Processing method of pure-zirconium wide sheet

A processing method and wide-width technology, which is applied in the field of processing pure zirconium wide-width thin plates, can solve the problems of undeveloped technology and stable production technology for wide-width pure zirconium thin plates, and achieve uniform and anisotropic horizontal and vertical mechanical properties. Small, good surface quality effects

Active Publication Date: 2016-03-23
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the width of domestic pure zirconium sheets is generally less than 1000mm, and there is no mature technology and stable production process for wide-width pure zirconium sheets

Method used

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  • Processing method of pure-zirconium wide sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment includes the following steps:

[0028] Step 1. Put a pure zirconium slab with a size of 150mm (thickness) × 800mm (width) × 1100mm (length) in a heating furnace for heating, so that the temperature of the pure zirconium slab is raised to 740 ° C and kept for 120 minutes, and then sent to hot rolling The first rolling is carried out in the machine to obtain the first semi-finished slab with a size of 27.5mm (thick) × 800mm (width) × 6000mm (long); the first rolling is unidirectional rolling, and the first rolling The total deformation is 81.67%, and the first rolling is divided into 8 passes to complete, and the pass deformation rates of each rolling pass are: 10.00%, 16.30%, 22.12%, 22.73%, 26.47%, 24.00 %, 18.42% and 11.29%, the grade of the pure zirconium slab is Zr-1 (R60700);

[0029] Step 2: Cut the first semi-finished slab described in step 1 to a size of 27.5mm (thickness) × 800mm (width) × 1000mm (length), and then place the cut first semi-finis...

Embodiment 2

[0035] This embodiment includes the following steps:

[0036] Step 1. Put a pure zirconium slab with a size of 200mm (thickness) × 1000mm (width) × 1200mm (length) in a heating furnace for heating, so that the temperature of the pure zirconium slab is raised to 800°C and kept for 160 minutes, and then sent to hot rolling Carry out the first rolling in the machine, obtain the size and be 32mm (thick) * 1000mm (width) * 7500mm (long) the first semi-finished slab; The first rolling is unidirectional rolling, and the first rolling The total deformation amount is 84.00%, and the first rolling is divided into 9 passes to complete, and the pass deformation rates of each rolling pass are: 10.50%, 14.53%, 18.30%, 20.00%, 22.00%, 23.08% , 20.00%, 20.83% and 15.79%, the grade of the pure zirconium slab is Zr-3 (R60702);

[0037] Step 2. Cut the first semi-finished slab described in step 1 to a size of 32mm (thickness)×1000mm (width)×1500mm (length), and then place the cut first semi-fin...

Embodiment 3

[0043] This embodiment includes the following steps:

[0044] Step 1. Put a pure zirconium slab with a size of 140mm (thickness) × 1000mm (width) × 1170mm (length) in a heating furnace for heating, so that the temperature of the pure zirconium slab is raised to 770°C and kept for 80 minutes, and then sent to hot rolling The first rolling is carried out in the machine to obtain the first semi-finished slab with a size of 21mm (thick) × 1000mm (width) × 7800mm (long); the first rolling is unidirectional rolling, and the first rolling The total deformation is 85.00%, and the first rolling is divided into 8 passes to complete, and the pass deformation rates of each rolling pass are: 14.29%, 16.67%, 30.00%, 27.14%, 25.49%, 23.68% , 17.24% and 12.50%, the grade of the pure zirconium slab is Zr-3 (R60702);

[0045] Step 2. Cut the first semi-finished slab described in step 1 to a size of 21 mm (thickness) × 1000 mm (width) × 1300 mm (length), and then place the cut first semi-finish...

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Abstract

The invention discloses a processing method of a pure-zirconium wide sheet. The processing method of the pure-zirconium wide sheet comprises the steps that firstly, primary rolling is conducted on a pure-zirconium slab after the pure-zirconium slab is heated, so that a first semi-finished slab is obtained; secondly, secondary rolling is conducted on the first semi-finished slab after the first semi-finished slab is heated, so that a second semi-finished slab is obtained; thirdly, intermediate annealing is conducted on the second semi-finished slab after the second semi-finished slab is sheared, so that a third semi-finished slab is obtained; fourthly, shot blasting and spraying type acid pickling are conducted on the third semi-finished slab, so that a fourth semi-finished slab is obtained after oxide skin on the surface is removed; fifthly, cold rolling is conducted on the fourth semi-finished slab, so that a fifth semi-finished slab is obtained; and sixthly, deoiling, finished product vacuum annealing and leveling are conducted on the fifth semi-finished slab, so that the pure-zirconium wide sheet with the thickness being 0.4-4 mm and the width being 1000-1600 mm is obtained. By the adoption of the processing method, the pure-zirconium wide sheet which is good in surface quality, smooth in sheet shape, uniform in structure and transverse and longitudinal mechanical property and small in aeolotropy can be obtained.

Description

technical field [0001] The invention belongs to the technical field of zirconium plate processing, and in particular relates to a processing method for a pure zirconium wide thin plate. Background technique [0002] Pure zirconium has better corrosion resistance than stainless steel, nickel-based alloys, titanium and titanium alloys, and its mechanical and technological properties are mostly used as corrosion-resistant chemical equipment, especially reactors and heat exchangers for acetic acid, pesticides, plastics and other industries. , pumps, valves, piping, etc. The industrial zirconium material market has benefited from the rapid development of my country's chemical industry and has shown a warming trend. The demand for zirconium materials is increasing. In my country, about 500 tons of civil zirconium materials (zirconium materials without separation of zirconium and hafnium) are produced each year. [0003] The application of industrial pure zirconium composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B3/00B21B37/28B21B37/46B21B37/74
CPCB21B1/38B21B3/00B21B37/28B21B37/46B21B37/74B21B2001/386B21B2201/06B21B2261/20
Inventor 党鹏陈钧伟谢文龙张嫦娟刘宇蔡丹娜刘宇明李鹏范涵戴毅邢秋丽
Owner WESTERN TITANIUM TECH
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