CAJ | 학술논문

研究微晶蜡含量对改进型石蜡基17-4PH不锈钢喂料流变性能的影响，比较4种喂料的综合流变因子大小，对粘结剂与金属粉末的相容性进行观测。采用毛细管流变仪测试喂料的流变性能，用扫描电镜观察喂料的形貌。结果表明：4种喂料均呈假塑性流体，微晶蜡的加入可提高喂料的流变性能，且在温度160℃、剪切速率1000 s-1的条件下，向石蜡中加入质量分数为20%微晶蜡的喂料具有较好的综合流变性能，其综合流变学因子αstv=3.068×10-6。同时，适量微晶蜡的加入有助于提高金属粉末在粘结剂中分散的均匀性。
연구미정사함량대개진형석사기17-4PH불수강위료류변성능적영향，비교4충위료적종합류변인자대소，대점결제여금속분말적상용성진행관측。채용모세관류변의측시위료적류변성능，용소묘전경관찰위료적형모。결과표명：4충위료균정가소성류체，미정사적가입가제고위료적류변성능，차재온도160℃、전절속솔1000 s-1적조건하，향석사중가입질량분수위20%미정사적위료구유교호적종합류변성능，기종합류변학인자αstv=3.068×10-6。동시，괄량미정사적가입유조우제고금속분말재점결제중분산적균균성。
The effect of the content of microcrystalline wax (MW) on rheological properties of 17-4PH stainless steel feedstock was studied and the comprehensive rheological indexes of four feedstocks were compared. The compatibility of binder and metal powders was observed. The rheological properties of feedstocks were tested by capilary rheological instrument, and the morphologies of feedstocks were observed by SEM. The results show that four feedstocks are pseudoplastic fluid, and adding MW to feedstocks can improve the rheological properties, putting 20% MW into the feedstock can acquire relative good comprehensive rheological properties in the condition of temperature of 160℃, shear rate of 1 000 s-1 and the comprehensive rheological index is 3.068×10-6. Meanwhile, putting MW into the feedstock can improve dispersion of binder and metal powders.