Molybdenum crucible large in length-diameter ratio and spinning method thereof

The invention provides a molybdenum crucible large in length-diameter ratio and a spinning method thereof. Firstly, according to design requirements, a molybdenum plate of a proper size is cut out, and the cut molybdenum plate is mounted on a spinning mold and heated; secondly, the heated molybdenum plate is subjected to common spinning, and a preliminary spinning part is obtained; thirdly, the obtained preliminary spinning part is subjected to strong spinning, a semi-finished molybdenum crucible is obtained, the obtained semi-finished molybdenum crucible is shaped and cleaned, and the finished molybdenum crucible large in length-diameter ratio is obtained. According to the molybdenum crucible large in length-diameter ratio and the spinning method thereof, the molybdenum plate deforms through common spinning at the earlier stage, and then by means of multiple times of strong spinning small in pressing amount, the side wall of the preliminary spinning part formed through common spinningis thinned and stretched