JPS63266043A - Roll for hot rolling - Google Patents
Roll for hot rollingInfo
- Publication number
- JPS63266043A JPS63266043A JP9867787A JP9867787A JPS63266043A JP S63266043 A JPS63266043 A JP S63266043A JP 9867787 A JP9867787 A JP 9867787A JP 9867787 A JP9867787 A JP 9867787A JP S63266043 A JPS63266043 A JP S63266043A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- less
- carbide
- weight
- hot rolling
- 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
- 238000005098 hot rolling Methods 0.000 title claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract 3
- 239000000463 material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000011159 matrix material Substances 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000005266 casting Methods 0.000 abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 229910052748 manganese Inorganic materials 0.000 abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract 2
- 229910052758 niobium Inorganic materials 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 229910052720 vanadium Inorganic materials 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 12
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000009750 centrifugal casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は高合金鋼や低温加熱材の圧延または高圧下圧
延のように圧延条件の苛酷な圧延に適した熱間圧延用ロ
ールに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hot rolling roll suitable for rolling under severe rolling conditions, such as rolling of high alloy steel or low-temperature heating materials, or rolling under high pressure reduction.
従来熱間圧延用ロールには、アダマイトロールおよび高
Ｃｒ鋳鉄ロールが使用されていた。アダマイトロールの
化学成分は、重量％でＣ：１．５〜１．８、Ｓｉ： ０
．３〜０．１３ 、 Ｍｎ： ０．５〜１．０ 、
Ｐ ： ０．０２以下、Ｓ ： ０．０１以下、 Ｎｉ
： ０．３〜１．０ 、 Ｃｒ： ０．８〜１．２、
Ｍｅ ： ０．３〜１．０と残部がＦｅからなり、鋼と
鋳鉄の中間に位置する。その金属はマトリックスがソル
バイトであり、その中にＦｅ５Ｃ（セメンタイト）が分
散している。Conventionally, Adamite rolls and high Cr cast iron rolls have been used as rolls for hot rolling. The chemical components of Adamitrol are C: 1.5-1.8, Si: 0 in weight%.
．． 3-0.13, Mn: 0.5-1.0,
P: 0.02 or less, S: 0.01 or less, Ni
: 0.3~1.0, Cr: 0.8~1.2,
Me: 0.3 to 1.0, with the remainder being Fe, and is located between steel and cast iron. The matrix of this metal is sorbite, in which Fe5C (cementite) is dispersed.
また高Ｃｒ鋳鉄ロールの化学成分は１重量％でＣ： ２
．５〜３．Ｑ 、 Ｓｉ ： ０．３〜０．８ 、 Ｍ
ｎ：０．５〜１．２、Ｐ ： ０．０８以下、Ｓ ：
０．０５以下、Ｎｉ ： ０．５〜２．５ 、Ｃｒ：１
５〜２５、Ｍｏ：０．５〜２．０と残部がＦｅからなり
、その特徴は炭化物としてＦｅ５Ｇよりも硬さの高いＣ
ｒ７Ｃ３をベースにしていることである。そのため高Ｃ
ｒ鋳鉄ロールの耐用度は、アダマイトロールのそれより
もシ割はど良好である。In addition, the chemical composition of the high Cr cast iron roll is 1% by weight and C: 2.
．． 5-3. Q, Si: 0.3-0.8, M
n: 0.5-1.2, P: 0.08 or less, S:
0.05 or less, Ni: 0.5 to 2.5, Cr: 1
5 to 25, Mo: 0.5 to 2.0, and the remainder is Fe, which is characterized by C having higher hardness than Fe5G as a carbide.
It is based on r7C3. Therefore, high C
The durability of cast iron rolls is much better than that of Adamite rolls.
上述そた従来の熱間圧延用ロールには、次のようような
問題点があった。The above-mentioned conventional hot rolling rolls had the following problems.
（１）アダマイトロール
熱間での硬さが低いため、耐用度（耐摩耗性）の向上が
期待できず、苛酷な圧延条件に対応できない。(1) Adamite rolls have low hardness when hot, so no improvement in durability (wear resistance) can be expected, and they cannot cope with severe rolling conditions.
（２）高Ｃｒ鋳鉄ロール
アダマイトロールよりも耐用度（耐摩耗性）があるが、
将来現在のロールの耐用度よりも飛躍的に耐用度が向上
することはその化学成分や製造技術から期待できず、ア
ダマイトロール同様苛酷な圧延条件に対応できない。(2) High Cr cast iron rolls are more durable (wear resistant) than Adamite rolls, but
Due to its chemical composition and manufacturing technology, it cannot be expected that the durability will be dramatically improved in the future compared to the current roll durability, and it cannot handle the harsh rolling conditions like Adamite rolls.
この発明は
重量％でＣ： ０．９〜２．３ 、５ｉ ： １．０以
下、Ｍｎ：１．３以上、 Ｐ ： ０．０３以下、Ｓ
： ０．０３以下、Ｃｒ；７．ｆｌｌ〜１０．５、Ｍｏ
：２．０以上、Ｖ ： ０．９〜３．８ 、 Ｃｏ ：
１．７以下、Ｗ ： ４．４〜Ｇ、５ 、 Ｎｂ：
７．０以下を含有し、残部がＦｅおよび不可避的不純物
からなる金属で外殻を構成した熱間圧延用ロールであり
、さらには重量％テＣ： ０．１３〜２．３ 、 Ｓｉ
： １．０以下、Ｍｎ：１．３以上、Ｐ：０．０３以
下、Ｓ ： ０．０３以下、 Ｃｒ： ７．９〜１０．
５、Ｍｏ：２．０以上、Ｖ ： ０．９〜３．８ 、
Ｃｏ ： １．７以下、Ｗ ： ４．４〜６．５ 、
Ｎｂ： ７．０ 以下ヲ含有Ｌ、残部がＦｅおよび不可
避的不純物からなる金属を９００〜１１００℃で焼入れ
し、５００〜８００℃で焼戻してＭＣタイプの二次炭化
物を析出させた材料でロール外殻を構成した熱間圧延用
ロールである。This invention has a weight percentage of C: 0.9 to 2.3, 5i: 1.0 or less, Mn: 1.3 or more, P: 0.03 or less, S
: 0.03 or less, Cr; 7. fll~10.5, Mo
: 2.0 or more, V: 0.9 to 3.8, Co:
1.7 or less, W: 4.4~G, 5, Nb:
7.0 or less, with the balance consisting of Fe and inevitable impurities, and the outer shell is made of metal, and furthermore, the weight percent TeC: 0.13 to 2.3, Si
: 1.0 or less, Mn: 1.3 or more, P: 0.03 or less, S: 0.03 or less, Cr: 7.9 to 10.
5, Mo: 2.0 or more, V: 0.9 to 3.8,
Co: 1.7 or less, W: 4.4 to 6.5,
Nb: 7.0 or less L containing L, the balance consisting of Fe and unavoidable impurities is quenched at 900 to 1100°C and tempered at 500 to 800°C to precipitate MC type secondary carbide. This is a hot rolling roll with a shell.
このように成分を限定したのは以下の理由によるもので
ある。The reason for limiting the components in this way is as follows.
Ｃは鋳造時にＣｒ７Ｇ３タイプの一次炭化物を、また熱
処理することによりマトリックス中にＭＣタイプの二次
炭化物（Ｖ Ｃ、Ｗｅ 、 ＮｂＣ）を形成しマトリッ
クスを強化するが、多過ぎると脆くなり高圧下に耐えら
れる高靭性が確保できず、ロールの折損事故につながる
ので、０．８〜２．３重量％に限定した。C forms Cr7G3 type primary carbide during casting, and MC type secondary carbide (VC, We, NbC) in the matrix by heat treatment to strengthen the matrix, but if it is too much, it becomes brittle and cannot be used under high pressure. Since durable high toughness could not be ensured, leading to roll breakage accidents, the content was limited to 0.8 to 2.3% by weight.
Ｓｉは脱酸剤であり、溶湯の流動性を良くするが。Si is a deoxidizing agent and improves the fluidity of the molten metal.
多過ぎると脆くなるので１．００重量％以下とした。If it is too large, it becomes brittle, so the content was set at 1.00% by weight or less.
Ｍｎは脱酸の補助剤であり、マトリックスを強化するの
で１．３０重量％以上とした。Mn is a deoxidizing aid and strengthens the matrix, so the content was set at 1.30% by weight or more.
ＰおよびＳはロールの材質を脆くするので、それぞれ０
．０３重量％以下とした。P and S make the material of the roll brittle, so they should each be set at 0.
．． 03% by weight or less.
Ｃｒは鋳造時にＣｒ７Ｇ３タイプの炭化物を形成して一
時炭化物を硬くし、熱処理することによりマトリックス
中にＭＣタイプの二次炭化物（ｖｃ、ｗｃ。Cr forms Cr7G3 type carbide during casting to temporarily harden the carbide, and by heat treatment, MC type secondary carbide (vc, wc) is formed in the matrix.
Ｎ ｂＣ）としても析出して硬さを上げ、耐摩耗性を向
上するので下限を７．８重量％とし、上限は炭化物が増
えることによる靭性の低下を考慮して１０．５０重量％
とした。NbC) also precipitates to increase hardness and improve wear resistance, so the lower limit is set at 7.8% by weight, and the upper limit is set at 10.50% by weight considering the decrease in toughness due to an increase in carbides.
And so.
Ｍｏは焼戻し軟化抵抗を高め、−Ｃ炭化物を強化するの
で２．００重量％以上とした。Mo increases resistance to temper softening and strengthens the -C carbide, so the content was set to 2.00% by weight or more.
■は熱処理時にＶＣ炭化物が析出し、硬さを上げ＃摩耗
性を向上させるので下限を０．９重量％とし、多過ぎる
とＶＣ炭化物が多くなり過ぎ、母材強度を低下させるの
で上限を３．８０重量％とした。For ■, VC carbide precipitates during heat treatment, increases hardness and improves wear resistance, so the lower limit is set at 0.9% by weight.If it is too large, VC carbide becomes too large and reduces the strength of the base material, so the upper limit is set at 3%. .80% by weight.
Ｃｏはマトリックスを強化し耐熱性を上げるが、効果が
飽和するので１．７０重量％を上限とした。Although Co strengthens the matrix and increases heat resistance, the effect reaches saturation, so the upper limit was set at 1.70% by weight.
Ｗは熱処理時にＷＣ炭化物が析出し、硬さを上げ耐摩耗
性を向上させるので下限を４．４０重量％とし、多過る
とＷＣ炭化物が多くなりすぎて母材強度を低下させるの
で上限を８．５０重量％とした。The lower limit of W is set at 4.40% by weight because WC carbide precipitates during heat treatment and increases hardness and improves wear resistance. The content was 8.50% by weight.
Ｗｂは一次炭化物を強化するが、多過ぎると母材強度を
低下させるので ７．００重量％以下とした。Wb strengthens the primary carbide, but too much Wb lowers the strength of the base material, so it was set to 7.00% by weight or less.
以上の成分の鋼を鋳造し、鋳造時にＣｒ７Ｃ３の一次炭
化物を析出させる。さらには第２発明のように、熱処理
を行いマトリックス中にＭＣタイプの二次炭化物（ｖｃ
、ｉｔｃ、＊ｂｃ）を析出させる。この時の熱処理条件
は、適正な炭化物を析出させるための９００〜１１００
℃の焼入れと、熱間圧延での耐熱衝撃性および高圧下の
ための高靭性を得るための５００〜８００℃焼戻しく第
１図）がよいことを知見した。Steel having the above components is cast, and Cr7C3 primary carbide is precipitated during casting. Furthermore, as in the second invention, heat treatment is performed to form MC type secondary carbide (VC) in the matrix.
, itc, *bc) are precipitated. The heat treatment conditions at this time are 900 to 1100 to precipitate appropriate carbides.
It has been found that quenching at 500-800°C (Fig. 1) is good for obtaining thermal shock resistance in hot rolling and high toughness for high pressure.
ＭＣタイプの二次炭化物は、第２図にみられるようＭＣ
タイプの二次炭化物は、第２図にみられるようにＦｅ５
Ｃタイプ炭化物や０ｒ７Ｇ３タイプ炭化物よりも硬く耐
摩耗性に優れており、第３図、第４図に示すように７・
ダマイトロールあるいは高Ｃｒ鋳鉄ロールよりも２倍以
上の耐摩耗性を有する。MC type secondary carbide is MC type as shown in Figure 2.
The type of secondary carbide is Fe5 as shown in Figure 2.
It is harder and has better wear resistance than C type carbide and 0r7G3 type carbide, and as shown in Figures 3 and 4, 7.
It has more than twice the wear resistance than Damite rolls or high Cr cast iron rolls.
またこの熱処理によるロール硬さの目標値は。Also, what is the target value of roll hardness due to this heat treatment?
Ｈｓ４５〜８０であるが、アダマイトロールのシャルピ
ー衝撃値が０．３ｋｇｆｍ程度であるのに対し、本発明
ロールのシャルピー衝撃値は０．６〜０．８ ｋｇｆｍ
であり、＃摩耗性とともに高靭性をも兼ね備えている。Although the Charpy impact value of the Adamite roll is about 0.3 kgfm, the Charpy impact value of the roll of the present invention is 0.6 to 0.8 kgfm.
It has both abrasion resistance and high toughness.
鋳造を遠心鋳造法で行えば、これをロールの外殻とし、
ロールの芯部を鋳鋼、鋳鉄および鍛鋼等として、複合化
し靭性を上げるとともにロールの製造コストを下げるこ
とができる。またその組立てる方法も、ロールの芯部が
まだ未凝固の状態の時に芯部の外周に本発明の成分の鋼
を鋳込み、遠心鋳造法で仕上げるか、ロールの外殻のみ
を遠心鋳造法で製造した後、完成しているロール芯部に
挿入し、焼ばめ、拡散固着および溶接等で固定してもよ
い。If casting is performed using the centrifugal casting method, this will be the outer shell of the roll,
The core of the roll can be made of cast steel, cast iron, forged steel, etc. to increase toughness and reduce the manufacturing cost of the roll. The method for assembling the roll is either to cast the steel of the composition of the present invention around the outer periphery of the roll core while it is still in an unsolidified state and finish it using the centrifugal casting method, or to manufacture only the outer shell of the roll using the centrifugal casting method. After that, it may be inserted into the completed roll core and fixed by shrink fitting, diffusion fixing, welding, etc.
外殻が第１表の化学成分の本発明のロールを鋳造した後
、表に示すような熱処理を行い、同じく表に示す硬さの
ロールを製造し、摩耗試験を行った。なお第１表のロー
ルと耐摩耗性を比較したアダマイトロールの化学成分、
熱処理条件およびその硬さも合わせて示した。After casting the rolls of the present invention whose outer shells had the chemical components shown in Table 1, they were subjected to heat treatment as shown in the table, and rolls having the hardness shown in the table were also produced and subjected to wear tests. In addition, the chemical composition of Adamite roll compared with the roll in Table 1 in terms of wear resistance,
The heat treatment conditions and their hardness are also shown.
摩耗試験は第２表の試験材を用い、第３表の圧延条件で
行った。The wear test was conducted using the test materials shown in Table 2 under the rolling conditions shown in Table 3.
第２表
第３表
また対象試験ロールは、第１表のＮＨＣ１〜ＮＨＣ６゜
ＮＨＣＣおよびＡＤ（アダマイトロール）とした、第３
図は圧延荷重が１．５トン、クーラント流量が２．０Ｑ
／ｓｉｎの時のパス回数と平均摩耗深さの関係を。Table 2 Table 3 The target test rolls were NHC1 to NHC6°NHCC and AD (adamite roll) in Table 1.
The figure shows a rolling load of 1.5 tons and a coolant flow rate of 2.0Q.
The relationship between the number of passes and the average wear depth when /sin.
本発明のロールとアダマイトロールとを比較して示した
。この図から明らかなように、本発明のロールのＮ）Ｉ
Ｃ１およびＮＨＣ２のほうが、アダマイトロールに比較
して格段＃摩耗性がよいことが分かる。A comparison between the roll of the present invention and the Adamite roll is shown. As is clear from this figure, the N)I of the roll of the present invention
It can be seen that C1 and NHC2 have much better abrasion resistance than Adamite roll.
第４図（ａ）および（ｂ）は圧延荷重が３．０トン、ク
ーラン） １．５１ ／ｗｉｎの時のパス＠数と平均摩
耗深さおよび摩耗減量の関係を、本発明のロールである
ＮＨＣＣとアダマイトロールとを比較して示した。Figures 4 (a) and (b) show the relationship between the number of passes, average wear depth, and wear loss when the rolling load is 3.0 tons and the coolant is 1.51/win for the roll of the present invention. A comparison between NHCC and Adamitrol is shown.
この場合も第３図同様優れた耐摩耗性を示している。This case also shows excellent abrasion resistance as in Fig. 3.
この発明により、ロールの外殻にＣｒ７Ｃ３タイプの一
次炭化物等を析出させて硬さを上げ、＃摩耗性を向上さ
せることができるとともに、靭性も高くでき、ざらに熱
処理によりＭＣタイプの二次炭化物を析出させた場合は
、圧延負荷や熱負荷の大きい圧延に適用することができ
る。また耐摩耗性が２倍以上に向上するので長時間連続
圧延が可能となるので、ロール原単位の低減ができると
ともに、省資源、省エネルギーにもつながるので、その
工業的効果は大きい。With this invention, it is possible to precipitate Cr7C3 type primary carbide etc. on the outer shell of the roll to increase hardness and improve wear resistance, as well as increase toughness, and rough heat treatment can produce MC type secondary carbide. If precipitated, it can be applied to rolling with large rolling loads and heat loads. In addition, since the wear resistance is improved by more than twice, continuous rolling for a long time is possible, and the roll unit consumption can be reduced, and it also leads to resource and energy savings, which has great industrial effects.
第１図は本発明ロールの熱処理温度と硬度との関係を示
すグラフ、第２図は鋼中炭化物の硬度を比較したグラフ
、第３図はロールのパス回数と平均摩耗深さとの関係を
示すグラフ、第４図（ａ）はロールのパス回数と平均摩
耗深さとの関係を示すグラフ、第４図（ｂ）はロールの
パス回数と摩耗減量との関係を示すグラフである。Figure 1 is a graph showing the relationship between heat treatment temperature and hardness of the roll of the present invention, Figure 2 is a graph comparing the hardness of carbides in steel, and Figure 3 is a graph showing the relationship between the number of roll passes and average wear depth. FIG. 4(a) is a graph showing the relationship between the number of roll passes and average wear depth, and FIG. 4(b) is a graph showing the relationship between the number of roll passes and wear loss.
Claims (1)
Ｍｎ：１．３以上、Ｐ：０．０３以下、Ｓ：０．０３以
下、Ｃｒ：７．９〜１０．５、Ｍｏ：２．０以上、Ｖ：
０．９〜３．８、Ｃｏ：１．７以下、Ｗ：４．４〜６．
５、Ｎｂ：７．０以下を含有し、残部がＦｅおよび不可
避的不純物からなる金属で外殻を構成した熱間圧延用ロ
ール。 ２、重量％でＣ：０．９〜２．３、Ｓｉ：１．０以下、
Ｍｎ：１．３以上、Ｐ：０．０３以下、Ｓ：０．０３以
下、Ｃｒ：７．９〜１０．５、Ｍｏ：２．０以上、Ｖ：
０．９〜３．８、Ｃｏ：１．７以下、Ｗ：４．４〜６．
５、Ｎｂ：７．０以下を含有し、残部がＦｅおよび不可
避的不純物からなる金属を９００〜１１００℃で焼入れ
し、５００〜８００℃で焼戻してＭＣタイプの二次炭化
物を析出させた材料でロール外殻を構成した熱間圧延用
ロール。[Claims] 1. C: 0.9 to 2.3 in weight %, Si: 1.0 or less,
Mn: 1.3 or more, P: 0.03 or less, S: 0.03 or less, Cr: 7.9 to 10.5, Mo: 2.0 or more, V:
0.9-3.8, Co: 1.7 or less, W: 4.4-6.
5. A hot rolling roll having an outer shell made of a metal containing Nb: 7.0 or less, with the remainder consisting of Fe and unavoidable impurities. 2. C: 0.9 to 2.3, Si: 1.0 or less in weight%,
Mn: 1.3 or more, P: 0.03 or less, S: 0.03 or less, Cr: 7.9 to 10.5, Mo: 2.0 or more, V:
0.9-3.8, Co: 1.7 or less, W: 4.4-6.
5. A material containing Nb: 7.0 or less, with the balance consisting of Fe and unavoidable impurities, quenched at 900 to 1100°C and tempered at 500 to 800°C to precipitate MC type secondary carbide. A hot rolling roll with a roll outer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9867787A JPS63266043A (en) | 1987-04-23 | 1987-04-23 | Roll for hot rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9867787A JPS63266043A (en) | 1987-04-23 | 1987-04-23 | Roll for hot rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63266043A true JPS63266043A (en) | 1988-11-02 |
Family
ID=14226143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9867787A Pending JPS63266043A (en) | 1987-04-23 | 1987-04-23 | Roll for hot rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63266043A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2658838A1 (en) * | 1990-02-28 | 1991-08-30 | Hitachi Metals Ltd | COMPOUND ROLL RESISTANT TO WEAR. |
| WO1991019824A1 (en) * | 1990-06-13 | 1991-12-26 | Nippon Steel Corporation | Composite roll for use in rolling and manufacture thereof |
| JPH04214837A (en) * | 1990-08-31 | 1992-08-05 | Kubota Corp | Composite roll |
| WO1993005193A1 (en) * | 1991-09-12 | 1993-03-18 | Kawasaki Steel Corporation | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| JPH0778267B1 (en) * | 1990-06-13 | 1995-08-23 | Shinnippon Seitetsu Kk |
-
1987
- 1987-04-23 JP JP9867787A patent/JPS63266043A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2658838A1 (en) * | 1990-02-28 | 1991-08-30 | Hitachi Metals Ltd | COMPOUND ROLL RESISTANT TO WEAR. |
| WO1991019824A1 (en) * | 1990-06-13 | 1991-12-26 | Nippon Steel Corporation | Composite roll for use in rolling and manufacture thereof |
| AU650271B2 (en) * | 1990-06-13 | 1994-06-16 | Nippon Steel Corporation | Composite roll for use in rolling and manufacture thereof |
| US5419973A (en) * | 1990-06-13 | 1995-05-30 | Nippon Steel Corporation | Composite roll for rolling and process for producing the same |
| JPH0778267B1 (en) * | 1990-06-13 | 1995-08-23 | Shinnippon Seitetsu Kk | |
| JPH04214837A (en) * | 1990-08-31 | 1992-08-05 | Kubota Corp | Composite roll |
| WO1993005193A1 (en) * | 1991-09-12 | 1993-03-18 | Kawasaki Steel Corporation | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| WO1993005192A1 (en) * | 1991-09-12 | 1993-03-18 | Kawasaki Steel Corporation | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| US5316596A (en) * | 1991-09-12 | 1994-05-31 | Kawasaki Steel Corporation | Roll shell material and centrifugal cast composite roll |
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