JPS55120424A - Preventing method for scratch flaw in feed reel of temper rolling mill - Google Patents

Preventing method for scratch flaw in feed reel of temper rolling mill

Info

Publication number
JPS55120424A
JPS55120424A JP2595079A JP2595079A JPS55120424A JP S55120424 A JPS55120424 A JP S55120424A JP 2595079 A JP2595079 A JP 2595079A JP 2595079 A JP2595079 A JP 2595079A JP S55120424 A JPS55120424 A JP S55120424A
Authority
JP
Japan
Prior art keywords
coil
reel
outer diameter
mandrel
pressure
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
JP2595079A
Other languages
Japanese (ja)
Other versions
JPS6154482B2 (en
Inventor
Yukio Matsuda
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2595079A priority Critical patent/JPS55120424A/en
Publication of JPS55120424A publication Critical patent/JPS55120424A/en
Publication of JPS6154482B2 publication Critical patent/JPS6154482B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/28—Drums or other coil-holders
    • B21C47/30—Drums or other coil-holders expansible or contractible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/16—Unwinding or uncoiling
    • B21C47/18—Unwinding or uncoiling from reels or drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

PURPOSE:To prevent generation of scratch flaws and reel marks, by increasing the expansion pressure of the core mandrel when the coil's outer diameter is in the scratch generating ragion, and by returning the expansion pressure to the normal state when the coil's outer diameter decreases so far as the reel mark becomes ready to generate. CONSTITUTION:The coil C of the feed reel 1 is supported by the mandrel 11 being driven to expand by the hydraulic cylinder 12; and the successively uncoiled strip S is rolled by the temper rolling mill T and is coiled into the reel R. When the coil, of sheet thickness 0.8mm or thicker and outer diameter 2200mm or larger, is set in the feed reel 1, the initial pressure of the mandrel 11 is set to the specified high pressure. Furthermore, the pulse generator 2 is connected to the reducing roll for detecting the rolling speed of the strip S, and the detecting signal is inputted to the controller 3. On the other hand, the signal, representing r.p.m. of the driving motor 13 for the mandrel 11, is inputted to the controller 3 to operate the actual outer diameter of the coil C. The controller 3 sends out the expansion pressure change command to the change-over circuit 4 and the pressure adjusting circuit 5 both being connected to the hydraulic pressure supply source 6.
JP2595079A 1979-03-06 1979-03-06 Preventing method for scratch flaw in feed reel of temper rolling mill Granted JPS55120424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2595079A JPS55120424A (en) 1979-03-06 1979-03-06 Preventing method for scratch flaw in feed reel of temper rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2595079A JPS55120424A (en) 1979-03-06 1979-03-06 Preventing method for scratch flaw in feed reel of temper rolling mill

Publications (2)

Publication Number Publication Date
JPS55120424A true JPS55120424A (en) 1980-09-16
JPS6154482B2 JPS6154482B2 (en) 1986-11-22

Family

ID=12180028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2595079A Granted JPS55120424A (en) 1979-03-06 1979-03-06 Preventing method for scratch flaw in feed reel of temper rolling mill

Country Status (1)

Country Link
JP (1) JPS55120424A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104525624A (en) * 2015-01-09 2015-04-22 西华大学 Manual hydraulic expansion and shrinkage type winding barrel
CN104525617A (en) * 2014-12-18 2015-04-22 浙江金洲管道科技股份有限公司 Pneumatic positioning mandrel device for uncoilers
CN104690178A (en) * 2015-02-12 2015-06-10 江苏正基电梯部件有限公司 Part clamping device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104525617A (en) * 2014-12-18 2015-04-22 浙江金洲管道科技股份有限公司 Pneumatic positioning mandrel device for uncoilers
CN104525624A (en) * 2015-01-09 2015-04-22 西华大学 Manual hydraulic expansion and shrinkage type winding barrel
CN104690178A (en) * 2015-02-12 2015-06-10 江苏正基电梯部件有限公司 Part clamping device

Also Published As

Publication number Publication date
JPS6154482B2 (en) 1986-11-22

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