Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tungsten carbide-silicon nitride ceramic composite end mill and preparation method thereof
The invention relates to a tungsten carbide-silicon nitride ceramic composite end mill and a preparation method thereof. Comprising the following steps: preparing silicon nitride-based powder, tungsten carbide-based powder and transition layer powder; a mold with the upper diameter being large, the lower diameter being small and the middle diameter being gradually transited is adopted, the tungsten carbide material, the transition layer material and the silicon nitride ceramic powder are sequentially filled into the mold from top to bottom, and pre-pressing is conducted; the sintering mechanism is put into a plasma sintering furnace for sintering at the heating rate of 50-100 DEG C/min, the sintering temperature is 1250-1650 DEG C, the sintering pressure is 50-70 MPa, the heat preservation time is 6 min, then furnace cooling is conducted, and the tungsten carbide/silicon nitride composite bar is prepared; and processing the tungsten carbide/silicon nitride composite bar to obtain the tungsten carbide/silicon nitride ceramic composite end mill. The end mill disclosed by the invention has excellent high-temperature cutting performance and wear resistance of a silicon nitride ceramic material and relatively high toughness and strength of a hard alloy material, and meanwhile, the transition layer also has relatively high binding force and mechanical property.
本发明为一种碳化钨‑氮化硅陶瓷复合立铣刀及其制备方法。包括如下步骤：制备氮化硅基粉末、碳化钨基粉末和过渡层粉末；采用上部直径大，下部直径小，中间直径逐渐过渡的模具，按照从上到下碳化钨材料‑过渡层材料‑氮化硅陶瓷粉末的顺序填入模具中，预压；烧结机构放入等离子烧结炉中以50～100℃/min的升温速率进行烧结，烧结温度为1250℃～1650℃，烧结压力为50～70MPa，保温时间为6min，随后随炉冷却，制得碳化钨/氮化硅复合棒材；对碳化钨/氮化硅复合棒材进行加工得到碳化钨/氮化硅陶瓷复合立铣刀。本发明的立铣刀同时具有氮化硅陶瓷材料优异的高温切削性能以及耐磨性能和硬质合金材料较高的韧性和强度，同时过渡层也具有较高的结合力以及力学性能。
Tungsten carbide-silicon nitride ceramic composite end mill and preparation method thereof
The invention relates to a tungsten carbide-silicon nitride ceramic composite end mill and a preparation method thereof. Comprising the following steps: preparing silicon nitride-based powder, tungsten carbide-based powder and transition layer powder; a mold with the upper diameter being large, the lower diameter being small and the middle diameter being gradually transited is adopted, the tungsten carbide material, the transition layer material and the silicon nitride ceramic powder are sequentially filled into the mold from top to bottom, and pre-pressing is conducted; the sintering mechanism is put into a plasma sintering furnace for sintering at the heating rate of 50-100 DEG C/min, the sintering temperature is 1250-1650 DEG C, the sintering pressure is 50-70 MPa, the heat preservation time is 6 min, then furnace cooling is conducted, and the tungsten carbide/silicon nitride composite bar is prepared; and processing the tungsten carbide/silicon nitride composite bar to obtain the tungsten carbide/silicon nitride ceramic composite end mill. The end mill disclosed by the invention has excellent high-temperature cutting performance and wear resistance of a silicon nitride ceramic material and relatively high toughness and strength of a hard alloy material, and meanwhile, the transition layer also has relatively high binding force and mechanical property.
本发明为一种碳化钨‑氮化硅陶瓷复合立铣刀及其制备方法。包括如下步骤：制备氮化硅基粉末、碳化钨基粉末和过渡层粉末；采用上部直径大，下部直径小，中间直径逐渐过渡的模具，按照从上到下碳化钨材料‑过渡层材料‑氮化硅陶瓷粉末的顺序填入模具中，预压；烧结机构放入等离子烧结炉中以50～100℃/min的升温速率进行烧结，烧结温度为1250℃～1650℃，烧结压力为50～70MPa，保温时间为6min，随后随炉冷却，制得碳化钨/氮化硅复合棒材；对碳化钨/氮化硅复合棒材进行加工得到碳化钨/氮化硅陶瓷复合立铣刀。本发明的立铣刀同时具有氮化硅陶瓷材料优异的高温切削性能以及耐磨性能和硬质合金材料较高的韧性和强度，同时过渡层也具有较高的结合力以及力学性能。
Tungsten carbide-silicon nitride ceramic composite end mill and preparation method thereof
一种碳化钨-氮化硅陶瓷复合立铣刀及其制备方法
WANG ZHENHUA (Autor:in) / YANG CHEN (Autor:in)
25.04.2023
Patent
Elektronische Ressource
Chinesisch
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