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A detection method for thermal stability of polycrystalline diamond composite sheet

A technology of polycrystalline diamond and detection method, which is applied in the direction of testing machinability, etc., and can solve the problems reflecting the thermal stability of composite sheets, etc.

Active Publication Date: 2017-10-13
HENAN JINGRUI SUPERHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermogravimetric differential thermal analysis is commonly used at home and abroad to judge the thermal stability of multiple composite sheets, but this method is only a static test method for the thermal stability of composite sheets, and it is difficult to truly reflect the thermal stability of composite sheets during the drilling process. The quality of heat resistance stability in

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  • A detection method for thermal stability of polycrystalline diamond composite sheet

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Comparison scheme
Effect test

Embodiment 1

[0045] Use 1613 polycrystalline diamond composite sheet a (EP-H1613, Henan Jingrui Superhard Material Co., Ltd.) and 1613 polycrystalline diamond composite sheet b (Armor 1 generation, Henan Jingrui Superhard Material Co., Ltd.) to turn cylindrical granite. The specific process is: weld the composite sheet on the tool holder of the vertical lathe, set the inclination angle of the composite sheet to 18°, the cutting depth to 1.5mm, the footage speed of the composite sheet to 0.8mm / r, and the cutting speed of the fixed cutting point to 150mm / min, start the vertical lathe to turn the granite (the diameter of the granite is 1.20m, there is a through hole with a diameter of 0.4m in the middle, and the Mohs hardness is 6-7). After the composite sheet fails, stop turning and record the distance of the composite sheet for turning granite. The results are as follows: figure 1 shown. figure 1 It is the histogram of the distance values ​​of two kinds of polycrystalline diamond composit...

Embodiment 2

[0048] Use 1613 polycrystalline diamond composite sheet a (EP-H1613, Henan Jingrui Superhard Material Co., Ltd.) and 1613 polycrystalline diamond composite sheet b (Armor 3 generation, Henan Jingrui Superhard Material Co., Ltd.) to turn cylindrical granite. The specific process is: weld the composite sheet on the tool holder of the vertical lathe, set the inclination angle of the composite sheet to 18°, the cutting depth to 1.5mm, the footage speed of the composite sheet to 0.8mm / r, and the cutting speed of the fixed cutting point to 150mm / min, start the vertical lathe to turn the granite (the diameter of the granite is 1.20m, there is a through hole with a diameter of 0.4m in the middle, and the Mohs hardness is 6-7). After the composite sheet fails, stop turning and record the distance of the composite sheet for turning granite. Among them, the cutting distance of composite sheet a is 2892m, and the cutting distance of composite sheet b is 5567m, indicating that the thermal ...

Embodiment 3

[0051] Use 1613 polycrystalline diamond composite sheet a (Armor 3rd generation, Henan Jingrui Superhard Material Co., Ltd.) and 1613 polycrystalline diamond composite sheet b (Armor 1st generation, Henan Jingrui Superhard Material Co., Ltd.) to turn cylindrical granite. The specific process is: weld the composite sheet on the tool holder of the vertical lathe, set the inclination angle of the composite sheet to 18°, the cutting depth to 1.5mm, the footage speed of the composite sheet to 0.8mm / r, and the cutting speed of the fixed cutting point to 150mm / min, start the vertical lathe to turn the granite (the diameter of the granite is 1.20m, there is a through hole with a diameter of 0.4m in the middle, and the Mohs hardness is 6-7). After the composite sheet fails, stop turning and record the distance of the composite sheet for turning granite. Among them, the cutting distance of composite sheet a is 5567m, and the cutting distance of composite sheet b is 3800m, which shows th...

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Abstract

The application belongs to the field of superhard materials, and in particular relates to a method for detecting the thermal stability of a polycrystalline diamond composite sheet. The detection method provided by the present application includes the following steps: a), using the first polycrystalline diamond composite sheet to turn cylindrical granite, and after the first polycrystalline diamond composite sheet fails, stop turning to obtain the first polycrystalline diamond composite The distance value of turning granite; b), use the second polycrystalline diamond composite sheet to turn cylindrical granite, after the second polycrystalline diamond composite sheet fails, stop turning to obtain the second polycrystalline diamond composite sheet turning The distance value of granite; c), compare the distance value of the first polycrystalline diamond compact sheet turning granite and the distance value of the second polycrystalline diamond compact sheet turning granite, obtain the first polycrystalline diamond compact sheet and Thermal stability of the second polycrystalline diamond compact.

Description

technical field [0001] The invention belongs to the field of superhard materials, in particular to a method for detecting the thermal stability of a polycrystalline diamond composite sheet. Background technique [0002] As a new type of composite material, polycrystalline diamond compact PDC has a development history of only ten years, but its application range has been developed to various industries, and is widely used in geological drilling, non-ferrous metals and alloys, Carbide, graphite, plastic, rubber, ceramics, wood and other materials cutting processing and other fields. Its surface layer is polycrystalline diamond sintered from powders with different diamond particle sizes, which has extremely high hardness, thermal stability and long working life; the bottom layer is generally tungsten-cobalt cemented carbide, which has good toughness. Provides good support for surface polycrystalline diamond and is easily soldered to various tools by brazing. At present, polyc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/58
Inventor 王晓李治海
Owner HENAN JINGRUI SUPERHARD MATERIAL