Sleeve for welding semiautomatic device: device

Entering the market of compact devices for semi-automatic welding and their high popularity contributed to the expansion of welding applications in almost all spheres of human life. So, by means of semiautomatic various car body repairs of cars are carried out. Welding is also used in industrial or private construction. With their application, various metal structures are produced. In the process of working with the device, some of the components have the property to wear out and become unusable. One of such components of this equipment is a sleeve for a welding semi-automatic machine . During operation, the elements are subject to various external factors:

• High temperatures during welding.
• Drops of molten metal.
• Scratches.
• Various inflections.

Inside the sleeve, its guides are rubbed with a wire, which is fed to the welding zone. Naturally, all these influences adversely affect the device and disable it. Often, the sleeve for a semi-automatic welding machine breaks down first.

Types

Modern manufacturers today offer two types of welding sleeves. It can be directly the sleeve or the burner. In this case, the appearance of these products does not differ from each other. Both these names denote the same accessory.

So, the welding torch-sleeve of semiautomatic devices consists of three basic elements. This is directly the burner, the sleeve, and also the connectors for their connection. Unfortunately, now it is difficult to find sleeves separately. But you can buy almost all the components of the structure or find analogs.

Device

So, the sleeve for the welding semiautomatic device consists of a rubber casing. Under it is a fairly complex stuffing. Since for semi-automatic welding special wire is required, in the welding sleeve there is a complex system. It is a guide channel that feeds the spiral. Also inside can be a tube of Teflon. The firms that produce components for welding, can be a different device of the sleeve of the welding semi-automatic. Also for the work process, a shielding gas is necessary. A separate hose is used to feed it. Depending on which brand and model the machine is, the process of transporting and feeding the wire and gas to the working area may be different. Together with co-axial there is a parallel type.

Inside the sleeve, there is also a positive power cable from the welding to the transformer. This cord goes to the current tip located on the burner. There are also two thin wires. They are connected to the start button.

Appointment

A sleeve for a semi-automatic welding machine is necessary for feeding a wire, by means of which the process of welding the metal is carried out. The component is fed via a transport mechanism. Also, the hose is designed to provide the burner with inert or active gases. This allows to protect the welding seam from the formation of oxidation. The power cable passes through the sleeve. It serves to power the welding arc; The second end goes to the start button.

Consumables

The sleeve for a semi-automatic welding machine is an expendable material, more precisely, a spiral, which is responsible for feeding the wire. Also this part is called the feed channel, the guide element. As a material for its production, wire or a strip of steel is used. However, the latter can be made of plastic. The wire or tape is wound in the form of a spiral. Then it is covered from the outside with insulating materials.

Due to the fact that the wire constantly rubs against the inner surface of the sleeve, the inner elements are actively worn out. This is also facilitated by dust and dirt falling inside with the wire. Particularly active wear affects the channel, if the work is carried out by aluminum wire. For work with aluminum material, teflon tubes are used.

These guide channels are "consumables", which must be periodically changed. A gas hose is also subject to replacement. He is prone to tears.

Reasons for an element to fail

If the sleeve of the semi-automatic welding machine with a mechanical valve has failed or the device has been mechanically damaged, the part requires repair or replacement. In order not to spend extra money, first you need to diagnose the node. If the welding seam turns out to be of poor quality, then it directly depends on the condition of the sleeve. A bad seam can be caused by jamming the wire inside the element or by an insufficient amount of gas. Both reasons are the basis for replacing the sleeve separately, or together with the burner. The latter option is rarely used. More often buy one new element, or make a welding sleeve for a semi-automatic machine with their own hands.

Market offers and prices

The cost of the parts from the kit together with the burner starts from one and a half thousand rubles. The most expensive device costs about 12 thousand. Channels for transporting wire will cost a maximum of 200-400 rubles. If you need a Teflon tube, it costs a maximum of 500-1000 rubles. Sleeves of domestic production can be purchased for 20-40 rubles. For each running meter. The diameter of this hose is 6.3 mm. Therefore, it is not necessary to purchase a sleeve. From the purchased consumables it is possible to make an excellent homemade sleeve for a semi-automatic welding machine.

How to choose

When buying kits for semi-automatic welding, it is necessary to consider several important factors. So, you need to know the model of the device and its functions. It can be work in inert or active gases, argon-arc welding or work with a flux-cored wire. It is necessary to consider how the connecting elements are arranged. The most popular option is KZ-2. The ergonomic characteristics of the burner are also important. The handle should sit comfortably in the hand, and the button should be of sufficient size.

When choosing it is worth paying attention to the diameter of the wire for which this or that device is intended. With ordinary welding devices use wire with a diameter of 0.6 to 1.6 mm. But specific devices can work with narrower ranges of sizes - for example, 0.2-0.6 mm. An important point in choosing - the maximum current and thickness of the sleeve. Optimal for any welding work - 3 mm. But on the sale you can find products and longer.

Choice of gas hose

If it is necessary to replace not only the wire feed hose, but also the hose, it is important when choosing to pay attention to the marking and color of the element. For gases such as argon and helium, elements designed for pressures of up to 0.6 MPa are used. Domestic products should be marked in accordance with GOST 9956-75. The oxygen hose must comply with the 3 rd class. The permissible operating pressures of this element are up to 2 MPa. This hose is blue.

Conclusion

This is all you need to know about welding sleeves, their replacement, selection and purchase. Home masters often replace branded hoses with shirts from bicycle cables or from the speedometer cable.