China Washing Machine & Air Conditioner Mold Supplier | High-Quality Factory for Home Appliance Components
Technical Specifications
| Parameter | Specification |
| 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
| Category | Options |
| 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 injection molds with dimensions up to 3,200 × 1,800 × 1,600mm, suitable for large home appliance components like washing machine drums and air conditioner housings.
What types of mold steel do you offer for customization?
Depending on your specific application and expected mold life, we offer high-grade mold steels including S136, 718H, P20, and SKD11.
How do you control warpage and sink marks on large plastic components?
During our Step 2 Structural DFM analysis, we carefully review thick-section areas for sink mark control, design optimal rib structures to prevent warpage, and optimize cooling channels to ensure uniform heat dissipation across large cavities.
What quality documentation do you provide with the molds?
Every mold delivery includes a complete documentation package consisting of a First Article Inspection (FAI) report, a full Coordinate Measuring Machine (CMM) dimensional inspection report, and material certificates for the mold steel blocks.
What is the expected life cycle of your injection molds?
Our molds are engineered for high durability, with an expected mold life ranging from 100,000 to over 1,000,000+ shots depending on the steel grade and operational maintenance.