Copper-iron composite material roll-welded pipe, welding process and welding device
By combining resistive heating and induction heating in the composite copper steel belt process, the heating problem caused by the increase in the thickness of the copper layer is solved, and uniform heating and high-quality welding of copper-iron composite coiled welded pipes are achieved.
CN119658093AActive Publication Date: 2025-03-21SUZHOU CITY JINBANGDI PIPE TECH CO LTD
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Patent Information
- Application Number
- CN202510191667.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2045-02-21
AI Technical Summary
Technical Problem
In the composite copper steel belt process, due to the increase in the thickness of the copper layer, the resistance heating furnace has low thermal efficiency and uneven heating when heating the pipe, resulting in a decrease in welding quality.
Method used
After preliminary heating with a resistive heating furnace, the induction heating device is carried out step by step until the copper reaches the melting point, thereby achieving uniform heating of the pipe and high-quality welding.
Benefits of technology
Through the transition of segmented step-by-step heating, ensure uniform heating of the pipe throughout the circumference, improve welding stability, surface copper layer consistency and welding strength, and avoid the problems of thermal deformation and uneven melting.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a copper-iron composite roll-welded pipe, a welding process and a welding device.The welding process comprises the steps that S1, a copper-iron composite blank pipe rolled into a pipe shape enters a resistance heating furnace to be heated, and the heating temperature ranges from 0 DEG C to 1000 DEG C; s2, the copper-iron composite material blank pipe obtained in the step S1 enters an induction heating device to be subjected to N-section step-by-step induction heating temperature rise, and the heating temperature of induction heating is higher than the heating temperature of the resistance heating furnace in the step S1; the composite coiled material reaches the melting point of copper after the N sections are subjected to induction heating, so that the copper-iron composite material blank pipe is welded, and N is an integer larger than 1; s3, cooling the copper-iron composite material pipe after the N sections of induction heating welding are completed; the problems that heating is not uniform when a copper-iron composite material roll-welded pipe is welded and heated, and the consistency effect is poor after a thickened composite copper layer is welded are solved in a composite heating welding mode.
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