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Silicon carbide ceramic cylinder sleeve for well-drilling slurry pump and preparation method of silicon carbide ceramic cylinder sleeve
The invention relates to a silicon carbide ceramic cylinder sleeve for a well-drilling slurry pump. The silicon carbide ceramic cylinder sleeve is composed of micron silicon carbide, submicron boron carbide powder, nanometer carbon black, and an organic binder, the amount ratios of which are, per one hundred grams of dried submicron boron carbide powder, 0.2-4.8% of submicron boron carbide powder, 12-25% of nanometer carbon black, and 6-25% of the organic binder. According to the invention, silicon carbide is taken as a raw material, and the silicon carbide ceramic cylinder sleeve is obtained via iso-static cool pressing and pressureless sintering. The hardness of the resultant silicon carbide ceramic cylinder sleeve can reach more than 26GPa, and is good in abrasive resistance, excellent in chemical resistance, and uniform and dense in inner organization structure. After the silicon carbide ceramic cylinder sleeve is subjected to fine machining, the internal surface smoothness can reach Ra0.2, and the service life can reach 4500 hours. The silicon carbide ceramic cylinder sleeve in the invention can work in mediums, such as well-drilling slurry or other liquid with high corrosivity.
Silicon carbide ceramic cylinder sleeve for well-drilling slurry pump and preparation method of silicon carbide ceramic cylinder sleeve
The invention relates to a silicon carbide ceramic cylinder sleeve for a well-drilling slurry pump. The silicon carbide ceramic cylinder sleeve is composed of micron silicon carbide, submicron boron carbide powder, nanometer carbon black, and an organic binder, the amount ratios of which are, per one hundred grams of dried submicron boron carbide powder, 0.2-4.8% of submicron boron carbide powder, 12-25% of nanometer carbon black, and 6-25% of the organic binder. According to the invention, silicon carbide is taken as a raw material, and the silicon carbide ceramic cylinder sleeve is obtained via iso-static cool pressing and pressureless sintering. The hardness of the resultant silicon carbide ceramic cylinder sleeve can reach more than 26GPa, and is good in abrasive resistance, excellent in chemical resistance, and uniform and dense in inner organization structure. After the silicon carbide ceramic cylinder sleeve is subjected to fine machining, the internal surface smoothness can reach Ra0.2, and the service life can reach 4500 hours. The silicon carbide ceramic cylinder sleeve in the invention can work in mediums, such as well-drilling slurry or other liquid with high corrosivity.
Silicon carbide ceramic cylinder sleeve for well-drilling slurry pump and preparation method of silicon carbide ceramic cylinder sleeve
BAO YUZHI (author) / LI HU (author) / ZHAO WENLIN (author) / JIANG WEI (author) / LIANG HONGJUN (author)
2015-07-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| European Patent Office | 2023
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2015