Half-solid state spin-extrusion-forging composite forming process for ground well valve cylindrical valve body

Abstract

The semi-solid spin-extruded forging composite forming process for well valve cylindrical bodies involves the following steps: First, aluminum alloy 6061 chips are placed into a mold cavity. A medium-frequency induction heated convex upper die is lowered to flatten the chips, obtaining a disc-shaped billet. This disc-shaped billet undergoes a semi-solid isothermal treatment to prepare semi-solid spherulitic aluminum alloy material. Next, the medium-frequency induction heated convex upper die is controlled to perform "spin-extruded deformation" on the semi-solid spherulitic aluminum alloy material, forming a semi-solid spherulitic well valve cylindrical body. Then, a multi-stage telescopic hydraulic cylinder and the medium-frequency induction heated convex upper die are controlled to apply "spin-extruded forging" deformation to the semi-solid spherulitic well valve cylindrical body, obtaining a well valve cylindrical body with a composite structure of semi-solid spherulitic and forged fiber structures. This invention's process can save production costs, improve production efficiency, and produce high-quality well valve cylindrical bodies.

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