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Water-based working liquid for electrical discharge wire cutting and preparation method thereof

An EDM wire and working fluid technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of blackening of the workpiece surface, high-cost market usage, reducing the surface quality of workpiece machining, and achieve low manufacturing cost, easy biological Degradable, inexpensive effect

Inactive Publication Date: 2012-05-02
JIANGYAN HUARUN CHEM FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, the waste emulsion-type working fluid is a kind of industrial wastewater that can be purified, and the main reason is that the purification cost is not easily accepted by users.
Water-based working fluid is a substitute for emulsion-type working fluid. There is no environmental protection problem when using it. The problem is that the price of the main materials contained in water-based working fluid, vegetable oil and synthetic ester, is increasing year by year. The high cost restricts its market usage. one of the main reasons
In addition, the water-based working fluid in the prior art is not suitable for use in areas with high water hardness indicators. The water-based working fluid diluted with hard water will cause the surface of the processed workpiece to turn black, directly reducing the surface quality of the workpiece.

Method used

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  • Water-based working liquid for electrical discharge wire cutting and preparation method thereof
  • Water-based working liquid for electrical discharge wire cutting and preparation method thereof
  • Water-based working liquid for electrical discharge wire cutting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of the wire electric discharge cutting water-based working fluid is carried out according to the following steps:

[0026] (1) Add the triethanolamine measured according to the proportion into the reaction pot and heat it to 80°C±3°C;

[0027] (2) Add the measured powdered boric acid, stir for 8 minutes to 12 minutes and wait for it to dissolve;

[0028] (3) Heat up to 120°C±3°C, and react under this temperature condition for 100 minutes to 140 minutes;

[0029] (4) Cool down to 80°C±3°C, add measured amount of oleic acid and react for 50-70 minutes;

[0030] (5) Cool down to 60°C±3°C;

[0031] (6) Combine the barium petroleum sulfonate dissolved in sodium benzoate in advance with the measured amount of sodium petroleum sulfonate, sodium dodecylsulfonate, nonylphenol polyoxyethylene ether OP-10, Span S-80, fat Alcohol polyoxyethylene ether MOA-15 ​​and sodium fatty alcohol polyoxyethylene etherate AES are mixed together with the remaining water...

Embodiment 1～3

[0034] Examples 1-2 are used in hard water areas, and the components contain hydrolyzed polymaleic anhydride HPMA and hydroxyethylene diphosphonic acid HEDP anti-hard water dispersant. Use CaO to measure the water hardness used, the water hardness in Example 1 is 85 mg / L, and the water hardness in Example 2 is 120 mg / L. The water hardness of Example 3 is 80 mg / L, which belongs to soft water, so hydrolyzed polymaleic anhydride HPMA and hydroxyethylene diphosphonic acid HEDP are omitted from the components. The specific components and proportions of Examples 1-3 are shown in Table 1 below, and the specific process conditions of the preparation method are shown in Table 2.

[0035] Table 1: Specific components and proportioning tables of Examples 1 to 3

[0036]

Embodiment 1

[0039] The products of Examples 1 to 3 are all in yellowish transparent liquid, the pH value of Example 1 is 7.5; the pH value of Example 2 is 8.2; the pH value of Example 3 is 7.8. The products of Examples 1 to 3 are all diluted with water, and after dilution, they can be used for cooling in turning, grinding, milling and sawing in addition to being used for cooling in wire electric discharge cutting. Both the components of Example 1 and Example 2 contain anti-hard water dispersants, which can be directly diluted with local water in areas with relatively hard water quality, instead of using deionized water. This effect is not only convenient for use in hard water areas, but also saves costs , the most important thing is to use it in hard water areas to avoid blackening of the workpiece processing surface, no burns, no pits, no pitting. The components of the invention do not contain mineral oil or vegetable oil, are non-toxic, have no irritating odor, are easy to biodegrade, a...

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Abstract

The invention discloses a water-based working liquid for electrical discharge wire cutting, which comprises the following components by weight percent: triethanolamine, boric acid, oleic acid, polyethyleneglycol PEG-600, petroleum sodium sulfonate, petroleum barium sulfonate, sodium dodecyl sulfate, nonylphenol ethoxylate OP-10, fatty alcohol-polyoxyethylene ether MOA-15, Span S-80, detergent 6501, sodium alcohol ether sulphate AES, hydrolytic polymaleic anhydride HPMA, 1-hydroxy ethylidene-1,1-diphosphonic acid HEDP, glycerol, ethanol, sodium benzoate and water. The invention further relates to a preparation method of the water-based working liquid for electrical discharge wire cutting. The water-based working liquid with the pH ranging from 7.5 to 8.0 is yellowish and transparent, free from toxicity and irritating odor, and easy for biodegradation, and BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand) and other indexes in discharged sewage are in compliancy with the emission standards for environmental protection. The water-based working liquid disclosed by the invention can ensure the bright processed surface of workpiece even when being used in hard water regions.

Description

technical field [0001] The invention relates to a working fluid for metal cutting and a preparation method thereof. Specifically, the invention relates to a water-based working fluid for wire electric discharge cutting and a preparation method thereof, belonging to fine chemical preparation technology. Background technique [0002] Wire electric discharge cutting is a process used for precision cutting of metal materials. Molybdenum wire must provide good cooling and lubrication conditions when performing electric erosion cutting to improve the surface quality of the workpiece. Commercially available EDM working fluids mainly include emulsion type and water-based type products. Although these two types of products are synthetic products, they have good cooling performance and lubricating performance, which can fully meet the requirements of wire EDM. cooling and lubrication conditions. However, these two types of working fluids have exposed some shortcomings in use, which h...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10M177/00C10N40/24
Inventor 万柏森程爱民
Owner JIANGYAN HUARUN CHEM FACTORY
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