JPS58196136A - Manufacture of end plate unified with nozzle of pressure vessel - Google Patents

Manufacture of end plate unified with nozzle of pressure vessel

Info

Publication number
JPS58196136A
JPS58196136A JP7663082A JP7663082A JPS58196136A JP S58196136 A JPS58196136 A JP S58196136A JP 7663082 A JP7663082 A JP 7663082A JP 7663082 A JP7663082 A JP 7663082A JP S58196136 A JPS58196136 A JP S58196136A
Authority
JP
Japan
Prior art keywords
blank
nozzle
plate
diameter
die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP7663082A
Other languages
Japanese (ja)
Other versions
JPS625698B2 (en
Inventor
Masahiro Nishitani
Yoshiaki Senda
Original Assignee
Japan Steel Works Ltd:The
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Steel Works Ltd:The filed Critical Japan Steel Works Ltd:The
Priority to JP7663082A priority Critical patent/JPS625698B2/ja
Publication of JPS58196136A publication Critical patent/JPS58196136A/en
Publication of JPS625698B2 publication Critical patent/JPS625698B2/ja
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00Making hollow articles not covered by a single preceding sub-group
    • B21K21/12Shaping end portions of hollow articles
    • B21K21/14Shaping end portions of hollow articles closed or substantially-closed ends, e.g. cartridge bottoms

Abstract

PURPOSE:To form an end plate unified with a nozzle by forging a circular disk from a steel ingot, pressing in a tapered ring to form an annular groove, extending the outside of the groove to form a flat tabular blank, heating the blank and pressing to specified shape. CONSTITUTION:A steel ingot is formed successively to a circular disk by upset forging. A tapered ring 2 having inner diameter nearly equal to outer diameter of the nozzle of an end plate is put at the center, and pressed in applying downward force. Outer part of the annular groove 1a thus formed is forged and extended to form a blank 3. Next, the blank 3 is heated and placed on a lower die 4 and pressed by an upper die 5. At this time, a concavity 4a having curved face corresponding to the tank head to be formed is provided, and a relief 4b for the nozzle is provided at the center of the concavity 4a. The upper die 5 has a convex curved face corresponding to the end plate to be formed, and the diameter is made smaller than inner diameter of the end plate. Thus, contact area with the blank 3 is small, and no ironing is performed. Accordingly, forming is possible by small pressing force.
JP7663082A 1982-05-10 1982-05-10 Expired JPS625698B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7663082A JPS625698B2 (en) 1982-05-10 1982-05-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7663082A JPS625698B2 (en) 1982-05-10 1982-05-10

Publications (2)

Publication Number Publication Date
JPS58196136A true JPS58196136A (en) 1983-11-15
JPS625698B2 JPS625698B2 (en) 1987-02-06

Family

ID=13610684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7663082A Expired JPS625698B2 (en) 1982-05-10 1982-05-10

Country Status (1)

Country Link
JP (1) JPS625698B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110146365A1 (en) * 2009-12-23 2011-06-23 Zimmer Gmbh Method for manufacturing an orthopedic implant
CN103567339A (en) * 2012-08-07 2014-02-12 上海重型机器厂有限公司 Forging method for elliptical seal head of CAP1400 steam generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110146365A1 (en) * 2009-12-23 2011-06-23 Zimmer Gmbh Method for manufacturing an orthopedic implant
CN103567339A (en) * 2012-08-07 2014-02-12 上海重型机器厂有限公司 Forging method for elliptical seal head of CAP1400 steam generator
CN103567339B (en) * 2012-08-07 2016-08-03 上海重型机器厂有限公司 The forging forming method of CAP1400 steam generator ellipsoidal head

Also Published As

Publication number Publication date
JPS625698B2 (en) 1987-02-06

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