Parallel extrusion automatic coiling production method of stainless steel profile tube

Abstract

The invention discloses a production method for parallel extrusion and automatic coiling of stainless steel profile pipes. The production device used in the production method includes a main frame, and a lower extrusion die is arranged inside the main frame, and the bottom of the lower extrusion die is installed There is a pair of first air cylinders, the first air cylinders are arranged on the main frame, the driving ends of the two first air cylinders are fixedly connected with the first drive shafts, and the two first drive shafts are fixed with the lower extrusion die connection, the main frame is also equipped with a fixed die, both ends of the fixed die are fixedly connected to the inner wall of the main frame, and an upper extrusion die is symmetrically installed above the lower extrusion die. The present invention can realize the overall extrusion molding of the steel plate through two extrusions, and the two extrusion processes are related to each other, and can be extruded again under the premise of not moving the basic position, which can ensure a good extrusion effect And more precise radian, reduce the steps of extrusion, and simultaneously ensure the effect of extrusion and rolling.

Description

technical field [0001] The invention relates to the technical field of production of stainless steel profile pipes, in particular to a parallel extrusion automatic coiling production method of stainless steel profile pipes. Background technique [0002] Steel pipe is a steel with a hollow section whose length is much longer than the diameter or circumference. According to the cross-sectional shape, it is divided into circular, square, rectangular and special-shaped steel pipes. According to the material, it is divided into carbon structural steel pipes, low alloy structural steel pipes, and alloy steel pipes. Steel pipes and clad steel pipes. [0003] Steel pipes are divided into seamless steel pipes and welded steel pipes. The production process of seamless steel pipes is to pierce solid billets or steel ingots into hollow capillaries, and then roll them into steel pipes of the required size. The methods of piercing and rolling are different. It constitutes different metho...

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Problems solved by technology

[0004] Welded steel pipes are generally bent by extrusion. Since the steel pipe is round, it is difficult to take it out after forming during the extrusion process. Generally, it is divided into small steps and extruded step by step. Gradually change the arc of the steel plate to realize the forming of the steel pipe. The process of distributed operation is more complicated, and the separate operation steps are prone to angle errors at the junctions of each step, resulting in deviations in the arc of the rolled steel pipe.

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