JPH0377850B2 - - Google Patents
Info
- Publication number
- JPH0377850B2 JPH0377850B2 JP26253485A JP26253485A JPH0377850B2 JP H0377850 B2 JPH0377850 B2 JP H0377850B2 JP 26253485 A JP26253485 A JP 26253485A JP 26253485 A JP26253485 A JP 26253485A JP H0377850 B2 JPH0377850 B2 JP H0377850B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- heating
- heat shield
- furnace
- billet
- 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.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 10
- 238000005098 hot rolling Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、加熱炉による鋼片の加熱方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of heating a steel billet using a heating furnace.
例えば、熱間圧延するに先立つて鋼片を所定温
度に加熱するための連続式加熱炉１は、第７図に
示すように、両側壁に加熱用バーナ２を有し、装
入口１Ａから抽出口１Ｂに向つて鋼片３を順次移
動させ、この間に鋼片３をバーナ２によつて所定
温度に加熱する。
For example, a continuous heating furnace 1 for heating a steel billet to a predetermined temperature prior to hot rolling has heating burners 2 on both side walls as shown in FIG. The steel pieces 3 are sequentially moved toward the opening 1B, and during this time the steel pieces 3 are heated to a predetermined temperature by the burner 2.
このようにして鋼片３を加熱炉１によつて所定
温度に加熱する場合、鋼片３が熱間圧延機に噛み
込み易くするために、鋼片３の圧延開始端部の温
度を高温に加熱し、圧延開始端部から圧延終了端
部に向うに従つて徐々に加熱温度が低下するよう
に鋼片３を加熱する方法、所謂、傾斜加熱方法を
実施することがある。また、鋼片３を熱間圧延す
る際に、鋼片３の圧延開始端部と圧延終了端部と
では、圧延開始時期に若干の時間的ずれがあるの
で、均一な圧延を行なうために上記傾斜加熱方法
を実施することがある。 When the steel billet 3 is heated to a predetermined temperature in the heating furnace 1 in this way, the temperature at the rolling start end of the steel billet 3 is set to a high temperature so that the steel billet 3 is easily caught in the hot rolling mill. A method of heating the steel billet 3 such that the heating temperature gradually decreases from the rolling start end to the rolling end end, a so-called gradient heating method, may be carried out. In addition, when hot rolling the steel billet 3, there is a slight time lag in the rolling start timing between the rolling start end and the rolling end of the steel billet 3. A gradient heating method may be implemented.
従来、上記傾斜加熱を行なう場合には、バーナ
２の配置を変更したり、バーナ２の燃焼制御を行
なつたりしているが、バーナ２の配置は、加熱炉
１を改造しなければ変更できず、また、バーナ２
の燃焼を正確に制御することは難しい。 Conventionally, when performing the above-mentioned gradient heating, the arrangement of the burner 2 has been changed or the combustion of the burner 2 has been controlled, but the arrangement of the burner 2 cannot be changed without modifying the heating furnace 1. Also, burner 2
It is difficult to precisely control the combustion of
従つて、この発明の目的は、加熱炉によつて鋼
片を容易且つ正確に傾斜加熱することができる、
加熱炉による鋼片の加熱方法を提供することにあ
る。
Therefore, an object of the present invention is to provide a heating furnace that can easily and accurately gradient-heat a steel piece.
An object of the present invention is to provide a method for heating a steel billet using a heating furnace.
この発明は、鋼片を熱間圧延するに先立つて、
前記鋼片を加熱炉内に装入して、前記鋼板を所定
温度に加熱する際に、前記鋼片の上方に熱遮へい
板を設け、前記熱遮へい板による熱遮へい効率を
前記鋼板の一方端から他方端にそつて徐々に変化
させ、かくして、前記鋼片の一方端から他方端に
そつて温度勾配をつけたことに特徴を有するもの
である。
In this invention, prior to hot rolling a steel billet,
When charging the steel slab into a heating furnace and heating the steel plate to a predetermined temperature, a heat shielding plate is provided above the steel slab, and the heat shielding efficiency of the heat shielding plate is measured at one end of the steel plate. It is characterized in that the temperature gradually changes from one end to the other end, thus creating a temperature gradient from one end of the steel piece to the other end.
次に、この発明の方法の実施態様を図面を参照
しながら説明する。
Next, embodiments of the method of the present invention will be described with reference to the drawings.
第１図は、この発明の方法の一実施態様によつ
て鋼片を加熱している状態を示す断面図、第２図
は、第１図のＡ−Ａ線断面図である。 FIG. 1 is a sectional view showing a state in which a steel piece is being heated by an embodiment of the method of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG.
第１図および第２図に示すように、連続式鋼片
加熱炉１は、その両側壁に、鋼片３の移動方向に
そつて間隔をあけて複数個の加熱用バーナ２を有
しており、装入口１Ａから炉内に装入された鋼片
３は、炉内を移動する過程でバーナ２によつて所
定温度に加熱され、この後、抽出口１Ｂから炉外
に抽出される。 As shown in FIGS. 1 and 2, the continuous billet heating furnace 1 has a plurality of heating burners 2 on both side walls at intervals along the moving direction of the billet 3. The steel billet 3 charged into the furnace through the charging port 1A is heated to a predetermined temperature by the burner 2 while moving through the furnace, and then extracted out of the furnace through the extraction port 1B.
加熱炉１内の一部には、鋼片３の上方に耐火レ
ンガ、耐熱合金またはセラミツク等でできた熱遮
へい板４が設置されている。熱遮へい板４は、傾
斜させてある。この結果、熱遮へい板４による熱
遮へい効率に差が生じる。即ち、熱遮へい板４と
の間の間隔が広い鋼片３の一方端の加熱温度は一
番高く、熱遮へい板４との間の間隔が狭い鋼片３
の他方端に向うにつれて加熱温度は低くなる。こ
のように、熱遮へい板４を鋼片３の上方に傾斜さ
せて設けることによつて、鋼片３の傾斜加熱がき
わめて容易且つ正確に行なえる。なお、熱遮へい
板４を設ける場所および炉長方向の長さは、第１
図に示したものに限定されないことは勿論であ
る。 A heat shielding plate 4 made of refractory bricks, heat-resistant alloys, ceramics, or the like is installed above the steel pieces 3 in a part of the heating furnace 1 . The heat shield plate 4 is inclined. As a result, a difference occurs in the heat shielding efficiency of the heat shield plate 4. That is, the heating temperature at one end of the steel piece 3 with a wide distance between it and the heat shield plate 4 is the highest, and the heating temperature of the steel piece 3 with a narrow distance between it and the heat shield plate 4 is the highest.
The heating temperature becomes lower toward the other end. By providing the heat shield plate 4 in an inclined manner above the steel piece 3 in this manner, the inclined heating of the steel piece 3 can be performed extremely easily and accurately. Note that the location where the heat shield plate 4 is provided and the length in the furnace longitudinal direction are determined by the first
Of course, it is not limited to what is shown in the figure.
上記熱遮へい板４を第３図に示すように、鋼片
３の上方に、鋼片３の一方端から他方端にそつて
一列に並べて設け、各熱遮へい板４の厚みを熱遮
へい板４の積み重ね数を順次変化させることによ
つて調整し、これによつて、熱遮へい板４による
熱遮へい効率を、鋼片３の一方端から他方端にそ
つて徐々に変化させても良い。 As shown in FIG. 3, the heat shield plates 4 are arranged above the steel piece 3 in a line from one end to the other end of the steel piece 3, and the thickness of each heat shield plate 4 is adjusted to The heat shielding efficiency of the heat shield plate 4 may be gradually changed from one end of the steel piece 3 to the other end.
また、第４図に示すように、熱遮へい板４を鋼
片３の一方端から他方端にそつて一列に並べて設
け、熱遮へい板４の長さを鋼片３の一方端から他
方端にそつて徐々に変化させても良い。 Further, as shown in FIG. 4, the heat shield plates 4 are arranged in a line from one end of the steel slab 3 to the other end, and the length of the heat shield plates 4 is set from one end of the steel slab 3 to the other end. It may also be changed gradually.
さらに、第５図に示すように、熱遮へい板４を
鋼片４上方の任意の場所に設けることによつて、
鋼片４の偏熱が防止できる。 Furthermore, as shown in FIG. 5, by providing a heat shield plate 4 at an arbitrary location above the steel piece 4,
Uneven heating of the steel piece 4 can be prevented.
第６図に、上記熱遮へい板４の取付け構造を示
す。図示されるように、熱遮へい板４は、炉対上
部から吊下げられた垂直アーム５の下端に固定さ
れた梁６間に取り付けられている。垂直アーム５
は、炉体上部に設けられた昇降装置７によつて自
在に昇降する。 FIG. 6 shows the mounting structure of the heat shield plate 4. As shown in FIG. As shown, the heat shield 4 is attached between beams 6 fixed to the lower end of a vertical arm 5 suspended from the top of the furnace. vertical arm 5
can be freely raised and lowered by a lifting device 7 provided at the upper part of the furnace body.
以上説明したように、この発明によれば、加熱
炉によつて鋼片を容易且つ正確に傾斜加熱するこ
とができるといつたきわめて有用な効果がもたら
される。
As explained above, according to the present invention, extremely useful effects such as being able to easily and accurately gradient-heat a steel piece using a heating furnace are brought about.
第１図は、この発明の方法の実施態様によつて
鋼片を加熱している状態を示す断面図、第２図
は、第１図のＡ−Ａ線断面図、第３図〜第５図
は、この発明の方法の他の実施態様によつて鋼片
を加熱している状態を示す断面図、第６図は、熱
遮へい板の取り付け構造を示す断面図、第７図
は、加熱炉の水平断面図である。図面において、
１……加熱炉、２……バーナ、３……鋼片、４
……熱遮へい板、５……垂直アーム、６……梁、
７……昇降装置。
FIG. 1 is a cross-sectional view showing a state in which a steel piece is heated by an embodiment of the method of the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIGS. The figure is a sectional view showing a state in which a steel billet is heated by another embodiment of the method of the present invention, FIG. 6 is a sectional view showing the mounting structure of a heat shield plate, and FIG. 7 is a heating FIG. 3 is a horizontal cross-sectional view of the furnace. In the drawings, 1... heating furnace, 2... burner, 3... steel billet, 4
...Heat shield, 5...Vertical arm, 6...Beam,
7... Lifting device.
Claims (1)
加熱炉内に装入して、前記鋼板を所定温度に加熱
する際に、前記鋼片の上方に熱遮へい板を設け、
前記熱遮へい板による熱遮へい効率を前記鋼板の
一方端から他方端にそつて徐々に変化させ、かく
して、前記鋼片の一方端から他方端にそつて温度
勾配をつけたことを特徴とする、加熱炉による鋼
片の加熱方法。1. Prior to hot rolling the steel billet, when charging the steel billet into a heating furnace and heating the steel plate to a predetermined temperature, providing a heat shield plate above the steel billet,
The heat shielding efficiency of the heat shield plate is gradually changed from one end of the steel plate to the other end, thereby creating a temperature gradient from one end of the steel piece to the other end. A method of heating steel billets using a heating furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26253485A JPS62124216A (en) | 1985-11-25 | 1985-11-25 | Heating method of steel slab by heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26253485A JPS62124216A (en) | 1985-11-25 | 1985-11-25 | Heating method of steel slab by heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62124216A JPS62124216A (en) | 1987-06-05 |
| JPH0377850B2 true JPH0377850B2 (en) | 1991-12-11 |
Family
ID=17377134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26253485A Granted JPS62124216A (en) | 1985-11-25 | 1985-11-25 | Heating method of steel slab by heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62124216A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540258Y2 (en) * | 1987-12-25 | 1993-10-13 | ||
| JP4574081B2 (en) * | 2001-08-09 | 2010-11-04 | キヤノン株式会社 | Manufacturing method of image display device |
| JP5181679B2 (en) * | 2008-01-09 | 2013-04-10 | 新日鐵住金株式会社 | Heating furnace and temperature control method for heated material |
-
1985
- 1985-11-25 JP JP26253485A patent/JPS62124216A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62124216A (en) | 1987-06-05 |
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