What’s the Problems and Solutions for Production of Flanges?

Do you know what’s the problems and solutions for production of flanges? We Jetvision share something with you 

In the production and processing of stainless steel flange more common and serious problems, and through manual mechanical polishing can not be well compensated, because this will appear more obvious polishing traces, making the flange surface becomes uneven, affecting the beauty, but also affect the sealing of the flange connection, resulting in the actual use of the flange easily affected by the medium and working conditions and then leakage.

2. Passivation is not Uniform Enough

This is the flange in the grinding and polishing problems that tend to arise. Usually, the grinding and polishing method for flanges is manual polishing. Manual grinding and polishing, pickling passivation treatment is a necessary process, but for a large area of the flange pickling passivation treatment, it is difficult to achieve uniform pickling passivation effect, easy to make the surface of the flange is not uniform, not to mention, manual grinding and polishing will also increase the time spent and auxiliary material costs.

3. Scratches Difficult to Remove

This is titanium flange production in the welding process is prone to the situation, due to flange welding spatter, welding scratches, etc., while generating impurities such as carbon steel debris, making the overall flange in the pickling passivation, and can not be very good to remove those debris adhering to the surface of stainless steel. If you take such a defective flange use, in the environment with corrosive media, corrosion will occur, the flange needs to be replaced to deal with.

How to solve these problems?

1. After completing the selection of the drop material, enter the next process. Different stainless steel workpiece to enter the corresponding specific processing requirements according to the corresponding processing steps.

2. Bending should first be based on the dimensions on the drawing, through the thickness of 304 seamless steel pipe tube to determine the knife slot, tool used in bending, in order to avoid deformation caused when the workpiece and tool collide with each other. The same workpiece, may use a variety of different types of models of the upper die, and the choice of the lower die is also determined by the thickness of the plate.

3. To carry out welding, in order to weld firmly, the pre-pressing time, holding time, maintenance time and resting time should be adjusted in advance, and the bumps should be punched on the workpiece ready to be welded, so that the bumps can make uniform contact with the plate before carrying out the energized welding, which can better keep the heating of each point consistent. In addition, the welding can be done by hitting the bump to determine the corresponding welding position.

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