wire 3 to induce a molten pool. A tip end portion of the tip end portion of the tip end portion of the tip end portion of the tip end portion of the tip end portion of the tip end portion And a tip end reinforcing tip 40 surrounding the outer periphery of the electrification connecting portion 20 and the bush 30.

That is, the tip body 10 is formed of a copper material so that a welding current is transferred to the wire 3, and is formed with an assembly screw on one side to be connected to the welding machine 1, and a through- 11) is formed and is formed into a bullet shape.

The energizing connection unit 20 is formed with a recessed portion 21 at the front end to support the bush 30 from the front surface of the tip body 10 and a tip body 10, and is formed in a circular bar shape with a center punched so that the wire 3 is supplied to the center.

The bush 30 is seated in the recessed portion 21 of the electric connection portion 20 and has a through hole so that the wire 3 is supplied to the center of the bush 30. The arc- back and the tip diameter of the tip are prevented from expanding.

The tip end reinforcing tip 40 surrounds the outer circumferences of the energizing connection portion 20 and the bush 30 so as to prevent thermal deformation of the tip body 10 during welding, and a ceramic tip 40a formed of a ceramic material, , A metal tip 40b made of stainless steel, tungsten or titanium, a heat resistant glass tip 40c made of heat resistant glass, a heat resistant fiber tip 40d made of heat resistant fiber, and a carbon tip 40e made of carbon.

The tip end reinforcing tip 40 is inserted through the insertion hole 41 so as to insert the energizing connection portion 20 therein and is inserted into the distal end of the tip end reinforcing tip 40 so as to prevent the bush 30 from being detached. Shaped stopper 42 is formed.

The tip end reinforcing tip 40 is fixed to the energizing connection portion 20 with an adhesive 43 to prevent thermal deformation.

It is also preferable that the energizing washer 50 be seated on the distal end of the distal end reinforcing tip 40 so as to be easily energized.

Hereinafter, the operation of the contact tip for gas metal arc welding with the bush according to the present invention will be described.

As shown in FIGS. 1 to 3, a contact tip for gas metal arc welding with a bush according to the present invention includes a cylindrical body 10 on a front surface of a tip body 10 mounted on a welding torch 1 at a welding torch 1 A bush 30 having a strength higher than that of copper is seated on the tip of the energizing connection part 20 so as to protect the welding tip of the copper material And the tip end reinforcement tip 40 is seated on the outer side of the energizing connection portion 20 to reinforce the strength of the tip body 10 which weakens at the time of welding.

That is, the tip body 10 is formed of a copper material so that a welding current is transmitted to the wire 3 and is screwed on one side so as to be connected to the welding machine 1, (11) is formed and the front surface is formed into a bullet shape.

The front end of the tip body 10 is provided with a circular bar-shaped energizing connection portion 20 having a center hole formed therein so as to be supplied with a wire 3 at its center. The bush 30, which is seated at the tip end, The tip body 10 is integrally connected to the tip body 10 so as to be energized more narrowly than the outer circumferential portion of the tip body 10 to be constantly energized and stably welded.

The bush 30 is secured to the recessed portion 21 recessed at the front end of the energizing connection portion 20 so that the bush 30 can be safely energized even in a physical impact and can be easily welded and formed of a cylindrical metal material stronger than copper It is possible to prevent the welding spot from being welded to the front surface of the welding tip 1 due to the arc generated in the arc welding and to prevent the tip diameter of the welding tip from expanding due to wear during welding, .

A tip end reinforcing tip 40 that surrounds the outer periphery of the energizing connection portion 20 and the bush 30 is seated to prevent thermal deformation of the welding tip 1 due to high heat generated at the time of welding, So that the bush 30 can be prevented from being detached and used safely.

The tip end reinforcing tip 40 includes a ceramic tip 40a formed of a ceramic material, a metal tip 40b made of a metal material, a heat resistant glass tip 40c made of a heat resistant glass, a heat resistant fiber tip 40d made of a heat resistant fiber, And the carbon tip 40e of the carbon material, it is possible to significantly improve the life of the welding tip by preventing thermal deformation of the welding tip and collapse due to the arc during welding, Can be greatly reduced.

The bush 30 and the tip end reinforcing tip 40 are fixed to the energizing connection portion 20 with the adhesive 43 so that a minute space is secured between the metal bush 10 and the tip end reinforcing tip 40, Thermal deformation due to heat can be prevented in advance.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

One ; Welder 2; Base material
3; Wire 4; Contact tip
10; Tip body 11; Through-hole
20; Energizing connection portion 21; Inlet
30; Reinforcing bush 40; Tip Reinforcement Tip
41; Insertion hole 42; Jaw
43; Adhesive 50; Electrification washer

Claims (7)

Is mounted on the tip of a gas metal arc welder (1) which is supplied with a wire (3) at a constant speed and forms a molten pool by a welding arc generated between the base metals (2) A contact tip (4) made of a copper material for inducing a molten pool,
A tip body 10 made of copper and having a through hole 11 formed at one side thereof so as to be mounted on the welder 1 and perforated so as to supply a wire to the center thereof;
A circular bar-shaped energizing connection part 20 integrally connected to the front end of the tip body 10 to be energized so as to be narrower than the outer circumferential part of the tip body 10 and having a center so as to be supplied with the wire 3, ;
A bush 30 having a strength higher than that of copper formed in a cylindrical shape so as to prevent the burn back of the welding arc and the tip diameter of the tip from being enlarged due to the through hole being pierced at the center of the electric connection portion 20, ;
And a tip end reinforcing tip (40) surrounding the outer periphery of the energizing connection portion (20) and the bush (30) to prevent thermal deformation of the tip body (10) during welding,
Wherein the bush seating part (21) is inserted into the tip of the current connection part (20) so that the bush (30) is seated.
delete The method according to claim 1,
The tip end reinforcing tip 40 is inserted through the insertion hole 41 so that the energizing connection portion 20 is inserted therein and the tip end of the tip end reinforcing tip 40 is inserted into the tip end of the tip end reinforcing tip 40, And a stopper (42) is formed on the bush.
The method according to claim 1,
Wherein the bush (30) is formed of a copper or alloyed copper alloy material so as to prevent the tip exit aperture from being expanded while being electrically connected to the team body (10) during welding.
The method according to claim 1 or 3,
The tip end reinforcing tip 40 includes a ceramic tip 40a formed of a ceramic material, a metal tip 40b made of stainless steel, tungsten, or titanium, a heat resistant glass tip 40c made of a heat resistant glass, a heat resistant fiber tip 40d and a carbon tip 40e made of a carbon material.
The method according to claim 1,
Wherein the tip end reinforcing tip (40) is fixed to the current connection part (20) by an adhesive (43) to prevent thermal deformation.
delete
KR1020150087929A 2015-06-20 2015-06-20 A GMA Welding Contact Tip having Metal Bushing KR101564689B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020150087929A KR101564689B1 (en) 2015-06-20 2015-06-20 A GMA Welding Contact Tip having Metal Bushing
PCT/KR2015/008273 WO2016208807A1 (en) 2015-06-20 2015-08-07 Contact tip for gas metal arc welding provided with bush
CN201510497534.4A CN105252124A (en) 2015-06-20 2015-08-13 GMA welding contact tip having bushing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150087929A KR101564689B1 (en) 2015-06-20 2015-06-20 A GMA Welding Contact Tip having Metal Bushing

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KR101564689B1 true KR101564689B1 (en) 2015-11-04

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KR (1) KR101564689B1 (en)
CN (1) CN105252124A (en)
WO (1) WO2016208807A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101669406B1 (en) * 2016-01-21 2016-10-31 정래식 A Ceramic Welding Contact Tip prevented burn back
KR101706062B1 (en) * 2016-06-03 2017-02-16 정래식 A Gas Welding Contact Tip having Corbon-bar prevented Specter

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN106312270A (en) * 2016-11-14 2017-01-11 江苏阿斯美特精工科技有限公司 Coaxial hollow tungsten electrode TIG device and welding gun thereof, using method and application
CN109202235A (en) * 2018-11-01 2019-01-15 南通航运职业技术学院 Welding gun conductive nozzle air nozzle anti-splashing layer

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101669406B1 (en) * 2016-01-21 2016-10-31 정래식 A Ceramic Welding Contact Tip prevented burn back
KR101706062B1 (en) * 2016-06-03 2017-02-16 정래식 A Gas Welding Contact Tip having Corbon-bar prevented Specter

Also Published As

Publication number Publication date
WO2016208807A1 (en) 2016-12-29
CN105252124A (en) 2016-01-20

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