High-performance and high-corrosion-resistant mandrel hanger material and heat treatment method thereof

A heat treatment method and oil pipe hanging technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve problems such as hardness of difficult-to-insulate materials, and achieve the effect of reducing hardness, simple and easy process, and good hardness stability.

Active Publication Date: 2016-10-12
JIANGSU JINSHI CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to industry research, the hardness of this material is 197-235HB, which has the best corrosion resistance, and 220HB or so is the best in corrosion resistance, strength and toughness. We define it as super stainless steel, but heat treatment process is difficult to keep the material hardness

Method used

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  • High-performance and high-corrosion-resistant mandrel hanger material and heat treatment method thereof
  • High-performance and high-corrosion-resistant mandrel hanger material and heat treatment method thereof
  • High-performance and high-corrosion-resistant mandrel hanger material and heat treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Produce F130 tubing hanger according to the following steps

[0022] (1) Forged tubing hanger blank: take the tubing hanger material according to the following components: C 0.10%, Si 0.20%, Mn 0.60%, P0.01%, S 0.01% Cr 12.50%, Mo 0.20%, Cu 0.1%, Ni 0.50%, V0.01%, Sn 0.10%, the sum of other trace elements ≤ 0.1%, and the rest is Fe; forging tubing hanging blanks according to process requirements;

[0023] (2) Annealing treatment of tubing hanging blank: preheat the tubing hanging blank to 650±10°C and hold it for 100 minutes, then heat it to 880±10°C and hold it for 300 minutes, then cool it to room temperature;

[0024] (3) Normalizing treatment of the oil pipe hanger blank: the oil pipe hanger blank is preheated to 650±10°C and held for 100 minutes, then heated to 980±10°C and held for 300 minutes, then taken out of the furnace and air cooled to room temperature;

[0025] (4) Quenching and tempering treatment: After the normalizing treatment, the oil pi...

Embodiment 2

[0026] Embodiment 2: produce F130 tubing hanger according to the following steps:

[0027] (1) Forged tubing hanger blank: take the tubing hanger material according to the following components: C 0.13%, Si 0.30%, Mn 0.65%, P0.02%, S 0.02% Cr 13.00%, Mo 0.25%, Cu 0.15%, Ni 0.55%, V ≤ 0.05%, Sn 0.20%, the sum of other trace elements ≤ 0.1%, and the rest is Fe; the oil pipe hanger blank is obtained by forging according to the process requirements;

[0028] (2) Annealing treatment of tubing hanging blank: preheat the tubing hanging blank to 650±10°C and hold it for 100 minutes, then heat it to 880±10°C and hold it for 300 minutes, then cool it to room temperature;

[0029] (3) Normalizing treatment of the oil pipe hanger blank: the oil pipe hanger blank is preheated to 650±10°C and held for 100 minutes, then heated to 980±10°C and held for 300 minutes, then taken out of the furnace and air cooled to room temperature;

[0030] (4) Quenching and tempering treatment: After the norma...

Embodiment 3

[0031] Embodiment 3: The F130 tubing hanger is produced according to the following steps:

[0032] (1) Forged tubing hanger blank: take the tubing hanger material according to the following components: C 0.15%, Si 0.40%, Mn 0.70%, P0.025%, S 0.025% Cr 13.50%, Mo 0.30%, Cu 0.2%, Ni 0.60%, V0.1%, Sn 0.25%, the sum of other trace elements ≤ 0.1%, and the rest is Fe; the oil pipe hanger blank is forged according to the process requirements;

[0033] (2) Annealing treatment of tubing hanging blank: preheat the tubing hanging blank to 650±10°C and hold it for 100 minutes, then heat it to 880±10°C and hold it for 300 minutes, then cool it to room temperature;

[0034] (3) Normalizing treatment of the oil pipe hanger blank: the oil pipe hanger blank is preheated to 650±10°C and held for 100 minutes, then heated to 980±10°C and held for 300 minutes, then taken out of the furnace and air cooled to room temperature;

[0035] (4) Quenching and tempering treatment: After the normalizing t...

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Abstract

The invention discloses a high-performance and high-corrosion-resistant mandrel hanger material and a heat treatment method thereof. The material is prepared from the following components in percentage by mass: 0.10-0.15% of C, 0.20-0.40% of Si, 0.60-0.70% of Mn, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 12.50-13.50% of Cr, 0.20-0.30% of Mo, less than or equal to 0.2% of Cu, 0.50-0.60% of Ni, less than or equal to 0.1% of V, 0.10-0.25% of Sn, less than or equal to 0.1% of other microelements and the balance of Fe. The heat treatment method comprises the steps of forging a mandrel hanger blank by using a mandrel hanger material according to a process requirement; preheating the mandrel hanger blank to 650+/-10 DEG C and preserving the heat, then, heating the mandrel hanger blank to 880+/-10 DEG C and preserving the heat, and then, carrying out furnace cooling to the room temperature; and after annealing, preheating the mandrel hanger blank to 650+/-10 DEG C and preserving the heat, then, heating the mandrel hanger blank to 1010+/-10 DEG C, quenching and preserving the heat, then, taking the mandrel hanger blank out of a furnace, carrying out oil cooling, heating the mandrel hanger blank to 700+/-10 DEG C, tempering and preserving the heat, then, taking the mandrel hanger blank out of the furnace, carrying out air cooling. A mandrel hanger disclosed by the invention has the mechanical property of 75K, the impact property of 35J (60 DEG C below zero) and the hardness of 220+/-2HB and is improved in corrosion stability and high in product safety.

Description

technical field [0001] The invention belongs to the technical field of engineering materials, in particular to a high-performance and high-corrosion-resistant tubing hanger material and a heat treatment method. Background technique [0002] Cr-Mo alloy steel is commonly used to make parts in petrochemical, natural gas, power machinery, steam turbine, boiler, and aviation industries. In addition to good processing performance and sufficient strength and toughness, these parts also require high temperature oxidation and corrosion resistance according to different uses. According to industry research, the hardness of this kind of material is 197-235HB, which has the best corrosion resistance, and 220HB or so is the best in corrosion resistance, strength and toughness. We define it as super stainless steel, but heat treatment process is difficult to keep the material hardness. In the modern petrochemical and natural gas industries, in order to meet the requirements of special w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C22C38/42C22C38/46C22C38/02C22C38/04C21D9/00
CPCC21D9/0068C22C38/008C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46
Inventor 吉哲范献兵
Owner JIANGSU JINSHI CASTING & FORGING
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