China Suppliers Factory for High-Quality Washing Machine & Air Conditioner Injection Molds
Technical Specifications
| Product Application | Washing machine, air conditioner components |
| Mold Type | Single-cavity / multi-cavity injection mold |
| Mold Size | Up to 3,200 × 1,800 × 1,600mm |
| Mold Steel | S136, 718H, P20 (per requirement) |
| Cavity Layout | Single-cavity to multi-cavity |
| Surface Finish | Automotive-grade to standard appliance finish |
| Expected Mold Life | 100,000 – 1,000,000+ shots |
| Tolerance | ±0.01mm |
| Gate System | Hot runner, submarine gate, side gate |
| Quality Documentation | FAI report, CMM report, material certificate |
Technical Process
Step 1
Inquiry & Large-Component Drawing Review
Customer submits large-format home appliance component drawings (washing machine drum components, air conditioner housings, etc.). Jinlong reviews design for large-component manufacturability and provides a quotation within 3 business days.
Step 2
Structural DFM for Large Components
Jinlong conducts a structural-focused DFM analysis — reviewing thick-section areas for sink mark control, rib design for warpage prevention, large-surface flatness requirements, and cooling channel optimization for large mold sizes.
Step 3
Large-Format Mold Design
Mold designs developed for large-component production using SolidWorks, Pro/ENGINEER, UG, or CATIA. Special attention to cooling channel layout for uniform heat dissipation across large cavities, ejection system design for large surface areas, and hot runner manifold sizing for proper flow distribution. Designs submitted for approval.
Step 4
Large-Capacity Precision Machining
Molds machined using Jinlong's large-format CNC equipment — capable of machining cavity and core blocks up to 3,200 × 1,800 × 1,600mm. High-speed machining for large flat surfaces, EDM for intricate features, and precision grinding for critical sealing and parting surfaces.
Step 5
Large-Tonnage Trial & High-Volume Qualification
Mold trials conducted on Jinlong's large-tonnage injection machines (matching component size requirements). Samples evaluated for large-surface flatness, warp control, cosmetic quality on visible surfaces, and dimensional compliance. Trial samples packaged and submitted for customer approval.
Step 6
Production Qualification & Delivery
Upon sample approval, mold accepted for mass production qualification. Documentation includes material certificates for large mold steel blocks, cooling manifold specifications, and assembly drawings. Mold shipped with full documentation package.
Step 7
Volume Production Support
Long-term support for high-volume production runs, spare large-format components, and engineering modifications for design updates.
Customization Capabilities
| Mold Steel | S136, 718H, P20, SKD11 |
| Cavity Layout | Single-cavity, multi-cavity for high-volume production |
| Surface Finish | Class-A automotive-grade to standard appliance finish |
| Gate System | Hot runner, submarine gate, side gate, direct gate |
| Cooling | Standard cooling, high-efficiency channels |
| Materials | ABS, PC, PP, PA66, PC/ABS, engineering plastics |
| Size Range | Up to 3,200 × 1,800 × 1,600mm |
Quality Assurance
ISO 9001:2016 certified
Full CMM dimensional inspection with traceable records
FAI report included with every mold
Material certificates for all mold steels
Frequently Asked Questions
What is the maximum mold size you can manufacture?
We can manufacture large-format molds with sizes up to 3,200 × 1,800 × 1,600mm using our specialized large-capacity precision machining equipment.
Which mold steel options do you offer?
We provide high-quality mold steel options including S136, 718H, P20, and SKD11, selected based on your specific production demands and mold life requirements.
How do you ensure the quality of the molds?
We are ISO 9001:2016 certified. Every mold is verified using full CMM dimensional inspections with traceable records, and we deliver FAI reports and material certificates with each project.
What gate systems and surface finishes are available?
We support multiple gate systems including hot runner, submarine gate, side gate, and direct gate. Our surface finishes range from Class-A automotive-grade to standard appliance finishes.
What is your technical process for custom mold manufacturing?
Our structured process includes 7 key steps: Inquiry & Review, Structural DFM Analysis, Large-Format Mold Design, Precision Machining, Trial & Qualification, Production Qualification & Delivery, and ongoing Volume Production Support.