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ZG-SY09MnCrNiMo RE steel and method for manufacturing casting of ZG-SY09MnCrNiMo RE steel

A steel casting and casting technology, which is applied in the field of ZG-SY09MnCrNiMoRE steel casting preparation, can solve the problems of low strength and rigidity, difficulty in meeting the performance requirements of low-carbon engineering structural steel, and low C element, so as to reduce production costs and improve strength , the effect of prolonging the service life

Active Publication Date: 2019-11-19
MCC SFRE HEAVY IND EQUIP
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a ZG-SY09MnCrNiMo RE steel, which solves the problem that the low C element in the prior art makes its strength and stiffness low, and it is difficult to meet the performance requirements of low-carbon engineering structural steel

Method used

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Embodiment 5

[0057] The final composition of embodiment 5) corresponds to Table 2-1 to Table 2-5 respectively;

[0058] Table 2-1, the final composition table (element mass content, %) of the embodiment of the present invention 1

[0059] C Si mn S P Cr 0.07 0.25 1.29 0.009 0.01 0.58 Ni Mo Ti Nb B 0.48 0.35 0.01 0.04 0 N: 70ppm H: 2.5ppm O： 50ppm

[0060] Table 2-2, the final composition table (element mass content, %) of the embodiment of the present invention 2

[0061] C Si mn S P Cr 0.08 0.28 1.06 0.009 0.012 0.51 Ni Mo Ti Nb B 0.45 0.36 0.012 0.046 0 N: 69ppm H: 2.0ppm O： 45ppm

[0062] Table 2-3, the final composition list (element mass content, %) of the embodiment of the present invention 3

[0063]

[0064]

[0065] Table 2-4, the final composition table (element mass content, %) of the embodiment of the present invention 4

[0066] C ...

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Abstract

The invention discloses a ZG-SY09MnCrNiMo RE steel and a method for manufacturing a casting of the ZG-SY09MnCrNiMo RE steel. The ZG-SY09MnCrNiMo RE steel comprises the following components in percentage by mass: 0.06%-0.10 % of C, 0.25%-0.4 % of Si, 1.3%-1.6 % of Mn, 0.4%-0.6 % of Ni, 0.01%-0.02 % of Ti, 0.03%-0.06 % of Nb, 0.4%-0.6 % of Cr, 0.35%-0.5 % of Mo, less than or equal to 0.02% of P, less than or equal to 0.01% of S and the balance Fe, wherein the percentages of the components add up to 100%. The method comprises the steps of 1, carrying out melting, oxidizing and primary reducing byusing an electric furnace; 2, refining by using an LF refining furnace; 3, pouring; and 4, normalizing and tempering the steel casting. The steel and the casting of the steel have excellent mechanical properties and good application prospects.

Description

technical field [0001] The invention belongs to the technical field of metallurgical materials and processing, and relates to a ZG-SY09MnCrNiMo RE steel, and also relates to a preparation method of the ZG-SY09MnCrNiMo RE steel casting. Background technique [0002] At present, in the metallurgical industry, with the development of metallurgical technology, a class of weldable low-carbon alloy structural steel for engineering has emerged. Compared with ordinary carbon structural steel, this type of steel has lower carbon content, higher yield point or yield strength, better cold and hot forming and good weldability. This type of steel is mainly used in fields such as automobile floor plates, wind power equipment, coal mining machinery, metallurgical equipment, and military products (the steel types described in the present invention are used to prepare wind power equipment), and at the same time, because such steel structures are compared with ordinary carbon structures The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/58C22C38/50C22C38/48C22C38/44C21D1/28C22C33/04C21C7/06
CPCC21C7/06C21D1/28C22C33/04C22C38/02C22C38/04C22C38/44C22C38/48C22C38/50C22C38/58
Inventor 吴龙祥田斌范国均陈阳程锋涛
Owner MCC SFRE HEAVY IND EQUIP
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