Production of grey cast iron powder via target jet milling

被引：25

作者：

Ghambari, Mohammad ^{[1
]}

Shaibani, Mahdokht Emadi ^{[1
]}

Eshraghi, Nicolas ^{[1
]}

机构：

[1] Univ Tehran, Univ Coll Eng, Sch Met & Mat Eng, Tehran, Iran

来源：

POWDER TECHNOLOGY | 2012年 / 221卷

关键词：

Target jet milling; Cast iron scrap; Feed rate; Impact angle; Graphite flakes; HIGH-VELOCITY IMPACT;

D O I：

10.1016/j.powtec.2012.01.020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Target jet milling was used for the first time to convert cast iron scraps to powder. An experimental apparatus was designed which comprised a compressor, a mixing section, a nozzle, an impact chamber and two suction machines. Milling parameters i.e. the target to nozzle distance, the feed rate and the impact angle were optimized through appropriate tests. The travel distance of 8 cm and the impact angle of 90 degrees were found to be ideal parameters of milling. The effect of feed rate on production of powders greater than 45 mu m was found to be opposite to the production of the fines (<45 mu m). Investigation of the fragmentation procedure of particles revealed that, the existence of graphite flakes in cast iron matrix plays the most important role in particle breakage. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：318 / 324

页数：7