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Manufacturing process of boron nitride block and boron nitride block
The invention provides a manufacturing process of a boron nitride block and the boron nitride block, and the manufacturing process comprises the following steps: (1) dry mixing: carrying out dry mixing on boron nitride powder and boric acid powder and/or boron oxide powder; (2) pre-pressing: pre-pressing the powder mixed in the step (1) to form a boron nitride block; (3) crushing: crushing and granulating the pre-pressed boron nitride blocks, and screening the granulated particles; and (4) molding: carrying out dry pressing molding on the particles in the step (3). According to the manufacturing process of the boron nitride block and the boron nitride block, the boron nitride block formed through dry pressing of the manufacturing process is large in density, the process is simple, direct dry pressing forming is achieved, high-temperature and high-pressure sintering is not needed, machining forming is not needed, and the cost is low. Boric acid plays a bridging role among boron nitrideparticles, and boron nitride is used as a main body material of the block to play the characteristics of high temperature resistance and insulation.
本发明提供了一种氮化硼块的制造工艺及氮化硼块，所述的制造工艺包括以下步骤，(一)干混：将氮化硼粉末与硼酸粉末和/或氧化硼粉末干混；(二)预压：对干步骤(一)中混合后的粉末进行预压，形成氮化硼块；(三)粉碎：将预压后的氮化硼块进行粉碎造粒，造粒后的颗粒筛分；(四)成型：将步骤(三)中的颗粒干压成型。本发明的一种氮化硼块的制造工艺及氮化硼块，该制造工艺干压成型的氮化硼块密度大，且该工艺简单，直接干压成型，不需要高温高压烧结，不需要机加工成型，成本低。硼酸在氮化硼微粒间起到桥接作用，氮化硼作为块的主体材料发挥耐高温及绝缘的特性。
Manufacturing process of boron nitride block and boron nitride block
The invention provides a manufacturing process of a boron nitride block and the boron nitride block, and the manufacturing process comprises the following steps: (1) dry mixing: carrying out dry mixing on boron nitride powder and boric acid powder and/or boron oxide powder; (2) pre-pressing: pre-pressing the powder mixed in the step (1) to form a boron nitride block; (3) crushing: crushing and granulating the pre-pressed boron nitride blocks, and screening the granulated particles; and (4) molding: carrying out dry pressing molding on the particles in the step (3). According to the manufacturing process of the boron nitride block and the boron nitride block, the boron nitride block formed through dry pressing of the manufacturing process is large in density, the process is simple, direct dry pressing forming is achieved, high-temperature and high-pressure sintering is not needed, machining forming is not needed, and the cost is low. Boric acid plays a bridging role among boron nitrideparticles, and boron nitride is used as a main body material of the block to play the characteristics of high temperature resistance and insulation.
本发明提供了一种氮化硼块的制造工艺及氮化硼块，所述的制造工艺包括以下步骤，(一)干混：将氮化硼粉末与硼酸粉末和/或氧化硼粉末干混；(二)预压：对干步骤(一)中混合后的粉末进行预压，形成氮化硼块；(三)粉碎：将预压后的氮化硼块进行粉碎造粒，造粒后的颗粒筛分；(四)成型：将步骤(三)中的颗粒干压成型。本发明的一种氮化硼块的制造工艺及氮化硼块，该制造工艺干压成型的氮化硼块密度大，且该工艺简单，直接干压成型，不需要高温高压烧结，不需要机加工成型，成本低。硼酸在氮化硼微粒间起到桥接作用，氮化硼作为块的主体材料发挥耐高温及绝缘的特性。
Manufacturing process of boron nitride block and boron nitride block
一种氮化硼块的制造工艺及氮化硼块
CHEN DUNHAN (author) / ZHANG WEI (author) / PENG HAO (author)
2021-01-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method for antioxidant boron nitride graphite block material
| European Patent Office | 2015