Train wheel rotary forging forming method

A train wheel and swing rolling machine technology, which is applied in the direction of wheels, web-type wheels, vehicle parts, etc., to achieve the effects of reducing equipment tonnage, small deformation force, and low noise

Inactive Publication Date: 2018-07-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems and deficiencies in the existing train wheel forming methods, the present invention provides a train wheel swing forming method

Method used

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  • Train wheel rotary forging forming method
  • Train wheel rotary forging forming method

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Embodiment Construction

[0025] The present invention is further described below in conjunction with accompanying drawing.

[0026] a. The continuous casting billet is cut to obtain a Ф380×432mm billet and heated to 1200°C;

[0027] b. Press preform: Upsetting and punching the blank on a 50MN press to obtain a preform. The size of the preform is: outer diameter Ф846mm, inner diameter Ф198mm, thickness 86.9mm;

[0028] c. Rotary rolling preforming: preforms are obtained on the first rotary rolling machine. The preformed blanks need to be reasonably distributed to the metal at the web, hub, and rim, so that the metal can be completely formed when the rotary rolling is finally formed. Fill the mold cavity;

[0029] d Rotary rolling final forming: the heated preform is finally formed on the second rotary rolling machine to obtain the train wheel rotary rolling piece.

[0030] The specific operation of step c in this embodiment is as follows: put the preform into the lower mold of the first swing rolling...

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Abstract

The invention belongs to the field of wheel-shaped part hot forging forming, and particularly relates to a train wheel rotary forging forming method. The method comprises the following steps that a, acontinuous casting steel billet is cut to obtain a blank with the diameter phi being 380*432 mm and heated to 1200 DEG C; b, a precast blank is obtained through a pressure machine, particularly, theblank is subjected to upsetting and punching on the 50MN pressure machine to form the precast blank, and the hole diameter and outer diameter of the precast blank are controlled in the working procedure to be approximate to the size of a cavity which is adopted during rotary forging final forming; c, rotary forging preforming is carried out, particularly, a preformed blank is obtained from the precast blank on a first rotary forging press, metal at the positions of a well disc, a hub and a rim needs to be reasonably distributed according to preformed blank materials, and therefore the cavity of a die can be completely filled with the metal when the rotary forging is finally formed; and d, rotary forging final forming is carried out, and particularly, a train wheel rotary forged part is formed from the preformed blank on a second rotary forging press. The problems and defects existing in existing train wheel forming methods are well solved, the train wheel size precision and concentricity can be improved, the cutting amount can be reduced, large-power forming equipment is not needed, and the working environment of workers is improved.

Description

technical field [0001] The invention belongs to the field of hot forging forming of wheel-shaped parts, and in particular relates to a train wheel swing forming method. Background technique [0002] The train wheel is an important running part of a railway vehicle. It is responsible for: bearing the weight of the vehicle body; transmitting driving force and braking force; absorbing frictional heat, etc. in railway transportation, which is extremely important for the safe transportation of railway vehicles. The development trend of railway transportation in the direction of high speed and heavy load puts forward higher requirements for the mechanical properties and shape and dimension accuracy of train wheels. Therefore, it is of great significance for my country's railway transportation industry to study new forming methods of train wheels and improve the mechanical properties and quality of train wheels. [0003] Existing train wheels are mainly divided into cast steel whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H1/04
CPCB21H1/04
Inventor 寇淑清田亚楠陈庆敏赵勇
Owner JILIN UNIV
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