JPS558372A - H-beam universal rolling method - Google Patents
H-beam universal rolling methodInfo
- Publication number
- JPS558372A JPS558372A JP8170478A JP8170478A JPS558372A JP S558372 A JPS558372 A JP S558372A JP 8170478 A JP8170478 A JP 8170478A JP 8170478 A JP8170478 A JP 8170478A JP S558372 A JPS558372 A JP S558372A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- draft
- less
- temperature
- deformability
- 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
- 238000005096 rolling process Methods 0.000 title abstract 7
- 238000000034 method Methods 0.000 title 1
- 230000007547 defect Effects 0.000 abstract 2
- 229910000655 Killed steel Inorganic materials 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
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 prevent scale defects of laminated sectional structure occurring in the web surface, by hot-rolling killed steel containing Si under specific conditions by means of a universal rolling mill to form a H beam. CONSTITUTION:The heating temperature of the material should be less than 1250 deg. C, but yet higher than the minimum temperature suited to the rolling mill array and product dimensions so that the temperature during rolling may not decline below the transformation point. Also, in order to make the deformability of scale on the web surface equal to the deformability of the matrix in the flange alone draft zone, at least one of the following means, which are the means to adjust the rolling temperature to less than 850 deg.C cooling for a specified period in the rolling pass, the means to set the rolling speed to less than 3.5 m/s, and the means to set the difference in the draft schedule between the flange draft and web draft within 2 to 5%, is applied to prevent scale defects in laminated sectional structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8170478A JPS558372A (en) | 1978-07-04 | 1978-07-04 | H-beam universal rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8170478A JPS558372A (en) | 1978-07-04 | 1978-07-04 | H-beam universal rolling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS558372A true JPS558372A (en) | 1980-01-21 |
Family
ID=13753761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8170478A Pending JPS558372A (en) | 1978-07-04 | 1978-07-04 | H-beam universal rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558372A (en) |
-
1978
- 1978-07-04 JP JP8170478A patent/JPS558372A/en active Pending
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