An economical corrosion-resistant sucker rod wire rod and its manufacturing method

A manufacturing method and corrosion-resistant technology, applied in corrosion-resistant, continuous or discontinuous sucker rod steel, economical field, can solve problems such as high price, increased material cost, and short service life

Inactive Publication Date: 2011-12-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Material of steel for sucker rods: low-medium carbon alloy steel is generally used, such as 20CrMoA, 35CrMoA, 20Cr2MoNi and other quenched and tempered steels containing chromium and molybdenum. The problem with this steel type is that the material price is cheaper than stainless steel, but the material is not corrosion-resistant , short service life
Currently fighting against CO 2 , Cl - In the selection of ionic corrosion materials, the addition of Cr, Ni and other elements (such as

Method used

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  • An economical corrosion-resistant sucker rod wire rod and its manufacturing method
  • An economical corrosion-resistant sucker rod wire rod and its manufacturing method
  • An economical corrosion-resistant sucker rod wire rod and its manufacturing method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0118] An economical corrosion-resistant sucker rod steel, its composition (wt%) is:

[0119] C: 0.06%, Si: 0.25%, Mn: 0.57%, P: ≤0.012%, S: ≤0.010%, Al: 0.035%, Cu: 0.25%, Ni: 0.22%, Cr: 2.95%, Mo: 0.28 %, N: ≤0.0060%, the rest is iron and unavoidable impurities.

[0120] The steel of the above composition is used to manufacture economical corrosion-resistant sucker rod wire rod. When manufacturing the economical corrosion-resistant sucker rod wire rod of the present invention, it can be smelted in an oxygen top-blown converter or in an electric furnace, and Refined in a heating ladle, and then cast into a billet by die casting or continuous casting. ф35.0mm wire rod.

Embodiment 2

[0122] An economical corrosion-resistant sucker rod steel, its composition (wt%) is:

[0123] C: 0.08%, Si: 0.23%, Mn: 0.55%, P: ≤0.010%, S: ≤0.008%, Al: 0.02%, Cu: 0.22%, Ni: 0.20%, Cr: 3.00%, Mo: 0.25 %, N: ≤0.0030%, the rest is iron and unavoidable impurities.

[0124] The steel of the above composition is used to manufacture economical corrosion-resistant sucker rod wire rod. When manufacturing the economical corrosion-resistant sucker rod wire rod of the present invention, it can be smelted in an oxygen top-blown converter or in an electric furnace, and Refined in a heating ladle, and then cast into a billet by die casting or continuous casting, the billet is heated and released at a temperature of 1140°C, the inlet temperature of the finishing mill is 1090°C, the spinning temperature is 950°C±10°C, and it is made into ф13 through controlled rolling and controlled cooling in a wire rod mill. .0~ф35.0mm wire rod.

Embodiment 3

[0126] An economical corrosion-resistant sucker rod steel, its composition (wt%) is:

[0127] C: 0.10%, Si: 0.30%, Mn: 0.53%, P: ≤0.012%, S: ≤0.010%, Al: 0.04%, Cu: 0.20%, Ni: 0.25%, Cr: 3.05%, Mo: 0.30 %, N: ≤0.0060%, the rest is iron and unavoidable impurities.

[0128] The steel of the above composition is used to manufacture economical corrosion-resistant sucker rod wire rod. When manufacturing the economical corrosion-resistant sucker rod wire rod of the present invention, it can be smelted in an oxygen top-blown converter or in an electric furnace, and Refined in a heating ladle, and then cast into a billet by die casting or continuous casting. ф35.0mm wire rod.

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Abstract

The invention relates to an economical corrosion-resistant steel and a manufacturing method of the steel wire rod. Its composition is (wt%): C: 0.06-0.10%, Si: 0.20-0.30%, Mn: 0.50-0.60%, P: ≤0.012%, S: ≤0.010%, Al: 0.02-0.04%, Cu: 0.20-0.30%, Ni: 0.20-0.25%, Cr: 2.95-3.10%, Mo: 0.25-0.35%, N: ≤0.0060%, and the rest are Fe and unavoidable impurities. In this method, after continuous casting into billets, the billets are heated and discharged at a temperature of 1150°C±15°C, the inlet temperature of the finishing mill is 1000°C±10°C, and the spinning temperature is 950°C±10°C, and controlled rolling and cooling in a wire rod mill. into ф13.0~ф35.0mm wire rod.

Description

technical field [0001] The invention relates to an economical, corrosion-resistant, continuous or discontinuous steel for sucker rods, especially the chemical composition of steel for continuous corrosion-resistant sucker rods and the steel type ф13.0-ф35.0mm wire rod manufacturing method. Background technique [0002] Rod pump pumping is a widely used oil pumping method in the world's oil extraction industry. About 90% of the oil wells on land in my country use rod pumps. After the mid-1980s, my country's major oil fields have entered the middle and late stages of exploitation. The water content of crude oil is rising, the depth of pumping is increasing, and the number of heavy oil areas is increasing. The development of my country's oilfields has continuously put forward new requirements for rod pumping equipment, which has promoted the development of my country's sucker rod materials. With the rise of international oil prices, some oil production companies in my country...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C33/04C21D8/00E21B17/00
Inventor 张弛张忠铧卢俊蔡海燕孙元宁杨建强赵社平
Owner BAOSHAN IRON & STEEL CO LTD
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