Title:
METHOD FOR MANUFACTURING BRAKE DISC FOR RAILWAY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2016/060435
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a new type of method for manufacturing a brake disc for a railway vehicle that can increase the lifespan of the brake disc. To this end, the present invention provides a method for manufacturing a brake disc for a railway vehicle, comprising: a ring rolling process for working a work-piece containing 0.20 to 0.3 wt% of C, 0.4 to 0.7 wt% of Si, 0.35 to 0.80 wt% of Mn, 0.03 wt% or less of P, 0.03 wt% or less of S, 0.5 to 0.01 wt% of Ni, 1.0 to 1.5 wt% of Cr, 0.7 to 1.30 wt% of Mo, 0.3 to 0.01 wt% of Cu, and 0.2 to 0.3 wt% of V, the remainder being Fe, into a ring shape; a primary heat treatment process for performing normalizing heat treatment on the work-piece worked through the ring rolling process; a primary machining process for machining the surface of the work-piece heat-treated in the primary heat treatment process; an inspection process for inspecting for internal flaws of the work-piece, machined in the primary machining process, through a nondestructive inspection; a secondary heat treatment process for performing quenching and annealing heat treatment on the work-piece inspected in the inspection process; and a secondary machining process for machining the work-piece into the final disc shape.
Inventors:
LEE TAE-YOUNG (KR)
Application Number:
PCT/KR2015/010766
Publication Date:
April 21, 2016
Filing Date:
October 13, 2015
Export Citation:
Assignee:
LEE TAE-YOUNG (KR)
International Classes:
C21D8/02; B61H5/00; C22C38/44; C22C38/46
Foreign References:
| KR20100076709A | 2010-07-06 | |||
| KR100435483B1 | 2004-06-10 | |||
| KR20130038520A | 2013-04-18 | |||
| KR100269008B1 | 2000-10-16 |
Other References:
JEONG, HO - SEUNG ET AL.: "Inertia Friction Welding Process Analysis and Mechanical Properties Evolution of Large Rotor Shaft.", PROCEEDING OF KSPE 2009 SPRING CONFERENCE, 3 June 2009 (2009-06-03), pages 185 - 186, XP009502399
Attorney, Agent or Firm:
LEE, HAK-SOO (KR)
이학수 (KR)
이학수 (KR)
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