Detection method of holding force of vitrified-bond corundum abrasive tool

A vitrified bond and detection method technology, applied in the field of abrasives and abrasive tools, can solve the problem that the holding force cannot be directly measured, and achieve the effect of easy operation and accurate measurement results

Inactive Publication Date: 2019-01-18
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for detecting the holding force of ceramic bond on abrasive grains, realize the regulation and control of the structure and performance of the abrasive tool by adjusting the holding force, obtain an abrasive tool with suitable holding force, and solve the problem that the holding force cannot be directly measured provide theoretical guidance for the preparation of high-efficiency, high-speed, high-precision abrasive tools

Method used

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  • Detection method of holding force of vitrified-bond corundum abrasive tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Assemble the mold and put in 15 grams of Al 2 O 3 -Na 2 O-B 2 O 3 -SiO 2 The basic ceramic bond is pressed into a ceramic bond block under a pressure of 40Mpa.

[0025] b. Place a single corundum abrasive grain with a particle size of 0.1 mm in the middle of the binder block in step a.

[0026] c. Put the above sample in a muffle furnace for curing, that is, heat up from room temperature to 250°C at a heating rate of 5°C / min and keep it for 1 hour, and heat up to 250°C and keep it warm at a heating rate of 4.5°C / min For 2 hours, the temperature was increased to 720°C at a temperature increase rate of 5.5°C / min, and the temperature was kept for 2.5 hours, and then cooled to room temperature to obtain a ceramic bond corundum sample block.

[0027] d. Grind and polish the above samples.

[0028] e. Fix the above sample on the desktop, and the section with the smallest bond block area is vertical to the desktop, that is, the sequence in the field of view is bond-abrasive particl...

Embodiment 2

[0031] a. Assemble the mold and put in 15 grams of Al 2 O 3 -Na 2 O-B 2 O 3 -SiO 2 The basic ceramic bond is pressed into a ceramic bond block under a pressure of 40Mpa.

[0032] b. Place a single corundum abrasive grain with a particle size of 0.2 mm in the middle of the binder block in step a.

[0033] c. Put the above sample in a muffle furnace for curing, that is, heat up from room temperature to 250°C at a heating rate of 5°C / min and keep it for 1 hour, and heat up to 250°C and keep it warm at a heating rate of 4.5°C / min For 2 hours, the temperature was increased to 720°C at a temperature increase rate of 5.5°C / min, and the temperature was kept for 2.5 hours, and then cooled to room temperature to obtain a ceramic bond corundum sample block.

[0034] d. Grind and polish the above samples.

[0035] e. Fix the above sample on the desktop, and the section with the smallest bond block area is vertical to the desktop, that is, the sequence in the field of view is bond-abrasive particl...

Embodiment 3

[0038] a. Assemble the mold and put in 15 grams of Al 2 O 3 -Na 2 O-B 2 O 3 -SiO 2 The basic ceramic bond is pressed into a ceramic bond block under a pressure of 40Mpa.

[0039] b. Place a single corundum abrasive grain with a particle size of 0.3 mm in the middle of the binder block in step a.

[0040] c. Put the above sample in a muffle furnace for curing, that is, heat up from room temperature to 250°C at a heating rate of 5°C / min and keep it for 1 hour, and heat up to 250°C and keep it warm at a heating rate of 4.5°C / min For 2 hours, the temperature was increased to 720°C at a temperature increase rate of 5.5°C / min, and the temperature was kept for 2.5 hours, and then cooled to room temperature to obtain a ceramic bond corundum sample block.

[0041] d. Grind and polish the above samples.

[0042] e. Fix the above sample on the desktop, and the section with the smallest bond block area is vertical to the desktop, that is, the sequence in the field of view is bond-abrasive particl...

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Abstract

The invention discloses a detection method of holding force of a vitrified-bond corundum abrasive tool, and belongs to the technical fields of abrasive materials and abrasive tools. The method comprises the main steps of: assembling a mold, introducing a vitrified bond, and carrying out extruding to form a vitrified-bond block; placing a single corundum abrasive grain at a precisely middle position of the bond block; carrying out curing and polishing; fixing a test sample on a table surface, wherein a section of the bond block with a smallest area is perpendicular to the table surface, that is, an order in a field-of-view is bond-abrasive grain from a left to a right; and applying a vertical load of the same direction to the abrasive grain, namely applying vertical downward force to the exposed corundum abrasive grain, and using a tensiometer to record of a value of the applied load the abrasive grain in detaching from the bond. The method has the advantages that operations are easy, time and labor are saved, and test results are accurate; and the difficult problem that holding force is difficult to directly measure is solved, and theoretical guidance is provided for preparing abrasive tools of high efficiency, high speed and high precision.

Description

Technical field [0001] The patent of the present invention relates to the technical field of abrasives, in particular to a method for detecting the holding force of a ceramic bond to corundum abrasive grains. Background technique [0002] Vitrified bond abrasives have the characteristics of high strength, good heat resistance, resistance to clogging during grinding, and small thermal expansion, and are widely used in various fields. With the development of science and technology, the abrasives industry also has higher requirements. In the future development process, ceramic bond abrasives have better application prospects due to their unique and excellent properties, but their shortcomings are abrasives In the process of use, the bonding agent has insufficient holding force on the abrasive particles, which causes the abrasive particles to fall off easily. [0003] The performance of the abrasive tool mainly includes the hardness of the abrasive tool, the strength of the abrasive t...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N1/28G01N15/00
CPCG01N1/286G01N3/24G01N15/00G01N2001/2866
Inventor 栗正新王丽晶余威
Owner HENAN UNIVERSITY OF TECHNOLOGY
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