關(guān)于機(jī)械產(chǎn)量，二十世紀(jì)七十年代后期，控制冷卻技術(shù)的發(fā)展使得鋼板軋制中的TMCP技術(shù)得到廣泛發(fā)展。

With regard to mechanical production, the development of cooling technology in the late 1970s made the TMCP technology develop widely in steel plate rolling.

開(kāi)坯機(jī)為兩輥水平軋機(jī)，坯料送至軋機(jī)前后，根據(jù)軋制程序表進(jìn)入相應(yīng)的軋槽可逆軋制，并通過(guò)翻鋼裝置將軋件夾緊進(jìn)行翻轉(zhuǎn)。一般軋制5-7道次(多9道次)。

The blooming machine is a two roll horizontal mill, and the billet is sent to the front and rear mills. According to the rolling schedule, the roll is rolled into the corresponding rolling groove, and the workpiece is clamped and turned through the turning device. The general rolling is 5-7 times (up to 9 times).

閉口式機(jī)架為一整體鑄件制成。在經(jīng)過(guò)改進(jìn)之后，目前的軋機(jī)設(shè)備采用的是被動(dòng)一軋一拖式生產(chǎn)方式，可以實(shí)現(xiàn)兩道軋制成型，不僅解決了速度配合問(wèn)題，而且改變了傳統(tǒng)的四道軋制方式，生產(chǎn)效率明顯提高。這種機(jī)架形式在型鋼車間中小型軋機(jī)上應(yīng)用較多。其優(yōu)點(diǎn)是強(qiáng)度和剛度較高，輥跳值較小，產(chǎn)品精度較高。其主要缺點(diǎn)是制造比較困難，裝卸、換輥不方便。軋制壓力較大、對(duì)軋件尺寸要求比較嚴(yán)格時(shí)常采用閉口式機(jī)架。如初軋機(jī)、型鋼連軋機(jī)和型鋼成品軋機(jī)等。

The closed frame is made of a whole castings. This type of frame is used more in the small and medium mill in the steel workshop. Its advantages are that the strength and stiffness are high, the roll jump value is small and the precision of the product is high. Its main disadvantage is that it is difficult to manufacture, and it is inconvenient to load and load and change the roll. When the rolling pressure is larger and the requirements for the size of the rolled piece are strict, the closed frame is often used. Such as the early rolling mill, the type steel continuous rolling mill and the steel finished rolling mill, etc.

使用熱軋的第二個(gè)優(yōu)點(diǎn)就在于其可以適當(dāng)?shù)母纳平饘僖约昂辖鸩牧系募庸すに囆阅堋Ｒ簿褪钦f(shuō)，其可以把較大的晶粒進(jìn)行破碎，同時(shí)可以減少裂紋的出現(xiàn)，這樣一來(lái)，也就相當(dāng)于減少了鑄造過(guò)程中的缺陷問(wèn)題，提高合金的加工性能。

The second advantage of hot rolling is that it can appropriately improve the processing performance of metal and alloy materials. That is to say, it can break the larger grain and reduce the appearance of the crack, which is equivalent to reducing the defects in the casting process and improving the processing performance of the alloy.