Title:
METHOD FOR IMPROVING FORGING QUALITY OF DISC PORTIONS OF STEERING KNUCKLE
Document Type and Number:
WIPO Patent Application WO/2023/029337
Kind Code:
A1
Abstract:
A method for improving the forging quality of disc portions of a steering knuckle, the method comprising: heating raw materials, preparing a blank, and extruding, pre-forging and finish-forging the blank to form a forged part. Compared with a pre-forging mold cavity, the lug height of an extrusion mold cavity is 0.8-0.9 times the lug height of the pre-forging mold cavity; metal is filled into a lug portion of the extrusion mold cavity and then flows toward a claw portion; the speed at which the metal extends along the extrusion mold cavity toward the claw portion is always greater than the speed at which a flash extends in the same direction; and the thickness (D) of a disc portion of the extrusion mold cavity is 1.2-1.5 times the thickness (D) of a disc portion of the pre-forging mold cavity.
Inventors:
ZHANG YUNJUN (CN)
NI QUANBIN (CN)
CHEN TIANFU (CN)
WU JIANXIANG (CN)
XIA SHAOXIAN (CN)
YANG JIE (CN)
HUANG MINGWEI (CN)
ZUO CHANGBING (CN)
WANG JINGSHANG (CN)
YANG FAN (CN)
ZHANG PENG (CN)
NI QUANBIN (CN)
CHEN TIANFU (CN)
WU JIANXIANG (CN)
XIA SHAOXIAN (CN)
YANG JIE (CN)
HUANG MINGWEI (CN)
ZUO CHANGBING (CN)
WANG JINGSHANG (CN)
YANG FAN (CN)
ZHANG PENG (CN)
Application Number:
PCT/CN2022/070289
Publication Date:
March 09, 2023
Filing Date:
January 05, 2022
Export Citation:
Assignee:
HUBEI TRI RING FORGING CO LTD (CN)
International Classes:
B21J1/04; B21J1/06; B21J5/08; B21J13/02; B21K7/12
Foreign References:
| CN113798418A | 2021-12-17 | |||
| CN112498476A | 2021-03-16 | |||
| DE953401C | 1956-11-29 | |||
| CN110227779A | 2019-09-13 | |||
| CN103302227A | 2013-09-18 | |||
| US20080034830A1 | 2008-02-14 |
Attorney, Agent or Firm:
WUHAN ZHIQUAN PATENT AGENT, LLP. (CN)
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