| abstract |
The present disclosure provides a molding method for producing a screw drill stator using an elastomer material, which includes the following steps: 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 of the dried stator tube, 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 prepolymer of the elastomer material defoamed in step S4 with a curing agent, and pouring the obtained mixture into the assembled mold obtained in step S3, sealing and curing the poured assembled mold by hierarchical heating; after the curing is completed, drawing the mandrel mold from the assembled mold, so that the stator is obtained. Through the process of the invention, a screw drill stator with excellent properties such as hardness, tear strength, tensile strength, elongation at break, and permanent deformation rate can be obtained. |