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Automatic/semi-automatic measurement method for depth-hardness curve of rolled steel and device thereof

A measurement method and a technology of a measurement device, which are applied in the direction of testing metals, material inspection products, and testing material hardness, etc., can solve problems such as error-prone, affecting the accuracy of results, and low efficiency, so as to improve displacement accuracy, improve work efficiency, The effect of reducing the workload

Inactive Publication Date: 2009-06-10
耐博检测技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] 3. For low hardenability steel, the measuring points need to be staggered, but the distance from the center line is not more than 0.5 mm. It is difficult to adjust and control the positioning accuracy by manual adjustment alone.
[0020] 4. At present, the hardenability control of steel is getting higher and higher, and it is often necessary to carry out full-band control, so more points need to be measured, and the subsequent measurement workload will increase sharply, and the measurement steps will become more cumbersome. It is easy to make mistakes and the efficiency will be very low; due to the need for manual operation, the difference in the operator's proficiency will greatly affect the accuracy of the final result

Method used

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  • Automatic/semi-automatic measurement method for depth-hardness curve of rolled steel and device thereof
  • Automatic/semi-automatic measurement method for depth-hardness curve of rolled steel and device thereof
  • Automatic/semi-automatic measurement method for depth-hardness curve of rolled steel and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Such as figure 1 As shown, the automatic measuring device of the present invention includes a computer 1 , a hardness tester 2 and a specimen clamping mechanism 3 .

[0104] Among them, computer 1 is a computer equipped with software for controlling the plane movement of the specimen clamping mechanism, hardness tester startup control and data reading, and hardness tester 2 is an ordinary desktop hardness tester.

[0105] The computer 1 is electrically connected with the data communication interface (such as RS232 port) on the hardness tester 2, controls the displacement of the specimen clamping mechanism and automatically collects the hardness measurement data into the memory in the computer.

[0106] The specimen clamping mechanism 3 adopts an electric translation platform, which is an existing technology, equipped with a standard RS232 interface, connected with a computer, and can control the displacement through the computer with the control software. The electric ...

Embodiment 2

[0112] Such as figure 2 As shown, in order to realize the semi-automatic measurement device of the present invention, it includes a computer 11, a hardness tester 12, and a specimen clamping mechanism 13.

[0113] Among them, the computer 1 is a computer equipped with special software, the hardness tester 2 is an ordinary desktop hardness tester, and the computer 1 is connected with a special computer interface (such as an RS232 interface) on the hardness tester 2 to collect the hardness measurement data on the computer.

[0114] The displacement and hardness values ​​obtained by the computer 1 can be processed by software to automatically obtain the required measurement curve.

[0115] The specimen clamping mechanism 13 includes a fixed seat 15 and a V-shaped groove 16 , and the V-shaped groove 16 is horizontally matched with the fixed seat 15 . The fixing seat 15 is fixed under the pressure head of the hardness tester, the test piece 6 is fixed on the V-shaped groove 16, a...

Embodiment 3

[0120] Such as image 3 As shown, the specimen clamping mechanism 23 is composed of a fixed seat 25 and a chute 26, the chute 26 and the fixed seat 25 are horizontally slidingly matched, the fixed seat 25 is fixed under the pressure head of the hardness tester, and there is a rectangular groove above the chute 26 , a spring 27 is installed at one end of the groove, and the test piece 6 is put into the groove, and the spring 27 at one end realizes pressing and fixing. The movement of the test piece is realized by manually moving the chute 26 . An electronic displacement measuring device 28 is installed on the fixed frame, and the device has a special-purpose computer interface (such as an RS232 interface), which transmits the displacement data of the specimen movement to the computer;

[0121] Then use the dedicated computer interface (such as RS232 interface) on the hardness tester to transmit the hardness measurement data to the computer.

[0122] The computer software uses...

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Abstract

Provided is an automatic / semi automatic measurement method of steel hardenability curve and a device thereof, through controlling displacement of a standard test bar and hardness measurement of a hardness meter by a computer, meanwhile hardness data obtained by the hardness meter is uploaded to the computer, only a sample is fixed on a sample holder, the computer automatically moves the sample holding mechanism to a corresponding position according to the given measurement position in advance, for automatically measuring the hardness, after testing one test point, the computer sends out displacement control command, goes on measuring the hardness of other places in turn, finally, the computer automatically plots the hardenability curve, and computes the hardness of the special points. The automatic / semi automatic way is adopted to read the measurement data and the data are input to the computer, thereby greatly relieving workload of testers, increasing working efficiency and ensuring accuracy of data.

Description

technical field [0001] The invention relates to the field of heat treatment of metal materials, in particular to the measurement of hardenability curves of steel materials. Background technique [0002] Quenching technology is to austenitize the steel by heating the parts, and then rapidly cool it to obtain a martensite structure. [0003] The hardenability of steel is the characteristic that determines the hardening depth and hardness distribution of steel under specified quenching conditions (it is an inherent property of steel itself). It is usually expressed by the depth of hardened layer that can be obtained under specified quenching conditions (workpiece size, quenching medium). [0004] The depth of the hardened layer is the vertical distance from the surface of the hardened workpiece to the specified hardness value (usually refers to the semi-martensite zone where martensite and non-martensite each account for 50%). [0005] The commonly used methods for determinin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/20G01N3/40G06F17/00
Inventor 章利球
Owner 耐博检测技术(上海)有限公司
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