Abrasive material performance evaluation index and test method thereof

A testing method and grinding performance technology, which is applied in the field of abrasives and abrasive tools, can solve problems such as the lack of testing methods, and achieve stable and reliable test results, simple procedures, and easy control

Pending Publication Date: 2021-07-27
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] In order to solve the problem that the evaluation index and its test method for comprehensively characterizing abrasive performance are missing, the present invention proposes an evaluation index for abrasive performance and a test method thereof, using abrasive grinding performance as a comprehensive evaluation index for characterizing abrasive performance. Abrasive grinding performance refers to The abrasive sample and the grinding medium material are ground together under dynamic conditions, and the grinding performance of the sample is characterized by the loss ratio of the grinding medium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Brown corundum grinding performance characterization method, the steps are as follows:

[0043] (1) Take 1000g brown corundum abrasive sample with particle size of F16 (no need to sieve), dry it in an oven at 110°C for 1 hour, and then put it directly into the ball mill jar;

[0044] (2) Put steel balls with a diameter of 20mm, a mass of 200g, and a hardness (HRC=45-50) into the ball mill jar;

[0045] (3) Use the ball mill toughness test device to mill for a certain period of time (10min);

[0046] (4) Take off the ball mill jar, take out the steel ball and clean it, and weigh its mass m 1 =199.973g;

[0047] (5) Repeat the above steps to weigh the mass of the steel ball m 2 =199.977g;

[0048] (6) Calculate and characterize the ball milling toughness of abrasive: abrasive ball milling toughness=1-(199.973+199.977) / 2*1000*100%=0.012%.

Embodiment 2

[0050] A method for characterizing the abrasive performance of alumina, the steps are as follows:

[0051] (1) Take 500g of alumina abrasive sample with a particle size of 46# (no need to sieve), dry it in an oven at 110°C for 30 minutes, and then put it directly into a ball mill jar;

[0052] (2) Put steel balls with a diameter of 8mm, a mass of 100g, and a hardness (HRC=45-50) into the ball mill;

[0053] (3) Use the ball mill toughness test device to mill for a certain period of time (5min);

[0054] (4) Take off the ball mill jar, take out the steel ball and clean it, and weigh its mass m 1 =99.992g;

[0055] (5) Repeat the above steps to weigh the mass of the steel ball m 2 =99.994g;

[0056] (6) Calculate and characterize the ball milling toughness of the abrasive: abrasive ball milling toughness=1-(99.992+99.994) / 2*100*100%=0.007%.

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Abstract

The invention provides an abrasive material performance evaluation index and a test method thereof, which are used for grinding an abrasive material by using a steel ball or a ceramic ball and testing the quality or size change of the steel ball or the ceramic ball. In the ball milling process, the steel ball grinds the abrasive material, and meanwhile, the abrasive material grinds the steel ball (the loss of the ball milling tank is neglected) so that the quality or size change of the steel balls or ceramic balls which are uniform in material, identical in size and controllable in hardness is utilized to characterize the grinding performance of the abrasive material effectively. The larger the size or mass change of the steel ball or the ceramic ball is, the higher the grinding performance of the abrasive material is.

Description

technical field [0001] The invention relates to the field of abrasive abrasives, in particular to an abrasive performance evaluation index and a testing method thereof. Background technique [0002] my country is a big producer of abrasives. Due to its high hardness, abrasives can process materials with various hardnesses, and are widely used in the field of abrasive tools and mechanical grinding and polishing, and are known as "industrial teeth". The material, particle size, shape, single particle compressive strength and ball milling toughness of abrasives play a key role in their application performance. Therefore, abrasive manufacturers and users have strict control requirements for these indicators. Among them, the single-particle compressive strength refers to the test force required for the complete crushing of a single-particle abrasive in a static state, which is related to the particle shape, surface state, crushing method, crystallization state, etc. of the abras...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N5/00
CPCG01N3/56G01N5/00
Inventor 邢波任冠青张子龙郭雪菲
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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