Method for preparing NiTi memory alloy springs by amorphous molds

The invention discloses a method for preparing NiTi memory alloy springs by amorphous molds. The method comprises the steps of 1) cold drawing treatment: NiTi memory alloy wires are cold drawn; 2) formation of springs by winding: the NiTi memory alloy wires cold drawn in the step 1) are wound as the springs; and 3) shaping and heating: the springs wound in the step 2) are shaped and heated in a non-constraint state to obtain the NiTi memory alloy springs. The method prepares the shape memory alloy springs without needing shaping molds, and can prepare the memory alloy springs with complex structures. 本发明公开了一种无定型模具制备NiTi记忆合金弹簧的方法，包括如下步骤：1)冷拔处理：对NiTi记忆合金丝进行冷拔处理；2)缠绕成簧：将步骤1)冷拔处理后的NiTi记忆合金丝绕制成弹簧；3)定型热处理：将步骤2)绕制成的弹簧在无约束状态下进行定型热处理，得到NiTi记忆合金弹簧。本发明的方法制备形状记忆合金弹簧不需要使用定型模具，且能够制备具有复杂结构的记忆合金弹簧。