A high-temperature-resistant high-elastic nickel-chromium alloy strip and its preparation method

A nickel-chromium alloy and high-temperature-resistant technology, which is applied in the field of high-temperature-resistant high-elastic nickel-chromium alloy strip and its preparation, can solve the problems of poor temperature resistance and cannot ensure reliable sealing, and achieve broad industrial application prospects, convenient operation, and excellent preparation technology simple effect

Active Publication Date: 2018-10-09
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a high-temperature-resistant high-elastic nickel-chromium-gold strip and its preparation method to solve the problem that the existing alloy strip is used for bellows in severe service environments above 650°C. Poor temperature resistance can not guarantee the technical problem of reliable sealing

Method used

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  • A high-temperature-resistant high-elastic nickel-chromium alloy strip and its preparation method
  • A high-temperature-resistant high-elastic nickel-chromium alloy strip and its preparation method

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Experimental program
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Embodiment 1

[0024] The production process of high-temperature-resistant and high-elastic nickel-chromium alloy strip is: batching→vacuum induction melting→vacuum self-consumption smelting→homogenization→billet opening→hot forging→hot rolling→solution treatment→pickling→cold rolling→annealing of finished products→ Package.

[0025] In the batching process, the weight ratio of each component of the high-temperature resistant and high-elastic nickel-chromium alloy strip is: C: 0.03%, B: 0.005%, Al: 1.5%, Ti: 2.0%, Cr: 19.5%, Mo: 8.5% , Co: 10.0%, and the rest is Ni.

[0026] In the homogenization process, a two-stage soaking method was adopted. After holding at 850°C for 3 hours, the temperature was raised to 1180°C at a rate of 55°C / h and held at 30 hours.

[0027] In the hot forging process, the starting forging temperature is 1150°C, and the final forging temperature is 1030°C.

[0028] In the hot rolling process, the heating temperature was 1160° C., the finish rolling temperature was ...

Embodiment 2

[0036] The production process of high-temperature-resistant and high-elastic nickel-chromium alloy strip is: batching→vacuum induction melting→vacuum self-consumption smelting→homogenization→billet opening→hot forging→hot rolling→solution treatment→pickling→cold rolling→annealing of finished products→ Package.

[0037] In the batching process, the weight ratio of each component of the high-temperature resistant and high-elastic nickel-chromium alloy strip is: C: 0.03%, B: 0.006%, Al: 1.6%, Ti: 2.1%, Cr: 20.5%, Mo: 8.8% , Co: 10.5%, and the rest is Ni.

[0038] In the homogenization process, a two-stage soaking method was adopted. After holding at 860°C for 3 hours, the temperature was raised to 1200°C at a rate of 50°C / h and held for 30 hours.

[0039] In the hot forging process, the starting forging temperature is 1150°C, and the final forging temperature is 1030°C.

[0040] In the hot rolling process, the heating temperature was 1165° C., the finish rolling temperature was...

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Abstract

The invention relates to a high-temperature-resistant high-elastic nickel-chromium alloy strip. The alloy strip comprises, by weight, 0.02%-0.10% of C, 0.003%-0.008% of B, 1.3%-1.7% of Al, 1.9%-2.3% of Ti, 19.0%-21.0% of Cr, 8.0%-9.0% of Mo, 9.0%-11.0% of Co and the balance Ni. The invention further provides a preparation method of the high-temperature-resistant high-elastic nickel-chromium alloy strip. The production procedures of the method include material proportioning, vacuum induction melting, vacuum self-consuming smelting, homogenization, cogging, hot forging, hot rolling, solid solution treatment, acid pickling, cold rolling, finished product annealing and packaging. The preparation process is simple, operation is convenient, the cost is low, the structure homogeneity of the strip can be improved effectively, the mechanical property and using temperature of the strip can be remarkably improved, the service life of the strip can be remarkably prolonged, the defects in the prior art are overcome, and the industrial application prospects are wide.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a high-temperature-resistant high-elastic nickel-chromium alloy strip and a preparation method thereof. Background technique [0002] Metal bellows have elastic characteristics, pressure resistance, sealing, corrosion resistance, temperature resistance and other properties, and have become the core components commonly used in industrial fields such as ships, automobiles, electric power, petrochemicals, machinery, and instruments. Bellows usually bear complex external forces and high stress during service, and the working temperature is high, and the working medium is highly corrosive. Therefore, the material used to make bellows must have certain temperature resistance, high tensile strength and plasticity, and stable elastic properties. [0003] Bellows are generally welded from extremely thin materials. When the operating temperature is lower than 450°C and the medium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22F1/10
CPCC22C19/055C22C19/056C22F1/10
Inventor 石照夏颜晓峰段春华赵明汉陈霞
Owner CENT IRON & STEEL RES INST
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