What are the causes of cracks in steel bending?

Author:

Qingdao Yuanhao

What are the causes of cracks in steel bending?

Steel bending manufacturers said that bending is the stamping process of bending metal plates, pipes and profiles into a certain curvature, shape and size of the workpiece. Bending forming is widely used in the manufacture of high-pressure vessels, boiler drum, boiler furnace tube, hull steel plate and bone ribs, various utensils, instrumentation components and box and cabinet insert strips.

Steel bending defects and micro-cracks In the process of steel pipe induction heating bending, when the deformation temperature and a certain deformation level are exceeded, the steel bending outside will appear micro-cracks. So what we need to know is that these two conditions are now related to the material of the bent steel pipe. Under similar forming conditions of low deformation speed and high tensile strength, all bending operations of the pipe bender under such conditions may cause damage to this material. With regard to some internal microcracks, we start with grain boundary cracks. Depending on the forming conditions, the crack length is generally accessible. Cracks are mainly generated on the austenite grain boundaries perpendicular to the stress direction (sub-longitudinal axis), so they are also perpendicular to the slag inclusion of the extension tube. After the steel is bent, the microstructure is recrystallized by heat treatment, and the microcracks are transformed into crystal pulling. Here is a good manufacturer of beer on the Internet. The company's official website has a variety of different products. Consumers' evaluation of it is quite high.

In addition, it is necessary to pay attention to the general study of the influence of microcracks on the mechanical properties of hydraulic pipe bender when bending steel. However, microcracks can cause significant changes in the groove impact values. Therefore, in the pipeline transportation system, steel bends with different bending radii and different bending angles are now used to change the direction of pipeline operation, which has become an indispensable part of the pipeline connection in the project. Local. Its ovality, wall thickness change rate, mechanical properties and defects after bending, so you have to know that it is seriously related to the quality of pipeline transportation performance and the safety of use. Therefore, the steel pipe (that is, large diameter steel pipe) steel bending processing technology is particularly important. Moreover, the pipeline engineering of China's petroleum, chemical, electric power, transportation and other industries can create the manufacturing technology of steel bending and the structural principle of large pipe bending machine. Among them, you can create a bent steel tube and several bent materials. Now the company processes large-diameter seamless steel pipes and channel steel, stainless steel, anisotropic bends, rails and other products. The various products processed have been highly recognized by customers, and can process various special materials and specifications according to customer requirements.