Stainless steel storage tanks are more important than ever because of their durability and almost no maintenance surfaces. In the early days, the use of stainless steel in architecture was limited to certain occasions, that is, in the past it was thought that there was no suitable material. Architects are looking for a new material with a special function. In fact, many such occasions, stainless steel has been used for a long time and its effect has been through the long-term continuous washing of stainless steel, so that manufacturers believe that stainless steel materials for outdoor occasions even under the premise of high corrosive gas also does not erode.

There are many welding processes for stainless steel. However, in the production of stainless steel tanks, commonly used is argon arc welding, usually manual welding. In argon arc welding, we need small current, fast welding speed and short arc narrow pass welding, so that the temperature between the control layer is controlled below 100 degrees, of course, the welding materials used should match, otherwise it will affect the welding effect.

In the production of stainless steel storage tank, welding is a very important step, which is related to the product quality and use effect of storage tank. However, welding deformation often occurs in the actual production, which is difficult, so is there a way to control the welding deformation?

The difficulty of stainless steel tank construction is the control of welding deformation. In the construction process of storage tank, due to precast accuracy, assembly error and thermal expansion and cold contraction during welding, storage tank will produce different degrees of deformation. The deformation is mainly welding deformation. Welding deformation is caused by the rapid expansion of the weld by high temperature and then the contraction and bending of the weld caused by cooling.

The welding deformation of stainless steel storage tank can be controlled by small line energy welding, reasonable arrangement of welding sequence, the principle of anti-deformation, rigid fixation of fixture and small hammer hammer welding seam after welding.

Stainless steel storage tank production before welding must ensure that all kinds of pollution may make the weld metal carburization. The surface of 20mm (including groove surface) on both sides of the weldment to be welded shall be thoroughly cleaned without any grease, stains, paint marks, oxide scale and other impurities. Usually with acetone or alcohol to scrub, if necessary, also need to be polished first. If the cleaning is not clean, these organic substances will decompose and burn into gas under the action of high temperature arc, causing porosity and carburization of weld metal, and then reducing the corrosion resistance of welded joints.

Jiangmen jin li nitrogen machinery co., LTD is a chemical machinery manufacturing enterprises, the company has a history of more than 30 years fabrication of pressure vessels, has a sound quality assurance system and a technical all staff team of workers, technicians, in the equipment in chemical industry, fine chemical industry, environmental protection, biological pharmacy, food, oil refining, paint, paint, glue, Machinery processing and other industries.

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