Based on the analysis of structure and working principle of drum type flying shear, in the paper it is introduced the application and structural features of drum type flying shear in galvanizing line of Baotou Steel. It is expounded and summarized the different shear edge forms of cold rolling drum type flying shear, and combined with on-site practical experience, technical points in mechanics for flying shear maintenance are emphatically introduced. The experience has been well applied in galvanizing line of Baotou Steel, and maintenance time of flying shear is shortened; normal and steady operation of drum type flying shear is ensured; service life of flying shear of the roller is improved, having a great economic benefit and the method is practicable. It has played a certain reference for the maintenance work of such kind of flying shear.

blade gap  /  drum type flying shear  /  shear coincidence degree