A production process of high-strength and high-conductivity copper alloy catenary wire
A production process and technology of copper alloy, applied in the field of production process of high-strength and high-conductivity copper alloy catenary wire, can solve the problems of train operation safety hazards, increased processing costs, metal inclusions, etc. Contradictions, the effect of meeting performance requirements
Active Publication Date: 2016-07-06
FUJIKURA HENGTONG AERIAL CABLE SYST +2
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Problems solved by technology
The catenary wire made of such billet has oxygen-free copper grade, pure quality, and the plasticity and toughness of the product have been correspondingly strengthened, but a large amount of "splash" will be generated during the extrusion process. Invisibly increased processing costs
Method used
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Embodiment
[0030] Embodiment: the production process of CTHM150 catenary wire
[0031] 1. Copper alloy rod material obtained by upward citation: under anaerobic conditions, an oxygen-free copper alloy rod with a diameter of Φ30 is obtained by using a Rautomead upward citation continuous casting furnace. In order to meet the two anchor sections of the railway, At the same time, taking into account the effective heat transfer of the heat treatment, the weight of the copper alloy rods obtained by the uplink is 3.5t~4t;
[0032] 2. Cold rolling treatment: use a cold rolling mill to cold-roll the copper alloy rods obtained through uplifting to obtain copper alloy rods with a diameter of Φ23~Φ26.7, take samples and observe their metallographic structure, as shown in the attached figure 1 shown;
[0033] 3. Heat treatment of the cold-rolled copper alloy rod: before heat treatment, vacuumize the furnace chamber of the heat treatment furnace with a vacuum pump, and fill the furnace chamber with ...
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The invention discloses a production technique of a high-strength high-conductivity copper alloy contact network line, which comprises the following steps: introducing upwards to obtain an oxygen-free copper alloy rod, carrying out cold-rolling to a proper size, and carrying out heat treatment to obtain the high-strength high-conductivity copper alloy contact network line. The production technique solves the everlasting contradiction between high strength and high conductivity in the copper alloy contact network line, and satisfies the performance requirements for contact network lines in railway industry. After heat treatment, the high-strength high-conductivity copper alloy contact network line is subjected to secondary cold rolling and drawn to the preset diameter to obtain the contact network line product applied to railways. The production technique has the advantages of simple process and higher production efficiency.
Description
technical field [0001] The invention relates to a series of catenary wire products used in electrified railways, in particular to a production process for high-strength and high-conductivity copper alloy catenary wires. Background technique [0002] Due to the high thermal efficiency, high power and fast speed of electric traction, simple operation and maintenance, reliable operation, the use of secondary energy, no pollution, and zero emissions, electrified railways are the development direction of railway construction. Catenary wire products used in electrified railways, such as catenary wires and catenary cables, are important products needed for railway development. At present, the traditional processes for processing the above-mentioned catenary wires at home and abroad mainly include the following types: [0003] 1. Up-drawing method: direct cold-drawing of the upper-leading rod billet to make catenary wire. The Oxygen content of catenary wires produced by the "upward...
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IPC IPC(8): C22F1/08C21D8/06
Inventor 吴斌杜春雷
Owner FUJIKURA HENGTONG AERIAL CABLE SYST