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High polymer quenching solution, preparation thereof and quenching method for steel products

A technology of quenching liquid and polymer, applied in the field of polymer quenching liquid, can solve problems such as inability to meet

Active Publication Date: 2010-12-08
IND TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the organic polymer quenching liquid has the advantages of both water quenching liquid and oil quenching liquid, it still cannot meet the needs of the industry, so a new type of quenching liquid that can control the quenching curve is needed

Method used

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  • High polymer quenching solution, preparation thereof and quenching method for steel products
  • High polymer quenching solution, preparation thereof and quenching method for steel products
  • High polymer quenching solution, preparation thereof and quenching method for steel products

Examples

Experimental program
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preparation example Construction

[0023] The present invention also provides a method for preparing a polymer quenching liquid, comprising (a) providing nano-inorganic powder, and uniformly dispersing the nano-inorganic powder in water, and (b) adding a water-soluble polymer to the nano- Inorganic powder in water to form polymer quenching liquid. In addition, in step (a), a heating procedure may be performed to accelerate the dispersion of the inorganic powder in water.

[0024] In another embodiment, it also includes adding functional additives such as anti-corrosion to the high-fraction quenching liquid after step (b), so as to increase the performance of the quenching liquid.

[0025] The present invention also provides a method for quenching steel, comprising (a) providing steel, (b) heat-treating the steel, and (c) placing the steel in the quenching liquid of the present invention to perform a quenching procedure, in which In the quenching procedure, the maximum cooling rate (maximum cooling rate) of the...

Embodiment 1

[0041] Embodiment 1. Influence of inorganic powder on quenching curve

[0042] The process of this example is the same as that of Comparative Example 1, except that the quenching liquid is changed to contain 15wt% SQ1500 polymer and 5wt%, 10wt%, 15wt%, 20wt% and 25wt% inorganic powder PK812 respectively. Please refer to Figure 3A-3B And Table 3, the maximum cooling rate and the quenching rate at 300°C will decrease with the increase of inorganic powder, and the temperature at start of convection will increase from 420°C to above 670°C, and the maximum cooling The rate of temperature will increase with the increase of inorganic powder.

[0043] Table four, the quenching characteristics of the present embodiment quenching liquid

[0044]

[0045]

[0046]

Embodiment 2

[0047] Example 2. Influence of Inorganic Powder and High Molecular Content on Quenching Curve

[0048] The process of this embodiment is the same as that of Comparative Example 1, except that the quenching liquid is changed to contain 15, 20 and 25 wt% of SQ1500 polymer and 0.5 wt% and 1.0 wt% of inorganic powder PK812 respectively. Please refer to Figure 4 And Table 4, the maximum cooling rate and the quenching rate at 300°C will decrease with the increase of inorganic powder PK812, and the temperature of the maximum cooling rate will increase with the increase of inorganic powder.

[0049] Table four, the quenching characteristics of the present embodiment quenching liquid

[0050]

[0051]

[0052]

[0053] Analysis of actual steel grades

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Abstract

The invention provides a macromolecule quenching liquid which comprises nanometer inorganic powder, a water-soluble polymer and water, wherein, the weight ratio of the nanometer inorganic powder, the water-soluble polymer and the water is 0.05 : 1 to 5 : 100; the quenching speed in the quenching procedure can be adjusted by changing the composition and the proportion of the quenching liquid, thereby further adjusting the characteristics of steel.

Description

【Technical field】 [0001] The invention relates to a quenching liquid, and in particular to a polymer quenching liquid which can regulate a quenching curve. 【Background technique】 [0002] In the iron and steel metallurgy industry, in order to improve the various properties of the material, the metallurgical procedure of heat treatment is usually applied to the material. In the metallurgy process, the steel is heated to 800 to 1000°C, and thermal homogenization is carried out at this temperature. , and use an appropriate quenching medium to quench the steel. Quenching is a step of rapidly cooling high-temperature steel using a quenching liquid containing a quenching medium that can absorb a large amount of heat energy, such as air, water, brine, oil or polymer solution. [0003] In the traditional metallurgical industry, the most commonly used quenching medium is water or oil. Among them, water or brine has the advantages of convenient use, cheapness, and non-toxicity, but i...

Claims

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Application Information

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IPC IPC(8): C21D1/60C21D1/18
Inventor 何勇雄林丽桂郭文法
Owner IND TECH RES INST
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