JPS561236A - Production of rough shape billet by forging - Google Patents

Production of rough shape billet by forging

Info

Publication number
JPS561236A
JPS561236A JP7648579A JP7648579A JPS561236A JP S561236 A JPS561236 A JP S561236A JP 7648579 A JP7648579 A JP 7648579A JP 7648579 A JP7648579 A JP 7648579A JP S561236 A JPS561236 A JP S561236A
Authority
JP
Japan
Prior art keywords
forging
nonsteady
rough shape
lengthwise direction
compression
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
JP7648579A
Other languages
Japanese (ja)
Other versions
JPS6137020B2 (en
Inventor
Kazuo Watanabe
Hidenori Tokita
Hiroe Nakajima
Yukio Nishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP7648579A priority Critical patent/JPS561236A/en
Priority to DE19792940473 priority patent/DE2940473A1/en
Publication of JPS561236A publication Critical patent/JPS561236A/en
Priority to US06/335,669 priority patent/US4407056A/en
Publication of JPS6137020B2 publication Critical patent/JPS6137020B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Forging (AREA)

Abstract

PURPOSE: To form the rough shape billet section being uniform over the lengthwise direction of material by compressing the portion which has been compressed in a nonsteady part at the previous forging compression operation in the steady part in the next forging compression operation and repeating this.
CONSTITUTION: The forging tool has such a nonsteady part where the rolling reduction becomes gradually smaller in both compression and width directions at the lengthwise end [range of a distance (n) in the lengthwise direction]. Because of the provision of this nonsteady part, the boundary part in the material after forging becomes smooth transistor deformation part and at the time when the next step forging is to be done, this boundary part is applied with the smooth screw-down from the unforged part toward the already forged part, as a result of which the rubbing down of the metal is prevented and the stepping after the completion of the forging is virtually eliminated. By the above tool, the forging compression is repeatedly progressed in the lengthwise direction of the metal material of a square section, whereby the rough shape billet having a recess at the central part in the width direction is produced.
COPYRIGHT: (C)1981,JPO&Japio
JP7648579A 1978-04-07 1979-06-18 Production of rough shape billet by forging Granted JPS561236A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7648579A JPS561236A (en) 1979-06-18 1979-06-18 Production of rough shape billet by forging
DE19792940473 DE2940473A1 (en) 1978-04-07 1979-10-05 METHOD AND DEVICE FOR PRODUCING METAL PROFILES
US06/335,669 US4407056A (en) 1978-04-07 1981-12-30 Method and apparatus for manufacturing metal sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7648579A JPS561236A (en) 1979-06-18 1979-06-18 Production of rough shape billet by forging

Publications (2)

Publication Number Publication Date
JPS561236A true JPS561236A (en) 1981-01-08
JPS6137020B2 JPS6137020B2 (en) 1986-08-21

Family

ID=13606500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7648579A Granted JPS561236A (en) 1978-04-07 1979-06-18 Production of rough shape billet by forging

Country Status (1)

Country Link
JP (1) JPS561236A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61226134A (en) * 1985-03-30 1986-10-08 Mitsubishi Metal Corp Production of modified cross section bar
JPS62101301A (en) * 1985-10-28 1987-05-11 Ishikawajima Harima Heavy Ind Co Ltd Slab forming equipment
WO2016163307A1 (en) * 2015-04-06 2016-10-13 日立金属株式会社 Hot forging die and hot forging method
WO2016163308A1 (en) * 2015-04-06 2016-10-13 日立金属株式会社 Hot forging die and hot forging method
JP2018051617A (en) * 2016-09-30 2018-04-05 日立金属株式会社 Hot forging method
CN109622843A (en) * 2018-12-12 2019-04-16 武汉重工铸锻有限责任公司 The forging method of hammer heart forging stock utilization can be improved

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5326759A (en) * 1976-08-26 1978-03-13 Kobe Steel Ltd Plate material rolling

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5326759A (en) * 1976-08-26 1978-03-13 Kobe Steel Ltd Plate material rolling

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61226134A (en) * 1985-03-30 1986-10-08 Mitsubishi Metal Corp Production of modified cross section bar
JPS62101301A (en) * 1985-10-28 1987-05-11 Ishikawajima Harima Heavy Ind Co Ltd Slab forming equipment
WO2016163307A1 (en) * 2015-04-06 2016-10-13 日立金属株式会社 Hot forging die and hot forging method
WO2016163308A1 (en) * 2015-04-06 2016-10-13 日立金属株式会社 Hot forging die and hot forging method
JPWO2016163307A1 (en) * 2015-04-06 2017-04-27 日立金属株式会社 Die for hot forging and hot forging method
JPWO2016163308A1 (en) * 2015-04-06 2017-05-25 日立金属株式会社 Die for hot forging and hot forging method
JP2018051617A (en) * 2016-09-30 2018-04-05 日立金属株式会社 Hot forging method
CN109622843A (en) * 2018-12-12 2019-04-16 武汉重工铸锻有限责任公司 The forging method of hammer heart forging stock utilization can be improved
CN109622843B (en) * 2018-12-12 2020-07-24 武汉重工铸锻有限责任公司 Forging method capable of improving material utilization rate of hammer core forging

Also Published As

Publication number Publication date
JPS6137020B2 (en) 1986-08-21

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