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A kind of stainless steel for pump head body and preparation method thereof

A technology of stainless steel and pump head, applied in the field of metallurgy, can solve the problems of poor toughness, poor corrosion resistance, etc., achieve high strength and hardness, good comprehensive machinery, and eliminate the effect of forging stress

Active Publication Date: 2022-03-15
ZHEJIANG ZHONGMEI MACHINERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the present invention will solve the technical problems of poor toughness and poor corrosion resistance of the existing materials used for the pump head body, thereby providing a stainless steel for the pump head body and its preparation method

Method used

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  • A kind of stainless steel for pump head body and preparation method thereof
  • A kind of stainless steel for pump head body and preparation method thereof
  • A kind of stainless steel for pump head body and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a stainless steel for the pump head body, which is composed of the following elements by mass percentage: C: 0.03%, Si: 0.50%, Mn: 0.95%, S: 0.008%, P: 0.010%, Cr: 14.90%, Ni: 4.50%, Mo: 1.82%, N: 0.18%, Cu: 0.36%, Ti: 0.25%, and the balance is Fe and unavoidable impurities.

[0043] Its preparation method is specifically:

[0044] (1) According to the composition and design requirements of stainless steel, the ingredients are prepared, and then smelted by a general-purpose electric arc furnace. The electric furnace smelting process is a conventional process, including: electric furnace steelmaking, refining outside the furnace, vacuum degassing, casting electroslag blanks and blank annealing, among which The annealing treatment is to keep the temperature at 1050°C for 4 hours, then cool to room temperature in the furnace, and finally obtain a mixed steel ingot;

[0045] (2) The mixed steel ingot smelted by electric arc furnace is refined by el...

Embodiment 2

[0054] This embodiment provides a stainless steel for the pump head body, which is composed of the following elements by mass percentage: C: 0.03%, Si: 0.55%, Mn: 0.90%, S: 0.008%, P: 0.010%, Cr: 15.50%, Ni: 4.60%, Mo: 1.70%, N: 0.20%, Cu: 0.31%, Ti: 0.28%, and the balance is Fe and unavoidable impurities.

[0055] Its preparation method is specifically:

[0056] (1) According to the composition and design requirements of stainless steel, the ingredients are prepared, and then smelted by a general-purpose electric arc furnace. The electric furnace smelting process is a conventional process, including: electric furnace steelmaking, refining outside the furnace, vacuum degassing, casting electroslag blanks and blank annealing, among which The annealing treatment is to keep warm at 1080°C for 5 hours and then cool to room temperature in the furnace, and finally obtain a mixed steel ingot;

[0057] (2) The mixed steel ingot smelted by electric arc furnace is refined by electrosla...

Embodiment 3

[0066] This embodiment provides a stainless steel for the pump head body, which is composed of the following elements by mass percentage: C: 0.02%, Si: 0.48%, Mn: 0.98%, S: 0.008%, P: 0.009%, Cr: 15.00%, Ni: 4.80%, Mo: 1.72%, N: 0.20%, Cu: 0.39%, Ti: 0.23%, and the balance is Fe and unavoidable impurities.

[0067] Its preparation method is specifically:

[0068] (1) According to the composition and design requirements of stainless steel, the ingredients are prepared, and then smelted by a general-purpose electric arc furnace. The electric furnace smelting process is a conventional process, including: electric furnace steelmaking, refining outside the furnace, vacuum degassing, casting electroslag blanks and blank annealing, among which The annealing treatment is to keep the temperature at 1060°C for 4 hours, then cool to room temperature in the furnace, and finally obtain a mixed steel ingot;

[0069] (2) The mixed steel ingot smelted by electric arc furnace is refined by el...

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Abstract

The invention discloses a stainless steel for a pump head body. The raw materials include C≤0.04%, Si≤0.60%, Mn: 0.50-1.00%, S≤0.008%, P≤0.010%, Cr: 14.00-16.00%, Ni: 3.50‑5.50%, Mo: 1.50‑2.00%, N: 0.14‑0.20%, Cu: 0.20‑0.40%, Ti: 0.20‑0.40%, and the rest are Fe and unavoidable impurities. The invention also discloses a preparation method of the stainless steel. The present invention screens and optimizes the chemical composition of stainless steel, and seeks reasonable smelting, forging methods and heat treatment processes for it, and finally obtains stainless steel with high hardness, excellent impact toughness, good corrosion resistance, and low alloy cost, which meets the requirements of large-scale The need for the pump head body material of the intelligent mine emulsion pump station.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a stainless steel for a pump head body and a preparation method thereof. Background technique [0002] Mine emulsion pumping station is one of the key equipment for modern high-yield and high-efficiency fully mechanized mining face in coal mine, an important power unit to ensure the safe and reliable operation of fully mechanized mining face, and the heart and hydraulic power source of the entire coal mine. The mine emulsion pumping station can be generally divided into two parts: the power end and the hydraulic end. The power end part is mainly composed of a box body, a crankshaft, a connecting rod slider and a reduction gear box. The box body adopts a high-strength cast iron overall box structure, and there is lubricating oil in the box to realize splash lubrication for moving parts. The crankshaft is supported at both ends. The liquid end is mainly composed of a plunge...

Claims

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Application Information

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IPC IPC(8): C22C38/50C22C38/42C22C38/44C22C38/02C22C38/04C21D8/00C21D1/26C21D1/18C21D1/28C22B9/18
CPCC22C38/50C22C38/42C22C38/04C22C38/44C22C38/02C22C38/001C21D8/005C21D1/26C21D1/18C21D1/28C22B9/18C21D2211/008
Inventor 郑巨静张拴才王博袁建立陈腾亚杨勇陈仁建倪伟强郑铠王煜然
Owner ZHEJIANG ZHONGMEI MACHINERY TECH
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