Appliance application
Springs for appliances
and refrigeration.
Refrigerator doors, washing-machine suspension, compressor valve plates and air-conditioner louvers. High volume, many part numbers, tight piece price — and the line stops just as fast for a spring that arrives three weeks late as for one that does not fit.
The risk is the second batch, not the first
The appliance supply chain in Thailand is mature: high volume, many part numbers and a sharp eye on piece price. The failure that actually hurts is not a performance limit — it is the second delivery not feeling like the first.
Monthly replenishment and lot-level traceability are worth confirming before capacity figures. One stopped line costs more than the few cents a part that a cheaper supplier appears to save.
- Refrigerators, washing machines, air conditioners and small appliances
- Door torsion springs, suspension extension springs, clip strips and valve plates
- Wave springs and retaining rings for compact mechanisms
- Multi-part-number quotations consolidated into one delivery schedule
- Common materials held in stock to shorten replenishment
Send the part list, not one drawing
Appliance projects are usually a family of parts rather than a single spring. A part list with monthly quantities lets us price the family together and plan the material around it.
- Part-number list with drawings or samples
- Monthly or annual usage per part number
- Target piece price and packaging requirement
- Delivery address and replenishment frequency
Five places, five requirements
An appliance spring is small and inexpensive, but each position asks for something different from the coil.
Refrigerator doors and hinges
Door torsion springs and hinge return springs. The door has to hold at an intermediate angle: it should not swing open on its own, and it should not feel stiff. Coil count and preload angle are matched to the cabinet structure.
Washing-machine suspension
Damping extension springs and suspension springs. The constraint is corrosion in a wet environment plus long-term relaxation; material and coating have to be chosen together.
Inside the compressor
Valve plate springs, wave springs and retaining rings. Small parts under high-frequency cycling; fatigue and dimensional precision matter more than size suggests.
Louvers and clips
Louver return springs, panel clip strips and filter latches. Consistent assembly feel at low cost, usually quoted as a family of part numbers.
Many part numbers, small batches
Frequent tooling changes and scattered material planning are the hidden cost in appliance supply. We file each part number separately and hold common wire grades in stock so replenishment does not restart from zero.
Parts that arrive together
Where one appliance uses several springs, we can pack and schedule them as one shipment so the line receives a complete set rather than three partial deliveries.
Why lot traceability comes first
Most appliance complaints are not “you cannot make it” but “this batch is not the same as the last one”. These are the four controls we apply to that specific risk.
| Stage | What we do | What it protects |
|---|---|---|
| Incoming | Record the wire heat number and measured diameter per lot | Load drift caused by a change of wire lot |
| Process | First-piece approval and patrol inspection; parameters fixed by part number | Settings that do not return after a tooling change |
| Final | Sample load, free length and appearance by lot | Feel differences between batches at assembly |
| Traceability | Lot number linked to material, machine and inspection record | Slow or inconclusive complaint investigation |
Inspection frequency is agreed at RFQ and can follow your own incoming-inspection format.
Material and finish for a wet, cost-sensitive product
Appliance parts usually balance corrosion resistance against piece price. The final choice follows the environment and the drawing.
| Material | Typical position | Why it is chosen |
|---|---|---|
| SUS304 stainless | Door hinges, wet zones, visible trim | Corrosion resistance without a coating |
| SWP-B music wire | Door torsion, suspension, high-cycle parts | Good fatigue behaviour at volume cost |
| 65Mn spring steel | Compressor and heavy-duty mechanisms | Strength where space is limited |
| Phosphor bronze | Contacts and conductive strips | Conductivity with spring temper |
Monthly supply from Rayong, group as backup
Appliance volume is judged on whether the local plant can keep supplying month after month, not on a headline capacity number.
- AOFENG SPRING (THAILAND), Rayong — forming, heat treatment, finishing and inspection for standard parts; monthly replenishment and small urgent batches, with volume supply also run here. Equipment is added when the order is stable.
- Guangdong Aojin Precision Technology, Zhaoqing — 80,000 m² and 600+ production machines, as capacity backup and for ultra-fine wire or dedicated lines.
- Quotation — by part number. Volume is scheduled in Rayong first; any group-made part states its origin on the quotation.
Local supply is the point
When appliance volume rises, the first question is whether the local plant can keep up. Rayong already supplies monthly production batches; when the order is stable we add equipment there, with the group plant behind it as backup. The goods do not cross a sea to reach your line.
Families used in appliances
Appliance spring questions
Can you supply a family of part numbers on one schedule?
Yes. Send the part-number list with monthly quantities. We quote the family together and schedule the shipments so the line receives a complete set rather than separate deliveries.
How do you keep batch-to-batch feel consistent?
Wire lot, setup parameters, first-piece approval and sample load checks are recorded by part number. A lot number links the finished parts back to the wire, machine and inspection record.
Do you hold stock for monthly replenishment?
Common wire grades are held in stock. Finished-goods stocking is agreed per program, based on usage and replenishment frequency.
Which materials are usual for wet appliance parts?
SUS304 stainless is the usual starting point where corrosion resistance matters. SWP-B and 65Mn are used where strength and cost dominate. The final choice follows the drawing and the environment.
Can you match a part we already buy from another supplier?
Yes. Send the drawing and a current sample; we reproduce the geometry, material, finish and inspection standard before running a trial batch.
Do you offer salt spray testing?
Yes, for plated and coated parts. The test duration and acceptance criterion are agreed at RFQ.
Send the part list, get a family quote
Drawings or samples, monthly quantities and the delivery address are enough to start. We will come back with the parts we can run in Rayong, the material plan and the next step.
AOFENG SPRING (THAILAND) · Rayong, Thailand