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Water-soluble quenching medium for hot die steel

A technology of quenching medium and hot die steel, applied in the direction of quenching agent, manufacturing tools, heat treatment equipment, etc., can solve the problems of flammability, poor environmental protection performance, high cost of quenching oil, etc., and achieve the effect of solving high cost and low cost

Inactive Publication Date: 2012-04-18
LIAONING HAIMING CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of quenching oil is high in cost, flammable, and poor in environmental performance.

Method used

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  • Water-soluble quenching medium for hot die steel
  • Water-soluble quenching medium for hot die steel
  • Water-soluble quenching medium for hot die steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A polyalkylene glycol (molecular weight: 22000) 35 parts

[0034] B Polyvinylpyrrolidone (molecular weight: 360,000) 10 parts

[0035] C rust inhibitor 5 parts

[0036] D Fungicide 2×10 -4 share

[0037] E PH adjuster 2 parts

[0038] F Settling agent 0.5 part

[0039] G defoamer 0.2 part

[0040]47 parts of H water

[0041] Because 4Cr5MoSiV1 contains high alloy and silicon, its hardenability is very good, which requires that the polyalkylene glycol component in the medium that affects the cooling rate in the high temperature area is slightly lower, and the cooling rate in the low temperature area is affected. The content of polyvinylpyrrolidone is appropriately increased to ensure that the quenching effect of this medium on 4Cr5MoSiV1 reaches an ideal state.

Embodiment 2

[0043] A polyalkylene glycol (molecular weight: 22000) 45 parts

[0044] B Polyvinylpyrrolidone (molecular weight: 360,000) 5 parts

[0045] C rust inhibitor 2 parts

[0046] D Fungicide 2×10 -4 share

[0047] E PH adjuster 5 parts

[0048] F Settling agent 0.5 part

[0049] G defoamer 0.2 part

[0050] 42 parts of H water

[0051] 5CrNiMo hot work die steel has to withstand repeated heating and cooling due to its nickel content and working conditions, and requires good heat resistance, wear resistance and hardenability, so the content of polyalkylene glycol is higher, and the medium The hardenability should also be better to ensure that 5CrNiMo has high hardenability, and the uniformity of 5CrNiMo is higher.

Embodiment 3

[0053] A polyalkylene glycol (molecular weight: 22000) 40 parts

[0054] B polyvinylpyrrolidone (molecular weight: 360,000) 8 parts

[0055] C rust inhibitor 3 parts

[0056] D Fungicide 2×10 -4 share

[0057] E PH adjuster 3 parts

[0058] F Settling agent 0.5 part

[0059] G defoamer 0.2 part

[0060] 45 parts of H water

[0061] The hardenability of 5CrMnMo hot work die steel is relatively poor, so a higher content of polyalkylene glycol quenching agent is required to ensure that the die has high mechanical properties and high uniformity after quenching.

[0062] The raw material composition of the above-mentioned embodiment is the weight ratio.

[0063] Table 1 Comparison of typical values ​​of technical indicators

[0064]

[0065] Note:

[0066] Appearance: Visual inspection. PH value: GB / T9724. Kinematic viscosity: GB / T265. Flash point: GB / T3536. Freezing point: GB / T3535. Density: GB / T1884. Refractive index: GB / T614. ...

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Abstract

The invention discloses a water-soluble quenching medium for hot die steel. The water-soluble quenching medium is prepared by mixing polyalkylene glycol, polyvinyl pyrrolidone, rust inhibitor, bactericide, pH regulator, settling agent, defoaming agent and water uniformly in a ratio. The water-soluble quenching medium is low in production cost, non-flammable and environment-friendly. The water-soluble quenching medium replaces oil quenching media, and fully meets the quenching requirements of the hot die steel such as 4Cr5MoSiV1, 5CrMnMo and 5CrNiMo.

Description

technical field [0001] The invention relates to a water-soluble quenching medium for heat treatment, which is characterized by a water-soluble quenching medium used for hot die steel. Background technique [0002] The use of water-soluble quenching media in heat treatment is becoming more and more popular, and the most representative is PAG-type water-soluble quenching medium. It can meet the requirements of industrial production in terms of hardness, metallographic structure, tensile strength, yield strength, deformation, etc., such as heat treatment of automobile crankshafts, half shafts, front axles, agricultural machinery, etc. [0003] However, ordinary PAG water-soluble quenching medium also has limitations and is not suitable for quenching of hot die steel, such as 4Cr5MoSiV1, 5CrNiM O , Quenching treatment of 5CrMnMo hot die steel. Quenching oil is still used in the quenching heat treatment of hot die steel, and there is no public report on the application of PAG w...

Claims

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Application Information

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IPC IPC(8): C21D1/60
Inventor 姜聚满王莎莎杨秀成夏丹凤李佩晓隋明来
Owner LIAONING HAIMING CHEM PROD
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