Measuring device for detecting adhesives strength of diamond coat by method of inner expand and bubbling

A diamond coating and measuring device technology, applied in measuring devices, using stable tension/pressure to test material strength, using mechanical devices, etc., can solve the problems of inability to perform accurate quantitative detection of matrix shape and restrictions, and reach the scope of use Wide, simple operation, significant economic benefits

Inactive Publication Date: 2004-10-27
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0003] In order to overcome many deficiencies such as the inability of the existing diamond coating adhesion strength detection method to carry out accurate quantitative detection and the limitation by the shape of the substrate, the present invention provides an internal expansion method corresponding to the internal expansion bubbling method to detect the diamond coat

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  • Measuring device for detecting adhesives strength of diamond coat by method of inner expand and bubbling
  • Measuring device for detecting adhesives strength of diamond coat by method of inner expand and bubbling

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Embodiment Construction

[0009] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0010] like figure 1 , figure 2 As shown, the device of the present invention mainly includes a measurement base 6, a He-Ne laser interferometry system 1, a sample holder 3, a pressure measurement system 4, a pressure feeding system 5, an unloading valve 7, a signal amplifier 8 and a computer control system 9 . The measuring base 6 is processed into a cube platform of 7cm by a plexiglass block, and four holes are arranged at the center of the four faces of the cube, and the bottoms of the four holes communicate with each other, and the diameter of the holes is 2mm. In order to facilitate the connection, the outlets of the three holes on the top, bottom and left are processed into threaded holes. The sample holder 3 is directly screwed into the threaded hole on the top surface of the measurement base 6 through threaded connection, and ...

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Abstract

The measuring device includes base, He-Ne laser interferometry system, pressure feed system and pressure measuring system. The base possessing connected four holes is a cubic platform made from organic glass in side length 7cm. Exits of four holes are connected to sample holder, pressure measuring system, pressure feed system and unloading valve. Sample holder is made from non-shrinking steel bolt. The pressure measuring system is connected in 'embedded type'. OFV-3000 optical fiber laser vibration gage is adopted in He-Ne laser interferometry system. Injection pump is as pressurized structure in the pressure feed system. Unloading valve can adjust system pressure. The method calculates strength with accuracy without limit of shape of basal body and magnitude of intensity.

Description

technical field [0001] The invention relates to a measuring device for quantitatively detecting the adhesion strength of diamond coatings on various shapes of cemented carbide tool substrates, in particular to a measuring device for detecting the adhesion strength of diamond coatings by using the internal swelling and bubbling method, which belongs to mechanical cutting coatings The technical field of tool coating performance testing. Background technique [0002] Diamond has become an ideal tool material due to its excellent properties such as high hardness, high thermal conductivity, low friction coefficient, low thermal expansion coefficient, and good chemical stability. It has been widely used in the field of diamond-coated cutting tools, but it has not yet Realize large-scale production. One of the main reasons is that there is no uniform standard for evaluating the intrinsic quality (mainly mechanical properties) of diamond coatings. Among the existing measurement me...

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Application Information

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IPC IPC(8): G01N3/10G01N19/04
Inventor 简小刚陈明孙方宏张志明
Owner SHANGHAI JIAO TONG UNIV
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