Metal part crack opening method

A technology of metal parts and opening methods, which is applied in the field of failure analysis of metal material failure parts, can solve the problems of fracture damage, inability to perform specific operations and specifications according to this, and achieve the effect of reducing fracture damage and facilitating the failure analysis process

Inactive Publication Date: 2018-11-23
国营芜湖机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For metal material failure parts with cracks, not only the cracks need to be observed, but also the fracture morphology should be observed after the cracks are opened. The crack opening process of existing metal parts is affected by personal factors, and there is no specific guidance on the operation process, which is not convenient for cracks The specification of the opening process often results in damage to the fracture after the crack is opened, which is not conducive to the subsequent failure analysis process
[0003] For example, the material failure analysis method with the Chinese patent application number CN201610398677.4 and the failure analysis method with the Chinese patent number CN201110386842.1 describe the failure process method, but do not explain the specific crack opening method, and cannot follow this For specific operations, there is no explanation for the crack opening method of metal materials and the precautions during the crack opening process. Therefore, it is now necessary to directly guide the crack opening process in the failure analysis process of metal parts to be specifically announced.

Method used

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Examples

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Effect test

Embodiment 1

[0034] A method for opening a crack in a metal part. The present embodiment is a metal thin-walled part. The specific steps are as follows:

[0035] (1) Cutting: First cut around the crack of the metal thin-walled part. When cutting parallel to the crack, it should be as far away from the crack as possible. At the same time, the cutting distance should be 20mm-50mm, leaving the knocking part for the subsequent fracture opening; The cutting position perpendicular to the crack should be as close to the crack position as possible, and the distance between the crack and the crack should be 3mm to 5mm;

[0036] (2) Clamping: Clamp the metal thin-walled parts on the bench vise, the crack is parallel to the clamping surface of the bench vise, and the crack must not contact the bench vise;

[0037] (3) Keep the distance: the crack should be close to the end face of the bench vise and kept at 3mm to 5mm; the surface of the part at the parallel crack should be selected during clamping, ...

Embodiment 2

[0043] A method for opening a crack in a metal part. The present embodiment is a metal thick-walled part. The specific steps are as follows:

[0044] (1) Cutting: First cut around the crack of the metal thick-walled part. When cutting parallel to the crack, it should be as far away from the crack as possible. At the same time, the cutting distance should be 20mm-50mm, leaving the knocking part for the subsequent fracture opening; The cutting position perpendicular to the crack should be as close to the crack as possible, and the distance between the crack and the crack should be 3mm to 5mm. If the crack of the thick-walled part is shallow, it needs to be cut in the reverse direction. The deepest part of the cutting position should be no less than the depth of the crack. less than 3mm to avoid damage to the fracture;

[0045] (2) Clamping: Clamp the part on the bench vise, the crack is parallel to the clamping surface of the bench vise, and the crack must not be in contact with...

Embodiment 3

[0053] A method for opening a crack in a metal part. This embodiment is a metal columnar part. The specific steps are as follows:

[0054] (1) Cutting: First cut around the crack of the metal columnar part, and cut parallel to the crack. It should be as far away from the crack as possible, and the distance should be kept at 20mm to 50mm, leaving the percussion part for the subsequent fracture opening; such as thick wall Parts with shallow cracks need to be cut on the reverse side. The deepest part of the cutting position should not be less than 5mm from the edge of the crack to avoid damage to the fracture;

[0055] (2) Clamping: clamp the metal columnar part on the bench vise, the crack is parallel to the clamping surface of the bench vise, the crack must not be in contact with the bench vise, but the crack must be close to the end face of the bench vise;

[0056] (3) Keep the distance: it is advisable to keep the distance between 3mm and 5mm; the surface of the part at the p...

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Abstract

The invention relates to the field of metal defective component failure analysis, in particular to a metal part crack opening method. The metal part crack opening method comprises the following specific steps of 1, cutting; 2, clamping; 3, distance keeping; 4, beating. By means of the method, a crack opening way of a metal part in the failure analysis process is fixed, the problem that a method isdifficult to select in the crack opening process is solved, a guidance is provided for the specific operation method for opening a metal part crack, specific standards are provided in the crack opening process, the situation that after the crack is opened, a fracture is damaged is reduced, and the subsequent failure analysis process is facilitated.

Description

technical field [0001] The invention relates to the field of failure analysis of metal material fault parts, in particular to a method for opening cracks of metal parts. Background technique [0002] For metal material failure parts with cracks, not only the cracks need to be observed, but also the fracture morphology should be observed after the cracks are opened. The crack opening process of existing metal parts is affected by personal factors, and there is no specific guidance on the operation process, which is not convenient for cracks The specification of the opening process often results in damage to the fracture after the crack is opened, which is not conducive to the subsequent failure analysis process. [0003] For example, although the failure process method is described in the material failure analysis method with the Chinese patent application number CN201610398677.4 and the failure analysis method with the Chinese patent number CN201110386842.1, the specific cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P17/00
CPCB23P17/00
Inventor 黄超王珊欧阳康
Owner 国营芜湖机械厂
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