How to scientifically arrange the production of bridge guardrails? Due to the slow shaping process and fast production speed of spiral steel pipes, shaping is generally not done frequently as it usually takes half a day. However, if production is carried out, it can be completed within this half day30Steel pipes weighing around one ton directly affect production costs. How can production be scientifically and reasonably arranged when the contract volume is large?

　　The production scheduling of spiral steel pipes is generally arranged in ascending order from the smallest to the largest specifications based on the number of contracts. This way, the shaping time can be shortened and the production volume can be increased. If the raw materials in the contract have the same plate width, the spiral steel pipe model with the same plate width should be adjusted first. If the plate widths are the same, the shaping should be done according to the wall thickness of the raw materials closest to that of the line plate. If a single specification of several dozen tons of spiral steel pipe is produced separately, it is generally not produced separately. This is because the adjustment time takes up half a day, and the production time is also half a day. Adding the loss of labor cost, and then excluding the formed parts, tail parts and losses of the spiral steel pipe, the cost of one ton of spiral steel pipe will increase at least200Yuan. At the normal price, the company would lose money.
　　I. Deformation heat treatment

　　High-temperature deformation heat treatment can increase the yield-to-tensile ratio and elastic limit of spiral steel pipes. Improve the comprehensive mechanical properties, fatigue performance and stress relaxation resistance of spiral steel pipes. It can reduce the ductile-brittle transition temperature of steel, decrease the temper brittleness of steel, and has the advantages of simple process and energy conservation.

　　The effect of high-temperature deformation heat treatment on spiral steel pipes is very significant. The specific process is as follows: The heating temperature is920-950℃The deformation during hot rolling is10%-30%The air-cooling time is10-30sOil quenching;Then proceed.400℃The above common tempering or high-temperature rapid tempering.

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　　The company uses high-quality stainless steel and exquisite craftsmanship to ensure there are no weld marks at the interfaces. Its products feature novel designs, elegant craftsmanship, and long-lasting durability. The company has always adhered to the principle of quality first and reputation first. It is equipped with mature production facilities and has strong technical strength, thus ensuring the quality of its products. The company is willing to make unremitting efforts to join hands with our customers to create a win-win situation and provide high-quality products for our partners.