Molding method for producing a stator for a screw drilling tool using elastomer material

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United States of America Patent

PATENT NO 11673297
APP PUB NO 20200230845A1
SERIAL NO

16843908

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Abstract

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A molding method for producing a screw drill stator using an elastomer material includes: S1. sequentially roughening, cleaning and drying an inner surface of the stator tube; mixing an adhesive and a diluent, coating the mixture obtained on the inner surface, and heating it for later use; S2, uniformly coating a mold release agent on a surface of a mandrel mold, and heating or drying it naturally for later use; S3. assembling the processed stator tube and the processed mandrel mold to obtain an assembled mold; S4. performing a vacuum defoaming under negative pressure on a mixture obtained by uniformly mixing a prepolymer of the elastomer material with a defoaming agent; S5. uniformly mixing the defoamed prepolymer of the elastomer material with a curing agent, and pouring the obtained mixture into the assembled mold, sealing and curing the poured assembled mold by hierarchical heating to obtain the stator.

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Patent Owner(s)

Patent OwnerAddress
SHANGHAI PUJIA DRILLING TECHNOLOGY CO LTDROOM 1156 BUILDING 5 NO 158 WEST PINGFU ROAD SITUAN TOWN FENGXIAN DISTRICT SHANGHAI 201400

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheung, Paul Kwong Shun Calgary, CA 4 2
Guo, Dingyu Calgary, CA 4 2
Liu, Xiaobo Chengdu, CN 69 97
Liu, Yiran Xuzhou, CN 9 5
Liu, Zhuanrui Xuzhou, CN 2 2
Zhang, Hongrui Tianjin, CN 6 69
Zhu, Minghui Shanghai, CN 9 44

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