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00Cr18Mo2 stainless steel pipe billet and manufacture method thereof

A 00cr18mo2, stainless steel tube technology, applied in the field of stainless steel materials, can solve the problems of large power consumption, high content of non-metallic inclusions, large material consumption, etc., and achieve the effect of saving resources, saving energy and fewer process steps

Active Publication Date: 2012-11-21
常熟市长江不锈钢材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This preparation method has at least the following two shortcomings: one is that the preparation period is long, and electric energy heating needs to be used for many times during the preparation process, which not only consumes a lot of electric energy, but also consumes a lot of materials (the yield of finished product is about 66%); Remove harmful chemical elements and balance O 2 , N, C content, so the content of non-metallic inclusions is high

Method used

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  • 00Cr18Mo2 stainless steel pipe billet and manufacture method thereof

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Effect test

Embodiment 1

[0024] To manufacture a circular cross-sectional shape and a diameter (outer diameter) of 00Cr18Mo2 stainless steel tube blank as an example:

[0025] A) smelting, stainless steel scrap steel, carbon steel scrap steel and ferroalloy are put into the intermediate frequency furnace for primary refining to obtain the primary molten steel, and the initial molten steel is sampled and analyzed and the mass % content of the chemical elements of the primary molten steel is adjusted to be adjusted to : 1.70% by mass of carbon, 0.75% by mass of silicon, 0.43% by mass of manganese, 0.023% by mass of phosphorus and 0.016% by mass of sulfur, 18.50% by mass of chromium and 1.78% by mass of molybdenum, The balance is iron. After the above-mentioned sampling and adjustment of chemical elements, the primary molten steel is mixed into AOD refining. The refining temperature of AOD refining is controlled at 1630 ° C. The refining time of AOD refining is controlled at 45 minutes. In the process ...

Embodiment 2

[0030] Still manufactured with a circular cross-sectional shape and a diameter (outer diameter) of 00Cr18Mo2 stainless steel tube blank as an example:

[0031] A) smelting, stainless steel scrap steel, carbon steel scrap steel and ferroalloy are put into the intermediate frequency furnace for primary refining to obtain the primary molten steel, and the initial molten steel is sampled and analyzed and the mass % content of the chemical elements of the primary molten steel is adjusted to be adjusted to : 1.75% by mass of carbon, 0.78% by mass of silicon, 0.45% by mass of manganese, 0.022% by mass of phosphorus, 0.013% by mass of sulfur, 18.65% by mass of chromium and 1.75% by mass of molybdenum, The balance is iron. After the above-mentioned sampling and adjustment of chemical elements, the primary molten steel is mixed into AOD refining. The refining temperature of AOD refining is controlled at 1680 ° C. The refining time of AOD refining is controlled at 40 minutes. In the pr...

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Abstract

The invention discloses a 00Cr18Mo2 stainless steel pipe billet and a manufacture method thereof, which belong to the technical field of stainless steel materials. The 00Cr18Mo2 stainless steel pipe billet comprises the following components: 0.01-0.025wt% of C, 0.15-0.35wt% of Si, 0.22-0.45wt% of Mn, 0.023-0.030wt% of P, 0.002-0.015wt% of S, 18.00-19.50wt% of Cr, 1.70-2.50wt% of Mo and the balance of Fe. The 00Cr18Mo2 stainless steel pipe billet has the advantages of excellent corrosion resistance, low brittle transition temperature and good adaptability and can be applied to a generator set cooled by sea water, and resource is saved. Because the provided manufacture method has few technical steps, energy can be saved because the 00Cr18Mo2 stainless steel pipe billet does not need to be heated by electricity energy for multiple times. The manufacture method is favorable for the content of O2, N and C so as to control the content of harmful chemical elements. The non-metal inclusion inthe obtained pipe billet can reach B-class 0.5 grade, C-class 0.5 grade, D-class 1 grade and DS class 1 grade. The yield rate is above 89%.

Description

technical field [0001] The invention belongs to the technical field of stainless steel materials, in particular relates to a 00Cr18Mo2 stainless steel tube blank, and also relates to a manufacturing method of the stainless steel tube blank. Background technique [0002] With the rapid development of the global economy, the continuous improvement of human living standards and the improvement of the quality of life, the dependence on and demand for electric energy has grown at an alarming rate. At the same time, human beings have paid attention to the importance of their own development and ecological protection. Taking precious fresh water resources as an example, governments of various countries have proposed laws and regulations for legal protection, rational and economical use of fresh water. The protection of fresh water resources in the power generation industry is an example, because many foreign power plants are actively using seawater to cool their generator sets, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/22C21C7/068C21D1/26
Inventor 金振华王雪根
Owner 常熟市长江不锈钢材料有限公司
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