配碳方式对超细WC粉末性能的影响  

The Effect of Carbon Addition Methods on the Properties of Ultrafine WC Powders

作　　者：钟毓斌 高皇龙 甘信峰 ZHONG Yubin;GAO Huanglong;GAN Xinfeng(Nanchang Cemented Carbide Liability Company,Nanchang Jiangxi 330013,China)

机构地区：[1]南昌硬质合金有限责任公司,江西南昌330013

出　　处：《江西化工》2024年第4期78-81,共4页Jiangxi Chemical Industry

摘　　要：为了改善超细WC粉末的性能,尤其是降低其压制压力,本文研究了配碳方式对超细WC粉末性能的影响。结果表明:碳黑类型、配碳器类型、配碳时间和晶粒长大抑制剂碳化铬的添加次序对WC粉末性能有显著影响;碳黑类型影响WC的总碳和氧含量,对粉末的压制压力没有明显影响;配碳器类型对WC总碳和氧含量没有明显影响,与卧式配碳器比较,立式配碳器制备的WC粒度较小,压制压力更大;配碳时间对总碳、氧含量、粒度都没有明显的影响,配碳时间过长会提高压制压力;碳化铬添加次序对总碳没有明显的影响,添加碳化铬会增加WC的氧含量,降低WC粉末的粒度,增加压制压力。In order to improve the properties of ultrafine WC powders,particularly to reduce their pressing pressure,this paper investigates the effect of the carbon addition methods on the properties of ultrafine WC powders.The results show that,the type of carbon,the type of carbon dispenser,the carbon dispensing time,and the addition sequence of the grain growth inhibitor chromium carbide all have significant effects on the properties of WC powders.The type of carbon affects the total carbon and oxygen content of WC,but has no significant effect on the pressing pressure of the powders;the type of carbon dispenser has no significant effect on the total carbon and oxygen content of WC,but compared with the horizontal carbon dispenser,the particle size of the WC prepared by the vertical carbon dispenser is smaller and the pressing pressure is larger;the time of carbon dispensing has no significant effect on the total carbon,oxygen content,and particle size,but a longer time of carbon dispensing will increase the pressing pressure;the order of chromium carbide addition has no significant effect on the total carbon,and the order of carbon addition before chromium carbide addition has no significant effect on the total carbon,but the order of carbon addition has a significant effect on the total carbon.There is no obvious effect on the total carbon,but adding chromium carbide before will increase the oxygen content of WC,reduce the particle size of WC powders,and increase the pressing pressure.

关 键 词：超细碳化钨粉 硬质合金 粒度 配碳方式 压制压力 

分 类 号：TG135.5[一般工业技术—材料科学与工程]