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Resistance welding method for high-volume-content straw powder reinforced aluminum matrix composite

A composite material, reinforced aluminum-based technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve problems such as insufficient ductility of welding points, and achieve difficult peeling, improved ductility, and improved sealing performance. Effect

Inactive Publication Date: 2017-09-15
JIANGSU JINGDUN ENERGY SAVING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of the glass after welding in the present invention is improved, the hardness is also improved a lot, the process is simple, but the ductility of the welding point is insufficient, and there are serious technical problems for the equipment with high sealing requirements for preparing hollow glass.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for resistance welding of high-volume straw powder reinforced aluminum-based composite materials, comprising the following steps: step 1, cleaning the welding surface of the composite material, drying it for later use; step 2, placing the processed composite material in a vacuum, and depositing the electrode Foamed aluminum active layer; step 3, after plasma treatment of the composite material with the active layer for 1 second, the temperature was raised at a rate of 12°C / min to complete vacuum brazing; step 4, the composite material treated in step 3 was cooled to 100 °C at a constant speed ℃, sonication for 15 minutes is sufficient.

[0015] Wherein, in step 1, the welding surface of the composite material is ultrasonically cleaned with absolute ethanol and high-purity water for 10 minutes in sequence.

[0016] The voltage during electrode deposition in step 2 is 41V.

[0017] The plasma frequency in step 3 is 2000Hz.

[0018] The solder used in step 3 is ...

Embodiment 2

[0022] A method for resistance welding of high-volume straw powder reinforced aluminum-based composite materials, comprising the following steps: step 1, cleaning the welding surface of the composite material, drying it for later use; step 2, placing the processed composite material in a vacuum, and depositing the electrode Active layer of aluminum foam; step 3, after plasma treatment of the composite material with the active layer for 4s, the temperature was raised at a rate of 20°C / min to complete vacuum brazing; step 4, the composite material treated in step 3 was cooled to 180°C at a constant speed ℃, sonication for 18 minutes is sufficient.

[0023] Wherein, in step 1, the welding surface of the composite material is ultrasonically cleaned with absolute ethanol and high-purity water for 12 minutes in sequence.

[0024] The voltage during electrode deposition in step 2 is 41V.

[0025] The plasma frequency in step 3 is 2400Hz.

[0026] The solder used in step 3 is Al-Cu-...

Embodiment 3

[0030] A method for resistance welding of high-volume straw powder reinforced aluminum-based composite materials, comprising the following steps: step 1, cleaning the welding surface of the composite material, drying it for later use; step 2, placing the processed composite material in a vacuum, and depositing the electrode Active layer of foamed aluminum; step 3, after plasma treatment of the composite material with the active layer for 8s, the temperature was raised at a rate of 28°C / min to complete vacuum brazing; step 4, the temperature of the composite material treated in step 3 was lowered to 230°C at a constant speed °C, sonicate for 20 minutes.

[0031] Wherein, in step 1, the welding surface of the composite material is ultrasonically cleaned with absolute ethanol and high-purity water for 15 minutes in sequence.

[0032] The voltage during electrode deposition in step 2 is 41V.

[0033] The plasma frequency in step 3 is 2000-2800Hz.

[0034] The solder used in step...

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Abstract

The invention discloses a resistance welding method for a high-volume-content straw powder reinforced aluminum matrix composite. The method comprises the steps that 1, the surface to be welded of the composite is cleaned and dried for later use; 2, the treated composite is placed in vacuum, and a foamed aluminum active layer is deposited by using an electrode; 3, plasma treatment is carried out on the composite with the active layer for 1-8 seconds, and then temperature rise is carried out at the speed of 12-28DEG C / min so as to complete vacuum brazing; and 4, when the composite treated in the step 3 is cooled to 100-230 DEG C at a constant speed, the composite is subjected to ultrasonic treatment for 15-20 minutes. According to the method, welding is convenient and fast, the cost is low, the welding effect is firm, an obtained point of weld is firm, the stretch rate is high, and the method is suitable for the industry with high sealing requirements.

Description

technical field [0001] The invention belongs to a resistance spot welding method for aluminum-based composite materials, in particular to a resistance welding method for high-volume straw powder-reinforced aluminum-based composite materials. Background technique [0002] Aluminum matrix composite material is a widely used metal matrix composite material with good mechanical properties, and it can also be combined according to actual needs. However, the thermophysical properties of the matrix and the reinforcement phase of aluminum matrix composites are quite different, making the welding more complicated than that of single-phase homogeneous materials. [0003] The Chinese patent application number 201510781309.3 discloses a method for preparing carbon nanotube-reinforced aluminum matrix composites by ultrasonic welding. The nanotubes are tiled on a piece of aluminum surface, and another piece of aluminum is spread on the surface of the carbon nanotubes to obtain a weldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/008B23K1/20B23K103/16
CPCB23K1/008B23K1/203B23K1/206B23K2103/16
Inventor 沈天宇戴思捷戴宇轩潘逸汝李雪琦
Owner JIANGSU JINGDUN ENERGY SAVING TECH CO LTD
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