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Metal part internal crack repairing method

A repair method and technology for internal cracks, applied in the field of crack repair, can solve problems such as low healing rate, poor healing quality, and inconspicuous healing phenomena, and achieve the effects of high healing rate, short time-consuming, and simple and easy treatment process

Inactive Publication Date: 2015-03-25
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the existing pulse discharge healing technology has no obvious healing phenomenon, low healing rate and poor healing quality, and has not entered into practical application

Method used

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  • Metal part internal crack repairing method
  • Metal part internal crack repairing method
  • Metal part internal crack repairing method

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] A method for repairing internal cracks in metal parts of the present invention is aimed at the through-type crack damage that occurs in stainless steel rectangular thin plate parts, and the crack damage parts with unilateral cracks or central cracks whose maximum distance between the two sides of the crack should be within the size range of 20 μm designed for repair.

[0017] Such as figure 1 As shown, the present invention repairs the internal cracks of metal parts by applying the pulse current impact device of "Design and Experimental Research of Pulse Current Impulse Device published by Peng Yanfang in 2013" [D]. Dalian: Dalian University of Technology". The improvement point is that a parts protection fixture is added, and the repair device includes a controller 1, a charger 2, a capacitor bank 3, a high voltage switch 4, an equipment fixt...

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Abstract

The invention relates to a metal part internal crack repairing method. Cracks are repaired by performing multiple times of pulse discharge healing process with gradually increased energy on the damaged parts with single edge or central cracks. Since the multiple times of pulse discharge healing process is performed on the damaged parts only, the processing process is simple and easy, and the consumed time is short; after the processing, the healing structure covers the entire crack, and the healing rate is high. Thus, the method can be applied to repair processing for metal parts with different crack damage levels, materials and sizes, the adaptability is high, and the method can be widely applied to the field of metal material repairing.

Description

technical field [0001] The invention relates to a method for repairing cracks, in particular to a method for repairing internal cracks in metal parts. Background technique [0002] Remanufacturing engineering can effectively improve the performance and service life of products, and reduce environmental pollution and consumption of materials and energy. The repair of damaged parts is an important part of remanufacturing engineering. As a common form of component failure, metal cracks lead to a rapid decline in the strength and reliability of components. Its repair and healing methods are worthy of further study. [0003] For metal crack healing, the previous research methods mainly include high-temperature heating method, electrochemical method, embedded copper tube fiber method, laser cladding method and so on. These research methods are not very economical and applicable, and are likely to have adverse effects on the properties of the substrate, and often only have a heal...

Claims

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Application Information

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IPC IPC(8): B23P6/04
CPCB23H9/00B23H11/00
Inventor 邓德伟于涛刘倩倩郝胜智张洪潮
Owner DALIAN UNIV OF TECH
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