Near-net forming manufacturing process for hundred-ton special-shaped section ring forge piece

A technology of special-shaped section and manufacturing process, which is used in manufacturing tools, forging/pressing/hammering machinery, metal rolling, etc. The effect of production efficiency, reduction of production cost, and shortening of manufacturing cycle
CN113182470APending Publication Date: 2021-07-30SHANDONG IRAETA HEAVY IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG IRAETA HEAVY IND
Publication Date
2021-07-30

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Abstract

The invention discloses a near-net forming manufacturing process for a hundred-ton special-shaped section ring forge piece. The near-net forming manufacturing process comprises the following steps that (1) free forging cogging is conducted, specifically, after a raw material steel ingot is put into a furnace to be heated and subjected to heat preservation, the steel ingot is placed on a workbench of an oil press to be machined through a forging process, and then a cylindrical blank is manufactured; oil press mold forming; after cogging, carrying out fire heat treatment; rolling and forming by a ring rolling mill; performing positive and tempering heat treatment after the rolling; performing rough turning; performing nondestructive testing; quenching and tempering heat treatment, specifically, carrying out performance heat treatment on the forge piece; sampling detection, specifically, performing body sampling and mechanical property detection on the forge piece subjected to the performance heat treatment; conducting finish turning; and packaging and warehousing finished products. According to the near-net forming manufacturing process, the material utilization rate can be increased by about 15%, and the production cost is greatly reduced.
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Description

technical field

[0001] The invention relates to the technical field of preparation of large-scale replacement ring forgings, in particular to a near-net-shaping manufacturing process for ring forgings with special-shaped cross-sections of a hundred tons. Background technique

[0002] The marine hydraulic piling hammer is the key equipment for marine engineering construction such as offshore wind power pipe piles, offshore platforms, bridges, etc., and the replacement ring is the core component of the offshore hydraulic piling hammer. The replacement ring forging used for processing the replacement ring is a special-shaped cross-section For ring forgings, the largest finished product weighs nearly 100 tons. The material used is high-alloy steel, and the performance requirements are strict, making it extremely difficult to manufacture. With the rapid development of offshore wind power in recent years, the demand for marine hydraulic piling hammers has shown explosive growth. H...

Claims

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