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A694GRF60 carbon steel forging and preparation method thereof

A technology of A694GRF60 and carbon steel, which is applied in the field of A694GRF60 carbon steel forgings and its preparation, can solve the problems of unqualified mechanical properties, coarse grains, microcracks, etc., to improve comprehensive mechanical properties, improve hardenability, reduce The effect of microcracks

Inactive Publication Date: 2019-03-19
ZHANGJIAGANG HAIGUO HEAVY FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the forgings produced in my country mainly have unqualified mechanical properties, and internal defects such as looseness, micro-cracks, and coarse grains. The world's three major oil production equipment manufacturers do not use Chinese forgings to produce deep-sea oil production equipment.

Method used

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  • A694GRF60 carbon steel forging and preparation method thereof

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Effect test

Embodiment 1

[0033] The composition of the A694GRF60 carbon steel forging prepared by the present invention and its mass percentage content (wt.%) are: C:0.09-0.10; Si:0.20-0.23; Mn:1.30-1.32; Cr:0.16-0.19; Ni: 0.79-0.82; Mo: 0.21-0.23; Nb: 0.013-0.015; V: 0.016-0.019; P: 0.005-0.007; S: 0.001-0.004; the balance is Fe.

[0034] The composition of the A694GRF60 carbon steel forging of the present invention and its mass percentage content (wt.%) are preferably: C: 0.10; Si: 0.22; Mn: 1.31; Cr: 0.18; Ni: 0.81; Mo: 0.22; Nb : 0.014; V: 0.018; P: 0.005; S: 0.001; the balance is Fe.

[0035] A kind of preparation method of A694GRF60 carbon steel forging provided by the invention comprises the following steps:

[0036] Step (1) preparation before forging: prepare the steel ingot according to the above composition;

[0037] Step (2) forging: the octagonal steel ingot that the size of the riser end is 1130mm, the size of the nozzle end is 970mm, and the length of the ingot body is 1790mm is carri...

Embodiment 2

[0048] The composition of the A694GRF60 carbon steel forging prepared by the present invention and its mass percentage content (wt.%) are: C:0.09-0.10; Si:0.20-0.23; Mn:1.30-1.32; Cr:0.16-0.19; Ni: 0.79-0.82; Mo: 0.21-0.23; Nb: 0.013-0.015; V: 0.016-0.019; P: 0.005-0.007; S: 0.001-0.004; the balance is Fe.

[0049] The composition of the A694GRF60 carbon steel forging of the present invention and its mass percentage content (wt.%) are preferably: C: 0.10; Si: 0.22; Mn: 1.31; Cr: 0.18; Ni: 0.81; Mo: 0.22; Nb : 0.014; V: 0.018; P: 0.005; S: 0.001; the balance is Fe.

[0050] A kind of preparation method of A694GRF60 carbon steel forging provided by the invention comprises the following steps:

[0051] Step (1) preparation before forging: prepare the steel ingot according to the above composition;

[0052] Step (2) forging: the octagonal steel ingot that the size of the riser end is 1130mm, the size of the nozzle end is 970mm, and the length of the ingot body is 1790mm is carri...

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Abstract

The invention provides an A694GRF60 carbon steel forging and a preparation method thereof. According to a texture of the A694GRF60 carbon steel forging, alloy elements such as Cr, Ni, Mo, Nb and V areadded in a trace amount on the basis of common low-carbon structural steel, and the content of each component is optimized; moreover, the preparation process conditions are further optimized, so thata product of the A694GRF60 carbon steel forging has the advantages of higher strength, good plastic toughness, low-temperature impact toughness and the like, and each performance index exceeds ASTM A694 F60 standard of the American iron and steel association and reaches the advanced level of similar products at home and abroad.

Description

technical field [0001] The invention belongs to the processing field of metal materials, in particular to an A694GRF60 carbon steel forging and a preparation method thereof. Background technique [0002] The materials of forgings for oil production equipment mainly include 4130, F22, 8630, etc., which are mainly used for deep sea valve bodies, piston rods, valve covers, etc. At present, the forgings produced in my country mainly have unqualified mechanical properties, and internal defects such as looseness, micro-cracks, and coarse grains. The world's three major oil production equipment manufacturers do not use Chinese forgings to produce deep-sea oil production equipment. Therefore, preparing high-quality forgings is an urgent problem to be solved at present. Contents of the invention [0003] In order to solve the problems existing in the prior art, the invention provides a kind of A694GRF60 carbon steel forging and preparation method thereof. The material of the A6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/48C22C38/46C21D1/18C21D1/28C21D8/00
CPCC22C38/02C21D1/18C21D1/28C21D8/005C21D2211/001C22C38/002C22C38/04C22C38/44C22C38/46C22C38/48
Inventor 陈一凡盛雪华蒋伟
Owner ZHANGJIAGANG HAIGUO HEAVY FORGING
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