JPS63168259A - Production of hot coil for pure nickel - Google Patents
Production of hot coil for pure nickelInfo
- Publication number
- JPS63168259A JPS63168259A JP31091186A JP31091186A JPS63168259A JP S63168259 A JPS63168259 A JP S63168259A JP 31091186 A JP31091186 A JP 31091186A JP 31091186 A JP31091186 A JP 31091186A JP S63168259 A JPS63168259 A JP S63168259A
- Authority
- JP
- Japan
- Prior art keywords
- slab
- pure nickel
- hot
- heating
- holding
- 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.)
- Granted
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000005098 hot rolling Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 13
- 230000003078 antioxidant effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 6
- 238000005096 rolling process Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 14
- 238000007254 oxidation reaction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 238000009749 continuous casting Methods 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910003271 Ni-Fe Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 230000003405 preventing effect Effects 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 229910000792 Monel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は食品、薬品工業等の苛性ソーダ、電極板、容
器、熱交換器等に多く用いられる純ニッケルホットコイ
ルの製造方法に係り、より詳しくは連続鋳造スラグより
耳割れ、表面疵の少ない高品質の純ニッケルホットコイ
ルを製造する方法に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a method for manufacturing pure nickel hot coils, which are often used in caustic soda, electrode plates, containers, heat exchangers, etc. in the food and pharmaceutical industries, and more specifically relates to a method for manufacturing pure nickel hot coils, which are often used in caustic soda, electrode plates, containers, heat exchangers, etc. in the food and pharmaceutical industries. This invention relates to a method for manufacturing high-quality pure nickel hot coils that have fewer edge cracks and surface defects than casting slag.
従来技術とその問題点
従来の純ニッケルのホットコイルは小型鋳塊をプレス分
塊にてスラブとなし、ステツケルミル、プラネタリ−ミ
ル、または４段レバースミル等で熱間圧延して製造する
方法が一般的であるが、最近では大型鋳塊をプレス分塊
または分塊圧延によりスラブとなし、該スラブよりホッ
トコイルを製造する方法が行なわれている。Conventional technology and its problems Conventional pure nickel hot coils are generally manufactured by forming a small ingot into a slab by press blooming, and then hot rolling it in a Stetskell mill, planetary mill, or four-stage lever mill, etc. However, recently, a method has been used in which a large ingot is made into a slab by press blooming or blooming rolling, and hot coils are manufactured from the slab.
第３図は従来の製造工程を示ずもので、電気炉−ＶＯＯ
＜真空精錬炉）で溶製した大型ｍ塊を分解圧延にてスラ
ブとなし、表面手入後のスラブ表面に酸化防止剤を塗布
して連続熱間圧延を行なう方法である。Figure 3 does not show the conventional manufacturing process.
In this method, a large m-sized block melted in a vacuum refining furnace is decomposed and rolled into a slab, and an antioxidant is applied to the surface of the slab after surface treatment, followed by continuous hot rolling.
大型鋼塊を分塊圧延して得られたスラブは、圧延組織と
なっており結晶粒が細粒化するとともに、熱間加工性が
向上し連続熱間圧延においてホットコイルの耳割れおよ
び加熱温度低下による粒界酸化の軽減により表面疵の減
少が期待できるが、連続鋳造スラブに比べ分塊圧延工程
を必要とするのみならず、鋳塊のトップ・ボトム部切下
げによる歩留低下に伴なう製造コストのアップを余儀な
くされるという欠点があった。このため、連続鋳造にて
スラブを製造し、生産性の高い連続熱間圧延機によりホ
ットコイルを製造する方法が望まれていた。しかしなが
ら、連続鋳造スラブはアズキャストスラブ特有の柱状晶
を有し結品粒径が粗粒のため熱間加工性が悪く、また純
ニッケル材はオーステナイト単相材のため鋳造中オース
テナイト粒界にて低融点の不純物および析出物が濃化し
熱間圧延中の耳割れおよび表面疵となるという問題があ
る。また、純ニッケル材は高Ｎｉ Ｆｅ合金に比べ加
熱時の粒界酸化は少ないが、コイル表面性状を向上させ
るには粒界酸化防止対策が必要である。The slab obtained by blooming a large steel ingot has a rolled structure, with finer grains and improved hot workability. A reduction in surface flaws can be expected due to the reduction of grain boundary oxidation due to the reduction in grain boundary oxidation, but compared to continuous casting slabs, it not only requires a blooming process but also reduces the yield due to the cutting of the top and bottom of the ingot. The drawback was that it forced an increase in manufacturing costs. Therefore, a method has been desired in which slabs are manufactured by continuous casting and hot coils are manufactured by a highly productive continuous hot rolling mill. However, continuous casting slabs have columnar crystals unique to as-cast slabs, and the grain size of the crystals is coarse, resulting in poor hot workability.Also, since pure nickel is a single-phase austenite material, the austenite grain boundaries form during casting. There is a problem in that low melting point impurities and precipitates become concentrated and cause edge cracks and surface flaws during hot rolling. In addition, although pure nickel material has less grain boundary oxidation during heating than high Ni-Fe alloys, measures to prevent grain boundary oxidation are required to improve the coil surface quality.
このため、連続鋳造スラブからホットコイルを製造する
技術は未だ確立されていないのが現状である。For this reason, the technology for manufacturing hot coils from continuously cast slabs has not yet been established.
発明の目的
この発明は従来の前記実状にかんがみてなされたもので
あり、連続鋳造スラブから耳割れ、表面疵の少ない高品
質の純ニッケルホットコイルを製造する方法を提案せん
とするものである。Purpose of the Invention The present invention has been made in view of the above-mentioned conventional situation, and it is an object of the present invention to propose a method for manufacturing high-quality pure nickel hot coils with few edge cracks and surface defects from continuous casting slabs.
問題点を解決するための手段
この発明は連続鋳造スラブより純ニッケルホットコイル
を製造する方法の前記問題点、すなわち連続鋳造スラブ
特有の熱間加工性の悪化、不純物および析出物の濃化に
よる耳割れおよび表面疵、コイル表面性状を向上させる
ために必要な粒界酸化防止対策の３点を解決するための
手段として、■Ｐ、Ｓ等の不純物成分の低減、■スラブ
加熱温度の管理、■適正酸化防止剤の塗布により耳割れ
および表面疵の少ない純ニッケルホットコイルを製造す
る方法を提案するものである。Means for Solving the Problems This invention solves the problems mentioned above in the method of manufacturing pure nickel hot coils from continuous casting slabs, namely the deterioration of hot workability peculiar to continuous casting slabs and the concentration of impurities and precipitates. As a means to solve the three problems of cracking, surface flaws, and grain boundary oxidation prevention measures necessary to improve the coil surface quality, we have: ■ Reduction of impurity components such as P and S, ■ Control of slab heating temperature, and ■ This paper proposes a method for manufacturing pure nickel hot coils with few edge cracks and surface flaws by applying an appropriate antioxidant.
すなわち、この発明はＮｉ≧９９．０％、 Ｆｅ５０．
４０％、Ｃ≦０．１５％、 ＳｉＳ２．３５％、閂ｎ≦
０．３５％、偽≦０．２５％、Ｐ≦０．００８％、Ｓ≦
０．００５％を含有し、残部不可避的不純物よりなる純
ニッケル材の連続鋳造スラブを表面手入れ後、金属Ｃｒ
粉末を主成分とする酸化防止剤を表面に膜厚５０〜３０
０Ｉ！ｍ塗布し、当該スラブを１０８０〜１２００’Ｃ
の温度域に加熱保持後連続熱１間圧延することを特徴と
するものである。That is, this invention has Ni≧99.0%, Fe50.
40%, C≦0.15%, SiS2.35%, bar n≦
0.35%, false≦0.25%, P≦0.008%, S≦
After surface treatment of a continuously cast slab of pure nickel material containing 0.005% of nickel and the remainder consisting of unavoidable impurities, metal Cr
A film thickness of 50 to 30 mm is applied to the surface with an antioxidant mainly composed of powder.
0I! m coating and heat the slab at 1080 to 1200'C.
It is characterized by continuous hot rolling for 1 hour after heating and holding in a temperature range of .
ここで対象鋼の成分を限定した理由について説明する。Here, the reason for limiting the components of the target steel will be explained.
ＮｕはＳＡＥ Ｈ３Ｊ１０８６．ＡＳＴＨＤＳ５６Ｂの
規格で９９．０％以上に定めれており、下記成分Ｃ、Ｓ
Ｌ、 ？、 Ｐ。Nu is SAE H3J1086. The ASTHDS56B standard specifies 99.0% or more, and the following components C and S
L.? , P.
Ｓ、ＣＬＬ等の不純物を極力低下し得られるもので、更
に純度を上げることはコストアップとなる。It is obtained by reducing impurities such as S and CLL as much as possible, and further increasing the purity will increase the cost.
ＳＬ、 ｌｌｎ、 ＣＬＬハＳＡＥ Ｈ３Ｊ１０８６．
ＡＳＴＨＤＳ５６Ｂｋｍ定められた上限値であり、こ
れらの不純物元素は耐食性上可能な限り低い方が望まし
い。SL, lln, CLL HA SAE H3J1086.
This is the upper limit determined by ASTHDS56Bkm, and it is desirable that these impurity elements be as low as possible in terms of corrosion resistance.
ＰはＳと同様粒界に析出し熱間加工時の割れの原因とな
るので０．００８％以下とした。P, like S, precipitates at grain boundaries and causes cracking during hot working, so it was set to 0.008% or less.
Ｓは粒界に析出し熱間変形能を低下させ、熱間加工時の
割れの原因となるので０．００５％以下にすることが望
ましい。Since S precipitates at grain boundaries and reduces hot deformability and causes cracking during hot working, it is desirable to keep it at 0.005% or less.
Ｎｕ中のＣは４３０〜６５０℃の温度範囲で黒鉛として
粒界に析出し脆化の原因となるので０．１５％以下とし
た。Since C in Nu precipitates at grain boundaries as graphite in the temperature range of 430 to 650° C. and causes embrittlement, it was set to 0.15% or less.
また、スラブ加熱温度として１０８０〜１２００℃に限
定したのは、第２図に空気中におけるニッケルとモネル
（７０％Ｎ５３０％Ｃｕ）の酸化状況を示すこと＜（（
ｍｐｈ）は１時間に酸化する金属の厚さ）、純ニッケル
は４２％Ｎｉ Ｆｅ合金等、高Ｎｉ Ｆｅ合金に比
べると加熱中の酸化スケール長は少ないが、ホットコイ
ルの表面に存在する酸化スケールおよび表面疵はその後
の工程でコイル表面研摩機にて除去する必要がある。こ
の表面疵および酸化スケール層を低減するため、この発
明では加熱温度を１０８０〜１２００℃に限定した。す
なわち、加熱温度が１０８０℃未満では連続熱間圧延機
のパワー限界より圧延が困難であり、またかろうじて低
温圧延完了しても耳割れ、表面疵が発生し量産が困難で
あり、他方１２００℃を超えると純ニッケル材の場合酸
化防止剤を塗布してもスラブ表面の酸化が大きくなりホ
ットコイルの耳割れおよび表面酸化スケールにより、そ
の後の工程におけるコイル疵が増加し、工数増および歩
留低下につながるためである。In addition, the reason why we limited the slab heating temperature to 1080 to 1200°C is because Figure 2 shows the oxidation status of nickel and monel (70%N530%Cu) in air.
mph) is the thickness of the metal that oxidizes in one hour), pure nickel has a smaller oxide scale length during heating than high Ni-Fe alloys such as 42%Ni-Fe alloys, but the oxide scale that exists on the surface of the hot coil In the subsequent process, it is necessary to remove surface defects using a coil surface polisher. In order to reduce the surface flaws and oxide scale layer, the heating temperature is limited to 1080 to 1200°C in this invention. In other words, if the heating temperature is less than 1080°C, rolling will be difficult due to the power limit of the continuous hot rolling mill, and even if low-temperature rolling is barely completed, edge cracks and surface flaws will occur, making mass production difficult. If the value exceeds 100%, the oxidation of the slab surface will increase even if an antioxidant is applied to pure nickel materials, resulting in cracks on the edges of the hot coil and surface oxidation scale, which will increase coil flaws in subsequent processes, increasing man-hours and reducing yield. It's about connecting.
また、この発明において、表面手入れ後のスラブ表面に
金ＢＣｒ粉末を主成分とする酸化防止剤を膜厚５０〜３
００証塗布することとしたのは、金属Ｃｒ粉末を主成分
とする酸化防止剤はスラブの熱間加工性の向上と粒界酸
化防止に有効であり、かつ膜厚５０Ｉ未満では効果が十
分に（ｑられず、他方３００〃ｍを超えると塗布作業が
困難で均一に塗布することが難しく、かつ、仮りに厚く
塗布出来ても熱間圧延時押込等表面疵の原因となるばか
りでなく、粒界酸化防止効果は３００μｍで十分であり
それ以上は効果が小さいためでめる。In addition, in this invention, an antioxidant mainly composed of gold BCr powder is applied to the surface of the slab after surface treatment to a thickness of 50 to 30%.
The reason why we decided to apply the 00 proof coating is that the antioxidant whose main component is metallic Cr powder is effective in improving the hot workability of the slab and preventing grain boundary oxidation, and it is not sufficiently effective when the film thickness is less than 50 I. (On the other hand, if the thickness exceeds 300 m, the coating process becomes difficult and it is difficult to apply it uniformly, and even if it is possible to coat it thickly, it not only causes surface defects such as indentation during hot rolling. The grain boundary oxidation preventing effect is sufficient at 300 μm, and the effect is small beyond that, so it is rejected.
従って、スラブ表面に上記酸化防止剤を膜厚５０〜３０
Ｃ１ｔｍ塗布して１０８０〜１２００℃の温度域に加熱
保持後、連続熱間圧延することにより、酸化防止剤と加
熱保持温度域の相乗効果によりスラブの粒界酸化防止が
はかられ、耳割れ、表面疵および酸化スケール層の少な
い純ニッケルホットコイルを製造することが可能となる
。Therefore, the above antioxidant is applied to the slab surface with a film thickness of 50 to 30 mm.
After applying C1tm and holding it in the temperature range of 1080 to 1200°C, continuous hot rolling prevents grain boundary oxidation of the slab due to the synergistic effect of the antioxidant and the heating holding temperature range, preventing edge cracking and It becomes possible to manufacture pure nickel hot coils with few surface defects and oxide scale layers.
第１図はこの発明の製造工程を示すブロック図である。FIG. 1 is a block diagram showing the manufacturing process of this invention.
すなわち、この発明ではオーステナイト粒界に析出する
不純物を低減するため、電気炉−■ＯＤ溶製・精錬時に
Ｐ、Ｓ等の不純物をＪＩＳ規格値に対してＰ≦０．００
８、 ｓ≦０．００２に低下する。溶製後、連続鋳造機
にて純ニッケル材のスラブを製造し、その連続鋳造スラ
ブの表面疵を除去した後、スラブ表面に金属Ｃｒ粉末を
主成分とする酸化防止剤を膜厚５０〜３００１１ｍ塗布
する。続いて、当該スラブを加熱炉にて１０８０〜１２
００℃の温度域に加熱保持後、連続熱間圧延別にて熱間
圧延し純ニッケルホットコイルを製造する。That is, in this invention, in order to reduce impurities precipitated at austenite grain boundaries, impurities such as P and S are reduced to P≦0.00 with respect to JIS standard values during electric furnace OD melting and refining.
8, decreases to s≦0.002. After melting, a slab of pure nickel material is produced using a continuous casting machine, and after removing surface flaws from the continuous casting slab, a film of an antioxidant mainly composed of metal Cr powder is applied to the slab surface to a thickness of 50 to 30,011 m. Apply. Subsequently, the slab was heated to 1080 to 12
After heating and holding in the temperature range of 00°C, the pure nickel hot coil is produced by hot rolling in continuous hot rolling.
実施例
第１表に示す成分を有する純ニッケル材を溶製し、連続
鋳造機にて厚さ１５０ｍｍのスラブを製造し、表面手入
れ後酸化防止剤（主成分二金９．Ｃｒ約６０％）を塗布
し連続加熱炉にて１１８０’Ｃｘ６時間の加熱条件で加
熱した後、連続圧延機にてコイル厚６．０ｍｍのホット
コイルを製造し、得られたホットコイルの耳割れ、表面
疵、酸化層を評価した結果を、第２図に示す従来の方法
により製造したものと比較して第２表に示す。Example A pure nickel material having the components shown in Table 1 was melted, a slab with a thickness of 150 mm was manufactured using a continuous casting machine, and after the surface was treated, an antioxidant (principal component of dimetallic metal 9.Cr approximately 60%) was produced. After coating and heating in a continuous heating furnace under heating conditions of 1180'C x 6 hours, a hot coil with a coil thickness of 6.0 mm was manufactured in a continuous rolling mill, and the resulting hot coil was free from edge cracks, surface flaws, and oxidation. The results of the evaluation of the layers are shown in Table 2 in comparison to those made by the conventional method shown in FIG.
第２表の結果より明らかなごとく、本発明法により製造
されたホットコイルはいずれも良好な表面性状を示した
。As is clear from the results in Table 2, all the hot coils produced by the method of the present invention exhibited good surface properties.
以下余白
第 ２ 表
○：良好
△：やや良好
×：不良
発明の詳細
な説明したごとく、この発明方法はオーステナイト粒界
に析出する不純物の少ない純ニッケル材を溶製し、連続
鋳造スラブの表面に純ニッケル材に適する金属Ｃｒ主成
分の酸化防止剤を適正な膜厚に塗布し、粒界酸化の比較
的少ない加熱温度に保持後連続圧延する方法であるから
、連続鋳造中にオーステナイト粒界に濃化する低融点の
不純物による耳割れおよび表面疵が少なく、また金属Ｃ
ｒ粉末を主成分とする酸化防止剤と加熱保持温度域の相
乗効果によりスラブの粒界酸化防止がはかられ、耳割れ
、表面疵、酸化スケール層の少ない純ニッケルホットコ
イルを歩留よく製造することができ、かつ製造コストの
大幅低減をはかることができる。Table 2 with blank space below ○: Good △: Fairly good This method involves coating a metal Cr-based antioxidant, which is suitable for pure nickel materials, to an appropriate film thickness, holding it at a heating temperature that causes relatively little grain boundary oxidation, and then continuously rolling it. There are fewer edge cracks and surface flaws caused by concentrated low melting point impurities, and metal C
The synergistic effect of the antioxidant mainly composed of R powder and the heating and holding temperature range prevents oxidation at the grain boundary of the slab, producing pure nickel hot coils with a high yield with less edge cracks, surface flaws, and oxide scale layers. It is possible to achieve a significant reduction in manufacturing costs.
第１図はこの発明の製造工程を示すブロック図、第２図
は空気中におけるモネルとニッケルの酸化状況を示す図
、第３図は従来の製造工程を示すブロック図である。FIG. 1 is a block diagram showing the manufacturing process of the present invention, FIG. 2 is a diagram showing the oxidation status of Monel and nickel in air, and FIG. 3 is a block diagram showing the conventional manufacturing process.
Claims (1)
、Ｓｉ≦０．３５％、Ｍｎ≦０．３５％、Ｃｕ≦０．２
５％、Ｐ≦０．００８％、Ｓ≦０．００５％を含有し、
残部不可避的不純物よりなる純ニッケル材の連続鋳造ス
ラブを表面手入れ後、金属Ｃｒ粉末を主成分とする酸化
防止剤を表面に膜厚５０〜３００μｍ塗布し、当該スラ
ブを１０８０〜１２００℃の温度域に加熱保持後連続熱
間圧延することを特徴とする純ニッケルホットコイルの
製造方法。Ni≧99.0%, Fe≦0.40%, C≦0.15%
, Si≦0.35%, Mn≦0.35%, Cu≦0.2
5%, P≦0.008%, S≦0.005%,
After cleaning the surface of a continuously cast slab of pure nickel material, the remainder of which consists of unavoidable impurities, an antioxidant containing metallic Cr powder as a main component is applied to the surface to a thickness of 50 to 300 μm, and the slab is heated in a temperature range of 1080 to 1200°C. A method for producing a pure nickel hot coil, which comprises continuous hot rolling after heating and holding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31091186A JPS63168259A (en) | 1986-12-29 | 1986-12-29 | Production of hot coil for pure nickel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31091186A JPS63168259A (en) | 1986-12-29 | 1986-12-29 | Production of hot coil for pure nickel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63168259A true JPS63168259A (en) | 1988-07-12 |
| JPH0527481B2 JPH0527481B2 (en) | 1993-04-21 |
Family
ID=18010871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31091186A Granted JPS63168259A (en) | 1986-12-29 | 1986-12-29 | Production of hot coil for pure nickel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168259A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008047869A1 (en) * | 2006-10-20 | 2008-04-24 | Sumitomo Metal Industries, Ltd. | Nickel material for chemical plant |
| WO2023062855A1 (en) * | 2021-10-11 | 2023-04-20 | 日本冶金工業株式会社 | Nickel alloy having excellent surface properties and manufacturing method thereof |
-
1986
- 1986-12-29 JP JP31091186A patent/JPS63168259A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008047869A1 (en) * | 2006-10-20 | 2008-04-24 | Sumitomo Metal Industries, Ltd. | Nickel material for chemical plant |
| EP2077338A1 (en) * | 2006-10-20 | 2009-07-08 | Sumitomo Metal Industries Limited | Nickel material for chemical plant |
| JP5035250B2 (en) * | 2006-10-20 | 2012-09-26 | 住友金属工業株式会社 | Nickel materials for chemical plants |
| EP2077338A4 (en) * | 2006-10-20 | 2014-07-30 | Nippon Steel & Sumitomo Metal Corp | Nickel material for chemical plant |
| US8986470B2 (en) | 2006-10-20 | 2015-03-24 | Nippon Steel & Sumitomo Metal Corporation | Nickel material for chemical plant |
| WO2023062855A1 (en) * | 2021-10-11 | 2023-04-20 | 日本冶金工業株式会社 | Nickel alloy having excellent surface properties and manufacturing method thereof |
| DE112022000186T5 (en) | 2021-10-11 | 2023-09-14 | Nippon Yakin Kogyo Co., Ltd. | Nickel alloy with superior surface properties and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0527481B2 (en) | 1993-04-21 |
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