Abstract: Deep learning is the key to improve teaching quality and future talent training, and deep teaching is the development direction of deep learning. The concept of in-depth teaching and learning is one in which learners use critical and creative thinking to organically integrate old and new knowledge to solve complex problems and ultimately internalize knowledge. The course Principles of High Temperature Processing is highly theoretical, abstract in content, weak in students' classroom interaction initiative and unsatisfactory in learning effect, which affects the learning and understanding of subsequent professional courses. In view of the problems existing in the above teaching process, based on the analysis of the progress of in-depth teaching research, this research adopts the hybrid teaching mode of combining online and offline, reconstructs the Principles of High Temperature Machining Process classroom based on the concept of in-depth teaching, constructs a new mode of in-depth teaching, constantly improves the core quality of students' essential character and key ability to adapt to the needs of lifelong development and social development, and finally realizes talent training the win-win situation of teachers' growth and discipline construction.

Key words: Deep teaching, Teaching reform, Online and offline integration, Mining and metallurgy, High temperature processing principle, Personnel training