附錄 3 附錄3美國(guó)5829117 號(hào)專利熱鋸機(jī)鋸切式連續(xù)軋制方法及它的裝置美國(guó)專利局發(fā)布于1998 年11 月3 日有效期至2017 年1 月30 日摘要一種熱鋸鋸切與連續(xù)軋制方法使得可以連續(xù)同時(shí)鑄造兩根鋼坯，能用熱鋸機(jī)將鋼坯切成預(yù)定的長(zhǎng)度，能通過(guò)一連接裝置直接提供由軋制線生產(chǎn)的鋼坯，能用以閃光對(duì)焊機(jī)不斷地將鋼坯焊接成一連續(xù)的鋼坯，能用磨床將鋼坯焊縫處的毛刺去除，用感應(yīng)加熱器將鋼坯加熱到一更高溫度后可以通過(guò)一軋機(jī)群連續(xù)軋制鋼坯。一種熱鋸鋸切與連續(xù)軋制的裝置可以提供以上所描述的加工方法。專利權(quán)項(xiàng)專利權(quán)項(xiàng)有：1、一種熱鋸鋸切與連續(xù)軋制方法由以下幾步構(gòu)成：連續(xù)同時(shí)鑄造連根鋼坯；用熱鋸機(jī)將鋼坯切成預(yù)定長(zhǎng)度；通過(guò)一連接裝置提供由軋制線生產(chǎn)的鋼坯；用以閃光對(duì)焊機(jī)不斷地將鋼坯焊成一連續(xù)的鋼坯；用磨床將鋼坯焊縫處的毛刺去除；用感應(yīng)加熱器將鋼坯加熱到更高溫度并通過(guò)一軋機(jī)群連續(xù)軋制鋼坯。2、一種熱鋸鋸切與連續(xù)軋制裝置構(gòu)成如下：一能同時(shí)鑄造兩根鋼坯的鑄造機(jī)器；一安裝在鑄造線上的移動(dòng)熱鋸機(jī)；一連接裝置，安裝在鑄造線與軋制線直接，能交 切 處 得的鋼坯 ；一移動(dòng)式閃光對(duì)焊機(jī)，安裝在連接裝置的 ，能將鋼坯 不斷的附錄 3 焊成一連續(xù)的鋼坯；一移動(dòng)式磨床，安裝在移動(dòng)式閃光對(duì)焊機(jī)的 ，能去除鋼坯焊縫處的毛刺；一感應(yīng)加熱器，安裝在移動(dòng)式磨床的 ，能將連續(xù)的鋼坯加熱到一更高溫度；一軋機(jī)群 ，用于軋制 加熱到上述更高溫度的鋼坯。3、權(quán)項(xiàng)2 的連接裝置構(gòu)成如下：一 式 機(jī)，安裝在軋機(jī)線的一 ，將鑄造線提供的鋼坯 到軋制線；一 式 機(jī)，安裝在軋制線的 一 ，將 一 鑄造線的鋼坯 到軋制線。、一種熱鋸鋸切與連續(xù)軋制裝置構(gòu)成如下：一能同時(shí)鑄造兩根鋼坯的鑄造機(jī)器；一安裝在鑄造線上的移動(dòng)熱鋸機(jī)；一連接裝置，安裝在鑄造線與軋制線 ，能通過(guò) 動(dòng)到預(yù)定 度交切 處 得的鋼坯 ；一移動(dòng)式閃光對(duì)焊機(jī)，安裝在連接裝置的 ，能將鋼坯 不斷地焊成一連續(xù)的鋼坯；一移動(dòng)式磨床，安裝在移動(dòng)式閃光對(duì)焊機(jī)的 ，能去除鋼坯焊縫處的毛刺；一感應(yīng)加熱器，安裝在移動(dòng)式磨床的 ，能將連續(xù)的鋼坯加熱到一更高溫度；一軋機(jī)群 ，用于軋制 加熱到上述更高溫度的鋼坯。5、權(quán)項(xiàng) 的連接裝置構(gòu)成如下：一能 動(dòng)到一預(yù)定 度的 ，可以將鋼坯 由一 到一 的 線上。述附錄 3 發(fā) 的 1、發(fā) 的 發(fā) 于一種連續(xù)的軋制方法，軋制的鋼坯由一連續(xù)的鑄造機(jī)提供。要的，發(fā) 于一種連續(xù)的軋制方法currency1裝置。在種裝置，可以直接提供兩根鋼坯并由熱鋸機(jī)鋸切。鋸切的鋼坯用閃光對(duì)焊機(jī)焊接在一“，并磨去毛刺。 后生成的鋼坯 感應(yīng)加熱到更高溫度后軋制。2、fi及的fl 鋼坯連軋法一種有效的能軋制方法。它可以生產(chǎn) 、鋼currency1鋼。如，日 的專利 ”52 375 號(hào)提 的鋼坯連軋法 ，鋼坯由一連續(xù)鑄造機(jī)提供，后鋼坯 熱鋸機(jī)切成預(yù)定長(zhǎng)度，切斷后 時(shí) 鋼坯 加熱加熱，后 加熱的鋼坯 用閃光對(duì)焊機(jī)焊接在一“，毛刺 鋼坯器上的成去除。 后連續(xù)的鋼坯 感應(yīng)加熱器加熱到軋制所的溫度 使得加熱的連續(xù)的鋼坯由軋機(jī)群 軋制。在種 的連軋法 ，鋼坯 由溫20加熱到1000，以 到軋制所的 溫度1020。 加 加熱的成。 ，連續(xù)鑄造能 currency1連續(xù)軋制能 的不同 鋼坯鑄造線currency1軋制線的直接連接。 不可 的 使用 的 并 用 的 。更要的，成 用去除鋼坯閃光對(duì)焊 的毛刺。 使得鋼坯 焊接 后成的 不能連續(xù)的工 。 使得在 以 成去除毛刺的工 。項(xiàng)發(fā) 的摘要項(xiàng)發(fā) 的的 上述的并提供一種連續(xù)軋制的方法currency1它的裝置。 使得一步能currency1 并 得更高的效 成 可能。項(xiàng)發(fā) 的熱鋸連軋法由以下幾步構(gòu)成：連續(xù)地鑄造兩根鋼坯；用熱鋸機(jī)將鋼坯鋸成預(yù)定長(zhǎng)度；通過(guò)連接裝置將鋸切的鋼坯直接 到軋制線；用閃光對(duì)焊機(jī)連續(xù)地焊接鋼坯 ；用磨床磨去除焊接鋼坯的毛刺；用感應(yīng)加熱器將連續(xù)的鋼坯加熱到更高溫度；通過(guò)軋機(jī)群 連續(xù)地軋制鋼坯。，熱鋸連軋裝置包括：一能連續(xù)同時(shí)鑄造兩根鋼坯的鑄造機(jī)；安附錄 3 裝在各自鑄造線上的移動(dòng)式熱鋸機(jī)；安裝在鑄造線與軋制線 的連接裝置，它能交 鋸切處的鋼坯；安裝在 裝置 的移動(dòng)式閃光對(duì)焊機(jī)，它能將鋼坯 不斷地焊成連續(xù)的鋼坯；安裝在移動(dòng)式閃光對(duì)焊機(jī) 的移動(dòng)式磨床，它能去除連續(xù)鋼坯焊縫處的毛刺；安裝在移動(dòng)式磨床 處的感應(yīng)加熱器，它能將連續(xù)的鋼坯加熱到一更高溫度；一軋機(jī)群 ，它能軋制 加熱到上述更高溫度的連續(xù)鋼坯。次，熱鋸連軋裝置包括：一能連續(xù)同時(shí)鑄造兩根鋼坯的鑄造機(jī)；安裝在各自鑄造線上的移動(dòng)式熱鋸機(jī)；安裝在鑄造線與軋制線 的連接裝置，它能 到預(yù)定 度 可交 鋸切的鋼坯；安裝在 裝置 的移動(dòng)式閃光對(duì)焊機(jī)，它能將鋼坯 不斷地焊成連續(xù)的鋼坯；安裝在移動(dòng)式閃光對(duì)焊機(jī) 的移動(dòng)式磨床，它能去除連續(xù)鋼坯焊縫處的毛刺；安裝在移動(dòng)式磨床 處的感應(yīng)加熱器，它能將連續(xù)的鋼坯加熱到一更高溫度；一軋機(jī)群 ，它能軋制 加熱到上述更高溫度的連續(xù)鋼坯。通過(guò)發(fā) ，鋼坯鑄造線currency1軋制線 一連接裝置 歇的連接在一“，消除 使用加熱的要。加熱在 方法 見(jiàn)。 使得加熱得到有效利用。 感應(yīng)加熱器只將鋼坯 100加熱到920以及在鑄造機(jī)輸 端將鋼坯加熱到軋制溫度1020, 加熱成得到 幅度的減少。 連鑄線只有一 時(shí) 平衡連鑄能 currency1連軋能 ， 將連鑄線數(shù)提高到兩根。將兩 連鑄線currency1一 連軋線通過(guò)一 裝置連接在一“時(shí)一種有效地方式，它平衡 連鑄能 currency1連軋能 。 ，連鑄線有3根或更 時(shí)，一干擾鑄造線上的熱鋸機(jī)的熱鋸機(jī) 不能放置 。， 熱鋸機(jī)的使用，使得切斷面平整有則， 減少 閃光對(duì)焊機(jī)的焊接時(shí) 。磨床 用去除焊縫處的毛刺， 使得 長(zhǎng)，即使形成的一步驟在焊接 也能 成去除毛刺的工 。上所述，鋼坯鑄造線currency1軋制線由一連接裝置 歇的連接在一“， 加熱的使用，有效的 能currency1降低 加熱成。 ，由于兩 鑄造線的使用，連接裝置得以有效平衡 連鑄能 currency1連軋能 。附錄 3 使得與 相比 。再次，由于減少 閃光對(duì)焊的時(shí) ， 延長(zhǎng) 磨床的 ，滿足 連軋的要求。US Patent 5829117 - Hot saw cutting typecontinuous rolling method and apparatus thereofUS Patent Issued on November 3, 1998Estimated Patent Expiration Date: January 30, 2017AbstractA hot saw cutting type continuous rolling method comprises casting two strand billets continuously； cutting the billets to predetermined length by hot saws； directly feeding billet portions obtained by cutting onto a rolling line via a line connecting device； continuously welding and joining the billets portions by a flash butt welder to form a continuous billet； grinding and removing burrs at the welded portion of the continuous billet by a grinding machine； and continuously rolling the billet by a rolling mill group, after heating the continuous billet to a higher temperature by an induction heater. A hot saw cutting type continuous rolling apparatus is provided for performing the above-described method.ClaimsWhat is claimed is:1. A hot saw cutting type continuous rolling method comprising the steps of: casting two strand billets continously； cutting the billets to predetermined length by hot saws； directly feeding billet portions obtained by cutting to a billet rolling line through means of a line connecting device； continously welding and joining the billets portions by a flash butt welder to form a continuous billet； grinding and removing burrs at the welded billet portion by a grinding machine； heating the continuous billet to a higher temperature by an induction heater； and continuously rolling the billet by a rolling mill group.2. A hot saw cutting type continuous rolling apparatus comprising: a continuous casting machine for casting two strand billets； traveling-type hot saws disposed on their respective casting lines； a line connecting device including means for alternately performing transverse feeding of billet portions obtained by cutting, disposed between the casting lines and a rolling line； a 附錄 3 traveling-type flash butt welder for continuously welding and joining the billet portions to form a continuous billet, disposed at a downstream side of the line connecting device； a traveling-type grinding machine for removing burrs at the welded portion of the continuous billet, disposed at a downstream side of the traveling-type flash butt welder； an induction heater for heating the continuous billet to a higher temperature, disposed at a downstream side of the traveling-type grinding machine； and a rolling mill group for rolling the continuous billet which was heated to said higher temperature.3. The apparatus of claim 2, wherein the line connecting device comprises:a first chain conveyor disposed at one side of the rolling line, transversely feeding the billet on one casting line onto the rolling line； and a second chain conveyor disposed at another side of the rolling line, transversely feeding the billet on another casting line onto the rolling line.4. A hot saw cutting type continuous rolling apparatus comprising:a continuous casting machine for casting two strand billets； traveling-type hot saws disposed on their respective casting lines； a line connecting device including means which rotates by a predetermined angle for alternately performing transverse feeding of billet portions obtained by cutting, disposed between the casting lines and a rolling line； a traveling-type flash butt welder for continuously welding and joining the billet portions to form a continuous billet, disposed at a downstream side of the line connecting device； a traveling-type grinding machine for removing burrs at the welded portion of the continuous billet, disposed at a downstream side of the traveling-type flash butt welder； an induction heater for heating the continuous billet to a higher temperature, disposed at a downstream side of the traveling-type grinding machine； anda rolling mill group for rolling the continuous billet which was heated to said higher temperature.5. The apparatus of claim 4, wherein the line connecting device comprises:a turntable which reciprocately rotates by a predetermined angle； and means for transversely pushing the billet portion on the turntable onto a centerline of rotation of the turntable.DescriptionBACKGROUND OF THE INVENTION1. Field of the InventionThe present invention relates to a continuous rolling method of a billet directly fed from a continuous casting machine, and, more particularly, to a continuous rolling method and apparatus in which after two billet strands have been directly fed and cut by a hot saw, the billet portions obtained by cutting are welded together by flash butt welding, followed by burr grinding, after which the resulting billet is heated to a higher temperature by induction heating to roll the billet.2. Description of the Related ArtThe billet continuous rolling method is known as an energy-saving rolling method for efficiently producing a wire rod, steel bar, or shaped steel. For example, in the billet continuous rolling method disclosed in Japanese Unexamined Patent Publication No. 52-43754, a billet, directly fed from a continuous casting machine, is cut into a predetermined length by a hot saw, followed by temporary cooling of the billet portions obtained by cutting to reheat the cooled billet portions in a heating furnace. Then, the reheated billet portions are welded together by a flash butt welder, after which the burr on welded portion is peeled off by a forming tool disposed on a scarfer. Thereafter, the continuous billet is heated to the required temperature for rolling by an induction heater to roll the heated continuous billet by a group of rolling mill.However, in such a conventional continuous rolling method, the billet must be heated by about 1000 C., from room temperature of 20 C. to a final rolling required temperature of 1020 C, thereby considerably increasing heating costs. In addition, a difference between the continuous casting capacity and the rolling capacity prevents direct connection of a billet casting line and a billet rolling 附錄 3 line,which inevitably results in huge facilities and makes it necessary to use a large space. Further, a forming tool is used for removing burrs from the billet flash butt welded portion, so that the forming tool has a short tool life and continuous operation cannot be performed, when a step is formed at the billet welded portion, since it is difficult to perform burr removal in such a case.SUMMARY OF THE INVENTIONThe present invention aims to solve the above-described problem and to provide continous rolling method and apparatus thereof to make it possible to further save energy and space, and achieve higher efficiency.A hot saw cutting type continuous rolling method of the present invention comprises the steps of casting two strand billets continously； cutting the billets to predetermined length by a hot saw； directly feeding billet portions obtained by cutting to a billet rolling line through means of a line connecting device； continously welding and joining the billets portions by a flash butt welder； grinding and removing burrs at the welded billet portion by a grinding machine； heating the continuous billet to a higher temperature by an induction heater； and continuously rolling the billet by a rolling mill group.Firstly, a hot saw cutting type continuous rolling apparatus comprises: a continuous casting machine for casting two strand billets； traveling-type hot saws disposed on their respective casting lines； a line connecting device including means for alternately performing transverse feeding of the billet portions obtained by cutting, disposed between the casting lines and a rolling line； a traveling-type flash butt welder for continously welding and joining the billet portions to form a continuous billet, disposed at a downstream side of the line connecting device； a traveling-type grinding machine for removing burrs at the welded portion of the continous billet, disposed at a downstream side of the traveling-type flash butt welder； an induction heater for heating the continous billet to higher temperature, disposed at a downstream side of the traveling-type grinding machine； and a rolling mill group for rolling the continous billet which was heated to said higher temperature.Secondly, a hot saw cutting type continuous rolling apparatus comprises: a continuous casting machine for casting two strand billets； traveling-type hot saws disposed on their respective casting lines； a line connecting device including means which rotates by a predetermined angle for alternately performing transverse feeding of billet portions by cutting, disposed between the casting lines and a rolling line； a traveling-type flash butt welder for continously welding and joining the billet portions to form a continuous billet, disposed at a downstream side of the line connecting device； a traveling-type grinding machine for removing burrs at the welded portion of the continous billet, disposed at a downstream side of the traveling-type flash butt welder； an induction heater for heating the continous billet to a higher temperature, disposed at a downstream side of the traveling-type grinding machine； and a rolling mill group for rolling the continous billet which was heated to said higher temperature.According to the present invention, a billet casting line and a rolling line are intermittently connected together by a line connecting device, thereby eliminating the need for a heating furnace, as has been conventionally the case, and allowing effective use of the heat of the billets. Therefore, heating costs are greatly reduced, since the induction heater needs to heat the billets by only about 100 C. from about 920 C. at the output side of the continuous casting machine to about 1020 C. rolling temperature.Two billet strands are subjected to continuous casting, since when only one strand is subjected to continuous casting, it becomes difficult to balance the continuous casting capacity and the continuous rolling capacity. The continuous casting capacity and the continuous rolling capacity are balanced in an efficient manner by c