Quotation from Stainless Steel Coil Company/Coil Factory for Water Tank

Quotation from Stainless Steel Coil Company/Coil Factory for Water Tank

Customized stainless steel coil manufacturer, how much does stainless steel coil cost per ton? Stainless steel coil factory, stainless steel coil company specializes in processing various bent pipes, spiral coils, mosquito coils, stainless steel heating coils, heat exchanger coils, combination bent pipes, double spiral coils, right angle bent pipes, snake shaped bent pipes, semi-circular bent pipes, special-shaped bent pipes, special bent pipes, stainless steel coils, and combination coils. Double layer coil, multi-layer coil, combination coil, heat exchange coil, U-shaped bend, semi-circular tube, mosquito coil, special-shaped bend, and head coil.

Quotation from Stainless Steel Coil Company/Coil Factory for Water Tank

What are the characteristics of medium frequency bent pipes

1. The intermediate frequency bending tube adopts a vertical external characteristic power supply, and uses positive polarity (welding wire connected to negative pole) for DC.

2. Medium frequency bent pipes are generally suitable for welding thin plates below 6mm, with the characteristics of beautiful weld formation and small welding deformation

3. The protective gas is argon with a purity of 99.99%. When the welding current is 50~50A, the argon flow rate is 8~0L/min. When the current is 50~250A, the argon flow rate is 2~5L/min.

4. Welding arc length: When welding ordinary steel, it is best to use 2-4mm, while when welding stainless steel, it is best to use~3mm. If it is too long, the protection effect will be poor.

5. In order to prevent the occurrence of welding pores, if there is rust, oil stains, etc. at the welding site, it must be cleaned thoroughly.

6. The length of the tungsten electrode protruding from the gas nozzle is preferably 4-5mm. In areas with poor shielding properties such as corner welding, it is 2-3mm, and in areas with deep grooves, it is 5-6mm. The distance from the nozzle to the working position generally does not exceed 5mm.

7. When the intermediate frequency bend pipe is connected for base treatment, gas protection should also be implemented on the back to prevent oxidation of the bottom weld bead.

8. Windproof and ventilation. In windy areas, please take measures to block the net, while indoors, appropriate ventilation measures should be taken.

9. In order to protect the welding pool well with argon gas and facilitate welding operations, the center line of the tungsten electrode should generally maintain an angle of 80-85 ° with the workpiece at the welding point, and the angle between the filler wire and the surface of the workpiece should be as small as possible, generally around 0 °.

Quality of stainless steel coil

1. When stainless steel coil is bent, the outer arm wall of the neutral layer of the tube is subjected to tensile stress and thinning under the action of external force distance M, while the inner side is subjected to compressive stress. The thickness increases due to the action, and the combined forces N1 and N2 cause a change in the cross-section of the tube. Based on this factor, the main reason for the decline in the quality of bent pipes is RX and SX. Therefore, GBJ235-82 specifies the RX values and outer thinning amounts for various pressure levels to control the values of RX and SX and ensure quality.

2. When bending stainless steel coil pipes, the outer side of the material is subjected to tension, while the inner side is subjected to compression. The position of the neutral axis is different from the bending method. In the top bending (compression bending) operation, the neutral axis is located about 1/3 of the outer wall, and in the rotary bending (return bending) operation, the neutral axis is located 2/3 of the outer wall. Therefore, it is beneficial to use the rotary bending method when bending thin-walled pipelines.

3. The accuracy of stainless steel coils is also one of the factors affecting the quality of bent pipes. When manufacturing bent tires, in addition to controlling the specifications and dimensions within a certain tolerance range, users are also required to choose the corresponding bent tire according to the bent pipe diameter during use.

4. The bendability and surface corrosion of stainless steel coil pipes themselves may also affect the quality of bent pipes. During on-site construction, the operator also needs to understand the material, processing performance, and surface corrosion of the processed pipeline to make production judgments.