Production method of bimetal pipe
A double-layer metal and production method technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of single combination mode, low bonding strength, and inability to produce double-layer metal pipes, so as to save rare and precious metal materials, Effects of enhanced binding force and reduced cost of equipment and piping
Inactive Publication Date: 2007-09-12
唐谊光
View PDF0 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The double-layer metal pipes produced by these methods have a single combination method, and generally only double-layer metal pipes with stainless steel or copper inner tubes and carbon steel or low-alloy steel outer tubes can be produced.
For pipes made of other materials, such as aluminum or titanium and their alloys, the high temperature during processing will greatly affect the material of the inner pipe, resulting in low bonding strength between the inner and outer pipes, so any combination of double layers cannot be produced. Metal tube
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] Referring to Fig. 1-Fig. 3, the present invention comprises the following steps:
[0022] 1) As shown in Figure 1, shrink one end of the outer tube 1 so that the inner diameter of the narrowed end is the outer diameter of the inner tube +0.10 +0.20 , the other end remains unchanged;
[0023] 2) Thoroughly derusting the outer surface of the inner tube 2 and the inner surface of the outer tube 1;
[0024] 3) As shown in Figure 2, insert the inner tube 2 into the outer tube 1, align the shrinking end of the outer tube with one end of the inner tube, and assemble and weld the plug 3 with a small hole 4;
[0025] 4) As shown in Figure 3, the other end of the inner and outer pipes is assembled and welded with a vacuum tooling 6, the front end of the vacuum tooling 6 has a vacuum port 7, the rear end has a sealing packing 8, and the sealing gland 9 presses the sealing packing 8, The inner and outer tubes of this end are sealed, and the vacuum can be evacuated from the vacuu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The present invention relates to production of metal pipe, and is especially production process of double-layer metal pipe. The production process includes the following steps: 1. necking down one end of the outer pipe while maintaining the other end unchanged; 2. derusting the outer surface of the inner pipe and the inner surface of the outer pipe; 3. threading the inner pipe into the outer pipe, aligning the necked end of the outer pipe with one end of the inner pipe, and welding one plug with a small hole; 4. welding one vacuum pumping set to the other end of the double pipe; 5. introducing pressure clean water into the inner pipe; and 6. vacuum pumping the sandwich between the outer and the inner pipes, heating and reducing. The process may be used in industrial production of double layer metal pipe.
Description
(1) Technical field: [0001] The invention relates to a production method of a metal pipe, especially a production method of a double-layer metal pipe. (two) background technology: [0002] At present, the methods for producing double-layer metal pipes generally include internal pressure, diffusion method, vacuum suction casting composite method, plastic deformation lining method (internal pressure makes the inner pipe plastically deformed), explosive composite method, etc. The double-layer metal pipe produced by these methods has a single combination mode, and generally only the inner pipe can be produced to be stainless steel or copper, and the outer pipe is a double-layer metal pipe of carbon steel or low-alloy steel. For pipes made of other materials, such as aluminum or titanium and their alloys, the high temperature during processing will greatly affect the material of the inner pipe, resulting in low bonding strength between the inner and outer pipes, so any combinatio...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/04B23P11/02
Inventor 唐谊光
Owner 唐谊光