Method for measuring corrosion resistance of cutting fluid

A cutting fluid and anti-corrosion technology, applied in the preparation of test samples, weather resistance/light resistance/corrosion resistance, measuring devices, etc., to achieve fast and accurate measurement results, accurate test results, and stable performance

Inactive Publication Date: 2017-08-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on the influence of cutting fluid on the corrosion performance of steel has been relatively mature, but the focus is still on the metal material itself.

Method used

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  • Method for measuring corrosion resistance of cutting fluid
  • Method for measuring corrosion resistance of cutting fluid
  • Method for measuring corrosion resistance of cutting fluid

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0029] Analysis and determination method - fully synthetic water-based cutting fluid;

[0030](1) Production of working electrode: QT400-18 ductile iron sample is processed into a cube of 10mm×10mm×10mm as the working electrode. After cold mounting, the five surfaces are isolated from the solution, and only one surface is left in contact with the solution as the electrochemical corrosion working surface. This surface is wet-ground with SiC sandpaper, and the sandpaper is finally as fine as 1500#, then cleaned with distilled water, and air-dried with a hair dryer.

[0031] (2) Corrosive medium solution preparation: configure one of the 3.5% NaCl solution corrosive medium, according to the ratio of 5%, 10%, 20%, 40%, measure 10ml, 20ml, 40ml, 80ml cutting fluid with a measuring cylinder respectively, and stir Slowly add to the prepared 200ml NaCl solution, and the final mixed solution is used as the electrochemical corrosion medium.

[0032] (3) Three-electrode system construct...

specific Embodiment 2

[0040] Analysis and determination method - semi-synthetic cutting fluid 40ml;

[0041] (1) Production of working electrode: QT400-18 ductile iron sample is processed into a cube of 10mm×10mm×10mm as the working electrode. After cold mounting, the five surfaces are isolated from the solution, and only one surface is left in contact with the solution as the electrochemical corrosion working surface. This surface is wet-ground with SiC sandpaper, and the sandpaper is finally as fine as 1500#, then cleaned with distilled water, and air-dried with a hair dryer.

[0042] (2) Corrosion medium solution preparation: configure one of the 3.5% NaCl solution corrosion medium, according to the optimal ratio of 20%, measure 40ml of fully synthetic water-based cutting fluid with a graduated cylinder, and slowly add it to the prepared 200ml NaCl solution while stirring , and the final mixed solution is used as an electrochemical corrosion medium.

[0043] (3) Three-electrode system construct...

specific Embodiment 4

[0056] Analysis and determination method, the reproducibility of the determination of the polarization resistance Rp of the emulsified cutting fluid;

[0057] (1) the making of working electrode is with the step (1) of embodiment one;

[0058] (2) Corrosion medium solution preparation: configure one of the 3.5% NaCl solution corrosion medium, according to the optimal ratio of 20%, measure 40ml emulsified cutting fluid with a measuring cylinder, and slowly add it to the prepared 200ml NaCl solution while stirring, and finally get The mixed solution is used as the electrochemical corrosion medium.

[0059] (3) The three-electrode system is set up with the step (3) of Embodiment 1;

[0060] (4) The setting of electrochemical workstation working conditions and working parameters is the same as the step (4) of embodiment one;

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Abstract

The invention belongs to the technical field of analysis and test of corrosion resistance of cutting fluid, and discloses a method for measuring the corrosion resistance of cutting fluid. The method comprises the following steps: mixing a 3.5 percent NaCl solution with a sample according to a certain proportion; stirring and mixing uniformly through ultrasonic oscillation; measuring the corrosion resistance of the cutting fluid under the stable working condition of a conventional three-electrode electrochemical workstation. The method specifically comprises experimental condition determination, an analyzing-detecting method and corrosion polarization resistance measurement. In the method, the 3.5 percent NaCl solution and a cutting fluid sample are uniformly mixed, and a mixture is taken as an electrochemical corrosion medium to measure the corrosion resistance of the cutting fluid under the optimal working condition of the three-electrode electrochemical workstation. The method has the advantages of easiness and convenience in operation, short detection time, capability of meeting the environmental protection requirement and the requirement on measurement of the corrosion resistance of the cutting fluid, low cost on measurement of the corrosion resistance, high stability and accurate measurement result.

Description

technical field [0001] The invention relates to the technical field of analysis and testing of the anti-corrosion performance of bitumen cutting fluid, in particular to a method for measuring the anti-corrosion performance of cutting fluid. Background technique [0002] In order to ensure the smooth progress of the machining process of metal materials, cutting fluid is a commonly used and necessary auxiliary liquid. It is necessary to use cutting fluid in metal punching and other processing processes, which is of great help to metal cutting work. There are many functions of cutting fluid, among which the four major functions of lubrication, rust prevention, cooling and cleaning are the most important, so it can prolong the service life of the tool, prevent the corrosion of metal parts, thereby take away the heat generated during the processing, and effectively remove the parts. And chips and dust on the tool surface, improve processing quality and increase production efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/02G01N1/38
CPCG01N17/02G01N1/38G01N2001/386
Inventor 余新泉叶长强张友法陈锋
Owner SOUTHEAST UNIV
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