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 Precision tube manufacturer
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Precision tube manufacturer

Contact person: manager Yan
Hand machine: 13603273751
Tel: 13603273751
Address: No.1, North Hehai village, JIANGGUANTUN office, Liaocheng Economic Development Zone, Shandong Province (ANZ logistics company)

The training quality of fine steel pipe is very high

Release time: September 19, 2020 popularity: one

  The macrostructure of steel is necessary without shrinkage cavity, subcutaneous bubble, white spot and micro pore. The central porosity and general porosity should not exceed grade 1.5, and segregation should not exceed grade 2. The annealed microstructure of steel should be fine pearlite with uniform distribution. The depth of decarburization layer, nonmetallic admixture and carbide inhomogeneity should be in accordance with relevant national regulations.




    The training quality of fine steel pipe is very high, and the demand is severe. The quantity, size and distribution of sulfur, phosphorus, hydrogen and other contents, as well as the quantity, size and distribution of nonmetallic admixture and carbide have a great influence on the service life of bearing steel, The failure of bearings is often caused by the propagation of microcracks around large admixtures or carbides.

    The content of admixture is closely related to the oxygen content in steel. The higher the oxygen content is, the more the amount of admixture is and the shorter the life is. The larger the particle size of the admixture and carbide is, the more uneven the distribution is, and the shorter the service life is. Their size and distribution are closely related to the training technology and training quality. At present, the primary process for producing bearing steel is continuous casting and electric furnace training, and electroslag remelting process training, In addition, a small number of double vacuum or multiple vacuum self consumption processes are selected to advance the quality of bearing steel.


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