Chamfer (assembly and safety edge)
Used to remove sharp edges and improve assembly introduction and feel; it is recommended to clarify chamfering requirements for boundaries that require frequent assembly/contact.
PBT (injection molding)
PBT is a common engineering plastic option in injection molding scenarios, suitable for your Cost, appearance and performance Make a balance between them.
Quote checklist: Upload your 3D model and, when available, a 2D drawing. Identify the required process, material, quantity, critical dimensions, finish, appearance standard, and target delivery date.
Key Material and Manufacturing Parameters
Engineering note: Values below are typical reference ranges. Final manufacturability, tolerances, material condition, surface finish, cost, and lead time depend on the drawing, geometry, quantity, and selected process.
Upload CAD files and mark critical features for an engineering review before production.
| Process | Injection Molding |
|---|---|
| Material | PBT (polybutylene terephthalate) |
| Accuracy | ±0.2 mm |
| Minimum wall thickness | 1.0mm |
| Service temperature | 300-600℃ |
| Tensile strength | 450-1100MPa |
| Density | 7.7-8.5 g/cm³ |
| Requirements tag | Low cost general parts/electrical insulation |
| Finishing | Chamfering, grinding, bonding, screen printing, laser engraving |
| Typical lead time | Related to structure, mold plan, quantity and finishing; clear delivery and expedited options will be given after uploading the file |
Finishing
Sanding (appearance and burr control)
Used to improve local burrs and improve appearance consistency; if it is the appearance surface/visible surface, please define the appearance standard in the remarks.
Bonding (piece combination solution)
Optional when the structure needs to be divided into parts or subsequently assembled and fixed; it is recommended to indicate the bonding surface and assembly datum in the drawings/notes.
Screen printing (logo and scale)
Suitable for logos, scales and graphic information; it is recommended to provide vector files and location and size instructions for quick confirmation.
Laser engraving (durable marking)
Suitable for durable markings such as QR codes, serial numbers, model identifications; please mark the location, size and content rules.
Why Choose PBT (Injection Molding)
Batch consistency is more stable
Injection molding is more suitable for batch delivery and consistency control of repeated parts, and is suitable for stable supply and mass production rhythm.
More pragmatic towards general functional parts
It is easier to strike a balance between cost and performance, suitable for injection molded parts that you need to be "sufficient and stable".
Electrical insulation application friendly
Applicable to electrical insulation structural parts and related components; if there are any standards/test requirements, please indicate in the remarks.
Logo and appearance processing is easy
Supports screen printing and laser engraving, making it easy to make brand/model/traceability markings; the exterior surface can be polished and chamfered to improve consistency.
Recommended Applications
- Electrical insulation parts: Requires insulation properties and stable batch delivery
- Universal functional parts: Want to strike a balance between cost, appearance and performance
- Labeling requirements: Screen printing/laser engraving is required for model, scale, and traceability markings
- Small and medium batch to mass production: Hope to achieve more stable unit cost and consistency through injection molding
It is not recommended to use it directly (it is recommended to change materials/processes)
- Strength/temperature resistance/wear resistance are the first priority: It is recommended to upgrade the material system or evaluate other process routes
- The structure is extremely thin or very difficult to fill: It is recommended to do DFM first, and adjust the structure and gate/parting plan if necessary.
- High requirements for appearance and texture: It is recommended to clarify texture and appearance standards, and evaluate mold and finishing combination options
- Rapid iteration of prototypes and frequent revisions: You can consider CNC/3D printing for verification first, and then switch to injection molding after confirmation.
Design and DFM Guidelines
- Wall thickness and molding stability: Try to keep the wall thickness as uniform as possible to avoid shrinkage/deformation caused by sudden changes in thickness; use ribs instead of solid thickening when necessary.
- Thin wall and long flow channel: Thin walls, long filling distances and sharp corner details will significantly increase the risk; it is recommended to do DFM in advance and confirm the gate and parting ideas with the engineer.
- Hole location and assembly: It is recommended to mark tolerances in 2D drawings for key holes/positioning datums; it is recommended to reserve processing/correction strategies or clarify allowable deviations for assembly mating holes.
- Buckle and small structure: For structures such as buckles and slender cantilevers, it is recommended to add rounded corner transitions and reduce stress concentration; if repeated assembly is required, please note the usage conditions.
- Logo and appearance: For screen printing/laser engraving, please provide vector files and location dimensions; for appearance, please define acceptable standards for weld lines, gate marks, and slight flow marks.