An automatic butt welding process for nickel-based alloy heat exchange tubes
A nickel-based alloy, automatic welding technology, applied in the direction of welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of difficult welding, achieve the effect of small welding operation space, meet the welding quality requirements, and realize the welding effect
Active Publication Date: 2020-02-07
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The welding process not only needs to ensure that the butt welds of the heat exchange tubes are well fused, but also control the two sides of the welds not to be sunken, and at the same time not exceed the surface of the heat exchange tubes by 0.45mm, and ensure that the φ of the ball is not less than 12.1mm. Tubes are extremely difficult to weld
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
[0081] According to the above welding process provided by the present invention, the nickel-based alloy Incoloy800H heat exchange tubes between the high temperature section of the spiral coil in the high temperature gas-cooled reactor steam generator and the outlet connecting pipe of the space elbow are butt welded, and the specifications of the two heat exchange tubes are Φ19×3 mm, the minimum tube wall spacing of heat exchange tubes is 41mm, and the filling material is IN 82 melting ring 2, the details are as follows:
[0082] Step 1), polish the nickel-based alloy Incoloy800H heat exchange tube end and the IN82 melting ring 2 to be welded to a metallic luster, and wipe it with a white non-woven cloth dipped in acetone until the non-woven cloth does not change color;
[0083] Install a pressure plate of the heat exchange tube welding tool 7 on the end of any heat exchange tube, adjust the relative position of the pressure plate and the tube end; assemble another heat exchange...
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 |
| size | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an automatic welding technology for nickel base alloy heat exchange pipe butt joint. The technology comprises the following steps that a heat exchange pipe I (1), a heat exchange pipe II (3) and a melting ring (2) are assembled; welding equipment is installed and debugged; and welding process parameters are set, and welding is conducted. According to the automatic welding technology for nickel base alloy heat exchange pipe butt joint, the heat exchange pipes are fixed in the mode that the axes are vertical, tools (7) are adopted to assemble the heat exchange pipes and the melting ring to guarantee coaxiality of the heat exchange pipes and the melting ring; and a welding machine head of the welding equipment is matched with the tools (7) for clamping, the positions of a tungsten electrode and the melting ring are controlled, and automatic welding is conducted according to the set welding parameters and the operation requirements. The welding technology is stable in welding process and is implemented in small space with the minimum pipe wall interval being 41 mm, the quality of butt joint welding lines between the nickel base alloy heat exchange pipes can be effectively controlled, the situation that the double sides of the formed welding lines between the nickel base alloy heat exchange pipes do not sink can be controlled, meanwhile, the double sides of the formed welding lines do not exceed the surfaces of the heat exchange pipes by 0.45 mm, the magnitude of the pigging diameter phi is guaranteed, and the property of a heat exchange pipe butt joint connector meets the product requirements.
Description
technical field [0001] The invention relates to an automatic butt joint welding process of nickel-based alloy heat exchange tubes of heat exchanger pressure vessel equipment, in particular to a nuclear power heat exchange main equipment, especially those represented by high-temperature gas-cooled reactors and fast neutron reactors. The butt joint automatic welding process of the nickel-based alloy heat exchange tube of the steam generator of the fourth generation nuclear power technology. Background technique [0002] The high-temperature section of the high-temperature gas-cooled reactor steam generator independently designed by my country and the outlet connecting pipe of the space elbow are connected by nickel-based alloy Incoloy800H heat exchange tubes. The specification of the heat exchange tube is 19mm in outer diameter and 3mm in wall thickness, which is small in diameter and large in wall thickness. [0003] According to the design requirements of the steam generato...
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 Patents(China)
IPC IPC(8): B23K9/167B23K9/235B23K9/02
CPCB23K9/02B23K9/167B23K9/235
Inventor 谢彦武郑明涛王莉伦辛杰邹迪婧杜宁王金龙兖文涛唱岩
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP