Forging process for preventing forging cracking of 11Cr17

Abstract

The invention discloses a forging process capable of preventing forging cracking of 11Cr17. The forging process capable of preventing forging cracking of 11Cr17 can replace an existing forging process, the cracking probability of 11Cr17 tooth head forgings in the machining process is reduced, and the performance of the tooth head forgings is improved. The specific operation includes the following steps that firstly, raw materials are prepared, a lathe is used for conducting turning operation on an existing rod body raw material with the diameter being 30 mm, then a rod material with the diameter being 28.5 mm is obtained, after that, a sawing machine is used for conducting blanking operation on the rod material with the diameter being 28.5 mm, a section of rod body raw material with the length value being 40 mm is obtained, and finally surface treatment is conducted on the two ends of the rod body raw material. According to the forging process capable of preventing forging cracking of 11Cr17, turning pretreatment is conducted on the initial rod body raw material, cracks on the surface of the raw material are effectively removed, forging cracks caused by the cracks of the raw material are prevented in the later period. Rounding treatment is conducted on the two ends of the single rod body raw material obtained through blanking, so that the material flowability is improved, and the machining problems of overburning of sharp burrs, folding, inclusion and the like are prevented.

Description

technical field [0001] The invention relates to the field of forging processing, in particular to a 11Cr17 forging process for preventing forging cracking. Background technique [0002] Forging is a processing method that uses forging machinery to exert pressure on metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. Defects such as as-cast looseness generated during the process optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. For example, the tooth head forgings made of 11Cr17 are now The forging process is used for production, but the existing forging process of tooth head forgings made of 11Cr17 material has some shortcomings that cannot be ignored, mainly because the existing forging process is prone to product cracking and poor material fluidity during the ...

AI Technical Summary

Problems solved by technology

[0002] Forging is a processing method that uses forging machinery to exert pressure on metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. Defects such as as-cast looseness generated during the process optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. For example, the tooth head forgings made of 11Cr17 are now The forging process is used for production, but the existing forging process of tooth head forgings made of 11Cr17 material has some shortcomings that cannot be ignored, mainly because the existing forging process is prone to product cracking and poor material fluidity during the production process. Problem, for this reason, in view of the above-mentioned problem, the present invention provides a kind of 11Cr17 forging technology that prevents forging cracking