A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a machining process of a ceramic cutter. The machining process comprises the steps of powder raw material pre-pressing forming, blade prototype stamping, low-temperature heat treatment, hot-pressing vibration sintering, quenching, grinding and cutting, edging, heat treatment, cooling and reheating treatment. The ceramic cutter is cast by adopting a raw material combining zirconium oxide and rare earth oxide, so that the ceramic cutter is higher in strength and not easy to break, in the quenching process, an obtained primary blank blade is placed in a salt bath furnace tobe heated to 860-890 DEG C to be quenched, a solution containing 50-55% of NaCl and 50-45% of Na2CO3 is adopted as a salt bath medium, sodium ferrocyanide [Na4Fe(CN)6] or hard charcoal is adopted fordeoxidation, heat preservation is conducted for 3-6 h, and then oil cooling is conducted to the room temperature. The ceramic cutting tool is manufactured in the mode that heating quenching is conducted in the medium-temperature salt bath furnace and then low-temperature tempering is conducted, the surface of the ceramic cutting tool is smooth and clean, pocking marks and soft spots do not exist,and the hardness can reach 14.8 GPa. Through years of production practice tests, the ceramic cutter is heated and quenched in a newly prepared medium-temperature salt bath furnace, and the quality ofthe ceramic cutter is stable.
本发明提供一种陶瓷刀具的加工工艺，包括粉原料预压成型→刀片雏形冲压→低温热处理→热压振动烧结→淬火→磨切削→开刃→热处理→冷却→再加热处理；本发明采用氧化锆和稀土氧化物结合的原料铸造，其陶瓷刀具的强度更高，不易断裂；其中淬火工艺中将得到的初坯刀片放置盐浴炉中加热至860～890℃淬火，并采用50～55％NaCl+50～45％Na2CO3溶液作为盐浴介质，采用亚铁氰化钠[Na4Fe(CN)6]或硬木炭脱氧，保温3‑6h之后油冷至室温。采用上述中温盐浴炉中加热淬火再低温回火的方式制造陶瓷刀具，陶瓷刀具表面光洁，无麻点，无软点，硬度可达到14.8GPa。经多年的生产实践考验，在新配制的中温盐浴炉中加热淬火，陶瓷刀具质量稳定。
The invention provides a machining process of a ceramic cutter. The machining process comprises the steps of powder raw material pre-pressing forming, blade prototype stamping, low-temperature heat treatment, hot-pressing vibration sintering, quenching, grinding and cutting, edging, heat treatment, cooling and reheating treatment. The ceramic cutter is cast by adopting a raw material combining zirconium oxide and rare earth oxide, so that the ceramic cutter is higher in strength and not easy to break, in the quenching process, an obtained primary blank blade is placed in a salt bath furnace tobe heated to 860-890 DEG C to be quenched, a solution containing 50-55% of NaCl and 50-45% of Na2CO3 is adopted as a salt bath medium, sodium ferrocyanide [Na4Fe(CN)6] or hard charcoal is adopted fordeoxidation, heat preservation is conducted for 3-6 h, and then oil cooling is conducted to the room temperature. The ceramic cutting tool is manufactured in the mode that heating quenching is conducted in the medium-temperature salt bath furnace and then low-temperature tempering is conducted, the surface of the ceramic cutting tool is smooth and clean, pocking marks and soft spots do not exist,and the hardness can reach 14.8 GPa. Through years of production practice tests, the ceramic cutter is heated and quenched in a newly prepared medium-temperature salt bath furnace, and the quality ofthe ceramic cutter is stable.
本发明提供一种陶瓷刀具的加工工艺，包括粉原料预压成型→刀片雏形冲压→低温热处理→热压振动烧结→淬火→磨切削→开刃→热处理→冷却→再加热处理；本发明采用氧化锆和稀土氧化物结合的原料铸造，其陶瓷刀具的强度更高，不易断裂；其中淬火工艺中将得到的初坯刀片放置盐浴炉中加热至860～890℃淬火，并采用50～55％NaCl+50～45％Na2CO3溶液作为盐浴介质，采用亚铁氰化钠[Na4Fe(CN)6]或硬木炭脱氧，保温3‑6h之后油冷至室温。采用上述中温盐浴炉中加热淬火再低温回火的方式制造陶瓷刀具，陶瓷刀具表面光洁，无麻点，无软点，硬度可达到14.8GPa。经多年的生产实践考验，在新配制的中温盐浴炉中加热淬火，陶瓷刀具质量稳定。
Machining process of ceramic cutter
一种陶瓷刀具的加工工艺
YANG DEHAO (author)
2021-03-26
Patent
Electronic Resource
Chinese