Method for calibrating Rockwell hardometer

A technology of Rockwell hardness tester and calibration method, which is applied in the direction of strength characteristics, measuring devices, instruments, etc., can solve the problems of inconvenient operation and complicated calibration method of Rockwell hardness tester, and achieve the effect of simple method and easy operation

Inactive Publication Date: 2017-12-12
安吉元融仪器仪表检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under specified conditions, in order to determine the relationship between the quantity value indicated by the measuring instrument or measuring system, or the quantity value represented by the physical measuring tool or reference material, and the corresponding quantity value reproduced by the standard, currently The calibration method of the Rockwell hardness tester is complicated and inconvenient to operate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for calibrating a Rockwell hardness tester, comprising the following steps:

[0021] (1) Select a cylindrical pure copper test block, and polish the upper and lower surfaces of the pure copper until smooth and flat; (2) Soak the cotton cloth in the cleaning solution, take it out and wring it out, and scrub the top surface of the lead screw and the surface of the hardness tester. The upper and lower ends of the workbench, then rinse the cotton cloth in clean water and wring it dry, then scrub the top surface of the screw and the upper and lower ends of the workbench again. Specifically, the cleaning solution is prepared by cleaning agent and water at a ratio of 50:1; (3) Place the workbench on the screw table; (4) Put the pure copper test block on the workbench horizontally, turn the hand wheel to make the workbench rise slowly and squeeze the indenter until the small pointer in the indicator plate points to Stop applying force to the hand wheel after the red do...

Embodiment 2

[0023] A method for calibrating a Rockwell hardness tester, comprising the following steps: (1) selecting a cylindrical pure copper test block, and polishing the upper and lower surfaces of the pure copper until it is smooth and flat; (2) soaking the cotton cloth in cleaning solution and taking Wring it out, scrub the top surface of the lead screw of the hardness tester and the upper and lower ends of the workbench, then rinse the cotton cloth in clean water and wring it out, and then wipe the top surface of the lead screw and the upper and lower ends of the workbench again. (3) Place the workbench on the screw table; (4) Place the pure copper test block horizontally on the workbench, turn the handwheel to make the workbench rise slowly and Squeeze the indenter until the small pointer in the indicator plate points to the red dot and stop applying force to the hand wheel; (5) Rotate the indicator shell so that the large pointer in the indicator plate coincides with the long engr...

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PUM

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Abstract

The invention discloses a method for calibrating a Rockwell hardometer. The method comprises the following steps: (1) selecting a cylindrical pure copper test block, polishing the upper surface and the lower surface of pure copper to be smooth and flat; (2) placing cotton cloth in cleaning fluid, soaking, taking out, wringing out and scrubbing the top surface of a lead screw table of a hardometer and the upper and lower end surfaces of a workbench, then placing the cotton cloth in clear water, cleaning, wringing out and scrubbing the surface of the lead screw table and the upper and lower end surfaces of the workbench again; (3) placing the workbench on the lead screw table; (4) horizontally placing the pure copper test block on the workbench, rotating a hand wheel to slowly raise the workbench and extrude a pressure head and stopping applying the force to the hand wheel after a small pointer in an indicating dial points to a red dot. The method disclosed by the invention has the benefits that the indication error can be determined through preparing the pure copper test block, measuring hardness values of a plurality of measuring points on the pure copper test block by using the Rockwell hardometer and then calculating and comparing an average hardness with a standard hardness value of the pure copper, and further, the purpose of calibrating the Rockwell hardometer is achieved; the method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of instrument calibration, and in particular relates to a method for calibrating a Rockwell hardness tester. Background technique [0002] Calibration refers to checking machines, instruments, etc. to make them accurate. Under specified conditions, in order to determine the relationship between the quantity value indicated by the measuring instrument or measuring system, or the quantity value represented by the physical measuring instrument or reference material, and the corresponding quantity value reproduced by the standard, currently The calibration method of the Rockwell hardness tester is complicated and inconvenient to operate. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a method for calibrating a Rockwell hardness tester with simple operation. [0004] In order to achieve the above object, the present invention adopts th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/62
CPCG01N3/62
Inventor 张明
Owner 安吉元融仪器仪表检测有限公司
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