JPH0610034A - Method for heating metal in high-temperature roller hearth furnace, and furnace equipment for excecuting same - Google Patents
Method for heating metal in high-temperature roller hearth furnace, and furnace equipment for excecuting sameInfo
- Publication number
- JPH0610034A JPH0610034A JP1900293A JP1900293A JPH0610034A JP H0610034 A JPH0610034 A JP H0610034A JP 1900293 A JP1900293 A JP 1900293A JP 1900293 A JP1900293 A JP 1900293A JP H0610034 A JPH0610034 A JP H0610034A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- heated
- rollers
- roller
- slab
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G13/00—Roller-ways
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、上部加熱装置および下
部加熱装置と、被加熱材料の搬送のために炉横向きに設
けられた特に冷却される炉ローラとを備えた高温ローラ
ハース炉内で、金属被加熱材料、特に薄いスラブ、薄板
および鋼帯を加熱する方法およびこの方法を実施するた
めの炉設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high temperature roller hearth furnace equipped with an upper heating device and a lower heating device, and a furnace roller provided in a horizontal direction for conveying a material to be heated, which is particularly cooled, The invention relates to a method for heating metallic heated materials, in particular thin slabs, sheets and strips, and furnace equipment for carrying out this method.
【０００２】[0002]
【従来の技術】広幅列または厚板列で仕上げ圧延される
薄いスラブ、薄板および鋼帯は、最初の圧延スタンドに
入る前に、約１０５０〜１２５０°Ｃの圧延温度まで予
熱しなければならない。この予熱のためにしばしば、燃
料加熱のローラハース炉、ウォーキングビーム炉または
電気誘導加熱炉が使用される。BACKGROUND OF THE INVENTION Thin slabs, strips and strips that are finish rolled in wide or thick strips must be preheated to a rolling temperature of about 1050-1250 ° C. before entering the first rolling stand. Fuel preheated roller hearth furnaces, walking beam furnaces or electric induction furnaces are often used for this preheating.
【０００３】ヨーロッパ特許出願公開第０３１３７２６
号明細書によって、次のような炉が知られている。すな
わち、被加熱材料がローラウォーキングハースシステム
またはローラウォーキングビームシステムを介して炉室
を通って不連続的に搬送される炉が知られている。この
搬送ローラは炉側壁の外側で被加熱材料搬送方向に対し
て横方向に往復運動可能に設けられ、被加熱材料搬送の
短い時間だけ適当な炉切欠きを通って炉室の被加熱材料
片の下方へ移動させられる。搬送ローラを持ち上げる際
または載置台を降ろすときに、搬送ローラは被加熱材料
を受取り、短時間の回転運動によってこの被加熱材料を
歩進的に前方へ運搬する。European Patent Application Publication No. 0313726
From the specification, the following furnace is known. That is, furnaces are known in which the material to be heated is conveyed discontinuously through a furnace chamber via a roller walking hearth system or a roller walking beam system. The conveying roller is provided outside the side wall of the furnace so as to be capable of reciprocating in the lateral direction with respect to the conveying direction of the material to be heated. Is moved below. When the transport roller is lifted or when the mounting table is lowered, the transport roller receives the material to be heated and conveys the material to be heated forward step by step by a short-time rotational movement.
【０００４】燃料で加熱されるローラハース炉またはウ
ォーキングビーム炉の場合、所定の炉出力に関して、炉
の長さは特に最大許容炉温度と、搬送ローラまたは搬送
ビームの数と軸間隔によって決まる。In the case of a fuel-heated roller hearth furnace or a walking beam furnace, for a given furnace power, the length of the furnace depends in particular on the maximum permissible furnace temperature and on the number of carrier rollers or carrier beams and the axial distance.
【０００５】例えば１０〜３０ｍｍの厚さの薄いスラブ
の場合には、約１１００°Ｃに加熱される薄いスラブが
搬送時に折れ曲がらないようにするために、ローラ軸間
隔はローラ直径よりもわずかだけ大きくすることができ
る。For example, in the case of a thin slab having a thickness of 10 to 30 mm, in order to prevent the thin slab heated to about 1100 ° C. from bending during transport, the roller shaft spacing is slightly smaller than the roller diameter. Can be large.
【０００６】約１３００°Ｃの炉温度の場合には、負荷
下の充分な安定性および寿命を得るために、炉ローラを
水冷しなければならない。薄いスラブまたは薄板の下面
は炉ローラによって高温炉室に対して遮蔽され、同時に
ローラ表面温度が薄いスラブの温度または薄板温度より
も低いときに冷却される。これによって、薄いスラブま
たは薄板のための必要な加熱時間はかなり長くなる。こ
の問題は炉の長さを非常に長くする（２倍にする）こと
によって除去可能である。At furnace temperatures of about 1300 ° C., the furnace rollers must be water cooled in order to obtain sufficient stability under load and longevity. The lower surface of the thin slab or sheet is shielded by the furnace rollers against the hot furnace chamber and at the same time cooled when the roller surface temperature is below the temperature of the thin slab or sheet temperature. This considerably increases the required heating time for thin slabs or sheets. This problem can be eliminated by making the furnace length very long (doubled).
【０００７】その結果、熱消費および冷却水消費が非常
に不所望であり、設備コストが高くなる。As a result, heat consumption and cooling water consumption are very undesired and the equipment costs are high.
【０００８】[0008]
【発明が解決しようとする課題】本発明の課題は、上記
問題が発生せず、非常に少ない数の炉ローラを備えた短
い高温ローラハース炉を使用することができる、冒頭に
述べた方法と炉設備を提供することである。SUMMARY OF THE INVENTION The object of the invention is to avoid the above-mentioned problems and to use a short high-temperature roller hearth furnace with a very small number of furnace rollers, the method and furnace mentioned at the outset. It is to provide facilities.
【０００９】[0009]
【課題を解決するための手段】この課題を解決するため
に、被加熱材料が断面係数を大きくするために、炉に入
る前または炉に入るときに変形させられ、この変形が炉
を通過する間維持されることが提案される。これによっ
て、ローラ間隔または搬送ビーム間隔が大きな高温ロー
ラハース炉または類似の炉内で、薄い材料を加熱するた
めの前提が作られる。In order to solve this problem, the material to be heated is deformed before or at the time of entering the furnace in order to increase the section modulus, and this deformation passes through the furnace. It is suggested to be maintained for a while. This creates a premise for heating thin materials in high temperature roller hearth furnaces or similar furnaces with large roller spacing or carrier beam spacing.
【００１０】被加熱材料の変形は炉を出るときまたは出
た後で再び取り除くことができる。炉を通過する前の変
形装置と通過した後の変形装置を組み合わせることによ
って、炉を通過する間薄板の抵抗モーメントを高めるこ
とができるので、炉内でのローラの間隔が非常に大きく
なり、被加熱材料を下側と上側からほとんど均一に加熱
することができる。変形によって更に、被加熱材料を側
方の縁部範囲においてのみ炉内の炉ローラ上に載せるこ
とができる。これは炉内での被加熱材料の載置面積の縮
小を生じ、下側からの均一な加熱を改善する。The deformation of the material to be heated can be removed again on or after leaving the furnace. By combining the deforming device before passing through the furnace and the deforming device after passing through the furnace, it is possible to increase the resistance moment of the thin plate while passing through the furnace, so that the distance between the rollers in the furnace becomes very large and The heating material can be heated almost uniformly from below and above. The deformation also allows the material to be heated to rest on the furnace rollers in the furnace only in the lateral edge areas. This reduces the footprint of the heated material in the furnace and improves uniform heating from below.
【００１１】側方の載置面の間の変形は本発明に従い、
特に上向きの反り部からなっている。本発明では更に、
被加熱材料の変形の程度または被加熱材料の反りの程度
に依存して、運転中でも炉ローラの軸方向摺動によって
載置面積を調節することができる。これにより、炉内で
の有効なローラ支持面積を最小に抑えることができ、そ
れによって必要な熱および冷却水を減らすことができ
る。The deformation between the lateral mounting surfaces is according to the invention
In particular, it consists of an upward warp. In the present invention,
Depending on the degree of deformation of the material to be heated or the degree of warpage of the material to be heated, the mounting area can be adjusted by axial sliding of the furnace roller even during operation. This minimizes the effective roller bearing area in the furnace, thereby reducing the required heat and cooling water.
【００１２】変形された被加熱材料は好ましくは炉を通
過する間炉内で段差部または支持カラーによってまたは
別個の案内ローラによって炉ローラ上を側方へ案内され
る。それによって、耐火性側壁の万一の損傷や製造障害
が回避される。The deformed material to be heated is preferably guided laterally on the furnace rollers by means of steps or support collars or by separate guide rollers in the furnace during passage through the furnace. This avoids accidental damage to the refractory sidewalls and manufacturing failures.
【００１３】本発明による方法を実施するために、次の
ような炉設備が提案される。すなわち、上部加熱装置お
よび下部加熱装置と、被加熱材料の搬送のために炉横向
きに設けられ炉縦方向に間隔をおいて分配配置された特
に冷却される炉ローラとを備え、炉入口の手前または炉
入口に、場合によっては更に炉出口の手前または炉出口
に、変形装置が設けられている炉設備が提案される。こ
の変形装置はそれ自体公知のローラ装置からなっていて
もよい。５０ｍｍ以下の厚さの被加熱材料を用いるとき
に、炉ローラの相互間隔は１０００〜２０００ｍｍ、特
に１０００〜１５００ｍｍとすることができる。この場
合にも、ローラハース炉内でも１３００°Ｃ以上の炉温
度を達成することができる。In order to carry out the method according to the invention, the following furnace equipment is proposed. That is, an upper heating device and a lower heating device are provided, and a furnace roller, which is provided in a transverse direction of the furnace for conveying the material to be heated and is distributed and arranged at intervals in the longitudinal direction of the furnace, is particularly cooled. Alternatively, a furnace installation is proposed in which the deformation device is provided at the furnace inlet, and possibly before the furnace outlet or at the furnace outlet. This deformation device may consist of a roller device known per se. When using a heated material with a thickness of 50 mm or less, the mutual spacing of the furnace rollers can be 1000-2000 mm, in particular 1000-1500 mm. Also in this case, the furnace temperature of 1300 ° C. or higher can be achieved even in the roller hearth furnace.
【００１４】[0014]
【実施例】添付の図１，２および３に基づいて本発明を
例示的に詳しく説明する。図１のローラハース炉１は炉
ローラ２を備えている。この炉ローラは炉側壁３の開口
を通って炉内で予め定めた位置を占めることができる。
炉ローラ２のその都度のヘッド間隔４は成形された加熱
すべき薄いスラブ６または薄板の幅に依存する。薄いス
ラブ６はその縁部領域７だけが炉ローラ２によって支持
される。それによって、薄いスラブの最大許容幅の場合
（通常の場合）には、炉ローラ長さの一部が高温の炉内
で有効利用される。これによって、熱損失と冷却水損失
がかなり少なくなる。最大ローラ間隔を達成可能にする
ために、本発明では、炉入口のすぐ手前で適当な変形装
置によって薄いスラブ５（図３参照）に機械的な変形部
（プロフィル成形部）６（図２参照）が形成される。変
形（成形）された薄いスラブ６の断面係数は平らなスラ
ブ５の断面係数よりもかなり大きい。ローラ間隔は大幅
に（例えば軸間隔２０００ｍｍまで）拡大可能である。
それによって薄いスラブの下面は遮蔽されず、かつ一般
的に水冷される炉ローラ２による強い冷却作用を受けな
い。結果は薄いスラブのほとんど両面の加熱である。こ
れによって、必要な加熱時間と炉長さは最適になるかま
たは短縮される。必要な熱と冷却水および炉ローラの数
は最小に抑えられる。少ないローラ数によって、同時に
高温炉内での短い有効ローラ支持長さによって、既に例
えばウォーキングビーム式加熱炉で数年来実証されてき
た炉ローラを使用することができる。更に、（有効支持
範囲の外側での）この炉ローラの外側絶縁が可能であ
る。薄いスラブが炉から出るや否や、変形部は図示して
いない適当な装置によって再び除去される。それによっ
て、その後の巻取りまたは圧延が可能である。The present invention will be described in detail with reference to the accompanying drawings 1, 2 and 3. The roller hearth furnace 1 of FIG. 1 includes a furnace roller 2. This furnace roller can occupy a predetermined position in the furnace through an opening in the furnace side wall 3.
The respective head spacing 4 of the furnace roller 2 depends on the width of the formed thin slab 6 or sheet to be heated. The thin slab 6 is supported only by its edge area 7 by the furnace roller 2. Thereby, in the case of the maximum allowable width of the thin slab (normal case), a part of the length of the furnace roller is effectively used in the high temperature furnace. This results in significantly lower heat and cooling water losses. In order to be able to achieve the maximum roller spacing, according to the invention, a mechanical deformation (profile forming) 6 (see FIG. 2) is applied to the thin slab 5 (see FIG. 3) by means of a suitable deformation device just before the furnace inlet. ) Is formed. The section modulus of the deformed (molded) thin slab 6 is considerably larger than that of the flat slab 5. The roller spacing can be greatly expanded (for example, the axial spacing up to 2000 mm).
As a result, the lower surface of the thin slab is not shielded and is not subject to the strong cooling effect of the generally water-cooled furnace roller 2. The result is heating of both sides of the thin slab. This optimizes or shortens the required heating time and furnace length. The heat and cooling water required and the number of furnace rollers are minimized. Due to the low number of rollers, and at the same time the short effective roller support length in the high temperature furnace, it is possible to use furnace rollers which have already been demonstrated for several years, for example in walking beam furnaces. Furthermore, outer insulation of this furnace roller (outside the effective support area) is possible. As soon as the thin slab exits the furnace, the deformations are removed again by a suitable device, not shown. Thereby, subsequent winding or rolling is possible.
【００１５】図には更に、被加熱材料の下方および上方
に熱を供給するためのバーナー開口が８で示してある。
炉ローラ２のための駆動部と軸受部９は、炉の外側で車
輪１０によって炉横方向に移動可能である。The figure further shows at 8 burner openings for supplying heat below and above the material to be heated.
The drive and bearings 9 for the furnace roller 2 are movable laterally of the furnace by wheels 10 outside the furnace.
【００１６】[0016]
【発明の効果】以上説明したように本発明による金属被
加熱材料を加熱する方法および炉設備は、非常に少ない
数の炉ローラを備えた短い高温ローラハース炉を使用す
ることができ、熱消費および冷却水消費や設備コストが
少なくて済むという利点がある。As described above, the method and furnace equipment for heating a metal heated material according to the present invention can use a short high temperature roller hearth furnace equipped with a very small number of furnace rollers, thereby reducing heat consumption and heat consumption. There is an advantage that cooling water consumption and equipment cost can be reduced.
【図１】変形した薄いスラブを配置したローラハース炉
の垂直横断面図である。FIG. 1 is a vertical cross-sectional view of a roller hearth furnace in which a deformed thin slab is arranged.
【図２】変形したスラブを炉ローラ上に配置した状態を
示す斜視図である。FIG. 2 is a perspective view showing a state in which a deformed slab is arranged on a furnace roller.
【図３】変形の前および変形を除去した後の薄いスラブ
を示す図である。FIG. 3 shows a thin slab before and after deformation.
１ ローラハース炉 ２ 炉ローラ ３ 炉側壁 ６ 薄いスラブ（被加熱材料） ７ 薄いスラブの縁部範囲 1 Roller Hearth Furnace 2 Furnace Roller 3 Furnace Side Wall 6 Thin Slab (Material to be Heated) 7 Edge Range of Thin Slab
Claims (8)
加熱材料の搬送のために炉横向きに設けられた特に冷却
される炉ローラとを備えた高温ローラハース炉内で、金
属被加熱材料、特に薄いスラブ、薄板および鋼帯を加熱
する方法において、被加熱材料が断面係数を大きくする
ために、炉に入る前または炉に入るときに変形させら
れ、この変形が炉を通過する間維持されることを特徴と
する高温ローラハース炉内で金属被加熱材料を加熱する
方法。1. A metal heated material, in particular a metal heated material, in a high temperature roller hearth furnace equipped with an upper heating device and a lower heating device, and a furnace roller provided transversely of the furnace for conveying the material to be heated, in particular cooled. In a method of heating thin slabs, sheets and strips, the material to be heated is deformed before or at the time of entering the furnace in order to increase the section modulus and this deformation is maintained while passing through the furnace A method for heating a metal heated material in a high temperature roller hearth furnace, which comprises:
除かれることを特徴とする請求項１の方法。2. The method of claim 1, wherein the deformation is removed at or after exiting the furnace.
囲だけが炉内で炉ローラ上に載っていることを特徴とす
る請求項１の方法。3. The method of claim 1, wherein only the lateral edge areas of the deformed heated material rest on the furnace rollers in the furnace.
の反り部からなっていることを特徴とする請求項３の方
法。4. The method according to claim 3, wherein the deformed portion between the side mounting surfaces comprises a particularly upwardly curved portion.
軸方向に摺動させることによって調節可能であることを
特徴とする請求項３の方法。5. The method of claim 3 wherein the footprint is adjustable even during operation by axially sliding the furnace rollers.
たは支持カラーによってあるいは別個の案内ローラによ
って炉ローラ上を側方案内されることを特徴とする請求
項１から５までのいずれか一つの方法。6. The deformed material to be heated is laterally guided on the furnace roller in the furnace by a step or a supporting collar or by a separate guide roller. One way.
加熱材料の搬送のために炉横向きに設けられ炉縦方向に
間隔をおいて分配配置された特に冷却される炉ローラと
を備えた、特に請求項１から６までのいずれか一つの方
法を実施するための炉設備において、炉入口の手前また
は炉入口に、場合によっては更に炉出口の手前または炉
出口に、変形装置が設けられていることを特徴とする炉
設備。7. An upper heating device and a lower heating device, and a particularly cooled furnace roller provided in a horizontal direction of the furnace for distributing the material to be heated and distributed at intervals in the vertical direction of the furnace. In particular, in a furnace installation for carrying out the method according to any one of claims 1 to 6, a deformation device is provided in front of the furnace inlet or in front of the furnace inlet, and optionally in front of the furnace outlet or in front of the furnace outlet. A furnace facility characterized by being
るときに、炉ローラの間隔が１０００〜２０００ｍｍ、
特に１０００〜１５００ｍｍであることを特徴とする請
求項７の炉設備。8. When using a material to be heated having a thickness of 50 mm or less, the distance between the furnace rollers is 1000 to 2000 mm,
In particular, the furnace equipment according to claim 7, which is 1000 to 1500 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4203395:0 | 1992-02-06 | ||
| DE19924203395 DE4203395C2 (en) | 1992-02-06 | 1992-02-06 | Method for guiding thin slabs, sheets and steel strips to be heated in high-temperature roller hearth furnaces and high-temperature roller hearth furnace for carrying out the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0610034A true JPH0610034A (en) | 1994-01-18 |
Family
ID=6451081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1900293A Withdrawn JPH0610034A (en) | 1992-02-06 | 1993-02-05 | Method for heating metal in high-temperature roller hearth furnace, and furnace equipment for excecuting same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH0610034A (en) |
| DE (1) | DE4203395C2 (en) |
| FR (1) | FR2687769A1 (en) |
| GB (1) | GB2263875B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015110087A1 (en) * | 2015-06-23 | 2016-12-29 | Aixtron Se | Conveyor for a substrate |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR620432A (en) * | 1927-04-22 | |||
| DE601644C (en) * | 1932-11-29 | 1934-08-21 | Aeg | Method and device for treating sheet metal |
| US2141518A (en) * | 1937-01-02 | 1938-12-27 | Herbert M Cox | Art of annealing sheets |
| DE1143840B (en) * | 1956-02-08 | 1963-02-21 | Iaofuia Ofenbau Union G M B H | Roller hearth for a roller hearth furnace |
| GB1220408A (en) * | 1967-10-19 | 1971-01-27 | Fuji Photo Film Co Ltd | Photographic sheet material processing apparatus |
| DE3004805C2 (en) * | 1980-02-09 | 1981-12-10 | Sundwiger Eisenhütte Maschinenfabrik Grah & Co, 5870 Hemer | Method and device for replacing support rollers in roller hearth continuous annealing furnaces |
| FR2604992B1 (en) * | 1986-10-01 | 1988-12-02 | Saint Gobain Vitrage | BENDING AND TEMPERING OF GLASS PLATES RUNNING ON A CURVED BED OF CONFORMATION IN THE DIRECTION OF TRIPPING |
| DE3738755A1 (en) * | 1987-10-29 | 1989-06-01 | Didier Eng | METHOD AND SYSTEM FOR WARMING SLABS, BLOCKS, STICKS, SHEETS, STEEL TAPES AND THE LIKE HEAT MATERIAL |
| DE3740619C1 (en) * | 1987-12-01 | 1988-12-22 | Didier Eng | Heating furnace for a roughed-strip casting installation |
-
1992
- 1992-02-06 DE DE19924203395 patent/DE4203395C2/en not_active Expired - Fee Related
-
1993
- 1993-01-26 GB GB9301525A patent/GB2263875B/en not_active Expired - Fee Related
- 1993-02-02 FR FR9301089A patent/FR2687769A1/en not_active Withdrawn
- 1993-02-05 JP JP1900293A patent/JPH0610034A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2687769A1 (en) | 1993-08-27 |
| DE4203395A1 (en) | 1993-08-19 |
| DE4203395C2 (en) | 1993-11-25 |
| GB9301525D0 (en) | 1993-03-17 |
| GB2263875B (en) | 1995-04-19 |
| GB2263875A (en) | 1993-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000509 |