Yangzhong liming diamond tool factory was created in middle 1980 ' s , now it has developed into a large scale processing and manufacturing enterprise with complete variety of glass , pottery and porcelain , magnetic materials and hard alloy 扬中市利民金刚石工具厂建于八十年代中期，迄今已发展成国内规模较大、品种较全的玻璃、陶瓷、磁性材料及硬质合金的加工制造企业。
Which is specially engaged in manufacturing , selling and researching on cemented carbide with an annual production capacity of 300 tons . the production system in this company comprises tungsten carbide powder , rtp powder , cemented carbide blank and its finishing product 浙江省恒成硬质合金有限公司是浙江省高新技术企业,专业从事硬质合金的生产销售及研发，年生产能力300吨，已形成碳化钨粉硬质合金及其深加工产品的生产体系。
Project profile : tungsten products here stated are products made from tungsten or tungsten alloys except cemented carbides and they are widely used in industrial branches of machine , electricity , aerospace , national defense , daily life and so on 项目内容：钨制品系指不包括硬质合金在内的其它以钨为主要成份的合金材料及其制成品，在机械制造、电气工程、航空航天、国防军工、日常生活中应用十分广泛，是次于硬质合金的又一类含钨结构材料。
Abstract : the newest mannfacturing , sintering technology on superfine and nanom eter hardmetal powder , manufacturing technology of cemented carbide , as well as re covery technique on tungsten materials and hardmetal wastes were comprehensively expounded in this paper and the reference proposals on hardmetal ' s developing trends , application prospects and environment problems were also put forward 文摘:综合评述了第八届国际钨讨论会关于硬质合金领域的超细、纳米级粉末制造技术、烧结技术、硬质合金制造技术以及钨材料和硬质合金废品的回收利用技术，并对硬质合金的发展趋势、前景应用等新动向及环境问题提出了参考性建议。
Nanchang cemented carbide plant is a large middle scale state enterprise to produce cemented carbides and tungsten products . the production lines of golden pagods brand microdrills are the advanced world level with advandced manufactured technology and complete sets of equipment from toshiba . we shall be glad to provide all kinds microdrills with high precision and excellent quality for the customers 南昌硬质合金厂是中国生产钨制品和硬质合金的大中型企业， "金塔牌"硬质合金微型钻头是从日本东芝引进的、具有先进水平的成套设备和技术以其先进的生产制造工艺可向用户提供高精度、高质量的各种硬质合金微型钻。
In this work , using elemental powders as starting reactant materials several carbide powders such as wc , sic , tic , zrc and corresponding alloys had been fabricated by ball - milling technique . x - ray diffraction ( xrd ) , scanning electron microscopy ( sem ) , transmission electron microscopy ( tem ) and other measurement techniques had been used to monitor the structural changes of powders after some ball milling time and the properties of the cemented tungsten carbides . and the mechanism for the formation of matal carbides by ma has also been discussed 本文主要对机械合金化( ma )技术在碳化物制备中的应用进行了研究，利用高能球磨，以元素粉末为原料，制备出wc 、 sic 、 tic 、 zrc的粉体以及wc基硬质复合材料，并利用x射线衍射、扫描电镜、透射电镜等方法分析和研究了球磨过程粉体的变化以及烧结后硬质合金的性能，对机械合金化制备碳化物的有关机理进行了研究和探索。
