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High-precision zirconium alloy plate rolling method

A zirconium alloy, high-precision technology, applied in the rolling field of high-precision zirconium alloy plates, can solve the problems of inability to meet the needs of the nuclear industry and limited precision control of plates, so as to avoid uneven rolling, reduce deformation resistance, and offset Effect of rolling unevenness

Inactive Publication Date: 2019-01-01
西安西部新锆科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional zirconium alloy sheet preparation method is sheet rolling in sheet rolling mills. Since sheet rolling has limited control over sheet precision and sheet shape, it cannot meet the needs of the nuclear industry.

Method used

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  • High-precision zirconium alloy plate rolling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] Step 1. Grinding the zirconium alloy slab until the same-slab difference is 0.15mm; the zirconium alloy slab is composed of the following components in mass percentage: Sn 1.15%, Nb 0.3%, Fe 0.4%, Cr 0.08%, O 0.1%, the balance is Zr and unavoidable impurities, the width of the zirconium alloy slab is 1000mm, the length is 2000mm, and the thickness is 12mm;

[0028] Step 2. Put the ground zirconium alloy slab in step 1 between the upper work roll 6-1 and the lower work roll 6-2 of the four-roll reversible plate mill 6, and then use the first hydraulic clamp 3 and the second hydraulic clamp 8 are respectively clamped on the two ends of the ground zirconium alloy slab 5, and then the first hydraulic cylinder 1 provided with the first tension sensor 2 and the first hydraulic cylinder 1 provided with the second tension sensor 9 are used Two hydraulic cylinders 10 make the ground zirconium alloy slab generate and maintai...

Embodiment 2

[0031] This embodiment includes the following steps:

[0032] Step 1. Grinding the zirconium alloy slab until the same-slab difference is 0.20mm; the zirconium alloy slab is composed of the following components by mass percentage: Sn 1.15%, Nb 0.3%, Fe 0.4%, Cr 0.08%, O 0.1%, the balance is Zr and unavoidable impurities, the width of the zirconium alloy slab is 800mm, the length is 1500mm, and the thickness is 8mm;

[0033] Step 2. Put the ground zirconium alloy slab in step 1 between the upper work roll 6-1 and the lower work roll 6-2 of the four-roll reversible plate mill 6, and then use the first hydraulic clamp 3 and the second hydraulic clamp 8 are respectively clamped on the two ends of the ground zirconium alloy slab 5, and then the first hydraulic cylinder 1 provided with the first tension sensor 2 and the first hydraulic cylinder 1 provided with the second tension sensor 9 are used Two hydraulic cylinders 10 make the ground zirconium alloy slab generate and maintain ...

Embodiment 3

[0036]Step 1. Grinding the zirconium alloy slab until the same-slab difference is 0.25mm; the zirconium alloy slab is composed of the following components in mass percentage: Sn 1.15%, Nb 0.3%, Fe 0.4%, Cr 0.08%, O 0.1%, the balance is Zr and unavoidable impurities, the width of the zirconium alloy slab is 300mm, the length is 1000mm, and the thickness is 5mm;

[0037] Step 2. Put the ground zirconium alloy slab in step 1 between the upper work roll 6-1 and the lower work roll 6-2 of the four-roll reversible plate mill 6, and then use the first hydraulic clamp 3 and the second hydraulic clamp 8 are respectively clamped on the two ends of the ground zirconium alloy slab 5, and then the first hydraulic cylinder 1 provided with the first tension sensor 2 and the first hydraulic cylinder 1 provided with the second tension sensor 9 are used Two hydraulic cylinders 10 make the ground zirconium alloy slab generate and maintain the front tension and the back tension respectively; the ...

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Abstract

The invention discloses a high-precision zirconium alloy plate rolling method. The method comprises the steps that 1, a zirconium alloy slab is polished until the intra-plate difference is 0.15-0.25 mm; 2, the polished zirconium alloy slab passes through a working roller of a reversible plate rolling mill and is clamped by a hydraulic clamp, and then a hydraulic cylinder provided with a tension sensor is used for making the polished zirconium alloy slab generate and keep tension; and 3, reciprocating tension rolling is carried out and the tension in the rolling process of the zirconium alloy slab is simultaneously controlled to obtain a zirconium alloy plate material. According to the method, the hydraulic cylinder with the tension sensor, a displacement sensor and the plate rolling mill are cooperatively used, the zirconium alloy plate is subjected to reciprocating tension rolling, and the deformation resistance of the working roller and the zirconium alloy plate is reduced by accurately adjusting the tension during rolling, so that the phenomenon of uneven rolling of the zirconium alloy plate and surface scratches and cracks caused by moving and sliding of the zirconium alloy plate are avoided, and the precision of the surface of the zirconium alloy plate is improved.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and in particular relates to a rolling method of a high-precision zirconium alloy plate. Background technique [0002] Zirconium alloys are widely used in the nuclear industry due to their low thermal neutron absorption cross section, good corrosion resistance to high temperature water and superheated steam, and good mechanical properties. Zirconium alloy plates used in the nuclear industry have extremely high requirements for their precision. The traditional zirconium alloy sheet preparation method is sheet rolling in a sheet rolling mill. Since sheet rolling has limited control over sheet precision and sheet shape, it cannot meet the needs of the nuclear industry. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a rolling method of high-precision zirconium alloy plate aiming at the deficiencies of the above-mention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B3/00
CPCB21B1/38B21B3/00B21B2001/386
Inventor 张永刚刘杰王宏星周琳琳席波涛
Owner 西安西部新锆科技股份有限公司
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