CN2419448Y

CN2419448Y - Aluminum plastic composite by one step argon arc welding process

Info

Publication number: CN2419448Y
Application number: CN 99252586
Authority: CN
Inventors: 徐兆来
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-01
Filing date: 1999-11-01
Publication date: 2001-02-14
Anticipated expiration: 2009-11-01

Abstract

The utility model relates to an aluminum plastic composite pipe by one step argon arc welding process, which mainly comprises two parts of a pipe wall and a pipe cavity. The pipe wall is composed of three parts of an outer layer plastic, an aluminum hull, and an inner layer plastic. The aluminum hull, the inner layer plastic, and the outer layer plastic are bonded together by superheat sol, and a gap does not exist. When the aluminum plastic composite pipe by one step argon arc welding process is made, the aluminum hull is firstly welded into an aluminum pipe by argon arc welding, and then, the interior and the exterior of the aluminum pipe respectively use two extruding machines; meanwhile, hot sol and plastics are extruded onto the aluminum pipe, the hot sol, the plastics, and the aluminum pipe are compounded and formed once, and thereby, the compression resistant intensity and the pull resistant intensity of the aluminum plastic composite pipe by one step argon arc welding process are effectively enhanced.

Description

One-process argon arc welding aluminium-plastic composite pipe

The utility model relates to a kind of building material product, particularly is applicable to hot and cold water pipe and gas pipe line.

Aluminium-plastic composite pipe is the substitute products of galvanized pipe, and the aluminium-plastic composite pipe that uses mostly adopts the multistep processes manufacturing to form at present, and is gapped between aluminium skin and plastics in the tube wall of aluminium-plastic composite pipe, causes product compression and tensile strength deficiency.

The purpose of this utility model provides that a kind of resistance to compression, tensile strength are big, gapless one-process argon arc welding aluminium-plastic composite pipe between aluminium skin and plastics in the tube wall.

The utility model is to realize like this, one-process argon arc welding aluminium-plastic composite pipe of the present utility model, comprise tube wall, tube chamber two parts, tube wall is made of outer layer plastic, inner plastic, aluminium skin, it is characterized in that, thermosol and plastics are expressed on the aluminum pipe simultaneously, and disposable drawing and forming does not have the gap between aluminium skin and inside and outside plastics in the tube wall.

The utility model and three has technology to compare, and its advantage is:

1, the utility model adopts disposable drawing and forming, not only enhances productivity, and reduces production costs, the product quality problem that the leak that occurs in the time of can also effectively finding because of argon arc welding welding aluminum pipe causes.

2, resistance to compression of the present utility model, tensile strength are big.

3, pipe thickness of the present utility model is even, no gap.

Description of drawings:

Fig. 1 is a cross-sectional schematic of the present utility model;

Fig. 2 is a schematic cross-section of the present utility model.

The figure number explanation:

1, tube wall 2, tube chamber 3, outer layer plastic

4, aluminium skin 5, inner plastic

With reference to Fig. 1-Fig. 2, the utility model comprises tube wall 1, tube chamber 2 two-part, is made of outer layer plastic 3, aluminium skin 4, inner plastic 5 in the tube wall 1.During making, earlier 4 argon arc weldings of aluminium skin are welded into the aluminum pipe of tubulose, inwall and overcoat at aluminum pipe use two extrusion presss respectively, the thermosol squeezing unit is preceding, the extruding plastic device after, both are at a distance of 5mm, when aluminum pipe stretches, four extrusion presss are expressed to the inwall of aluminum pipe to thermosol and plastics simultaneously and put outward, the gap is not stayed in one-off drawing moulding like this in the tube wall, can find at any time that simultaneously product is because of causing the aluminum pipe leak that the burn-through aluminum pipe stays when the argon arc welding sometimes because of carelessness, because when the extrusion press extruding raw material is found leak, then raw material can pass from leak under the effect of high pressure, stays pore, and original technology is the prefabricated built-in plastic tube of elder generation, then the aluminium suitcase is wrapped up in and argon arc welding is welded into, and squeezes into thermosol and plastics at overcoat again, so, just can't find aluminum pipe leak quality problems, cause the problem of resistance to compression deficiency in use.

Claims

1, a kind of one-process argon arc welding aluminium-plastic composite pipe, mainly comprise tube wall (1), tube chamber (2) two-part, tube wall (1) is made of outer layer plastic (3), aluminium skin (4) and inner plastic (5), it is characterized in that using between aluminium skin (4) and outer layer plastic (3) and inner plastic (5) the disposable while of thermosol compound, and do not have the gap.