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Preparation method for anticorrosion steel used for water-cooling spray nozzle

A technology for corrosion-resistant steel and nozzles, applied in coatings, metal material coating processes, solid-state diffusion coatings, etc., can solve problems such as insufficient corrosion resistance, improve corrosion resistance, purify grain boundaries, and improve densification. Effect

Active Publication Date: 2016-11-16
滁州帝邦科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Water-cooling equipment materials in the prior art often have insufficient corrosion resistance, and a new corrosion-resistant steel is needed for water-cooling equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method for the corrosion-resistant steel that the present invention proposes is used for water-cooled nozzle, comprises the steps:

[0021] S1. Raising the temperature of the raw material to a molten state to obtain a liquid alloy, wherein the components of the liquid alloy include: C: 0.1%, Cr: 1.5%, Al: 0.3%, Mg: 1.6%, Zr: 0.2%, Ni: 0.6%, Mn: 1.2%, Mo: 0.12%, V: 0.1%, Co: 0.06%, Ga: 0.02%, Ti: 1.6%, Si: 0.6%, and the rest is Fe; then cast to get billets;

[0022] S2. Raise the temperature of the billet to 620°C at a heating rate of 8°C / min, keep it warm for 2.5 hours, then raise it to 900°C at a heating rate of 1°C / min, keep it warm for 45 minutes, then raise the temperature to 1000°C, keep it warm for 3 hours, and then oil Cool to 260°C, then heat up to 500°C, keep warm for 2 hours, and air cool to room temperature;

[0023] S3. Place the heat-treated billet in acetone for 10 minutes, then ultrasonically clean it for 15 minutes, take it out and...

Embodiment 2

[0026] A kind of preparation method for the corrosion-resistant steel that the present invention proposes is used for water-cooled nozzle, comprises the steps:

[0027] S1. Raw materials are heated to a molten state to obtain a liquid alloy, wherein the components of the liquid alloy include: C: 0.25%, Cr: 1.2%, Al: 0.6%, Mg: 1.2%, Zr: 0.3%, Ni: 0.4%, Mn: 1.3%, Mo: 0.08%, V: 0.13%, Co: 0.03%, Ga: 0.05%, Ti: 1.5%, Si: 0.8%, and the rest is Fe; then cast to get billets;

[0028] S2. Raise the temperature of the billet to 650°C at a heating rate of 5°C / min, keep it warm for 2 hours, then raise it to 880°C at a heating rate of 1.5°C / min, keep it warm for 55 minutes, then raise the temperature to 980°C, keep it warm for 4 hours, and then oil-cool to 230°C, then raise the temperature to 520°C, keep warm for 1h, and air cool to room temperature;

[0029] S3. Place the heat-treated billet in acetone for 15 minutes, then ultrasonically clean it for 10 minutes, take it out and wash it,...

Embodiment 3

[0032] A kind of preparation method for the corrosion-resistant steel that the present invention proposes is used for water-cooled nozzle, comprises the steps:

[0033] S1. Raising the temperature of the raw material to a molten state to obtain a liquid alloy, wherein the components of the liquid alloy include: C: 0.15%, Cr: 1.4%, Al: 0.4%, Mg: 1.5%, Zr: 0.23%, Ni: 0.55%, Mn: 1.22%, Mo: 0.11%, V: 0.11%, Co: 0.05%, Ga: 0.03%, Ti: 1.56%, Si: 0.65%, and the rest is Fe; then casting to get billets;

[0034] S2. Raise the temperature of the billet to 630°C at a heating rate of 7°C / min, keep it warm for 2.4h, then raise it to 895°C at a heating rate of 1.2°C / min, keep it warm for 48min, then raise the temperature to 990°C, keep it warm for 3.2h, and then Cool the oil to 250°C, then raise the temperature to 505°C, keep it warm for 1.6h, and air cool to room temperature;

[0035] S3. Place the heat-treated billet in acetone for 12 minutes, then ultrasonically clean it for 14 minutes,...

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Abstract

The invention discloses a preparation method for anticorrosion steel used for a water-cooling spray nozzle. The method comprises the following steps that raw materials are heated into a molten state to obtain a liquid alloy, wherein the liquid alloy comprises, by weight, 0.1-0.25% of C, 1.2-1.5% of Cr, 0.3-0.6% of Al, 1.2-1.6% of Mg, 0.2-0.3% of Zr, 0.4-0.6% of Ni, 1.2-1.3% of Mn, 0.08-0.12% of Mo, 0.1-0.13% of V, 0.03-0.06% of Co, 0.02-0.05% of Ga, 1.5-1.6% of T, 0.6-0.8% of Si and the balance Fe; a steel billet is obtained through casting; heat treatment is conducted; boriding is conducted; and the steel billet subjected to heat treatment and boriding is coated with a conversion film.

Description

technical field [0001] The invention relates to the technical field of water-cooling nozzle materials, in particular to a method for preparing corrosion-resistant steel for water-cooling nozzles. Background technique [0002] Water-cooling equipment in the metallurgical field is often used for heat treatment such as quenching to strengthen the resulting alloy, so the water-cooling equipment is required to have excellent high temperature resistance. The coolant in water cooling is often water or salt solution, which is easy to rust the surface of the water cooling equipment, so the water cooling equipment also needs to have high corrosion resistance. The alloy will rub against the water-cooling equipment during the water-cooling process, so the water-cooling equipment also needs to have strong wear resistance. [0003] Water-cooling equipment materials in the prior art often have insufficient corrosion resistance, and a new corrosion-resistant steel material is needed for wa...

Claims

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Application Information

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IPC IPC(8): C22C38/18C22C38/06C22C38/14C22C38/10C22C38/08C22C38/04C22C38/12C22C38/02C21D6/00C23C8/70C23C22/34
CPCC21D6/00C22C38/002C22C38/02C22C38/04C22C38/06C22C38/105C22C38/12C22C38/14C22C38/18C23C8/70C23C22/34C23C2222/20
Inventor 梁晓杨正超沙思延
Owner 滁州帝邦科技股份有限公司
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