Welding works for metal structures: description of welding types and average cost

When there is a need for welding, in the first place, the question arises about the cost of this service. Prices for the use of welding services may vary depending on the type and volume of the order, and can be calculated from the length of the seam.

Of course, it is possible to carry out welding process and independently, but in this case there is a significantly reduced quality. Low quality welds are detrimental, as this can lead to structural instability or depressurization when it comes to pipelines.

Introduction

It is best to seek the help of welders, who provide private services, but we must not forget, that his qualification must be confirmed by the category.

You can also choose private companies, which provide a variety of welding services. Firms, which provide services for welding of metal structures, having a high reputation, qualified specialists, who know how to work with modern equipment and reasonable prices.

Types of welding

Methods of welding, this is a very important point, which should be taken into account when ordering the service. In particular, welding differs from each other in the degree of complexity and use of different types of energy. Each type of welding has its nuances, advantages in quality and application on various objects. Example, it is possible to allocate arc welding, which is most often used in production. Gas welding, usually, used on private sites.

Semi-automatic welding

Special electrodes are used when working with metals by means of arc welding. This is material, which in its structure consists of a wire covered with flux. The flux during welding melts and forms in the area of ​​the straightened metal, gas shell, which ultimately prevents the oxidation of the metal. in addition, special additives in the flux help to strengthen the weld. A similar principle of welding is used in the semi-automatic process.

Semiautomatic welding machine, differs primarily in the use of special wire, which is automatically fed into the work area. The wire is automatically unwound from the drum, moreover, unlike the electrode, it is not covered with flux. Protection of seams is carried out by receipt of any inert gas. Carbon dioxide is most often used, which protects the seams from oxidation. The use of this type of welding significantly improves the quality, and as a result seams do not demand, mechanical cleaning.

The cost of welding.

1. The arc method is worth it 10-15 UAH for 1 see seam.
2. The work of the semiautomatic device is worth it 15-25 UAH for 1 see seam.

Spot and multi-point welding

Spot welding is rarely used in private construction due to its high cost. Naturally, such prices for welding of metal structures are due to the high quality and complexity of the work.

Unlike the arc method, in spot welding several electrodes are used, which can melt and fasten metal alternately or simultaneously. Simultaneous creation of seams on all site of welding is called multipoint.

The only difference here is, that in the point model the current is applied gradually to one or two electrodes. In multi-point welding process, usually, current is supplied by an energy distributor to all electrodes at once. Overlay seams on metal structures in a similar way, requires special equipment and a highly qualified specialist.

Spot welding combines two processes at once. Almost simultaneously, the metal melts and increases the pressure. As the pressure increases, the hardness of the metal is overcome, due to which the necessary deformation at all necessary points of creation of a seam turns out. Using this process allows you to get quality and reliable seams, which in the end do not even require mechanical stripping.

The cost of spot welding varies from 40 to 50 rubles. When using a multipoint process, prices are doubled.