Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of glycerol aqueous solution quenching cooling medium and preparation method thereof

A technology of cooling medium and glycerin, which is applied in the direction of quenching agent, manufacturing tools, heat treatment equipment, etc., can solve the problems of easy aging, high price, and insufficient environmental protection of the working environment, so as to reduce deformation and cracking, and the raw materials are simple and easy to obtain, Inexpensive to prepare

Active Publication Date: 2019-02-15
深圳市先力得热处理有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, the traditional quenching medium includes water, quenching oil, molten salt and alkali, polymer water-soluble quenching agent, etc., among which water is the most common one in the quenching medium. In the quenching process, water has a strong role as a quenching medium. The cooling rate can pass through the pearlite transformation zone at a very fast quenching rate, thereby avoiding the formation of non-martensitic structures during the quenching process, causing quenching soft spots, and affecting the mechanical properties of the workpiece. However, due to the fast cooling rate of water, As a result, in the martensitic transformation temperature region, the faster cooling rate brings excessive quenching stress, which often causes deformation and cracking of the workpiece
The common quenching oil of oil quenching medium is organic oil, bright quenching oil, oil as a quenching medium greatly slows down the cooling rate in the quenching process, and the workpiece after oil quenching hardly occurs cracking and deformation, but its shortcomings are also obvious, because The slow cooling rate of oil during the quenching process often leads to the formation of some pearlite structures in the pearlite transformation stage, resulting in soft spots in quenching, which is difficult to meet the quenching requirements of high-quality mechanical parts and components, and is accompanied by fire and thick smoke during the quenching process , the working environment is not environmentally friendly
The most commonly used quenching medium for polymers is PAG. This kind of aqueous solution has a good quenching effect, but compared with other quenching mediums, this kind of polymer polymer quenching medium has the disadvantages of easy aging and frequent maintenance. At the same time, the high price is another shortcoming of this kind of quenching medium.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of glycerol aqueous solution quenching cooling medium and preparation method thereof
  • A kind of glycerol aqueous solution quenching cooling medium and preparation method thereof
  • A kind of glycerol aqueous solution quenching cooling medium and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the volume percentage of 5:95, glycerol (chemically pure) and distilled water are made into glycerin aqueous solution, and the following additives are added (by weight percentage of glycerol aqueous solution): 0.04% anti-aging agent; 0.1% anti-rust agent; 0.01% defoamer; 0.4% cooling rate regulator. Above-mentioned anti-aging agent is salicylic acid; Antirust agent is borax; Defoamer is Polyethylene Glycol (average molecular weight is 400); Cooling rate adjuster is polyvinylpyrrolidone (average molecular weight is 1300000), uniformly mixed by mechanical stirring Prepared as a quenching cooling medium and allowed to stand for 24 hours.

[0021] Three different quenching media were tested with a type quenching cooling rate tester. It was found that in the high temperature zone (pearlite transformation stage), the cooling rate of the 5% glycerol quenching medium was faster than that of quenching oil; in the low temperature zone (martensite) transformation sta...

Embodiment 2

[0024] According to the volume percentage of 3:97, glycerin (chemically pure) and distilled water are made into glycerin aqueous solution, and the following additives are added (by weight percentage of glycerin aqueous solution): 0.04% anti-aging agent; 0.1% anti-rust agent; 0.01% defoamer; 0.4% cooling rate regulator. Above-mentioned anti-aging agent is salicylic acid; Antirust agent is borax; Defoamer is Polyethylene Glycol (average molecular weight is 400); Cooling rate adjuster is polyvinylpyrrolidone (average molecular weight is 1300000), uniformly mixed by mechanical stirring Prepared as a quenching cooling medium and allowed to stand for 24 hours.

[0025] Three different quenching media were tested with a type quenching cooling rate tester. It was found that in the high temperature zone (pearlite transformation stage), the cooling rate of the 3% glycerin quenching medium was faster than that of quenching oil; in the low temperature zone (martensite) transformation sta...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a glycerin water solution quenching cooling medium. The quenching medium adopts glycerin as a main component of water solution; and few other components are added to form a novel water base organic compound quenching cooling medium with quicker cooling speed compared with quenching oil in the carbon steel perlitic transformation phase and with slower cooling speed compared with water in the martensitic transformation phase. The novel quenching medium has the following characteristics: the novel quenching medium not only can keep quicker cooling speed in the quenching process, but also can reduce the deformation and the cracking of parts, is free of smoke, fire and poison in the whole quenching process, is environment-friendly, and is low in preparation cost.

Description

technical field [0001] The invention belongs to the technical field of design and preparation of a heat treatment quenching cooling medium, and in particular relates to a novel quenching cooling medium of a water-based simple organic compound. Background technique [0002] The selection and application of quenching medium in the heat treatment process directly affects the quenching quality and mechanical properties of mechanical parts and workpieces. The ideal quenching cooling medium should have a fast cooling rate in the high temperature zone and a relatively gentle cooling rate in the low temperature zone. As we all know, the traditional quenching medium includes water, quenching oil, molten salt and alkali, polymer water-soluble quenching agent, etc., among which water is the most common one in the quenching medium. In the quenching process, water has a strong role as a quenching medium. The cooling rate can pass through the pearlite transformation zone at a very fast q...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/60
CPCC21D1/60
Inventor 黎颖揭晓华陈雄飞张留艳麦永津
Owner 深圳市先力得热处理有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products