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1. (WO2018196263) UPSETTING PROCESS AND APPARATUS FOR BILLET WITH ULTRAHIGH HEIGHT TO DIAMETER RATIO

Pub. No.:    WO/2018/196263    International Application No.:    PCT/CN2017/102240
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Sep 20 01:59:59 CEST 2017
IPC: B21J 5/08
B21J 13/08
Applicants: ZHONGJUXIN OCEAN ENGINEERING EQUIPMENT CO., LTD
中聚信海洋工程装备有限公司
Inventors: ZHANG, Lianhua
张连华
ZHANG, Hui
张晖
MA, Haijun
马海军
CHEN, Baijin
陈柏金
LI, Yuanshi
李远士
Title: UPSETTING PROCESS AND APPARATUS FOR BILLET WITH ULTRAHIGH HEIGHT TO DIAMETER RATIO
Abstract:
An upsetting process and apparatus for a billet with an ultrahigh height to diameter ratio. The billet upsetting apparatus comprises a clamp and a power device; the clamp comprises loose toolings (2, 3, 4) and a die sleeve (7); the power device comprises a fixed anvil (1) and a pressure anvil (5). The loose toolings (2, 3, 4) are capable of coating and clamping a billet (6) along the surface; the die sleeve (7) can be opened and closed; when the die sleeve (7) is opened, the loose toolings (2, 3, 4) that clamp the billet (6) are allowed to enter and exit the cavity of the die sleeve (7); when the die sleeve (7) is closed, the inner wall of the die sleeve (7) clamps the outer surfaces of the loose toolings (2, 3, 4), the fixed anvil (1) abuts against one end of the billet (6), the pressure anvil (5) abuts against the other end of the billet (6), and the pressure anvil (5) extrudes the billet (6) to perform a first process step of upsetting; the inner wall of the die sleeve (7) clamps the upset part of the billet (6) subjected to the first process step of upsetting, the fixed anvil (1) abuts against one end of the billet (6) subjected to the first process step of upsetting, the pressure anvil (5) abuts against the other end of the billet subjected to the first process step of upsetting, and the pressure anvil (5) extrudes the billet (6) subjected to the first process step of upsetting to perform a second process step of upsetting. The upsetting process and apparatus for a billet with an ultrahigh height to diameter ratio resolves the problem of upsetting for a billet with an ultrahigh height to diameter ratio.