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How to analyze the micro-crack phenomenon of the pipe bender?

How to analyze the micro-crack phenomenon of the pipe bender?

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  • Time of issue:2022-04-26
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(Summary description)Pipe bender is a new type of pipe bending tool with pipe bending function and lifting function. Various tubes can be bent to the desired position.

How to analyze the micro-crack phenomenon of the pipe bender?

(Summary description)Pipe bender is a new type of pipe bending tool with pipe bending function and lifting function. Various tubes can be bent to the desired position.

  • Categories:news
  • Author:
  • Origin:
  • Time of issue:2022-04-26
  • Views:0
Information

        Pipe bender is a new type of pipe bending tool with pipe bending function and lifting function. Various tubes can be bent to the desired position. The pipe bending machine has many advantages such as reasonable structure, safe use, convenient operation, reasonable price, fast loading and unloading, and one machine for multiple purposes. In addition to the pipe bending function, it can also be used as a separate hydraulic jacking machine by removing the pipe bending part (oil cylinder). Today, our Xinzhonghe machinery experts will take you to analyze the phenomenon of micro-cracks in the pipe bending machine, hoping to bring convenience to everyone.

        Regarding the micro-crack phenomenon of the pipe bender, we should make a brief analysis from different angles. For example, when the micro-crack is used to bend the steel pipe by induction heating, when it exceeds a certain degree of deformation temperature and a certain degree of deformation, the outer side of the pipe will be deformed. Microcracks are produced. Both cases are related to the material of the pipe being bent. Under similar forming conditions with low deformation speed and high tension resistance, all bending operations of the pipe bender in this case may produce this material damage.

        Regarding microcracks, we study grain boundary cracks. According to the forming conditions, the length of the cracks can generally be as long as possible. slag inclusions in the tube. After the steel pipe is bent, the structure is recrystallized by heat treatment, so that the microcracks are transformed into crystal pulls.

       Extensive research on the effect of microcracks on the mechanical properties of hydraulic pipe benders has shown that yield strength and tensile strength are not affected at room temperature or even higher. However, microcracks can cause significant changes in slot impact values.

        There are few discussions on the effect of microcracks on the creep state of metals. The microcracks generated in the induction heating bending process are mainly affected by the deformation degree and deformation temperature. Therefore, when the limit conditions are exceeded and the deformation plus deformation temperature increases, the microcracks will increase. This means that if the bending temperature is kept below the microcrack formation temperature, bending with a predetermined bending radius can prevent the generation of microcracks.

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