Semi-tandem rolling machining method for titanium and nickel-based shape memory alloy high piece-weight wire rod

The invention discloses a semi-tandem rolling machining method for a titanium and nickel-based shape memory alloy high piece-weight wire rod. A titanium and nickel-based shape memory alloy ingot is heated and subjected to heat insulation after being subjected to surface scalping treatment, the titanium and nickel-based shape memory alloy ingot undergoes multi-pass cogging rolling, then the flaws in the two ends of the ingot are cut off, the ingot is finally placed in a tandem rolling machine set, and titanium and nickel-based shape memory alloy high piece-weight wire rods of different specifications are machined according to different machining passes. The semi-tandem rolling machining method for the titanium and nickel-based shape memory alloy high piece-weight wire rod improves the stress condition of the titanium and nickel-based shape memory alloy ingot during cogging by adopting the temperature control rolling cogging mode, avoids the impact force caused by free forging cogging and prevents shear crack,