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Friction welding brass aluminum combination connector and its welding method
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A technology of friction welding and brass, applied in the direction of welding equipment, connection contact material, connection, etc., to achieve the effect of simple structure, high tensile strength and shear strength, and easy processing
Inactive Publication Date: 2010-06-02
NINGBO YINZHOU ZHONGTIAN HYDRAULIC
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[0004] The technical problem to be solved by the present invention is to improve the above-mentioned deficiencies of the prior art, and to provide a yellow metal that not only maintains the advantages of low production cost, easy processing, long service life, etc. Friction Welding Method of Copper-Aluminum Combined Joint
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Embodiment 1
[0029] 1. Use ordinary brass to process it into a regular hexagonal bar with an opposite side of 38mm, L 2 The φ41mm round bar made of pure aluminum, the surface is cleaned, blown and dried, and the burr and oxide layer are removed;
[0030] 2. Machining one end of the brass bar into a welding flange;
[0031] 3. Put L 2 One end of the pure aluminum bar is cut to remove the oxide layer to process the welding plane;
[0040] Start the friction welding machine, preheat the fixture to 105°C, clamp the brass weldment on the rotating fixture, clamp the pure aluminum weldment on the moving fixture, and move the pure aluminum weldment through the br...
Embodiment 2
[0043] The brass weldment used is a regular hexagonal bar with an opposite side of 30mm, and the pure aluminum weldment is a pure aluminum round bar with a diameter of φ35mm. The parameters of the welding machine are:
[0044] 1) Friction pressure: 12KN;
[0045] 2) Primary friction time: 25s;
[0046] 3) Secondary friction time: 1s;
[0047] 4) Host speed: 450r / min;
[0048] 5) Friction upsetting pressure: 20KN;
[0049] 6) Pressure holding time for upsetting: 2s.
[0050] Others are with embodiment 1.
Embodiment 3
[0052] The brass weldment used is a regular hexagonal bar with an opposite side of 40mm, and the pure aluminum weldment is a pure aluminum round bar with a diameter of φ45mm. The parameters of the welding machine are:
[0060] For the welded assembly obtained in the above examples, its tensile strength was determined to be ≥ 30 MPa; the shear strength ≥ 50 MPa. It can be used for female and male joint components in power connection devices of wind power generation and other equipment.
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Abstract
The invention discloses a combined jointer for frictionally weldingbrass aluminum and welding method. The brass aluminum combined jointer comprises a pure aluminum welding piece (3) and a brass welding piece (1) welded with the convex edge (2) along the direction of axial line; the brass welding piece (1) and the pure aluminum welding piece (3) are frictionally welded as the brass aluminum combined jointer (5); one end of the pure aluminum welding piece (3) is a welding groove inosculated with the convex edge (2). The welding method of the brass aluminum combined jointer of the invention is following: processing one end of the brass welding piece as the welding convex edge; the welding surface of the pure aluminum welding piece is processed as a plane; setting the technical parameter forthe frictional welder, ore-heating the clamper of the welder and clamping the brass welding piece and the pure aluminum welding piece tightly on the welder, processing the frictional welding, then placing the welded welding component to an insulation box for cooling slowly. The invention solves the frictionally welding of the brass and the pure aluminum; the obtained welding piece has a reliable intensity, a stable performance, a low cost and suitable mass production.
Description
technical field [0001] The invention relates to the technical field of friction welding, in particular to a friction welding method for brass-aluminum composite joints. Background technique [0002] Usually the power connection device used in the power system, the main components of the concave and convex joints are mostly made of pure copper (copper), because the copper can not be directly connected with the aluminum core wire in the power connection device, when designing the structure The tail of the joint is welded with a part of pure aluminum handle by friction welding method to connect the soft core aluminum wire. Welded pure copper-aluminum combined junctions are widely used in power connection devices. However, although pure copper has excellent electrical conductivity and plasticity, it is difficult to achieve precise machining due to the lack of sufficient strength and hardness of pure copper. And there are deficiencies such as high cost, and use has certain limit...
Claims
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