Production manner null of hot rolling board of pure titanium for industry

摘要

PURPOSE: To produce a hot rolled sheet free from cracks and flaws and having a completely recrystallized uniform structure by subjecting the cast slab of pure titanium for industry to specified hot rolling at the specified temp. range according to component composition and recrystallizing and annealing. ;CONSTITUTION: The cast slab of pure titanium for industry is rolled at ≥20% draft in the temp. range of ≥T°C shown in the formula of T=886+147.7[O]+161.8[C]+294.3[N]-19.8[Fe] ([O], [C], [N] and [Fe] respectively denote the weight% of O, C, N and Fe as impurities. The titanium material is successively rolled at ≥80% draft in the temp. range of 600°C to T-30°C. After that, the rolled stock is subjected to recrystallization annealing preferably at 600 to 750°C. Thus, the hot rolled sheet of pure titanium for industry free from the residual structure of unrecrystallized ones and good in workability can be obtd.;COPYRIGHT: (C)1996,JPO