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TW400 Gas Cooled Mig Welding Torch Welding Gun - Changzhou Inwelt

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TW400 Gas Cooled Mig Welding Torch is highly customized, the parts that can be customized include: cable length, cable size, handle label and torch handle .

The product adopts a humanized design, with a non-slip function of the product handle, with an additional wrench .

Trigger aging test 10000 times.

OEM package.

You can purchase circle cutting accessories and other accessory packages for an additional fee.
  • TW400
  • Black ,White ,Pure Color,Different decals ,Oem Acceptable
  • 60% 300Amp CO2 ,250Amp MIX
  • 3m 4m 6m
  • Gas Cooled
  • undefined


TW400 Gas Cooled Mig Welding Torch

TW400 is a kind of Mig Welding Torch (Gas cooled), the ergonomic design and grip handle make welding more comfortable. The switch change system makes application easy, also potentiometer remote control is provided.

TW400 Features & Benefits:

»The product is highly customized, the parts that can be customized include: cable length, cable size, handle label and torch handle

»The product adopts a humanized design, with a non-slip function of the product handle, with an additional wrench

»Trigger aging test 10000 times

»OEM package

»You can purchase circle cutting accessories and other accessory packages for an additional fee

Technical Data:

Cooling Gas Cooled wire size Φ0.8-2.0mm
Duty 60% DC 400Amp CO2 ,350Amp MIX Package OPP Bag + 1Set/Box
Switches Single/Double/Four/Poti Length 3m/4m/6m
Certificate CE & Rohs Gas nozzle Φ16 mm
Position Code Ref. Description
1 UDT0602 24A-62 Gas nozzle 0 16 ;喷嘴 016mm
2 IJDL0697 34A Insulator;绝缘筒
3 IJDV0010-12 14-116 Contact tip 1.2/ 1/4-28X37.4;导电嘴 1.2/ 1/4-28X37.4
4 IJDG0081 54A Diffuser;分流器
5 IJDA0600-01
5 Torch head 60GR/TW4/64J-60/Nickel-plated outer tube;枪颈 60GR/TW4/64J-60/镀镣外管
6 IJDW0704 84A MIG handle with screw;MIG手柄带螺丝
7 IJIR0092
7 Trigger Kit/TW;开关套件/TW
8 IJIK0788
Joint for MIG handle;MIG 手柄用球头
9 IJGU0887-02
Spring for cable support/Zin/Long/TW;电缆支撑用弹簧/镀白锌/加长/TW
10 IJD00919
Cable assembly/3M;电缆组/3米
11 IJGU0835
Spring for cable support/Blue and white zinc plating;电缆支撑用弹簧/镀蓝白锌
12 IJIK0883
Back box with closing ring;后把套/含锁紧环
13 IJGU0074 EA0018 Screw M4x6;螺丝 M4x6
14 IJAI7062
Continental adapter / Miller M10X1;欧式转换接头幽勒SM10X1
15 IJUP0003
Connetecing adaptor TW1-4;转接头连杆/TW1-4
16 IJJD0010-03
Steel liner 3.4M 0.9-1.2/TW;钢送丝管 3.4米 0.9-1.2/TW
Complete Torch

IJDU5911 410-3545 TW4 Torch 3m;TW4枪 3m

IJDU5917 412-3545 TW4 Torch 4m;TW4枪 4m

IJDU5918 415-3545 TW4 Torch 4.6m;TW4枪 4.6m

IJDU5926 X410-3545 TW4 Torch 3m euro adaptor;TW4枪 3m 欧式中央插头

IJDU5922 X412-3545 Tw4 Torch 4.6m euro adaptor;TW4枪 4.6m 欧式中央插头

IJDU5923 X415-3545 Tw4 Torch 3m Miller adaptor;TW4枪 3m 米勒后接口

IJDU5924 M410-3545 Tw4 Torch 4m Miller adaptor;TW4枪 4m 米勒后接口

IJDU5925 M412-3545 Tw4 Torch 4.6m Miller adaptor;TW4枪 4.6m 米勒后接口

IJDU5931 M415-3545 TW4 Torch 4m euro adaptor;TW4枪 4m 欧式中央插头

About Mig Welding:

⒈ Like TIG welding, it can weld almost all metals, especially suitable for welding aluminum and aluminum alloys, copper and copper alloys, stainless steel and other materials. There is almost no oxidation burning loss during the welding process, only a small amount of evaporation loss, and the metallurgical process is relatively simple. 

⒉ high labor productivity 

⒊MIG welding can be DC reversed, welding aluminum, magnesium and other metals has a good cathode atomization effect, which can effectively remove the oxide film and improve the welding quality of the joint. 

⒋Do not use tungsten electrode, the cost is lower than TIG welding; it is possible to replace TIG welding. 

⒌When MIG welding aluminum and aluminum alloys, the sub-jet droplet transfer method can be used to improve the quality of the welded joints. 

⒍Since argon is an inert gas and does not chemically react with any substances, it is more sensitive to oil stains and rust on the surface of the welding wire and base metal, and it is easy to generate pores. The welding wire and workpiece must be carefully cleaned before welding. 

⒊MIG welding droplet transfer 

Droplet transfer refers to the whole process in which the molten metal at the end of the welding wire or electrode forms a droplet under the action of arc heat, and is detached from the end of the welding wire and transferred to the welding pool under the action of various forces. It is directly related to the stability of the welding process, weld formation, spatter size, etc. 

⒊1. The force affecting the transfer of molten droplets The droplet formed by the molten metal at the end of the welding wire is affected by various forces, and the influence of various forces on the transfer of the droplet is different. ⒈ Gravity: in the flat welding position, the direction of gravity is the same as the direction of the droplet transfer, which promotes the transition; the overhead welding position hinders the transfer of the droplet 

⒉Surface tension: the main force to maintain the droplet on the wire end, the thinner the wire, the easier the droplet transition. 

⒊Electromagnetic force: The force generated by the magnetic field of the conductor itself is called electromagnetic force, and its axial component force always expands from a small section to a large section. In molten electrode arc welding, the cross-section of the conductor changes when the current passes through the wire-droplet-electrode spot, and the direction of the electromagnetic force also changes. At the same time, the high current density at the spot will cause the metal to evaporate strongly, and will also have a great reaction force on the surface of the molten metal. The effect of electromagnetic force on droplet transfer depends on the arc shape. 

⒋Plasma flow force: Under the contraction of electromagnetic force, the hydrostatic pressure generated by the arc plasma in the direction of the arc axis is inversely proportional to the cross-sectional area of the arc column, that is, it gradually decreases from the end of the welding wire to the surface of the molten pool. Favorable factors to promote droplet transfer. 

⒌ Spot pressure 

⒊2. Droplet transfer characteristics of MIG welding In MIG welding and MAG welding, short-circuit transfer and jet transfer are mainly used for droplet transfer. Short-circuit welding is used for high-speed welding and all-position welding of thin plates, and jet transfer is used for horizontal butt and fillet welding of medium and thick plates. 

In MIG welding, DC reverse connection is basically used. Because the fine jet transition can be achieved in the reverse connection, and the positive ions hit the droplet in the positive connection, which produces a large spot pressure to hinder the droplet transition, so that the normal connection is basically an irregular droplet transition. Alternating current is not suitable for MIG welding because the melting of the wire is not equal on each half-circle. 

When using MIG welding to weld aluminum and aluminum alloys, because aluminum is easy to oxidize, in order to ensure the protection effect, the arc length cannot be too long during welding, so we cannot use the jet transition method with large current and long arc length. If the selected current is greater than the critical current, and the arc length is controlled between the jet transition and the short-circuit transition, a sub-jet transition is formed. 

MIG welding is now widely used for welding aluminum and aluminum alloy workpieces.

Application Areas:

» General engineering

» Construction industries

» Power cycle

» Railway industries

» Heavy duty industry

Our Catalog:



Q1: Can I have a sample for testing?

A: Yes, we can support sample. The sample will be charged reasonably according to the negotiation between us.

Q2: Can I add my logo on the boxes/cartons?

A: Yes, we have a R&D capability and professional & efficient team, OEM and ODM are available from us.

Q3: What are the benefits of being a distributor ?

A: Special discount Marketing protection.

Q4: How can you control the quality of products?

A: Yes, we have engineers ready to assist customers with technical support problems, any issues that may arise during the quoting or installation process, as well as aftermarket support.

Q5: Can we mix items in full container?

A: Yes. We ship our products in bulk, usually 40 Feet High Cube Containers, but 20 feet containers are also acceptable.

Q6: Can I have a visit to your factory before the order?

A: Sure, welcome your visit to our factory.