JPS5964751A - Horizontal roll for blooming and rolling - Google Patents
Horizontal roll for blooming and rollingInfo
- Publication number
- JPS5964751A JPS5964751A JP17437782A JP17437782A JPS5964751A JP S5964751 A JPS5964751 A JP S5964751A JP 17437782 A JP17437782 A JP 17437782A JP 17437782 A JP17437782 A JP 17437782A JP S5964751 A JPS5964751 A JP S5964751A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- blooming
- rolling
- horizontal roll
- weight
- 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 claims abstract description 16
- 229910001208 Crucible steel Inorganic materials 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910002804 graphite Inorganic materials 0.000 abstract description 5
- 239000010439 graphite Substances 0.000 abstract description 5
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 210000003739 neck Anatomy 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】 本発明は分塊圧延用水平ロールに関するものである。[Detailed description of the invention] The present invention relates to a horizontal roll for blooming.
一般に分塊圧延用水平ロールには、第１図に示す如き形
状の、軸方向中央部分１２の径が両端部１４の径よシも
大であるロール１ｏが採用されている。これは、その拡
径部１４の断面形状から、「台形ロール」と称されてい
る。図中１６はロールネックである。In general, a horizontal roll for blooming rolling employs a roll 1o having a shape as shown in FIG. 1, in which the diameter of the axially central portion 12 is larger than the diameter of both end portions 14. This is called a "trapezoidal roll" because of the cross-sectional shape of its enlarged diameter portion 14. In the figure, 16 is a roll neck.
この台形ロールによれば圧延面の平行度の高いスラブが
得られる。即ち第２図に示される如き形状の、拡径部の
彦いフラットなロール１８を用いて圧延を行うと、第３
図に示すようにロール１８が圧延圧力によってベンディ
ングを示すようになシ、スラブ２０は第４図に示される
ように中央部の厚みｔ２が両端部の厚みｔｌよりも大き
い太鼓形の断面形状となってしまう。With this trapezoidal roll, a slab with highly parallel rolling surfaces can be obtained. That is, when rolling is performed using a roll 18 having a shape as shown in FIG. 2 and having a flat enlarged diameter portion, the third
As shown in the figure, the roll 18 exhibits bending due to rolling pressure, and the slab 20 has a drum-shaped cross-sectional shape in which the thickness t2 at the center is larger than the thickness tl at both ends, as shown in FIG. turn into.
一方第１図に示される台形ロール１０によれば、第５図
のように、被圧延材はその両端がロール幅方向に容易に
逃げることができるので、フラットなスラブ２２（第６
図）が製造される。On the other hand, according to the trapezoidal roll 10 shown in FIG. 1, both ends of the material to be rolled can easily escape in the roll width direction, as shown in FIG.
Figure) is manufactured.
ところが従来の台形ロール１０は、その胴部が単一の材
質からなるところから拡径部１４が早く摩耗し、ロール
１０がフラットになってしまい、耐用期間が知かいとい
う問題がある。なお、従来台形ロール１０は、強度、耐
熱亀裂性及び靭性が要求され、球状黒鉛鋼製であシ、そ
の硬度は３５〜４５Ｈｓ ｐ程度である。However, since the body of the conventional trapezoidal roll 10 is made of a single material, the enlarged diameter part 14 wears out quickly, causing the roll 10 to become flat, resulting in a problem that the service life is short. Note that the conventional trapezoidal roll 10 is required to have strength, heat crack resistance, and toughness, and is made of spherical graphite steel, and its hardness is about 35 to 45 Hsp.
本発明の目的は上記従来の問題点を解消し、拡径部の耐
摩耗性が高く、耐用期間が大幅に延長される分塊圧延用
水平ロールを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal roll for blooming that eliminates the above-mentioned conventional problems, has a large diameter portion that has high wear resistance, and has a significantly extended service life.
本発明は、７１１・１部の軸方向中央部分が拡径部とさ
れ、この胴部の軸方向両端部分が細径部とされている分
塊圧延用水平ロールにおいて、前記拡径部はＣ０，３〜
０６１１、ＳｉＯ，３〜０９重量％、Ｍ ｎ ０．５−
−１．１重量％、Ｓ ｉ ０．３−０．９重量％、Ｍ
ｎ ０．５−１．１重量％、Ｎ ｉ Ｏ，１−０，３重
トＬＣｒ２．５−４．０重量％、Ｍ ｏ ０．５−１．
０重量％、残部Ｆｅ及び不可避不純物なる組成の鋳鋼製
であることを特徴とする分塊圧延用水平ロールによって
、上記目的を達成するものである。The present invention provides a horizontal roll for blooming rolling in which an axial center portion of a 711.1 part is an enlarged diameter portion and both axial end portions of this body portion are narrow diameter portions, wherein the enlarged diameter portion is C0 ,3~
0611, SiO, 3-09% by weight, Mn 0.5-
-1.1% by weight, Si 0.3-0.9% by weight, M
n 0.5-1.1% by weight, N i O, 1-0, 3-LCr 2.5-4.0% by weight, Mo 0.5-1.
The above object is achieved by a horizontal roll for blooming rolling, which is characterized by being made of cast steel with a composition of 0% by weight, the balance being Fe and unavoidable impurities.
即ち、本発明のロールは、圧延圧力の高い拡径部の耐摩
耗性が高く、一方圧延圧力の低い細径部は拡径部よりも
耐摩耗性が低く摩耗が早いように構成されている。その
ため初期における拡径部及び細径部の相対径差が長期間
にわたって維持されるのである。That is, the roll of the present invention is configured such that the enlarged diameter portion, where the rolling pressure is high, has high wear resistance, while the narrow diameter portion, where the rolling pressure is low, has lower wear resistance than the enlarged diameter portion and wears out faster. . Therefore, the initial relative diameter difference between the enlarged diameter portion and the narrow diameter portion is maintained over a long period of time.
本発明における拡径部の成分限定理由を次に述べる。な
お本発明においてチは、すべて重量％である。The reason for limiting the components of the enlarged diameter portion in the present invention will be described below. In the present invention, all ``chi'' means % by weight.
ＣＴＣは０．３％未満では強度が低下すると共に、０．
６Ｌｉ６を超えると必要以上の炭化物が鋼中に晶出し脆
化するので０．３〜０６％とした。％にＵ、 ４〜０．
５％が好適である。If CTC is less than 0.3%, the strength will decrease, and if CTC is less than 0.3%, the strength will decrease.
If it exceeds 6Li6, more carbides than necessary will crystallize in the steel and cause embrittlement, so it is set at 0.3 to 06%. U in %, 4-0.
5% is preferred.
Ｓ １； Ｓ ｌは０．３％未満ではｖｊ造時に浴湯の
流動１生が低下し、一方、０．９％？超えると脆化する
ので０．３〜０９％とした。特に０．５〜０．７％が好
適である。S 1; If S 1 is less than 0.3%, the fluidity of the bath water during VJ production will decrease, while on the other hand, 0.9%? If it exceeds it, it becomes brittle, so it was set at 0.3 to 09%. Particularly suitable is 0.5 to 0.7%.
Ｍ ｎ ｒ Ｍ ｎは０．５チ未満では強度不足であり
、１．１係を超えると鋳放し時（鋳造後、型を取り外す
時）に、割れの生ずるおそれがあるので０５〜１．１係
とした。特に０．７〜０．９襲が好適である。If M n is less than 0.5 inch, the strength is insufficient, and if it exceeds 1.1 inch, there is a risk of cracking when it is cast (when the mold is removed after casting), so 05 to 1.1 I was in charge. In particular, a range of 0.7 to 0.9 is suitable.
Ｎ Ｉ ； Ｎ ｉは０．１％未満では強度不足とな９
．０．３％を超えると残留オーステナイトが発生し、脆
化するので、０．１〜０．３襲とした。N I ; If N i is less than 0.1%, the strength will be insufficient9
．． If it exceeds 0.3%, retained austenite will be generated and the content will become brittle, so the content was set at 0.1 to 0.3%.
Ｃｒ；Ｃｒは２．５チ未満で線強度不足であシ、４．０
チを超えると熱感受性が強く、使用中噛止め等があった
ときに折損しゃすぐなるので、２．５〜４、０％とした
。特に８．０〜８．５チが好適である。Cr; Cr is less than 2.5 inches, line strength is insufficient, 4.0
If it exceeds 10%, it will be highly sensitive to heat and will easily break if it is jammed during use, so it was set at 2.5% to 4.0%. Particularly suitable is 8.0 to 8.5 inches.
Ｍ ｏ ｉ Ｍ ｏは０５％未満では強度不足となり、
１．０％ヲ超えると鋳放し時に割れが生ずるおそれがあ
るので、０．５〜１．０％とした。特に０．６〜０．９
チが好適である。If Mo i Mo is less than 0.05%, the strength will be insufficient,
If it exceeds 1.0%, cracks may occur during as-casting, so it is set at 0.5 to 1.0%. Especially 0.6-0.9
is preferred.
また、本発明において、細径部１４やロールネック１６
など拡径部１２以外の部分はｃｌ、２〜１．６％、
Ｓ ｉ １．０〜２．０％、 Ｍｎ ０．３〜０．８％
、ＮｉＯ，１〜０．６ ％、 Ｃｒ ０．１−０．８
％残部実質的にＦｅなる組成を有し、Ｈ８Ｄ３５〜４５
程度の球状黒鉛鋼製とするのが好適である。Further, in the present invention, the narrow diameter portion 14 and the roll neck 16
The portion other than the enlarged diameter portion 12 has a cl of 2 to 1.6%,
Si 1.0-2.0%, Mn 0.3-0.8%
, NiO, 1-0.6%, Cr 0.1-0.8
% balance has a composition consisting essentially of Fe, H8D35-45
It is preferable to use a material made of spherical graphite steel.
また拡径部１２は細径部１４よυも直径が２〜８ａｉ度
大きいようにするのが好ましい。Further, it is preferable that the diameter of the enlarged diameter portion 12 is 2 to 8 degrees larger than that of the narrow diameter portion 14.
次に本発明のロールの製造方法の一例を説明する。Next, an example of the method for manufacturing the roll of the present invention will be explained.
この製造方法は、第７図に示す様にロール１゜をその軸
が垂直となるように立てたときに、下部Ｉ、中部■、上
部■の３つの部分に分け、各部分１〜■を順次に鋳造し
てゆくものである。In this manufacturing method, as shown in Fig. 7, when a roll 1° is stood upright with its axis vertical, it is divided into three parts: lower part I, middle part ■, and upper part ■. They are cast sequentially.
まず第８図の如く下部■を、金型２４を用いて鋳込む。First, as shown in FIG. 8, the lower part 2 is cast using a mold 24.
固化後に鋳放し、その上面を機械加ニレスケールを除去
すると共に平面とする。２６は押湯である。After solidification, it is cast as is, and the upper surface is machined to remove the elm scale and to make it flat. 26 is a riser.
次込で第９図の如く、中部■を、金型２８を用いて鋳込
み、同様に固化後鋳放し、その」二面を機械加工した後
、第１０図に示す如く、金型３２を用いて上部■を釣込
む。鋳放し後押湯部３４を切断し、ロール形状を整える
ための機械加工を行なう。Next, as shown in Fig. 9, the middle section (2) is cast using the mold 28, solidified and left to cast in the same manner, and after machining its two sides, a mold 32 is used as shown in Fig. 10. and fish the upper part ■. After casting, the feeder section 34 is cut and machined to adjust the roll shape.
々お上記製造方法は本発明ロールを製造する一例であっ
て、本発明のロールはその他の方法によっても製造可能
である。The above manufacturing method is an example of manufacturing the roll of the present invention, and the roll of the present invention can also be manufactured by other methods.
実施例
胴長２８０（１Ｍ、胴径グ１３００朋、拡径部１２の幅
５００調、拡径部１２と細径部１４との径差４７ｍ ｇ
なる分塊圧延用水平ロールに於て球状黒鉛鋼単一材質（
Ｈ５ｐ ； ４０）からなる従来例に係るロールと、拡
径１（ｓｐｉ５２Ｃｉ０．４５％＋ Ｓｉ ； ０．
６％、 Ｍｎ ； ０．８０％、 Ｎｉ ； ０．１５
％。Example trunk length 280 (1M, trunk diameter 1300 g, width of enlarged diameter part 12 500 m, diameter difference between enlarged diameter part 12 and narrow diameter part 14 47 m g)
The horizontal roll for blooming is made of spherical graphite steel (
H5p; 40) and an expanded diameter 1 (spi52Ci0.45%+Si; 0.
6%, Mn; 0.80%, Ni; 0.15
%.
Ｃｒ；８．２０％、 ＭＯｉ Ｏ，７５’％ ＋拡径部
以外上配球状黒鉛鋼成分の本発明ロールを、第８図〜第
１０図の方法で製造した。同一条件で使用した場合の両
者の耐用期間を測定したところ、本発明ロールは拡径部
の岸耗が極めて少なく、従来例の２倍の耐用期間を有し
ていることが認められた。A roll of the present invention containing Cr; 8.20%, MOi O, 75'% + upper spherical graphite steel components except for the enlarged diameter portion was manufactured by the method shown in FIGS. 8 to 10. When the service life of both rolls was measured when used under the same conditions, it was found that the roll of the present invention had extremely little wear on the expanded diameter portion and had a service life twice as long as the conventional roll.
以上説明した通り、本発明の分塊圧延用水平ロールはそ
の拡径部の耐摩耗性が高く、耐用期間が著しく延長され
るっAs explained above, the horizontal roll for blooming according to the present invention has high wear resistance in its enlarged diameter portion, and its service life is significantly extended.
第１図及び第７図は台形ロールの正面図、第２図は７ラ
ツトロールの正１ｍ図’Ｍ３図及び第５図はそれぞれ圧
延中のロール正面図、第４図及び第６図はそれぞれスラ
ブの斜視図、第８図、第９図および第１Ｏ図は台形ロー
ルの１１！！遣方法を示す断面図である。
１０・・・台形ロール（分塊圧延用水平ロール）。
１２・・・拡径部、 １４・・・両端部、 ２０
．２２・・・スラブ、２４．２８．３２・・・金型、
２ （５，３０，３４，・・・押湯。
代理人 鵜 沼 辰 之
（ほか２名）
第１図
第２図
旧
第３図
第４図
第５図
ｎ
２
第７図
第８図Figures 1 and 7 are front views of trapezoidal rolls, Figure 2 is a regular 1m diagram of a 7 rat roll, M3 and Figure 5 are front views of rolls during rolling, respectively, and Figures 4 and 6 are slabs, respectively. 8, 9 and 10 are perspective views of the trapezoidal roll 11! ! FIG. 10...Trapezoidal roll (horizontal roll for blooming rolling). 12... Expanded diameter part, 14... Both ends, 20
．． 22...Slab, 24.28.32...Mold,
2 (5, 30, 34,... riser. Agent: Tatsuyuki Unuma (and 2 others) Figure 1 Figure 2 Old Figure 3 Figure 4 Figure 5 n 2 Figure 7 Figure 8
Claims (1)
の軸方向両端部分が４０１径部とされている分塊圧延用
水平ロールにおいて、前記拡径部はＣＯ，３〜０．６重
量％、 Ｓ ｉ ０．３〜０．９重量％、Ｍｎ０．５
〜１．１重量％、 Ｎ ｉ Ｏ，１〜０．３重量％、Ｃ
ｒ２．５〜４６０重量％、ＭＯｏ、５〜１．０重量％、
残部Ｆｅ及び不可避不純物なる組成の鋳鋼製であること
を特徴とする分塊圧延用水平ロール。(1) In a horizontal roll for blooming rolling, in which the axially central portion of the body is an expanded diameter portion, and the axially opposite end portions of this body are 401 diameter portions, the expanded diameter portions are CO, 3 to 401 mm. 0.6% by weight, Si 0.3-0.9% by weight, Mn0.5
~1.1% by weight, N i O, 1-0.3% by weight, C
r2.5-460% by weight, MOo, 5-1.0% by weight,
A horizontal roll for blooming rolling, characterized in that it is made of cast steel with a composition of Fe and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17437782A JPS5964751A (en) | 1982-10-04 | 1982-10-04 | Horizontal roll for blooming and rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17437782A JPS5964751A (en) | 1982-10-04 | 1982-10-04 | Horizontal roll for blooming and rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5964751A true JPS5964751A (en) | 1984-04-12 |
Family
ID=15977544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17437782A Pending JPS5964751A (en) | 1982-10-04 | 1982-10-04 | Horizontal roll for blooming and rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5964751A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447302A (en) * | 2013-08-16 | 2013-12-18 | 无锡日冠机电制造有限公司 | Roller for cold-rolled silicon steel |
| CN108034894A (en) * | 2017-12-29 | 2018-05-15 | 天津威尔朗科技有限公司 | A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology |
| CN111139401A (en) * | 2019-12-26 | 2020-05-12 | 中钢集团邢台机械轧辊有限公司 | High-alloy forged steel BD roll and manufacturing method thereof |
-
1982
- 1982-10-04 JP JP17437782A patent/JPS5964751A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447302A (en) * | 2013-08-16 | 2013-12-18 | 无锡日冠机电制造有限公司 | Roller for cold-rolled silicon steel |
| CN108034894A (en) * | 2017-12-29 | 2018-05-15 | 天津威尔朗科技有限公司 | A kind of lost foam casting highly wear-resisting alloy steel power shovel tooth and production technology |
| CN111139401A (en) * | 2019-12-26 | 2020-05-12 | 中钢集团邢台机械轧辊有限公司 | High-alloy forged steel BD roll and manufacturing method thereof |
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