A Production Process of Neck Flange to Improve Production Efficiency

Abstract

The invention discloses a neck flange production process for improving production efficiency, which belongs to the technical field of flange production. The key points of the technical scheme are step S1: cutting, cutting the blank from the round steel; step S2: heating, cutting the blank Put it in a heating furnace and heat it so that the temperature of the billet is higher than the recrystallization temperature and lower than the temperature of the solidus; step S3: free forging, using a press to upset the heated billet, and then punching the billet with a punch ; S4: Rolling the ring, installing the blank on the ring rolling machine to grind the ring, while rolling the ring, apply axial pressure to the edge of the end face side wall of the billet close to the outer circle, so that the end face side wall of the billet forms a flange neck; step S5: annealing, placing the billet in a resistance furnace for annealing; step S6, turning, turning the flange with a lathe. The present invention has the effect of improving production efficiency.

Description

technical field [0001] The invention relates to the technical field of flange production, more specifically, it relates to a neck flange production process for improving production efficiency. Background technique [0002] Ring rolling is the step of processing ring parts with a central hole in the forging process. It is a plastic processing process in which ring parts are continuously and locally plastically deformed by means of a ring rolling machine, and then the wall thickness is reduced, the diameter is enlarged, and the cross-sectional profile is formed. . In the process of flange processing, ring rolling operation is often used. [0003] At present, the invention patent with the publication number CN110343950A discloses a large-diameter titanium and zirconium high-neck flange forging process, which includes the following steps: Step 1: Add the raw materials in proportion to the melting furnace, Under certain conditions, the smelting time is 2-4 hours to obtain the a...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: first use free forging to form the flange neck, and then use the rolling ring to expand the hole and reshape, but the free forging needs to artificially place the cushion block when forging the flange neck on the edge of the flange, and then use the punch of the press to hit the pad to compress the edge of the flange. After repeating the above operations many times, the edge of the flange is compressed to form a flange neck, but The above operations require manual operations, resulting in inconvenient process operations and low production efficiency.

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