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A weldable bonded composite metal damping tube and its preparation method

A composite metal and vibration damping tube technology, which is applied in the direction of metal layered products, chemical instruments and methods, tubular objects, etc., can solve the problems of high manufacturing cost, complicated manufacturing process, and the inability to realize welding of composite tubes, etc.

Active Publication Date: 2020-05-15
嘉峪关天源新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly two kinds of metal vibration-damping composite pipes. One is a metal vibration-damping composite pipe formed by connecting the inner and outer layers of pipes with a layer of polymer damping adhesive sandwiched between two layers of metal pipes. Metal vibration-damping composite pipe composed of metal foam material or honeycomb material in the middle of two-layer metal pipes. The first type of composite pipe has a good vibration-damping performance due to a layer of polymer damping binder sandwiched in the middle, but the polymer damping The adhesive is insulating and non-conductive, which makes it impossible to weld the composite pipes; although the metal foam or honeycomb material in the middle of the two-layer metal pipes can be welded, the manufacturing cost is high and the manufacturing process is complicated, which limits the application

Method used

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  • A weldable bonded composite metal damping tube and its preparation method
  • A weldable bonded composite metal damping tube and its preparation method
  • A weldable bonded composite metal damping tube and its preparation method

Examples

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preparation example Construction

[0021] A method for preparing a weldable composite metal damping tube, the composite metal damping tube consists of an inner metal tube 1, an outer metal tube 4, and a wound metal wire between the inner metal tube 1 and the outer metal tube 4 2. Composed of solid polymer damping fillers, the manufacturing process of the composite metal damping tube is as follows: firstly, after cleaning the outer surface of the inner metal tube 1, passivating it with a chemical chromium-free passivation solution, and then turning the metal wire 2 into a Wrap the surface of the inner metal tube 1 in a spiral shape, and at the same time wrap the solid polymer damping film in the gap between the metal wires, and then insert the inner metal tube 1 wrapped with the metal wire and the solid polymer damping film into the inner layer. Surface-treated outer metal tube 4; preheat the above materials to 160°C to 200°C, after preheating for 20min to 30min, use the expansion cone 5 to expand the inner metal...

example 1

[0024] Select 304 stainless steel with an outer diameter of 32 mm and a wall thickness of 2 mm as the outer metal tube 4, select 304 stainless steel with an outer diameter of 29 mm and a wall thickness of 2 mm as the inner metal tube 1, and select an aluminum wire with a diameter of 1 mm as the winding wire 2 After the outer surface of the inner metal tube 1 is pickled with dilute sulfuric acid with a mass fraction of 10%, it is put into a chromium-free passivation solution for passivation treatment, and at the same time, the aluminum wire is treated with a sodium hydroxide solution with a mass fraction of 10% Afterwards, it is pickled with 10% dilute sulfuric acid by mass fraction and enters the chromium-free passivation solution for passivation treatment. After the treatment, the metal aluminum wire is spirally wound on the inner layer metal tube 1, and the distance between the spiral wires is The distance is 3 mm, and the solid polymer damping film 3 with a thickness of 0.3 ...

example 2

[0026] Select 409 stainless steel with an outer diameter of 40 mm and a wall thickness of 1.2 mm as the outer metal tube 4, select 409 stainless steel with an outer diameter of 38 mm and a wall thickness of 1.2 mm as the inner metal tube 1, and select an aluminum wire with a diameter of 0.5 mm. The outer surface of the metal pipe 1 is pickled with dilute sulfuric acid with a mass fraction of 10%, and then entered into a chromium-free passivation solution for passivation treatment. At the same time, the aluminum wire is treated with sodium hydroxide with a mass fraction of 10%, and then reused Pickling treatment with dilute sulfuric acid with a fraction of 10%, and then enter the chromium-free passivation solution for passivation treatment, and then wind the aluminum wire helically on the inner metal tube 1, the distance between the helixes is 3mm, and the thickness is A 0.2mm, 2mm wide solid polymer damping film tape is helically wound at the winding gap of the aluminum wire; p...

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Abstract

The invention relates to a weldable bonding composite metal vibration-damping pipe and a preparation method thereof. The composite metal vibration-damping pipe is composed of an inner-layer metal pipe, a winding metal wire, a winding solid-state high-polymer damping film, an outer-layer metal pipe and the like; a manufacturing technology of the weldable bonding composite metal vibration-damping pipe comprises the following steps: firstly, washing and passivating the outer surface of the inner-layer metal pipe; spirally winding the metal wire on the surface of the inner-layer metal pipe; meanwhile, winding the winding solid-state high-polymer damping film on a gap where the metal wire is wound and inserting the outer-layer metal pipe which is subjected to inner surface treatment; after pre-heating to certain temperature, expanding the inner pipeline by utilizing an expansion cone, so as to enable metal wire deformation, the inner-layer metal pipe and the outer-layer metal pipe to reachintermetallic combination; meanwhile, liquefying the solid-state high-polymer damping film through heating and extruding and then filling into gaps in the middles of the metal wire, the inner-layer metal pipe and the outer-layer metal pipe; curing to form a strong bonding effect. The weldable bonding composite metal vibration-damping pipe has the advantages of convenience for machining and manufacturing, strong bonding strength and capability of being welded, and has the effects of absorbing vibration and reducing noises.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a weldable bonded composite metal damping tube and a preparation method thereof. Background technique [0002] The vibration-absorbing composite pipe can be used in the field of fluid transportation, and has the environmental protection performance of vibration and noise reduction. At present, there are mainly two kinds of metal vibration-damping composite pipes. One is a metal vibration-damping composite pipe formed by connecting the inner and outer layers of pipes with a layer of polymer damping adhesive sandwiched between two layers of metal pipes. Metal vibration-damping composite pipe composed of metal foam material or honeycomb material in the middle of two-layer metal pipes. The first type of composite pipe has a good vibration-damping performance due to a layer of polymer damping binder sandwiched in the middle, but the polymer damping The adhesive is insulating and no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B1/08B32B15/18B32B15/01B32B3/08B21D39/20
CPCB21D39/20B32B1/08B32B3/08B32B15/011B32B2307/102B32B2597/00
Inventor 白江虎李具仓任娟红王军宏马艳丽刘险峰邵建勇孙爱楠宋宗亮陈磊薛海军
Owner 嘉峪关天源新材料有限责任公司
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