Technical Measures Of Continuous Casting Of Large and Small Billets
Continuous casting, also known as strand casting, is a technology process to continuously cast a semi-continuous solid billet with a certain section, continuous length and specified setting at a certain speed. At present, this technology has been developed to two kinds of billet casting, one is large billet casting, and the other one is small billet casting.
The continuous casting technology of large and small billets has been widely used in metallurgical iron and steel, aerospace and other industry fields. This technology can effectively improve the continuity and efficiency of billet manufacturing process, and obtain smooth surface and better mechanical properties of the finished billet for the user, so as to realize industrial one-stop production. This article will focus on the technical measures of the continuous casting of large and small billets for the readers.
First of all, in order to ensure the quality of the cast billet, preliminary treatment before casting must be strictly conducted.Secondly, the casting process should also pay more attention to the maintenance of the casting system and operators, also need to insure the accuracy of installation and status of casting system.Averagely, it is necessary to test the thickness of the cast buillet several times. In the process of casting, pre set the temperature and uniformity of liquid steel distribution in the mold.At the same time,prevent the possibility of various defects such as unfilled pores, folds, slag sealing and premature solidification.
Thirdly, it is necessary to consider the choice of casting speed and rolling speed. According to the actual situation, we should understand the distribution characteristics of the solidification process after the liquid steel is cast, and select the rational casting speed and rolling speed.Finally, the existence of certain defects can not be avoided during the continued casting process. Therefore, corresponding measures should be taken in time to eliminate them, such as selection of reasonable slag quantity, improve the sand-filling quality in the mould, replace the old billet formation rolls, strengthen the maintenance of the mould wall and ensure that the mould is in good working condition.
To sum up, the cast quality of the large and small billet is closely related to the pre-casting preparation, casting process, casting speed and rolling speed, and other aspects. It is important to fully understand the specific requirements of the technology and the specifics of the production process in order to produce high-quality cast billets. Taking the above-mentioned technical measures can definitely help to achieve high-speed continuous casting of large and small billets.
关于大方坯和小方坯高速连铸的技术措施
连铸也称为丝熔铸，是一种技术工艺，以一定速度连续铸造出具有一定截面、连续长度和指定设定的半连续固体坯体。目前，这项技术已经发展成两种坯体铸造，一种是大坯铸造，另一种是小坯铸造。
大小方坯连铸技术已经广泛应用于冶金钢铁、航天等行业领域。该技术能有效提高坯体制造工艺的连续性和效率，并且可以为用户获得整洁的表面和较好的机械性能的成品坯体，从而实现工业一体化生产。本文将为读者阐述大小方坯高速连铸的技术措施。
首先，为了确保铸件性能，在铸造前必须进行严格的初步处理。其次，在铸造过程中，还要重视铸造系统及操作工的养护,也需要保证安装的精度和铸造系统的状态。平均来说，要反复检测测量铸件厚度。在铸造过程中，预先设置模具内液态钢的温度和分布均匀性。同时，预防未充填空洞、褶皱、熔渣封闭和过早凝固等各种缺陷出现的可能性。
第三，需要考虑铸造速度和轧制速度的选择。根据实际情况，应当了解液态钢铸入后的凝固过程的分布特性，以及选择合理的铸造速度和轧制速度。最后，连续铸造过程中有某些缺陷是无法避免的。因此，应及时采取相应措施，消除这些缺陷，如合理选择熔渣用量，提高模具内的填充质量，更换旧的坯体形成辊，加强模壁的养护，保证模具处于良好的工作状态。
综上所述，大小方坯的铸件质量与铸造前的准备工作、铸造过程、铸造速度和轧制速度等诸多方面密切相关。把握技术的具体要求和生产过程的特征，以便生产高质铸件是非常重要的。采取上述技术措施，一定能够有效地实现大小方坯高速连铸。
