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Device and method for repairing microcracks in non-ferromagnetic metal pipe fittings

A metal pipe fitting and non-ferromagnetic technology, which is applied in the field of repairing devices for microcracks in non-ferromagnetic metal pipe fittings, can solve problems such as dangerous operation, poor contact, and difficult clamping, and achieve efficient repair and improved repair efficiency.

Active Publication Date: 2019-11-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the existing crack arresting and repairing methods. Due to the high pulse current density, it is difficult to clamp non-slab parts, especially tubular parts, and prone to poor contact. In addition, the existing induction heating power supply is used to repair the cracks in the metal pipe fittings, but this method has a poor repair effect on the non-ferromagnetic material metal pipe fittings

Method used

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  • Device and method for repairing microcracks in non-ferromagnetic metal pipe fittings
  • Device and method for repairing microcracks in non-ferromagnetic metal pipe fittings

Examples

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Effect test

Embodiment 1

[0025] figure 1 A schematic structural diagram of a repairing device for microcracks in a non-ferromagnetic metal pipe fitting in Example 1 is shown. figure 2 shown figure 1 Sectional view of A-A in the middle. The device is used for arresting and repairing micro-cracks in non-ferromagnetic metal pipe fittings. The device can be used for crack arrest and repair of magnesium alloy pipe fittings, stainless steel pipe fittings, titanium alloy pipe fittings, aluminum alloy pipe fittings, etc.

[0026] refer to figure 1 and figure 2 , taking the repairing of microcracks in magnesium alloy pipe fittings as an example to illustrate this embodiment, a device for repairing microcracks in nonferromagnetic metal pipe fittings in this embodiment includes a pulse power supply 110, a helical coil 120 and a fixing fixture 130,

[0027] The magnesium alloy pipe fitting is nested and attached to the inside of the fixing fixture 130, and the spiral coil 120 is nested and attached to the ...

Embodiment 2

[0039] figure 1 A schematic structural diagram of a repairing device for microcracks in a non-ferromagnetic metal pipe fitting in Example 1 is shown. figure 2 shown figure 1 Sectional view of A-A in the middle. The device is used for arresting and repairing micro-cracks in non-ferromagnetic metal pipe fittings. The device can be used for crack arrest and repair of magnesium alloy pipe fittings, stainless steel pipe fittings, titanium alloy pipe fittings, carbon steel pipe fittings, aluminum alloy pipe fittings, etc.

[0040] refer to figure 1 and figure 2 , taking the repairing of microcracks in magnesium alloy pipe fittings as an example to illustrate this embodiment, a method for repairing microcracks in nonferromagnetic metal pipe fittings in this embodiment, the method is based on a microcrack in nonferromagnetic metal pipe fittings implemented by the fixer, the method is:

[0041] The pulse power supply 110 discharges the helical coil 120 at a discharge voltage of...

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Abstract

The invention discloses a device and method for repairing micro-cracks in a non-ferromagnetic metal pipe, and relates to the field of arresting and repairing of the micro-cracks. The device and the method aim to solve the problems that in an existing crack arresting and repairing mode, due to the fact that the pulse current density is large, for non-flat-type parts, especially tubular parts, clamping is difficult, poor contact is prone to occur, a certain risk exists in the operation, and in addition, due to the fact that in the prior art, an induction heating power supply is used for repairing the cracks in the metal pipe, the repairing effect of the mode on the non-ferromagnetic metal pipe is poor. According to the device and the method, a pulse power supply discharges a spiral coil under the discharge voltage of 1KV-20KV, the metal pipe is clamped by a fixing clamp so that the deformation caused due to the fact that the spiral coil extrudes the metal pipe can be limited, and therefore the crack arresting and repairing of the micro-cracks of the metal pipe can be realized. The device and the method are used for repairing the microcracks of the non-ferromagnetic metal pipe.

Description

technical field [0001] The invention relates to a repairing device and method for microcracks in non-ferromagnetic metal pipe fittings. It belongs to the field of arresting and repairing microcracks. Background technique [0002] In modern industry, metal is widely used as the main raw material in many engineering fields such as military, aviation, aerospace, shipbuilding, vehicle transportation, and machinery manufacturing. During the manufacture and use of metal components, cracks will appear due to various reasons. The expansion of cracks will cause the structural parts to break and fail before reaching the strength limit of the material, which will bring immeasurable losses to actual production and life. [0003] In the prior art, a relatively common method for crack arrest and repair is to use pulse current to treat metal. When the pulse current with high current density passes through the crack, some areas of the crack are welded, thereby repairing the partial area o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 徐文臣杨川于海平郭斌
Owner HARBIN INST OF TECH