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Vickers hardness test system and method

A Vickers hardness and detection system technology, applied in the direction of testing material hardness, image data processing, instruments, etc., can solve the problems of data uncertainty, eye fatigue, etc., and achieve the effect of improving accuracy

Inactive Publication Date: 2012-03-28
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Visual inspection will cause eye fatigue, resulting in uncertainty in the measured data

Method used

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  • Vickers hardness test system and method

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Embodiment Construction

[0014] To facilitate understanding, some terms appearing in the text are explained as follows:

[0015] Corner point: the intersection point when two straight lines form an angle.

[0016] Such as figure 1 Shown is a functional block diagram of a preferred embodiment of the Vickers hardness testing system of the present invention. The hardness testing machine 10 is connected to a computer 20, and the computer 20 is also connected to a display device 30. The Vickers hardness testing system 40 is installed and running on the computer 20.

[0017] A Charge Coupled Device (CCD) 11 is installed on the Z axis of the hardness testing machine 10, and an industrial optical lens (not shown in the figure) is installed in front of the CCD 11. The hardness testing machine 10 presses a square cone diamond with an angle of 136° between the opposite faces into the surface of the material to be tested, and after maintaining it for a certain period of time, the diamond is removed from the surface of...

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Abstract

The invention provides a Vickers hardness test system, which is run on a computer, and the computer is connected with a hardness test platform. The hardness test platform utilizes an industrial optical lens and a charge-coupled device to acquire the indentation image of the surface of material to be tested, and transmits the indentation image to the computer. The computer utilizes the Vickers hardness detection system to carry out analysis in order to obtain the positions of the four corners of two indentation diagonals in the indentation image, the lengths of the two indentation diagonals are calculated according to the four corners, the Vickers hardness of the material to be tested is then calculated according to the lengths of the two indentation diagonals, and a test result is outputted to a display device connected with the computer. The invention also provides a Vickers hardness test method. The invention can accurately determine the position of the indentation of the surface ofmaterial, and therefore the precision of hardness test is increased.

Description

Technical field [0001] The invention relates to a material hardness detection system and method, in particular to a Vickers hardness detection system and method. Background technique [0002] Vickers Hardness (Vickers-Hardness, VH) is a standard that indicates the hardness of a material. Measuring the Vickers hardness of a material is usually to press a square cone diamond with an angle of 136° on the opposite surface into the surface of the material, hold it for a specified time, measure the diagonal length of the indentation, and then calculate the hardness according to the formula. [0003] At present, when testers use the Vickers hardness testing machine to measure the hardness of materials, they rely on visual inspection to determine the position of the indentation, and then use a ruler to measure the length of the diagonal of the indentation. Visual inspection can cause eye fatigue and cause uncertainty in the measured data. Summary of the invention [0004] In view of the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/42G06T7/00
Inventor 张旨光丁勇红蒋理袁忠奎陈贤艺
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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