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Steel for fluid end of fracturing pump, and preparation process thereof

A technology for the preparation process and fluid end, which is applied in the field of steel for the hydraulic end of fracturing pumps and its preparation process, can solve the problems of failing to clarify the control range of impurity elements and failing to meet the requirements of heat treatment processes, and achieve easy standardized operations, chemical Good composition stability, good control stability effect

Inactive Publication Date: 2017-05-24
马鞍山旭阳机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the standard specifies the composition range of alloying elements, it cannot meet the requirements of different heat treatment processes
In addition, the control range of impurity elements such as [O], [H], [N] before material forging has not been clarified

Method used

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  • Steel for fluid end of fracturing pump, and preparation process thereof

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Embodiment Construction

[0022] The invention can produce a continuous casting round billet of steel for the hydraulic end of a fracturing pump with T.O≤0.0015%, and then perform electroslag remelting (ESR). The specific technical scheme includes the smelting and preparation of the consumable electrode and the The electroslag remelting two modules.

[0023] A steel for the hydraulic end of a fracturing pump, which is composed of the following chemical components in weight percent: C%: 0.25-0.40, Si%: ≤0.30, Mn%: 0.25-0.50, Cr%: 1.10-1.70, T.O%: ≤0.0015, P%: ≤0.0080, S%: ≤0.0050, Al%: 0.010~0.025, Ni%: 2.80~3.50, Mo%: 0.30~0.60, V%: 0.05~0.20, Ti%≤0.0015, Cu% ≤0.15, As%≤0.04, Sn%≤0.03, Sb%≤0.005, Pb%≤0.002, and the rest are Fe and unavoidable impurities.

[0024] A preparation process for steel for the hydraulic end of a fracturing pump, including a smelting preparation process module with consumable electrodes and an electroslag remelting process module for consumable electrodes. Refining step, RH v...

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Abstract

The invention discloses steel for a fluid end of a fracturing pump, and a preparation process thereof. A continuous cast round billet of steel with T.O of not greater than 0.0015%, for the fluid end of the fracturing pump, can be produced, and then electroslag remelting (ESR) is carried out; the specific technical scheme of the electroslag remelting comprises two modules for smelting preparation for a consumable electrode and electroslag remelting for the consumable electrode; and the following technical route is adopted: electric arc furnace primary smelting, LF refining, RH vacuum refining, round billet continuous casting, billet continuous casting, electroslag remelting and ESR ingot obtaining. The invention provides steel for a fluid end of a fracturing pump, and an electroslag remelting process thereof. The components are redesigned, electric process parameters are correspondingly adjusted, and an electroslag remelting process capable of controlling the contents of gas elements in the steel and low in energy consumption is developed.

Description

technical field [0001] The invention relates to the field of electroslag remelting of special metallurgy, and in particular provides a steel for hydraulic end of a fracturing pump and a preparation process thereof. Background technique [0002] The hydraulic end of the fracturing pump is an important part of the power end of the oil exploration cementing fracturing vehicle, mainly used for acidizing treatment, well cementing, gravel packing, fracturing operations, etc., and is used in harsh applications such as acidizing, high sand ratio, high pressure, and large displacement. environment. Steel materials are required to have high wear resistance, high pressure resistance, impact resistance and other properties to meet the requirements of the liquid end to maintain high performance during its service life under harsh conditions. [0003] The main component of the steel used for the hydraulic end of the fracturing pump complies with the US SAE 4330V material standard. Altho...

Claims

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Application Information

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IPC IPC(8): C22C38/46C22C38/44C22C38/04C22C38/02C22C38/06C22C38/42C22C33/04C22B9/18C21C7/06C21C7/10
CPCC21C7/0006C21C7/0025C21C7/06C21C7/10C22B9/18C22C33/04C22C38/008C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46
Inventor 吴高明徐良乐吴高路徐良清
Owner 马鞍山旭阳机械有限公司
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