Tension straightening
Hengxiang titanium metal introduces the titanium pipe straightening method, titanium pipe commonly used straightening methods are: Sine straightening, tension straightening, pressure straightening, etc. The workpiece exert tension straightening is beyond the vertical force of material yield limit, to cause the plastic extension and realize the shape defect correction processing method, known as drawing straightening, straightening, the tension straightening machine for the drawback of the entities of wave shape before and after the titanium bar, titanium wire, titanium pipe to exceed the material yield limit tensile stress, The tensile stress and titanium rod original residual stress accumulation, in the elongation is larger, part of the tensile stress is offset, so that the actual deformation stress is reduced, straightening plastic elongation is small; In the original extension is small, because of the accumulation of tensile stress, in fact, the deformation stress is expanded, and the plasticity is widened when straightening. As a result, after the effect of tension, the straightened parts of the workpiece are extended evenly, and the wavy shortcoming is thus removed.
2.sine straightening
Stick to simple cross section in the production of silk material, pipe straightening methods widely adopted sine, titanium pipe, titanium rods in the skew roller straightening machine, straightening machine, roll number is greater than 5 (usually 6 ~ 30 roller), its working principle is through the roller on the workpiece consecutive three-point bending repeatedly, thus gradually narrowing the scope of the change of the workpiece residual curvature.
3.pressure straightening
Sinusoidal straightening is usually used together with pressure straightening. The workpiece with larger bending degree is straightened by pressure straightening machine first, and then the inclined roll straightening is carried out. The straightening effect mainly depends on the straightening machine pressure and roll Angle, and the pressure depends on the yield strength and bending degree of the alloy material. If it is high strength titanium alloy, bending degree is larger, straightening pressure should be larger, smaller on the contrary, the size of roll Angle depends on the diameter of the workpiece, the diameter of the workpiece should be larger than the small straightening Angle