The application of information

I. Name: Narrow gap TIG welding system

Purpose: Full position or fixed position welding of thick - wall pipe with narrow gap

Application Industry: Field installation of petrochemical, nuclear power and thick wall pipelines

Features:

The welding torch is mainly composed of welding gun Angle swing parts, welding gun fixed parts, back protection air cover parts, air cover lifting parts, wire feeding bracket parts, front and rear camera monitoring system.

Process features:

Suitable for narrow groove welding over 9MM;

The tungsten swing technique is applied to make both sides of the groove fully fused.

High cladding efficiency, low heat input;

Unique five-way water cooling design, high temporary load rate;

Double gas protection, effectively ensure the weld surface forming quality;

Easy replacement and maintenance of wearing parts of welding gun, less consumption of wearing parts, low cost of use;

Suitable for carbon steel, stainless steel, nickel base alloy, titanium alloy and other materials;

Can realize a variety of welding methods such as horizontal welding, vertical welding and full position;

Second, name: fixed position MIG narrow gap

Application: Suitable for narrow gap butt welding in all structural industries and fields where medium thick wall plates and pipes are used.

Application industry: oil pipeline, oil drilling machinery, coal mining machinery, boiler, pressure vessel, electric power industry thick wall pipeline, ocean structure, railway steel structure and other fields.

Features:

According to the groove width adjustment welding wire swing width technology, the groove on both sides of the full fusion, high melting efficiency, low heat input, welding deformation is relatively small, high welding reliability. With the large-scale welding structure, in the pressure vessel, construction machinery, coal machinery, shipbuilding and offshore platform industries using 50-150mm thickness plate has become more and more, its welding has become a concern. Using the traditional way to open large breaks, not only the groove is difficult, welding speed is slow, but also the stress after welding, deformation is large, so the production efficiency is low. If the narrow-gap welding process is adopted, not only the groove cross-sectional area can be greatly reduced and the filling amount of weld metal can be greatly reduced, but also the efficient welding can be achieved with relatively small line energy and the relatively ideal welding joint performance can be obtained. Therefore, it is widely used in large and important structures abroad. Narrow-gap welding processes include N-GTAW, N-GMAW and N-SAW. At present, N-SAW and N-GTAW are widely used in boilers and pressure vessels in China. N-saw requires flux. In addition, to achieve good side wall fusion, because the thick welding wire cannot achieve swing, it requires two welding processes, and the equipment process is relatively complex. N-tig welding efficiency is slow; The narrow gap N-GMAW is in between the two, which can not only swing the welding wire, solve the single side wall fusion, but also improve the welding efficiency. At the same time, the equipment is relatively simple, so the application scenario of narrow gap MAG welding technology is broad, and the foreign narrow gap 70% of the application of N-GMAW.

Huaheng narrow gap MAG welding technology includes welding equipment and process, which can be successfully applied to the longitudinal ring seam structure welding of the workpiece with wall thickness below 200mm and groove gap between 6.5-14mm. The equipment includes high stability digital pulse welding power supply, narrow gap swing mechanism and controller, narrow gap welding gun and related equipment. The process includes different wall thickness groove forms, welding parameters and so on.