Manufacturing process of CuNi2Si alloy parts for high-speed railway catenaries
A preparation process, high-speed railway technology, applied in the direction of metal processing equipment, etc., can solve the problems that Libei technology cannot meet the performance requirements of parts, the mechanical performance requirements of parts, and the end of the blank is prone to cracking, etc., to achieve Reasonable heat treatment technology, improved material utilization, and small forming load
Inactive Publication Date: 2015-07-29
中铁建电气化局集团轨道交通器材有限公司
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Problems solved by technology
In the case of large deformation of the heated billet, the forging mechanical properties are unstable, and the end of the blank is prone to cracks, which cannot meet the mechanical performance requirements of the parts, especially for CuNi2Si forgings with steps, which are prone to cracks on the shoulders of the steps even break directly
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[0021] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0022] The preparation process of CuNi2Si alloy parts for high-speed railway catenary of the present invention adopts foreign brand CuNi2Si material as raw material, the supply state is CY state, the metallographic average grain diameter is 0.015~0.035, and the tensile strength is Rm≥380MPa, The Brinell hardness is HB100~130, the elongation after breaking is A≥10%, and the electrical conductivity Ms / m≥12.
[0023] The preparation process includes pre-forging heating technology, forging technology and heat treatment technology carried out in sequence.
[0024] The pre-forging heating technology is controlled by three stages: preheating period, heating period a...
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Abstract
The invention relates to the technical field of high-speed railway catenary part production technologies, in particular to a manufacturing process of CuNi2Si alloy parts for high-speed railway catenaries. The manufacturing process comprises the technology of heating before forging, the forging technology and the heat treatment technology, wherein the technologies are carried out in sequence. The technology of heating before forging is controlled at three stages including the preheating period, the heating period and the soaking period. Because the three-stage technology of heating before forging is adopted in the manufacturing process, blanks are evenly heated, surface oxidation damage of the blanks is reduced, the material utilization ratio is increased, the service life of molds is effectively prolonged, and the quality of forge pieces is effectively improved. With the development of the manufacturing process, the capacity of mass production can be developed, and the requirement for electrification construction of current high-speed railways with the top speed of 350 km / h can be met.
Description
technical field [0001] The invention relates to the technical field of production technology of high-speed railway catenary parts, in particular to the preparation process of CuNi2Si alloy parts for high-speed railway catenary. Background technique [0002] Since my country's first electrified railway was built, electrified railway has made great contributions to national transportation. With the development of society and economy, it is inevitable to put forward higher requirements for train running speed and safety performance. We all know that the catenary is the key to the speed increase of electrified railways. Improving the performance of its parts and stabilizing the quality of parts is the cornerstone to ensure the stable and high-speed operation of the train. [0003] With the steady and rapid development of the domestic high-speed railway business and the continuous improvement of the operating speed of electrified railways, the technical requirements for the ove...
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IPC IPC(8): B21J1/06B21J5/02C22F1/08B24C1/10
Inventor 王旭冯晓河陈可宁蒋建州储文平费津津
Owner 中铁建电气化局集团轨道交通器材有限公司