The processing method of pure zirconium wide sheet is as follows: first, the pure zirconium slab is heated and the first rolling is carried out to get the first semi-finished slab; Second, the first semi-finished slab is heated after the second rolling, the second semi-finished slab is obtained; 3. The second semi-finished slab is cut and then subjected to intermediate annealing treatment to obtain the third semi-finished slab; 4. The third semi-finished slab is treated with shot blasting and spray pickling to get the fourth semi-finished slab after removing the surface oxide skin; 5. The fourth semi-finished slab is cold-rolled to obtain the fifth semi-finished slab; Vi. The fifth semi-finished slab was treated with oil removal, finished product vacuum annealing and leveling to obtain pure zirconium wide sheet with thickness of 0.4mm ~ 4mm and width of 1000mm ~ 1600mm. The invention can obtain a pure zirconium wide sheet with good surface quality, flat shape, uniform structure, uniform transverse and longitudinal mechanical properties and small anisotropy.
The application of industrial pure zirconium composite materials can save the amount of zirconium and greatly reduce the cost. Both large containers and pipes can be made of composite materials lined with zirconium and coated with steel or other materials. Zirconium - steel composites have been widely used in chemical corrosion resistance equipment. But using zirconium width smaller plate manufacture large equipment often need a lot of welding, welding process not only complex, and organizational performance during the welding process because of the weld area is not stable, weld is often easy to corrosion, fault sources, greatly affected the safety and service life of equipment, and the width is greater than the 1000mm wide sheet should be used, can effectively reduce weld, Improve the safety and service life of equipment, thus greatly extending the service life of equipment, thereby reducing maintenance costs and significantly shortening the downtime, but also shorten the manufacturing cycle of equipment, and reduce production costs. At present, the width of pure error sheet in China is generally less than1000 mm, and there is no mature technology and stable production process for wide pure error sheet.
Solve the technical problem is aimed at the deficiency of the existing technology, to provide a pure zirconium wide sheet machining method, the method adopts the hot milk machine and large cold milk machine dairy, large deformation of pure zirconium slab by two hot milk process reduce the anisotropic plates, a cold milk make organization further refinement, Finally, the pure zirconium wide sheet with good surface quality, flat shape, uniform structure, uniform mechanical properties in transverse and longitudinal direction and small anisotropy was obtained.
