1results about How to "No surface defects" patented technology

The present invention discloses a preparation method for improving the thickness uniformity of molybdenum thin plates, belonging to the technical field of molybdenum thin plate preparation methods. The preparation method includes: setting two rollers with the same crown and both satisfying 1 / 15000 < tanθ < 1 / 9000 as the upper and lower rollers of a cold rolling mill, where tanθ represents the ratio of the difference d between the diameter at the center of the roll body and the diameter at the edge of the roll body to half of the roll length L / 2; adjusting the bending force and rotational speed of the cold rolling mill until its pressure gauge reaches 6 - 8 MPa, and rolling the cold-rolled semi-finished molybdenum plate through the adjusted cold rolling mill to obtain the finished molybdenum thin plate. The present invention can improve the thickness uniformity of molybdenum thin plates and reduce their surface defects under the condition of not changing the rolling process by coordinately adjusting the bending force of the rolling mill and the crown of the rollers, so as to meet the high-end application requirements.