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Large-area and large-thickness tu2 copper/steel explosive composite material and repair method for defects

A composite material, large-thickness technology, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as reducing repair costs, and achieve the effect of strong economic practicability, simple process and operation process

Active Publication Date: 2017-01-25
JIANGSU RUNBANG NEW MATERIAL GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent of the present invention provides a repair method, which can not only weld the non-fitting parts, reduce the repair cost, but also solve the problems of copper oxidation and gas absorption at high temperature, avoid thermal cracks, and ensure the quality of the interior and surface

Method used

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  • Large-area and large-thickness tu2 copper/steel explosive composite material and repair method for defects
  • Large-area and large-thickness tu2 copper/steel explosive composite material and repair method for defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Material TU2+Q235B, size (6+34)×900×1800mm; non-fitting size 70×250mm, the position is that the edge is not pasted.

[0018] 1. Groove design and processing, using a grinder, cutting down to the carbon steel layer along the pre-marked line, removing the unattached copper plate, and removing 2-2.5mm of the Q235B plate with a 60# grinding wheel, of which The two right angles are polished with a stainless steel grinding head, and a 120° bevel is ground on the three sides of the cladding.

[0019] 2. Transition layer surfacing welding process, using argon arc welding, using φ2.4ERNi-1 welding wire, welding with 120A current for the first layer and 110A current for the second layer. After the surfacing welding is completed, the processing is flush with the joint surface.

[0020] 3. The overall heating process uses a heating rate of 100°C / h to heat the copper-steel composite plate to 480°C and keep it warm for 30 minutes.

[0021] 4. Gradient thermal insulation process, pre...

Embodiment 2

[0024] Material TU2+Q235B, size (10+20)×2100×6000mm; non-fitting is a circle of φ50mm, and the position is that the middle part is not pasted.

[0025] 1. Groove design and processing, using a grinder, cutting down to the carbon steel layer along the pre-marked line, removing the unattached copper plate, and removing 2-2.5mm of the Q235B plate with a 60# grinding wheel, of which The circular joint surface is ground with a stainless steel grinding head, and a 120° bevel is ground on the circumference of the cladding.

[0026] 2. The surfacing welding process of the transition layer adopts the argon arc welding method and uses φ2.4ERNiCu-7 welding wire. The first layer is 130A current, and the second layer is 120A current for welding. After the surfacing welding is completed, the grinding is flush with the joint surface.

[0027] 3. The overall heating process uses a heating rate of 100°C / h to heat the copper-steel composite plate to 600°C and keep it warm for 20 minutes.

[00...

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Abstract

The invention discloses a method for repairing defects in a production process of a large-area large-thickness TU2 copper / steel explosion composite material. The method comprises the steps of groove designing and machining, transition layer bead weld, integral heating, gradient heat preservation, coating bead weld and ultrasonic treatment. The method has the advantages that through the integral heating technology, the gradient heat preservation, and the ultrasonic impact treatment, the repairing difficulty of large-plate-width large-thickness coating copper steel composite plates is solved; and the technology and the operation flow are simple, and the method has higher economic practicality.

Description

technical field [0001] The patent of the present invention relates to a repairing method for solving the non-bonding of the large-area and thick cladding (copper plate) and the substrate (steel plate), especially for copper-steel composite panels with a cladding of 5-12mm. The invention belongs to the technical field of copper composite materials. Background technique [0002] At present, the copper-steel clad plate produced by the explosive welding method will cause partial non-fit when the explosion process is not suitable. If it is not repaired, the non-fit part will expand during the later use process, and eventually accelerate the scrapping of the equipment. Some domestic manufacturers use flame baking preheating method to repair the copper cladding layer less than 4mm and the plate width is small, but the baking area is limited, the temperature will be lost in a short time, and continuous welding cannot be performed. It needs another flame baking for welding. Although...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K9/173B23K9/235B23K9/23
Inventor 史和生吕林杨文芬
Owner JIANGSU RUNBANG NEW MATERIAL GRP CO LTD
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