Gr5 titanium alloy cold wire drawing method, involves a titanium alloy wire processing method, choose good surface, chemical stability, internal number of zero defect Gr5 titanium alloy sheet, surface coating after annealing, wire drawing machine in 550 under each 15% 20%, the deformation of the defects produced in the process of drawing, in after alkali cleaning, showing the surface, defects, After the surface defects are removed, the grain structure is hardened by cold drawing and crushing. After two hours of heat holding at 750℃ in a well furnace, the equiaxed grain structure is obtained. After at least three times of deformation, the final size of titanium alloy wire is obtained. After the cold drawing process of titanium alloy disclosed in the invention, obvious work hardening effect occurs, and the plastic recovery of blank after annealing treatment does not affect the next cold drawing process, which is obviously better than the hot drawing state.
Divided into pure titanium and titanium alloy, titanium is added other alloying elements is titanium alloy, independent of titanium is pure titanium "contains some trace amounts of inevitable impurities", which according to the different of the titanium alloy composition and room temperature can be divided into near and alpha titanium alloy alpha type alloy, (alpha + beta) type alloy type, close beta alloy as well as the beta type; Titanium and titanium alloy wire products are generally hard state (Y) and annealed state (M). It has good corrosion resistance, high specific strength, non-magnetic, high biocompatibility, low impedance to ultrasonic wave, high sound transmission coefficient, hydrogen storage and better shape memory function and a series of excellent characteristics of important use value. In view of the aforementioned advantages, titanium alloy wire has been widely used in aerospace, petrochemical, medical and health, automobile, construction, sports and leisure products and many other fields.
Gr5 titanium alloy cold drawing method, selection of surface excellent, stable chemical composition, internal defects of Gr5 titanium alloy disc circle, titanium alloy disc circle surface coating after annealing, under 550 drawing machine each time 15%-20% deformation, the wire into the working area should ensure that the working area when the mold Angle is 40-45 degrees, Control in the process of titanium alloy plate falling round metal powder crumbs to keep clear of in time, in the process of drawing die smoothness, die that residues of the metal powder crumbs of defects, in after alkali cleaning, showing the surface, defects, to remove surface defects, grain organization formed by cold drawing breakage hardening, through 750 ° C in pit type furnace two hours heat preservation heat treatment, After at least three times of deformation, the titanium alloy wire products with the required size can be obtained.
