Method for calibrating Rockwell hardometer

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...

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