JPS57168701A - Deciding method for web waving in rolling of h-steel - Google Patents
Deciding method for web waving in rolling of h-steelInfo
- Publication number
- JPS57168701A JPS57168701A JP56051729A JP5172981A JPS57168701A JP S57168701 A JPS57168701 A JP S57168701A JP 56051729 A JP56051729 A JP 56051729A JP 5172981 A JP5172981 A JP 5172981A JP S57168701 A JPS57168701 A JP S57168701A
- Authority
- JP
- Japan
- Prior art keywords
- web
- rolling
- pass
- stress
- rolling direction
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To decide the presence or absence of web waving beforehand in one pass of screw down in universal rolling by estimating the compressive internal stress in the rolling direction generated during rolling and exerted upon the web, the critical buckling stress in the rolling direction dependent upon the geometrical shape of the web after the pass and the yield stress corresponding to the web temp. after the pass. CONSTITUTION:In universal rolling of H-steel, the internal stress sigma1 in the rolling direction generated in a web 3A by the unequality in the draft distribution between the web 3A and flanges 3B, the critical buckling stress sigma2 in the rolling direction determined by the size of the web 3A after the pass and the yield stress sigma3 corresponding to the temp. of the web 3A after the pass are determined. It is decided that web waving takes place when the magnitude relations thereof are sigma2<sigma1<sigma3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56051729A JPS57168701A (en) | 1981-04-08 | 1981-04-08 | Deciding method for web waving in rolling of h-steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56051729A JPS57168701A (en) | 1981-04-08 | 1981-04-08 | Deciding method for web waving in rolling of h-steel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57168701A true JPS57168701A (en) | 1982-10-18 |
Family
ID=12894973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56051729A Pending JPS57168701A (en) | 1981-04-08 | 1981-04-08 | Deciding method for web waving in rolling of h-steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57168701A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63281701A (en) * | 1987-05-14 | 1988-11-18 | Kawasaki Steel Corp | Manufacture of h-shape steel |
JP2008196346A (en) * | 2007-02-09 | 2008-08-28 | Mazda Motor Corp | Sliding member and its manufacturing method |
-
1981
- 1981-04-08 JP JP56051729A patent/JPS57168701A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63281701A (en) * | 1987-05-14 | 1988-11-18 | Kawasaki Steel Corp | Manufacture of h-shape steel |
JP2008196346A (en) * | 2007-02-09 | 2008-08-28 | Mazda Motor Corp | Sliding member and its manufacturing method |
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