从金属学角度来看，热轧与冷轧的界限应该以金属再结晶的温度来区分，即低于再结晶温度的轧制为冷轧；高于再结晶温度的轧制为热轧。而钢的再结晶温度一般在450℃～600℃范围之内。
From the point of view of metallization, the boundary between hot rolling and cold rolling should be distinguished from the temperature of recrystallization of metal, that is, the rolling that is lower than the recrystallization temperature is cold rolling, and the rolling that is higher than the recrystallization temperature is hot rolling. The recrystallization temperature of steel is generally within the range of 450 ~ 600.
选择一批具有行业轧钢机设备技术制高点，能带动轧钢机设备行业和技术提高的建设项目作为行业技术示范项目，***力量研制核心技术和关键软件，实现轧钢机设备自动化和计算机控制系统的国产化。
A batch of c***truction projects which h***e the technical height of the industry rolling mill equipment and the c***truction projects that can improve the equipment industry and technology of the rolling mill are selected as the dem***tration project of the industry technology, and the core technology and key software are developed to realize the localization of the automation of the rolling mill equipment and the computer system.
轧钢机的成长都是在品质有所保证的前提下所进行的，因为品质是轧钢机生存在市场中的旗帜，只有拥有良好的品质才能让自身的旗帜在市场中高高的飘荡。
The growth of the rolling mill is carried out under the premise of quality assurance, because the quality is the banner of the steel rolling machine in the market. Only with good quality can its flag float high in the market.