摘要
粉末冶金产业使用的混合粉都含有粒度与密度显著不同的成分,在运送时都有很强的偏析趋向。零件生产者要达到始终如一的精度与最佳性能,减少或消除这种偏析是至关重要的。用各种粘结剂处理预混合粉总体上可改善预混合粉的性能。用各种粘结剂/润滑剂系统进行了实验室研究,评估了涉及偏析、流动性与压制性能的结果。概述了在改善流动性、提高生坯密度与生坯强度方面的发展及其对综合生产率与性能的影响。
Powder mixes used in the PM industry contain ingredients of substantially different particle sizes and specific gravities that have a strong tendency to segregate during handling.Reducing or eliminating this segregation is essential for the part producer to achieve consistent precision and optimum performance.Treating the premixes with various types of binders improves the performance of the premix as a whole.A laboratory study was conducted with various binder/lubricant systems and results relating to segregation,flow and press performance are reviewed.Developments that provide improved flow rates combined with increased green densities and green strengths as well as their impact on overall productivity and performance are outlined.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2011年第6期468-473,共6页
Powder Metallurgy Technology
关键词
粘结剂
润滑剂
偏析
流动性
密度
强度
binder
lubricant
segregation
flow rate
density
strength
