摘要
X射线管转轴的高性能钼棒制备是钼材加工中的一个难点，研究选用适宜的钼粉，制定合理烧结工艺，采用特殊的锻造工艺，生产出性能指标达到美国ASTM387-90标准的钼棒。结果表明：采用平均粒度2.2μm，松装密度1.14 g/cm3的钼粉压制后在氢气感应炉中1920℃烧结3 h后，再采用加热1200～1400℃，道次加工率24%～2%，总加工率74%，5次模锻的锻造工艺能获得密度为10.2 g/cm3的钼棒，再经900℃保温半小时的消应力退火，可以得到抗拉强度大于620 MPa，延伸率大于30%，组织结构均匀的高性能钼棒。
Preparation of high-performance X-ray tube molybdenum rod shaft is one of the difficult points of molybdenum processing. Molybdenum rod shaft, whose performance properties conform to US standards ASTM387-90, is produced by sintering and forging processes. Molybdenum powder（average particle size=2.2μm, bulk density=1.14 g/cm3 ） is sintered at 1 920℃for 3 hours in Hydrogen induction furnace. Molybdenum rod （density=10.2 g/cm3） is obtained upon 1200～1400℃heating and 5 times of forging （pass processing rate=24%～2%, total processing rate=74%）. High performance molybdenum rod with uniform organizational structure （tensile strength greater than 620MPa, elongation more than 30%） is produced upon Eliminate stress annealing at 900℃for 30 mins.
出处
《中国钨业》
CAS
2014年第6期50-52,共3页
China Tungsten Industry
关键词
钼粉
钼棒烧结
锻造
力学性能
抗拉强度
延伸率
molybdenum powder
molybdenum rod
sintering
forging
mechanical properties
tensile strength
elongation
