Hot Sale Durable Expanding Mandrel or Molybdenum Mandrel

Molybdenum Mandrels Overview

1.Characteristic

The high temperature molybdenum mandrels have been developed by our company and the materials science & engineer Institute of Zhengzhou University. The R&D crafts include selecting and mixing raw materials which are compressed into embryos materials, sintering in the intermediate frequency furnace in 1850-1950°C and then turning and molding. The average density of the products is more than 9.7g/cm3. Compared with the common molybdenum mandrels, the density improves 2%-6%, the Vickers hardness reaches above 350kg/mm2 and the abrasion resistance increases 60%-80%.

2.Mainly used for piercing seamless tube, such as stainless steel tubes, alloy steel tubes, high-temperature alloy tubes.