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Annealing process for improving performance of 410 stainless steel

An annealing process and stainless steel technology, applied in the field of annealing process, can solve the problems of complex structure and no unified conclusion on strengthening mechanism.

Inactive Publication Date: 2016-04-13
王美
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  • Abstract
  • Description
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Problems solved by technology

[0003] The strengthening mechanism of steel includes dislocation strengthening, crystal structure strengthening and solid solution strengthening. Due to the complexity of its structure, there is no unified conclusion on the strengthening mechanism of martensitic steel.

Method used

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  • Annealing process for improving performance of 410 stainless steel
  • Annealing process for improving performance of 410 stainless steel
  • Annealing process for improving performance of 410 stainless steel

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Experimental program
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Embodiment Construction

[0015] Table 1 shows the chemical composition of the 410 ferritic stainless steel cold-rolled plate used in the test analyzed by the mobile spectrometer PMI-MASTERPRO. The hot rolling finish temperature of this cold-rolled sheet was 850° C., and after annealing, it was cold-rolled to a final thickness of 0.8 mm.

[0016]

[0017] Since ferritic stainless steels maintain a body-centered cubic ferrite structure during heating and cooling, they cannot be strengthened by heat treatment. The dominant heat treatment of ferritic stainless steel is annealing to provide stress relief and recrystallization structure of banded structure caused by cold rolling, so as to ensure that the steel has good comprehensive properties of mechanical properties, cold formability and corrosion resistance. For the final annealing of 430 ferritic stainless steel cold-rolled sheets, the selection of the optimal annealing temperature is based on the principle that the grains do not grow too much and co...

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Abstract

The invention discloses an annealing process for improving performance of 410 stainless steel. The 410 ferritic stainless steel comprises chemical components, by mass percentage: 0.065 of C, 0.179 of Si, 0.725 of Mn, 16.7 of Cr, 0.152 of V, P less than 0.005, and S less than 0.005, with the balance being Fe. The annealing process is characterized in that the hot rolling finishing temperature of a rolling plate is 850 DEG C; and cold rolling is performed after annealing, wherein heat preservation is carried out at 850-910 DEG C for 30-90s for annealing. The annealing temperature is 910 DEG C, and the heat preservation time for annealing is 30s.

Description

technical field [0001] The invention relates to an annealing process for improving the properties of 410 stainless steel. Background technique [0002] The development of the chemical industry and the power industry promoted the expansion of alloy steel varieties, so stainless steel and heat-resistant steel came out during this period. In 1920, German Maurer (E. Maurer) invented 18-8 stainless acid-resistant steel. In 1929, Fe-Cr-Al resistance wire appeared in the United States. By 1939, Germany began to use austenitic resistance wire in the power industry. hot steel. From the Second World War to the 1960s, it was mainly the era of developing high-strength steel and ultra-high-strength steel. Due to the needs of the development of aviation industry and rocket technology, many new types of high-strength steel and ultra-high-strength steel appeared, such as Precipitation-hardening high-strength stainless steel and various low-alloy high-strength steels are representative ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C22C38/24
Inventor 王美
Owner 王美
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