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Carbon steel and stainless steel clad steel plate with toughness performance and production method

A clad steel plate and stainless steel technology, which is applied to carbon steel and stainless steel clad steel plates and production fields, can solve the problems of poor corrosion resistance and strength, and achieve excellent resistance to hydrogen-induced cracking, excellent strength and toughness. The effect of improving safety

Inactive Publication Date: 2015-10-21
QINHUANGDAO SHOUQIN METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a carbon steel and stainless steel clad steel plate with high toughness and its production method, which solves the problem that corrosion resistance and strength cannot be well combined

Method used

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  • Carbon steel and stainless steel clad steel plate with toughness performance and production method
  • Carbon steel and stainless steel clad steel plate with toughness performance and production method
  • Carbon steel and stainless steel clad steel plate with toughness performance and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In this experiment, carbon steel 1 is used as the base material, base material X60 chemical composition C: 0.03~0.10%, Si: 0.01~0.40%, Mn: 1.00~1.70%, P: ≤0.015%, S: ≤0.003%, Alt: 0.01 ~0.06%, N: ≤0.006%, H: ≤0.0002%, the balance is Fe and unavoidable impurity elements, and Nb, V, Ti, Cu, Ni, Cr microalloy strengthening elements are also added, Nb+V+Ti≤ 0.15%, Cu: 0.00 to 0.30%, Ni: 0.00 to 0.30%, and Cr: 0.00 to 0.30%, 1 to 3 kinds selected. The rest are Fe and unavoidable impurity elements.

[0018] Actual chemical composition (wt%) is as shown in table 1:

[0019] Table 1 The actual chemical composition of Example 1

[0020] C Si MN P S Alt NB V Ti NI Cr Cu CEQ 0.085 0.26 1.45 0.012 0.0019 0.035 0.05 0.035 0.014 0.239 0.2 0.115 0.42

[0021] The 3 components of the clad 316L stainless steel meet the requirements of the ASTM A240M-05 standard "Standard Specification for Chromium and Chromium-Nickel Stainless Steel Pl...

Embodiment 2

[0032] Actual chemical composition (wt%) is as shown in table 3:

[0033] Table 3 Example 2 actual chemical composition

[0034] C Si MN P S Alt NB V Ti NI Cr Cu CEQ 0.082 0.22 1.5 0.01 0.0016 0.033 0.04 0.037 0.014 0.245 0.21 0.143 0.42

[0035] The 3 components of the clad 316L stainless steel meet the requirements of the ASTM A240M-05 standard "Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plates, Sheets and Strips for Pressure Vessels and General Purposes", and the weight percentage is C≤0.03%, Mn ≤2.0%, Si≤0.75%, in addition, it also contains Cr, Ni, Mo and other alloying elements to increase corrosion resistance. The specification of the steel plate is: (20+3.5)×1800×12000mm (thickness×width×length), wherein the thickness of carbon steel 1 is 20mm, and the thickness of 316L stainless steel 3 is 3.5mm.

[0036] The production process includes billet assembly, heating, rough rolling, finish rollin...

example 3

[0047] Example 3 actual chemical composition (wt%) is as shown in table 5:

[0048] Table 5 Example 3 actual chemical composition

[0049] C Si MN P S Alt NB V Ti NI Cr Cu CEQ 0.082 0.22 1.5 0.01 0.0016 0.033 0.04 0.037 0.014 0.245 0.21 0.143 0.42

[0050] The 3 components of the clad 316L stainless steel meet the requirements of the ASTM A240M-05 standard "Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plates, Sheets and Strips for Pressure Vessels and General Purposes", and the weight percentage is C≤0.03%, Mn ≤2.0%, Si≤0.75%, in addition, it also contains Cr, Ni, Mo and other alloying elements to increase corrosion resistance. The specification of the steel plate is: (16+3)×1800×12000mm (thickness×width×length), wherein the thickness of carbon steel 1 is 16mm, and the thickness of 316L stainless steel 3 is 3mm.

[0051] The production process includes billet assembly, heating, rough rolling, finish ...

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Abstract

The invention discloses a carbon steel and stainless steel clad steel plate with toughness performance, and belongs to the technical field of production of metal clad plates. Carbon steel is a basal material, and satisfies the requirements of API5L "American Petroleum Pipeline Steel Specification"; 316L stainless steel is a multiple layer, and components satisfy the requirements of ASTM A240M-05 standard "Standard Specification of Chromium and Chromium Nickel Stainless Steel Plate, Sheet and Strip Steel for Pressure Vessels and General Purposes"; flux is BNi brazing filler metal; and solder resist is a mixture of magnesium oxide and aluminum oxide. The process comprises steel blank assembly, heating, rough rolling, finish rolling and heat treatment. The clad steel plate has excellent toughness performance and hydrogen induced cracking resistance, so that the use safety of crude oil conveying pipes is improved.

Description

technical field [0001] The invention belongs to the technical field of metal composite plate production, and in particular relates to a carbon steel and stainless steel composite steel plate with strong and tough performance and a production method. It is suitable for the manufacture of steel pipes for transporting corrosion-resistant oil and natural gas. Background technique [0002] The current material of oil pipelines is generally low carbon steel, such as API B-X80 and other steel grades. However, with the development of corrosive oil and gas and offshore oil and gas in the future, general carbon steel cannot meet its corrosion resistance requirements. If you continue to use general pipelines Steel will bring a greater quality risk. The use of stainless steel and carbon steel composite plates as oil and gas transmission materials has significant advantages. Because it has both the corrosion resistance of stainless steel materials and the strength and toughness of gener...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C38/46C22C38/50C22C33/04C21D8/02
Inventor 王志勇田士平白学军闫智平刘永利董占斌张跃飞李群李家鼎王小勇孙启昆谌铁强王坤刘晓辉郝珊
Owner QINHUANGDAO SHOUQIN METAL MATERIAL
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