-Prospect analysis of submerged arc welding.

This paper analyzes the prospect of submerged arc welding, and puts forward that with the implementation of the "West-East Gas Transmission Project", the newly-built welded pipe production line will be double-wire.

The development of multi-wire submerged arc welding provides unprecedented development opportunities; The new A-beam production line has increased the proportion of submerged arc welding in the welding machine industry.

Example sharing. At present, there are two big gaps in the performance and intelligence of electronic components in submerged arc welding equipment at home and abroad, but domestic products are valuable.

Grid, after-sales service and other advantages. Domestic submerged arc welding manufacturers should pay attention to adjusting the direction, that is, increasing the scale, developing multi-wire welding and developing narrow gap.

Welding and developing other technologies related to submerged arc welding.

Keywords: submerged arc welding equipment; Development status; influencing factor

abstract

Submerged arc welding is the most commonly used automatic arc welding in industrial production.

Methods, which originated in Huazhong University of Science and Technology, began in the last century of China.

Apply. At present, it is mainly used for welding various steel plate structures. Weldable steel

Types include carbon steel, low alloy steel, stainless steel, heat-resistant steel and composite steel.

Materials, etc. Shipbuilding, boilers, chemical containers, steel structures, bridges, lifting.

It is widely used in machinery and metallurgical machinery manufacturing.

With the development of industry and science and technology, shipbuilding and marine development

Steel structure construction and other industries require to solve the problem of splicing large frames in a large area.

Automatic welding of frame structure: petrochemical industry needs to solve the problem of high and low resistance

Temperature and welding problems of various low-alloy high-strength steels: heavy machinery industry

It is required to solve the splicing problem of large cross-section members. Submerged arc welding for production

The advantages of these fields are high efficiency, good welding quality and good working conditions.

Can be applied and developed. In the current country's western development and western development

What opportunities will submerged arc welding bring in the implementation of the strategy of west-to-east gas transmission?

Join! "# will bring what kind of influence? This is the industry now.

People think the most and talk the most. Talk about my own views on this.

Law.

! Influencing factors of submerged arc welding technology development in China

In the field of welding, submerged arc welding technology is compared with other automatic welding technologies.

It is a relatively mature technology. As an application branch of engineering technology,

Its development is also influenced by social progress, science and technology and engineering technology.

The restriction and influence of development level, national policy and other factors. These factors

The recent impact on this technical field in China is as follows.

With the progress of metallurgical technology, new welding cracks are not easy to appear.

Materials for large-line energy welding are constantly emerging.

At present, the trend of fully pursuing welding automation and efficient welding will spread.

Formed within the framework of unified welding technology. This reduces the need for submerged arc welding.

The use of welding method with large current density and large heat input is limited, which is submerged arc welding.

The application scope of welding is widened, which provides an opportunity. And our country.

The growth of steel consumption (from/kloc-0 to10 million dollars in199); $ "$ () *+,increase

To the expected',,-years of $&; ) "$,) *+) and the maturity of welding technology.

And the application of welding processing.

The scope is expanding in the iron and steel industry and various equipment manufacturing industries, especially

The welding efficiency of key industries such as shipbuilding meets the requirements.

),/,welding mechanization and automation rate requirements to reach 0, 1, which will make buried

With the further development of arc welding, the proportion of submerged arc welding machines will be large.

The amplitude increases.

With the implementation of the national key construction project "west-to-east gas transmission"

A large number of gas pipelines are urgently needed, resulting in a serious shortage of gas pipelines.

Elephant. In order to reverse the situation that such products are completely dependent on imports, various production and operation banks in China

Industry manufacturers have identified double-wire and multi-wire high-speed submerged arc welding, which is spiral.

The manufacturing process of welded pipe and straight welded pipe is simple and the production efficiency is high.

Stable and reliable quality, unlimited specifications, and easy to realize assembly line production.

And other characteristics, so that it has a great market competitive advantage. At the same time, it also gives

Manufacturers in the pipe industry have brought huge economic benefits. North China oilfield steel pipe

Factory double-wire large spiral welded pipe production line and transformation of four-wire welding large straight seam

Ziyang Steel Pipe Factory newly built welded pipe production line and double-wire spiral pipe production line.

Transformation, transformation of double-wire spiral pipe production line in Baoji Steel Pipe Factory, etc.

Spiral welded pipe and straight welded pipe production lines of non-petroleum pipe production enterprises

The new structure provides unprecedented development for the development of double-wire and multi-wire submerged arc welding.

Opportunity.

At present, all kinds of steel structure buildings are characterized by short production and installation period and resistance.

Strong earthquake resistance, diverse shapes, beautiful appearance, convenient dismantling (suitable for small steel structures

Architecture), can be recycled, protect resources and environment, can take root.

According to needs, reasonable use of space, small section and light weight.

The proportion of good ductility in new projects and new engineering construction

It's getting bigger. Double-section steel and box members as basic units of steel structure

The demand for beams has increased sharply. At present, China is a medium-sized city every year.

The demand for steel structure is estimated to be around USD 3-1 10,000+; Two-stage steel bar

The annual output of the production line is only 4 *, *, *, *+,so invest in type 2.

The prospect of steel production line is very optimistic. It can be predicted that in the next 30 years,

Section steel (box beam) and its related products will have great development prospects. such

Under the new situation, many manufacturers have seized this market opportunity and competed with each other.

Two steel production lines on the ground. Submerged arc welding is characterized by good weld surface quality,

The characteristic of high production efficiency has become the main welding method of this kind of special equipment.

Connection process method. 2. In the welding industry, the heat of section steel for submerged arc welding has increased.

A larger proportional share.

In recent years, with the development of electronic technology, new welding equipment does not

Broken, especially the continuous maturity of 567 "inverter technology, for welding.

The field of equipment has caused quite a shock. Of course, 567 "inverter power supply.

Its capacity is limited by the component itself, only in the range of several hundred amperes.

Inside. This will be a new revolution of manual welding power supply, but for submerged arc welding