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Solid-state welding production method of high-performance conducting rod

A solid-state welding and conducting rod technology, applied in manufacturing tools, welding equipment, non-electric welding equipment, etc., can solve the problems of energy saving and consumption reduction of conducting rods, and achieve the effect of compact structure and high performance

Inactive Publication Date: 2010-06-16
SHAANXI BORDER ELECTRICAL EQUIP MFGCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy-saving and consumption-reducing performance of the conductive rod is thus lacking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 A high-performance conductive rod for a 110KVA high-voltage power grid. Outer diameter Φ90, length 534mm. Solid state welding process parameters, friction speed: 950rpm ~ 1050rpm, friction pressure: 20MPa ~ 25MPa, friction time: 6s ~ 8s. Upsetting pressure: 85MPa~95MPa, upsetting holding time: 4s~6s. On the C200 friction welding machine, the joint or conductor is clamped in the rotating fixture, the pipe body is clamped in the moving fixture, and the welding procedure is controlled by PLC.

[0012] Post-soldering inspection: the silver plating layer is intact, and the resistivity of the welded joint is 8.8×10 -8 Ω·m, tensile strength 301MPa.

Embodiment 2

[0013] Example 2 A high-performance conductive rod for a 330KVA high-voltage power grid. Outer diameter Φ125, length 762mm. Solid state welding process parameters, friction speed: 1000rpm ~ 1100rpm, friction pressure: 18MPa ~ 23MPa, friction time: 7s ~ 9s, upsetting pressure: 80MPa ~ 90MPa, upsetting pressure holding time: 5a ~ 7s. On the C400 friction welding machine, the joint or conductor is clamped in the rotating fixture, the pipe body is clamped in the moving fixture, and the welding procedure is controlled by PLC.

[0014] Post-soldering inspection: the silver plating layer is intact, and the resistivity of the welded joint is 7.8×10 -8 Ω·m, tensile strength 295MPa.

Embodiment 3

[0015] Example 3 A high-performance conductive rod for a 550KVA high-voltage power grid. Outer diameter Φ165, length 1062mm, solid state welding process parameters, friction speed: 1050rpm~1150rpm, friction pressure: 16MPa~20MPa, friction time: 8s~10s, upsetting pressure: 75MPa~85MPa, upsetting pressure holding time: 6s~8s . On the C600 friction welding machine, the joint or conductor is clamped in the rotating fixture, the pipe body is clamped in the moving fixture, and the welding procedure is controlled by PLC.

[0016] Post-soldering inspection: the silver plating layer is intact, and the resistivity of the welded joint is 6.1×10 -8 Ω·m, tensile strength 307MPa.

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Abstract

The invention discloses a solid-state welding production method of a high-performance conducting rod. The electrical resistivity of a forging aluminum LD2CS welding joint is lowered to be about 8.1*10-8omega.m from 6.7*10-7omega.m during melting, the tensile strength is improved to be about 290 MPa from 186 MPa, the welding process has no interference on silver coatings, and the production efficiency is 10-50 times of that of MIG welding. The invention takes momentum moment or thermal coupling generated by the instant precise weaving of rotary and movable welding pieces as welding energy, so that the method does not need other energy and assistant material consumption, has no pollution and is an efficient energy-saving environmental-friendly industrial technology with good quality. A high voltage power transmission and distribution conducting rod has the following solid-state welding parameters: the friction velocity is 950-1150 rpm, the friction pressure is 16-25 MPa, the friction time is 6-10s, the upsetting force is 75-95 MPa, and the dwell time is 4-8 s; on a friction welder, the joint or the conductor of the conducting rod is tightly clamped in a rotary clamp, a tube is tightly clamped in a movable clamp, and PLC is utilized to realize advanced manufacturing technology operation.

Description

technical field [0001] The invention belongs to the technical field of equipment manufacturing, and in particular relates to the advanced manufacturing technology of high-voltage power transmission and distribution high-performance conductive rods. Background technique [0002] The conductive rod is a device used in high-voltage power transmission and distribution equipment to transmit the strong current of the high-voltage grid bus. Its typical features are, made of wrought aluminum LD 2 The CS joint, pipe body and conductor are composed of three parts. In order to reduce the power loss (too large voltage drop) during the operation of the high-voltage power grid, the joint and conductor are required to be silver-plated and then welded to both ends of the pipe body separately. The resistivity of the welded joint is not high. Greater than 3.7×10 -7 Ω·m, the tensile strength is not less than 270MPa. [0003] Known conducting rods are formed by fusion welding. Before weldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/02B23K20/12
Inventor 王忠平程立宏刘锋朱玲
Owner SHAANXI BORDER ELECTRICAL EQUIP MFGCO
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