Titanium alloy has good room temperature and high temperature mechanical properties, excellent fatigue resistance and crack growth resistance, and has been widely used in the manufacture of pressure vessels on spacecraft and missiles, rocket engine casings, aircraft skins, ribs, webs and other fields. Important materials for aerospace, aerospace and defense industries. At present, the global demand for titanium alloy sheets is increasing. In the face of market demand, with the rapid development of the global aerospace industry and the application of the new technology of superplastic forming and diffusion joining of titanium alloy sheets, the international and domestic demand for titanium alloy sheets is increasing.
In the production of domestic titanium alloy plates, most of them still use the single-piece rolling method. Due to the poor low temperature plasticity of titanium alloys and the large cold deformation work hardening, it is extremely difficult to use the single-piece method to produce thin plates. In order to make the rolling process go smoothly and reduce the temperature drop of the metal during the forging process, especially to reduce the chill on the surface of the billet, the die for forging titanium alloy needs to be preheated. Otherwise, the metal temperature drop and surface chill will make the metal not fill the mold groove well and may cause many cracks. Die preheating systems for titanium alloy forging are usually detachable, but sometimes a heating device mounted on the press is also used. Detachable die heating systems are usually gas heaters that slowly heat the die to the desired temperature range before the modules are assembled into the forging equipment. The heating device solidified on the press usually adopts induction heating or resistance heating.
According to statistics, in the production of TC4 titanium plate, the invisible loss caused by alkaline pickling and grinding is as high as about 30%, the comprehensive yield is only about 35%, and the production cycle is long and the performance is unstable. The deformation rate of its cold rolling degree is not more than 25%, and it requires multiple cold rolling, intermediate annealing, and alkali pickling, and process defects such as cracks, edge cracks, slag drop, and cratering are prone to occur during rolling. Production process of titanium alloy plate (below 1.0mm), titanium alloy cross rolling and beta thermal process, self-developed stack rolling and clad rolling process, titanium and titanium alloy warm rolling technology, self-developed atmosphere protection controllable Cooling gravity creep correction technology and other key technologies for a series of flow rectification processes. In the test of the new production process of TC4 sheet, 0.6mm thick TC4 sheet has been produced by cladding and rolling process, and it has been put into mass production. AVSMA-VSMPO in Russia, Reactive Metals Corporation (RMI) in the United States and NKK in Japan all use the cladding and rolling process to produce titanium alloy sheets.
Contact us for more information. Thank you
Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Cuntry:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Gmail:nicole@jmyunti.com
Website:www.jm-titanium.com
