Huizhou Pengchengrui Technology Co., Ltd.

NiTi alloy springs are divided into two categories: shape memory type (temperature driven actuation) and hyperelastic type (large elastic deformation at room temperature). According to their mechanical structure, they can be classified into compression, tension, torsion, and irregular shaped springs; According to the memory mode, it is divided into one-way and two-way memory springs. Below are explanations for basic spring components, integrated components, and typical industry finished components.

1、 Basic nickel titanium spring components

（1）Shape memory spring (temperature controlled actuating spring)

>Relying on temperature phase transition to generate displacement and thrust, acting as a temperature sensor+actuator, without the need for motor electromagnets

• One way memory compression spring: low-temperature stretching deformation, automatically shrinks after heating; Low temperature requires bias spring/external force reset, commonly used in industrial temperature control valves and pressure relief mechanisms.

• One way memory stretching spring: low-temperature compression, thermal elongation; Low temperature is reset by external force.

• Dual way memory compression spring: After training, it shrinks at high temperatures, automatically elongates at low temperatures, and alternates between hot and cold to move back and forth automatically without the need for external force reset. It is commonly used in cyclic temperature control mechanisms.

• Two way memory stretching spring: high temperature elongation, low temperature automatic contraction.

• Nickel titanium torsion memory spring: outputting torque due to temperature changes, achieving rotational swing, used for temperature controlled air doors and optical aperture adjustment components.

（2）Super elastic nickel titanium spring (room temperature elasticity, no temperature actuation)

At room temperature, it has a super large reversible deformation and immediately rebounds upon unloading, without relying on temperature to trigger deformation. It is most commonly used in medical equipment.

• -Super elastic compression springs: miniature medical springs, catheter springs, interventional instrument springs.

• -Super elastic tension spring: orthodontic components, micro fixtures, precision contacts.

• -Super elastic torsion spring: eyeglass hinge, micro rotating mechanism.

• -Alien springs: conical springs, variable pitch springs, miniature flat springs, coil springs, custom formed springs.

Nickel titanium alloy spring components

2、 Integrated nickel titanium spring component (spring+matching structure)

1. Memory spring - bias spring component

Single way memory spring paired with regular stainless steel bias spring. When heated, the nickel titanium memory spring acts, and when cooled, it is pushed back to its original position by the bias spring. It is the most classic component of industrial temperature control valves and is widely used in constant temperature mixing valves, heat dissipation ventilation valves, and thermal protection switches.

2. Nickel titanium wire spring combination actuating component

Nickel titanium memory wires are connected in series/parallel with nickel titanium springs to amplify stroke and output force, used for small robots and lock release mechanisms.

3. Micro spring sleeve component

Micro nickel titanium springs are assembled inside thin-walled sleeves and are commonly used in minimally invasive interventional instruments to achieve pushing, rebounding, and grasping actions.

4. Spring base welding component

Nickel titanium spring spot welding/laser welding on titanium/stainless steel base, aerospace release mechanism, medical device implant components.

3、 Typical finished nickel titanium spring components in various industries

🩺  Medical grade nickel titanium alloy

• Self expanding stent spring component: vascular stent spring skeleton, low-temperature compression, automatic expansion at body temperature; Peripheral vascular and biliary stent spring mesh components.

• Stone basket spring component: Nickel titanium braided spring stone basket, used for grasping stones under an endoscope.

• Orthodontic spring components: super elastic tension spring, push spring, dental correction force spring.

• Conduit spring core assembly: inserted into the conduit spring layer, flexible and resistant to bending.

• Endoscope operating spring component: bending control torsion, tension compression spring component.

Nickel titanium alloy spring

✈️ Aerospace

• Satellite deployment mechanism spring components: solar panels, antenna release memory spring components, automatically deployed when heated during orbit.

• Temperature controlled pressure relief spring component: temperature controlled valve spring component inside the cabin.

🏭 Industry and Automotive

• Temperature control valve spring component: Temperature control valve core nickel titanium memory spring component, automatically shuts off when the water temperature is too high.

• Thermal protection switch spring component: When the temperature exceeds the limit, the spring drives the contact to disconnect.

• Automotive temperature control execution spring components: cooling water circuit temperature control valve, warm air door memory spring components.

📱 consumer products

• Eyeglasses hinge super elastic torsion spring component

• Intelligent wearable micro nickel titanium spring components

Key distinguishing points

• Shape memory spring: temperature driven motion, used as an actuator; Core parameter: Phase transition temperature Af.

• Super elastic spring: With high elasticity at room temperature, it is only used as an elastic component and is not subject to temperature driven deformation.

Huizhou Pengchengrui Technology Co., Ltd. specializes in producing nickel titanium alloy spring components. Customizable memory type, super elastic compression spring, tension spring, torsion spring and micro shaped spring, precise control of phase transition temperature, high dimensional accuracy, fatigue and corrosion resistance. Adapting to fields such as medical devices, industrial temperature control, precision electronics, etc., with our own production line, we support small batch sampling and non-standard customization, providing one-stop solutions from materials to finished products. We are a reliable supplier of nickel titanium precision springs.