Detection method for inner defects of polyhedral hard alloy anvil cell

A technology for cemented carbide and internal defects, which is applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, and can solve problems such as the detection method for internal defects of unseen polyhedral cemented carbide anvils, and achieve intuitive detection results, simple operation and low cost. low effect

Active Publication Date: 2015-11-04
ZHUZHOU HARD ALLOY GRP CO LTD
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AI Technical Summary

Problems solved by technology

However, there is no detection method or related literature and reports on the internal defects of polyhedral cemented carbide anvils so far.

Method used

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  • Detection method for inner defects of polyhedral hard alloy anvil cell
  • Detection method for inner defects of polyhedral hard alloy anvil cell
  • Detection method for inner defects of polyhedral hard alloy anvil cell

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Embodiment Construction

[0022] The method for detecting internal defects of a polyhedral cemented carbide anvil of the present invention is to use phased array ultrasonic testing equipment to perform ultrasonic testing on the nine faces of the polyhedral hard alloy anvil as ultrasonic testing surfaces, and the nine faces are respectively Upper top surface, four upper sides, four lower sides.

[0023] The top of the polyhedral cemented carbide anvil is used as the detection surface to mainly detect the internal macroscopic defects vertically downward; the upper side is the detection surface, which mainly detects the internal defects of the corresponding lower side and the surrounding area; the lower side is the detection surface, which mainly detects other defects. Corresponding internal defects on the upper side and its vicinity. The top and upper side are the working parts and the main stress-bearing parts. The corresponding ribs are prone to cracks during the production process, so strict requireme...

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Abstract

The invention relates to a detection method for inner defects of a polyhedral hard alloy anvil cell. Phased array ultrasonic inspection equipment is utilized; an upper top surface adopts longitudinal wave detection with a wedge block angle of 0 degree and a -30 degree-30 degree sector-shaped scanning manner is adopted; other eight side surfaces adopt transverse wave detection with a wedge block angle of 30-45 degrees; a sector-shaped scanning manner that a scanning starting angle is 30-40 degrees and a scanning stopping angle is 60-70 degrees is adopted; the detection starting sensitivity is determined by a sensitivity test block; the sensitivity test block is the polyhedral hard alloy anvil cell; a flat bottom hole is formed in the central line of a lower side surface, and the same hole is formed in the same position of a lower side surface corresponding to the lower side surface; a transverse hole is formed in a long edge, connected with the lower side surface, of one lower side surface; and crack grooves are formed in two edges, connected with the upper top surface, of one upper side surface respectively in a staggered manner. The method provided by the invention can be used for detecting the inner defects of the polyhedral hard alloy anvil cell, can detect the inner defects of the hard alloy with a minimum 0.1-mm equivalent weight hole and does not cause leaked detection.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic flaw detection, and in particular relates to a method for detecting internal defects of a polyhedral hard alloy anvil. Background technique [0002] The polyhedral cemented carbide anvil is used in the high-pressure synthetic gem-grade diamond industry. As a high-pressure-resistant, shear-resistant, and tensile-resistant accessory, its internal quality has a great influence on the quality and output of synthetic gem-grade diamonds. Influence. [0003] The polyhedral cemented carbide anvil has 10 faces and 13 edges; 2 upper and lower sides are parallel to each other, and 8 sides are divided into 4 upper and lower faces. The faces are not parallel, and the edges have nothing to do with each other. The shape is very complicated. . After the product is molded, it is degummed and sintered into a hard alloy product, and the finished product is finally finished. During the molding process, due to i...

Claims

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Application Information

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IPC IPC(8): G01N29/04
Inventor 卢少武彭文宋明沈峥
Owner ZHUZHOU HARD ALLOY GRP CO LTD
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