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Preparation method of nickel-based superalloy ultra-thin strip

A nickel-based superalloy and ultra-thin strip technology, applied in the field of metallurgy, to achieve the effect of good shape, good size, and reduced rolling passes

Active Publication Date: 2022-02-25
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This rolling method is suitable for the preparation of extremely thin steel strips with a thickness of 0.3-0.4 mm, but not suitable for the production of nickel-based alloy strips with a smaller thickness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The method for preparing nickel-based superalloy ultra-thin strips comprises the following steps: (1) selecting a blank, and adopting a solid-solution GH4169 alloy plate of 120mm×500mm×1mm as the blank. (2) Cold rolling process, adopting four-high cold rolling mill to carry out three-rolling and two-annealing process rolling, the steps are: first, the billet is cold-rolled to a thickness of 0.32mm, the left and right tension of the rolling mill is 14kN, and the rolling speed is 0.05m / s; Secondly, annealing is carried out in a protective atmosphere furnace at a temperature of 980°C, held for 20 minutes, and cooled by argon; again, the annealed billet is cold-rolled to a thickness of 0.19mm, the left and right tension of the rolling mill is 11kN, and the rolling speed is 0.05m / s; again, Annealing is carried out in a protective atmosphere furnace at a temperature of 980°C, held for 20 minutes, and cooled by argon; finally, cold-rolled to a semi-finished ultra-thin strip wit...

Embodiment 2

[0017] The method for preparing nickel-based superalloy ultra-thin strips comprises the following steps: (1) selecting a blank, and adopting a solid-solution GH4169 alloy plate of 120mm×500mm×1mm as the blank. (2) Cold rolling process, adopting four-high cold rolling mill to carry out three-rolling and two-annealing process rolling, the steps are: first, the billet is cold-rolled to a thickness of 0.30mm, the left and right tension of the rolling mill is 14kN, and the rolling speed is 0.04m / s; Secondly, annealing is carried out in a protective atmosphere furnace at a temperature of 980°C, held for 20 minutes, and cooled by argon; again, the annealed billet is cold-rolled to a thickness of 0.20mm, the left and right tension of the rolling mill is 11kN, and the rolling speed is 0.04m / s; again, Annealing is carried out in a protective atmosphere furnace at a temperature of 980°C, held for 20 minutes, and cooled by argon; finally, cold-rolled to a semi-finished ultra-thin strip wit...

Embodiment 3

[0020] The method for preparing nickel-based superalloy ultra-thin strips comprises the following steps: (1) selecting a blank, and adopting a solid-solution GH4169 alloy plate of 120mm×500mm×1mm as the blank. (2) Cold rolling process, adopting four-high cold rolling mill to carry out three-rolling and two-annealing process rolling, the steps are: first, the billet is cold-rolled to a thickness of 0.29mm, the left and right tension of the rolling mill is 13kN, and the rolling speed is 0.06m / s; Secondly, annealing is carried out in a protective atmosphere furnace at a temperature of 980°C, held for 20 minutes, and cooled by argon; again, the annealed billet is cold-rolled to a thickness of 0.21mm, the left and right tension of the rolling mill is 12kN, and the rolling speed is 0.06m / s; again, Annealing is carried out in a protective atmosphere furnace at a temperature of 980°C, held for 20 minutes, and cooled by argon; finally, cold-rolled to a semi-finished ultra-thin strip wit...

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Abstract

The invention discloses a preparation method of a nickel-based superalloy ultra-thin strip, relates to the field of metallurgy, and aims to provide a novel method for preparing the nickel-based superalloy ultra-thin strip. According to the technical scheme, the preparation method of the nickel-based superalloy ultra-thin strip comprises the steps that a solid-solution-state nickel-based superalloy plate serves as a blank for rolling, then the blank is subjected to three-rolling and two-annealing rolling through a four-roller cold rolling mill, a semi-finished ultra-thin strip is obtained, finally, solid-solution treatment and aging treatment are conducted, and the finished ultra-thin strip is obtained. The blank is subjected to three-rolling and two-annealing rolling by adopting a four-roll cold rolling mill, and the deformation of each cold rolling pass is reasonably distributed so that the influence of work hardening on the rolling process is effectively reduced, and the rolling passes are reduced as much as possible; and meanwhile, the rolling speed and tension are reasonably controlled, effective deformation of the blank in the rolling process is controlled, and the blank is prevented from being snapped. The method is used for preparing the nickel-based superalloy ultra-thin strip with the thickness of 0.10-0.16 mm.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for preparing extremely thin nickel-based superalloy strips. Background technique [0002] In the field of nickel-based alloys, nickel-based alloy sheets can be prepared by rolling deformation process. For example, the patent application publication number CN111411265A discloses a nickel-based alloy ultra-thin plate and its preparation method. The preparation method of the nickel-based alloy ultra-thin plate includes alloy smelting, ingot homogenization treatment, blank opening, hot rolling, cold rolling and heat treatment steps to obtain ultra-thin sheets of nickel-based alloys with ultra-fine or nano-structured structures, and the thickness of the sheets is less than 0.1mm. [0003] The patent with the authorized announcement number of CN 104107833 B discloses a rolling method of cold-rolled thin strip steel. The hot-rolled steel strip coil with a thickness of 2.5-3.0mm is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10C22F1/02C21D9/52C21D1/74
CPCC22F1/10C22F1/02C21D9/52C21D1/74
Inventor 宋令玺郑淮北刘庭耀王英虎
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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