I. Product Overview

This electronic-specific spring assembly is made by high-tensile spring steel wire, formed integrally by CNC equipment. It features a segmented variable diameter helical structure with loose and dense sections, allowing for the gradual release of pressure in different turn distances. The compression process is smooth with pressure increasing step by step. The middle part of the rod is covered with a green high-temperature resistant insulating layer, effectively isolating the metal spring and avoiding internal circuit short-circuit and leakage hazards of the equipment. The two ends are precision-machined with external threaded metal connectors, which can be directlyTighten and secure on the equipment housing, ensuring firm and convenient assembly.

All spring semi-finished products have undergone isothermal stress-relief tempering process, completely releasing the internal stress generated during winding, and still maintain their resilience after tens of thousands of reciprocating compression and rebound. Metal surface passivation prevents rusting, making it less prone to rust and jamming in humid environments. The insulating coating has strong adhesion, and it will not peel off or fall off after long-term exposure to heat. The entire set of accessories is pre-assembled, allowing customers to directly install and use them upon receipt, significantly reducing the assembly process for electronic products.

The wire thickness, overall length, segmented structure, elasticity parameters, and insulation section size can be adjusted as required. The entire structure can be developed for 1:1 replication based on the customer's physical sample. Elasticity, insulation, and durability tests are conducted first, and mass production is initiated only after all specifications are met. Dimensions accuracy, elasticity consistency, and insulation performance are fully inspected and controlled upon factory shipment.

Section 2: Core Highlights of Craftsmanship

1. Numerical control multi-section variable diameter integrated winding spring, pressure gradient controllable
   Segmental winding with variable pitch, high concentricity, vertical compression and rebound without tilt, suitable for precise pressure clamping requirements of electronic components.
2. High temperature stress-relief annealing treatment, long-lasting fatigue life
   Eliminate internal stress of wire, high-frequency reciprocating expansion and contraction are not easily fatigued and deformed, far exceeding the durability of ordinary cold rolled springs.
3. Intermediate high-temperature insulation coated rod, prevents circuit short-circuit failure
   Excellent pressure and heat resistance of the epoxy insulation layer, isolates the metal spring circuit, suitable for internal use of live components, with higher safety factor.
4. Standard threaded ends on both ends, easy and efficient assembly and maintenance
   External thread structure fits various mounting bases, provides firm locking and is not easy to loosen, with convenient maintenance and disassembly.

Section 3: Optional Customizable Raw Materials

1. 304 Stainless Steel Wire (Recommended)
   Corrosion-resistant and durable with balanced toughness, suitable for both dry and wet environments, the preferred material for the majority of electronic and electrical spring applications.
2. Qin steel wire SWP-B
   Top fatigue resistance, almost no attenuation in elasticity after one million cycles, specially designed for high-end precision digital instruments.
3. 65Mn manganese spring steel
   High elasticity, strong bearing capacity, cost-effective choice for heavy load tight conditions.
4. 316 Stainless Steel Wire
   Resistant to acid and alkali salt spray, suitable for kitchen and bathroom electrical appliances in high humidity environments.

4. Optional Surface Treatment Processes

• Stainless Steel Annealed in Natural Color (Actual Metal Craft): Clean without coating, rust-proof and stable, mainstream process for electronic and electrical accessories
• Electroplated zinc: Cost-effective corrosion protection solution for carbon steel springs, suitable for indoor dry equipment
• Nickel Plating: Enhanced antioxidant properties, refined and neat appearance
• Optional insulation layer: green, black, red high-temperature resistant epoxy coating

Five, applicable application scenarios

✅ Rice cookers, electric kettles, etc. small appliances temperature control switch reset spring kit
✅ Internal contact pressure elastic components for switch power supplies and chargers
✅ Temperature and humidity detection instrument stroke buffer tight-fitting accessories
✅ Built-in telescopic shock-absorbing elastic parts for portable digital products
✅ Electrical Insulation Spring Assembly for Small Industrial Control Module

6. Core Product Advantages

1. One-stop customization of complete accessories: spring, insulating rod, threaded end fitting processing, perfect size fit
2. Integrated structure of elastic reset + pressure buffering + electrical insulation, simplified internal components of the equipment
3. Segmented variable diameter design, gentle and controllable pressure, will not damage precise electronic contacts.
4. Multiple material and insulation color options available, compatible with various conditions such as live, humid, and high-frequency durability.
5. Support small batch R&D sample debugging for elasticity, large batch pre-installation and delivery, enhancing customer assembly efficiency.

Section 7: Common Procurement FAQs Q&A

Q1: Can the spring force size be adjusted as required?
A: Yes, the spring force coefficient and compression stroke can be accurately adjusted by changing the steel wire diameter, spring middle diameter, and effective coil number.
Q2: What is the best material for use inside home appliances that are exposed to prolonged heat and humidity?
A: Prioritized 304 stainless steel wire + high-temperature resistant epoxy insulation, anti-corrosion and heat-resistant, stable for long-term use without failure.
Q3: Can we customize springs with adjustable insulated segment lengths and without the insulating rod?
A: Both full set customization and individual item production according to demand are supported.
Q4: Do we support customized non-standard fine pitch thread specifications?
A: All types of miniature metric threads and non-standard fine pitch threads can be shaped and formed at the end.