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Forging technique of full fiber for hollow cone axis in express locomotive

A technology of high-speed locomotives and hollow cones, applied in the direction of manufacturing tools, mechanical equipment, engine components, etc., can solve the problems of discontinuous and unsmooth metal fibers of hollow cone shafts, improve mechanical properties, ensure reliability and accuracy, and improve performance Effect

Inactive Publication Date: 2008-04-23
DALIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the technical problem that the metal fiber of the hollow cone shaft of a high-speed locomotive is discontinuous and not smooth, and provides a full-fiber forging process for the hollow cone shaft of a high-speed locomotive

Method used

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  • Forging technique of full fiber for hollow cone axis in express locomotive
  • Forging technique of full fiber for hollow cone axis in express locomotive
  • Forging technique of full fiber for hollow cone axis in express locomotive

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specific Embodiment

[0007] Specific embodiment: this high-speed locomotive hollow cone shaft full-fiber forging process of the present invention is shown as accompanying drawing. The process is: (1) Select the hot-rolled seamless steel pipe material which is equivalent to the inner diameter of the tapered shaft body and larger than the outer diameter of the flange end as the steel pipe material. The total volume of process materials such as loss rate is blanked, and the blanking is carried out on the band saw machine. See the blanking diagram figure 1 (2) The forging equipment can choose steam-empty free forging hammer, but it needs to design a reasonable mold, that is to say, adopt the method of semi-fixed die forging on the free forging hammer, the upper die of the anvil die and the hammer head are fixed, The lower die is fixed to the hammer seat, and a conical mandrel needs to be designed and manufactured, and its taper must be consistent with the taper of the inner hole of the hollow cone sha...

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Abstract

A full-fiber forge technology for manufacturing the conic hollow shaft of high-speed locomotive includes such steps as quantitative blanking, choosing steel pipe with proper diameter, fixing upper die to hammer, fixing lower die to hammer base, putting the conic core die in the heated seamless steel pipe, and forging for alternative elongating and shaping. It features the continuously distributed metallic fibers for higher mechanical performance.

Description

Technical field: [0001] The full-fiber forging process of the hollow cone shaft of high-speed locomotives is a process for forging hollow cone shafts of high-speed locomotives with molds for heating workpieces. Background technique: [0002] The hollow shaft of a high-speed locomotive is an important part of the bogie. Its performance directly affects the driving safety of the locomotive. The other end is connected with the three-claw disc. If the cone shaft body and flange are processed separately and then the cone shaft body and flange are welded, the metal fiber of the hollow cone shaft obtained is discontinuous and not smooth, which will inevitably cause problems such as harmful internal stress and low strength. The performance directly affects the driving safety of the locomotive. Invention content: [0003] The invention solves the technical problem that the metal fiber of the hollow cone shaft of the high-speed locomotive is discontinuous and not smooth, and provi...

Claims

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Application Information

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IPC IPC(8): B21K1/12B21J7/38B21J13/02
Inventor 赵益民
Owner DALIAN UNIV
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