jacob@gainpower-mfg.com
GPMFG
Top Mold / tooling manufacturer in China
- Mold follow,Mold Design, Mold Manufacturing
- Prototype Molds,low life Molds up to 1 Million-shots Molds
- Single Cavity Molds, Multi Cavity Molds,Family Molds
- Plastic Injection Molds, Die Casting Molds
Beginning of project
Mold Design&Project Management
GPMFG provides complete Engineering support from Tooling/Mold Development,Manufactring,Test,Trial production and after sales
- Products/Parts Analysis
- Products/Parts Optimization
- Mold Flow Analysis
- DFM(Design for Manufacturing)
- Tooling/Molds 3D design
- Weekly Progress Report
- Steel Certificate&Heat Treatment Report
- Full Tooling/Molds Test report
Engineer Software
- Auto CAD
- Unigraphics NX
- Pro-Engineer
- Autodesk Moldflow
- Solidworks
- PowerMilll
Usual drawing format:stp,step,x_t
Products Analysis& Optimization
- Plastic Material Analysis
- Draft Angle Analysis
- Wall thickness Analysis
- Part Feature optimization
Mold Flow Analysis
- Runner Layout
- Filling Time/Pressure/Temperature
- Air traps
- Sink Mark
- Weld Mark
- Warpage -XYZ Deflection
DFM(Design for Manufacturing)
- Parts basical information
- Parts Optimization advice
- Surface finish detail
- Parting lines detail
- Mold Layout&Idea detail
Tooling/Molds 3D design
- Mold drawing 2D
- Mold drawing 3D
- Mold BOM
- Mold Components Drawing
- Wire-cut&EDM drawing
Weekly Progress Report
- Mold Design Progress
- Mold Steel Progress with pictures
- Mold components Progress with pictures
- Mold Machining Progress with pictures
- Mold Assembly Progress with pictures
Certificate
- Plastic Material ROHS report
- Steel Certificate
- Mold components Progress with pictures
- Heat Treatment Report
Full Tooling/Molds Test report
- Injection parameter report
- Mold Test video
- Product FAI report
- Injection Filling balance report
- Mold fitting report
Customized Tooling/Molds For Your Industries
We Understand More About The Needs Of The Industry, You Just Need To Provide The Design.
Molds for Plastic Injection Molding
Single Cavity Mold
Single cavity molds usually are applied for small or medium mass production.Each injection produces only one part,so the mold cost is low but the production cost is high. Lead-time: around 3-5 weeks.
Multi Cavity Mold
Multi-cavity molds usually are applied for big mass production.Each injection produces several same parts,so the mold cost is high but the production cost is low. Lead-time: around 4-6 weeks.
Stack Mold
Our stack mold tooling is designed to increase your molding output and minimize part costs, with options for both equal and varying cavity numbers in each parting surface. Lead-time: around 4-6 weeks.
Family Mold
Family molds are a type of multi-cavity mold that allows for the production of different parts with varying shapes, sizes, and features in a single molding cycle. By using a family mold, we can increase production efficiency and reduce costs, as they can produce multiple parts simultaneously with one mold.
Perfume bottle cover Tooling/Mold
Industry: Cosmetic product packing
Mold Base steel:P20
Mold Cavity Steel :1.2083(HRC48-52)
Cavity: 8 Cavities
Mold Life:1,000,000 shot
Surface Finish:Mirror Polish
Mold Feature: Double ejection
Food Container Tooling/Mold
Industry: Foods packing
Mold Base steel:P20
Mold Cavity Steel :P20,BE-CU
Cavity: 1*1
Mold Life:1,000,000 shot
Surface Finish: Standard Polish
Mold Feature: Fast cooling for molding
Controler Housing Tooling/Mold
Industry: Electronic & Electrical
Mold Base steel: 1050
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1*1
Mold Life:500,000 shot
Surface Finish: MT-11010
Mold Feature: YUDO hot nozzle
Electrical housing Tooling/Mold
Industry: Electronic & Electrical
Mold Base steel:S50C
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1*1
Mold Life:500,000 shot
Surface Finish: MT-11010
Mold Feature: Colored Nylong
Medical Tooling/Mold
Industry: Medical device
Mold Base steel:S50C
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1+1
Mold Life:500,000 shot
Surface Finish: VDI-27
Mold Feature: Family mold
Medical Tooling/Mold
Industry: Medical device
Mold Base steel:P20
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1*4
Mold Life:1,000,000 shot
Surface Finish: Mirror Polish
Mold Feature: HASCO hot nozzle
T-branch pipe Tooling/Mold
Industry: Household
Mold Base steel:P20
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1*1
Mold Life:500,000 shot
Surface Finish: Mirror Polish
Mold Feature: Unscrewing movement
U pipe Tooling/Mold
Industry: Household
Mold Base steel:P20
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1*1
Mold Life:500,000 shot
Surface Finish: Mirror Polish
Mold Feature: Arc slider
Oil pipe Tooling/Mold
Industry: Automobile
Mold Base steel: S50C
Mold Cavity Steel :1.2344(HRC48-52)
Cavity: 1*2
Mold Life:500,000 shot
Surface Finish: MT-11010
Mold Feature: Multiple Sliders
Automobile Tooling/Mold
Industry: Automobile
Mold Base steel:P20
Mold Cavity Steel :1.2343(HRC48-52)
Cavity: 1*1
Mold Life:500,000 shot
Surface Finish: Mirror Polish
Mold Feature: Synventive hot nozzle
Gallery of Molds
Finished Products Center
Tooling Capabilities & Processes In-house
High Speed CNC Machine
By adopting high-speed CNC machines, we have drastically reduced both setup and machining times while enhancing the quality and consistency of our produced tooling. The utilization of this advanced technology offers a remarkable advantage: the ability to effortlessly manufacture intricate shapes within a single setup.
Precision EDM Machine
The major benefit of using a Precision EDM Machine is its ability to accurately produce intricate shapes and contours in a wide range of materials. Our investment in advanced Precision EDM technology has resulted in significant improvements in setup times and machining speeds, as well as exceptional levels of precision and consistency in the tooling we produce.
Wire Cut Machine
The utilization of wire-cutting technology offers a significant advantage: the ability to seamlessly manufacture complex shapes in a single setup. With wire cutting machines, we can effortlessly achieve high precision and efficiency, resulting in increased productivity and customer satisfaction.
Gun Drilling Mahine
With our state-of-the-art gun drilling technology, we can drill holes up to several meters in length without the need for frequent tool changes or interruptions. This translates to faster turnaround times and higher productivity. Our investment in gun drilling technology has also resulted in improved surface finish and reduced burrs, resulting in higher quality parts.
DFM and mold design
Injection mold design begins with a DFM program (Design for Manufacturability), presenting crucial mold design information such as dimensions, cavity layout, runner system, pouring method, parting line, ejection method, mechanical design, accessories, steel selection, and cooling design. After customer approval, detailed 3D design and NC programming are carried out, taking 3-5 days for a complete design. Complex projects may require mold flow analysis or frequent part design updates, prolonging the process.
Planning, Mold base, steel and accessories preparation
Upon mold design approval, our project manager will create a detailed project schedule covering the entire process until T1 sampling. Your assigned project manager at GPMFG will provide weekly updates. Mold base and steel can be ordered immediately after design approval, while accessories like the hot runner system may have longer lead times. It is crucial to closely monitor and track these procedures to avoid delays in subsequent steps.
Rough machine
In order to obtain the desired rough shape or cavity/core, the steel must undergo initial sizing, milling, drilling, and lathe processes. Typically, a steel thickness of 0.15-0.3 mm is retained for precision machining in subsequent stages.
Heat treatment
Heat treatment is a critical process following rough machining, as it serves two key purposes: achieving specific hardness levels and attaining internal balance. For instance, materials like 1.2343 and 1.2344 typically require hardening to a range of HRC48-52.
CNC precision machining
CNC precision machining involves meticulous attention to detail. Unlike rough machining, the CNC process operates at a slower pace with reduced cutting amounts. This method produces finely machined mold inserts with a smooth, glossy finish and accurate dimensions, achieving a maximum tolerance of 0.01-0.005mm.
Wire cut and EDM
Wire cutting is specifically used for various through holes (ejector pin holes, lifters, inserts), while EDM is suitable for features that cannot be machined by CNC due to depth or narrowness. To minimize the time and cost associated with EDM, experienced designers optimize mold design by dividing the main insert into multiple sub-inserts. This allows for direct CNC machining of the inserts, reducing the reliance on wire cutting and EDM processes.
Surface Finish and Fitting
Once all the components have been completed and prepared, our engineers gather them together and expertly assemble them according to the design drawing. This crucial task heavily relies on their vast experience and exceptional skills. In some instances, certain parts may require polishing or even reworking in order to achieve a perfect fit. Moreover, the core or cavity often have specific surface finish requirements, such as texture, polish, or engraving, which are meticulously addressed.
Mold trial
When everything is prepared, we will put the mold on the injection molding machine for a test. Make sure you clearly state your requirements, how many plastic parts you need as samples, instruct the moldmaker to use the correct resin, and that injection parameters and measurement reports should be provided with the molded plastic parts.
Mold and part inspection
Mold inspection
- All of sliders or lifters can move properly
- Mold cavity and core move smoothly without interference
- No burrs or sharp corners on the mold base
- All of cooling outlets are equipped with proper adapters
- Mold core, cavity, and mold base are sprayed with rusty-protection oil
- Mold information brand is firmly fastened
parts inspection
- Part material is in accordance with customer’s definition
- Part color is correctly made according to pantone number
- All of part features are correctly and completely made
- No flash, deformation, shrinkage, crack, or other obvious appearance defects
- All of critical dimension and control number must be measured and qualified by SPC process.
- Part assembly test with other components from the whole system
- Drop test, vibration test, salt-spray, rubbing test
About GPMFG
GainPower-MFG is a top mold manufacturer in China that can produce a wide range of mold types. Within our production facility we have 27 mold making machines ranging in size from 50 tons to 1300 tons. These include CNC, EDM, wire cutting, lathe, CMM, milling, hot stamping, pad printing and screen printing units.
From insert molding and overmolding to spin-on molds, GPMFG can mass produce the molds you need for your project.
- Molds suitable for presses ranging from 50 to 1300T
- Up to 32-cavity molds
- Molds classified from Class 101 to Class 105
- Prototype molding, 2K molding, 3 shot molding, insert & overmolding
- In-house tool welding
- Tolerance: ±0.005mm
Workshop Views
CNC workshop
EDM workshop
Wire-cut workshop
Grinding workshop
Quality Department
Assembly Department
Selection of Mold Steel
| Component Name | Steel&Hardness | Equivalent Steel | Mold Life(Shot) | Price Index | Applications |
| Mold base | 1050 | 1730 | 500,000 | 1 | Plastic injection mold |
| LKM P20 | 2311 | 1,000,000 | 1.35 | Plastic injection mold | |
| LKM P20 | 2311 | 500,000 | 1.35 | Die-casting mold | |
| H13 (HRC 44-46) | 2344(HRC44-46)/SKD61 | 1,000,000 | 2.1 | Plastic injection mold | |
| Mold Cavity/Core | P20 | 2311/718H/2378 | 200,000 | 1 | Plastic injection mold |
| P20H(HB330-370) | 2738H/718HH/NAK80 | 300,000 | 1.3 | Plastic injection mold | |
| S136H(HB290-330) | 2083H/420H/2316H | 500,000 | 2.2 | Plastic injection mold | |
| S-136 (HRC 48-52) | 2083/420ESR/2316 | 1,000,000 | 3.2 | Plastic injection mold | |
| H13 (HRC 48-52) | 2344/2343/SKD61 | 1,000,000 | 3.2 | Plastic injection mold | |
| H13 (HRC 48-52) | 2344/2343/SKD61 | 80-150K | 3.2 | Die-casting mold | |
| 8407 (HRC 50-52) | 8418 | 150-300K | 5 | Die-casting mold |
Research
1. Injection Mold Processing Capabilities
Our plastic injection molds are fabricated to meet strict international standards, ensuring exceptional quality for every project, whether it’s a one-off or a large production run. We are committed to providing our clients with reliable and long-lasting mold tools that you can trust.
Mold Class | Purpose | Shot Life | Tolerance | Cost | Lead Time |
Class 105 | Prototype Testing | Under 500 cycles | ± 0.02mm | $ | 7-10 days |
Class 104 | Low-volume Production | Under 100.000 cycles | ± 0.02mm | $$$ | 10-15 days |
Class 103 | Low-volume Production | Under 500.000 cycles | ± 0.02mm | $$$$ | 10-15 days |
Class 102 | Medium-volume Production | Medium to high production | ± 0.02mm | $$$$$ | 10-15 days |
Class 101 | High-volume Production | Over 1,000,000 cycles | ± 0.02mm | $$$$$$ | 10-18 days |
2. Primary factors influencing the cost of mold manufacturing
we understand that saving our client’s budget and increasing their profit is crucial. Our commitment to quality, expertise, and efficiency allow us to deliver high-quality molds that save our clients money while increasing your profit margins
The cost of Engineering
10-15% cost is mold design and project management
Mold steel cost
15-45% cost is the mold base and the mold cavity steel.Smaller mold the steel cost percent will be higher
Machining cost
This depend on the complexity of the product and the mold accuracy.Machining cost would be higher for more complex mold and more accuracy mold
Mold components standard
Original DME,HASCO Mold base and Mold components would be higher than Chinese standard or equivalent components made in China
Mold life
Longer mold life,we must use better quality steel and machining mold with higher accuracy.The cost would be higher
3. Injection Mold Processing Capabilities
Our plastic injection molds are fabricated to meet strict international standards, ensuring exceptional quality for every project, whether it’s a one-off or a large production run. We are committed to providing our clients with reliable and long-lasting mold tools that you can trust.
Mold Class | Purpose | Shot Life | Tolerance | Cost | Lead Time |
Class 105 | Prototype Testing | Under 500 cycles | ± 0.02mm | $ | 7-10 days |
Class 104 | Low-volume Production | Under 100.000 cycles | ± 0.02mm | $$$ | 10-15 days |
Class 103 | Low-volume Production | Under 500.000 cycles | ± 0.02mm | $$$$ | 10-15 days |
Class 102 | Medium-volume Production | Medium to high production | ± 0.02mm | $$$$$ | 10-15 days |
Class 101 | High-volume Production | Over 1,000,000 cycles | ± 0.02mm | $$$$$$ | 10-18 days |
Working with GPMFG is not just a part, it's a guarantee of long-term profitability.
GPMFG is more than just a partner, it’s a promise of lasting success. Our collaborative approach to manufacturing ensures that your products are made with the highest quality standards and optimized for maximum profitability. With GPMFG, you can trust that your business will thrive for years to come.
Design & Solution
We design and build multi-component, stack molds, thin / thick wall molds, high cavitation high performance molds, high precision molds and metal insert molds. Our talented team will provide unique solutions for your projects.
- Innovative Tooling Concept
- Robust Design
- Optimized Cooling
- Fast Cycle
- Easy for Maintenance
Equipment & Accuracy
We are constantly refining our experience and equipment, updating not only technology but also expensive equipment, with tolerances of ±0.005mm.
- 150T Spotting Machine
- 150T Nice Fitting Machine
- Injection Mold Machine
- CNC Machine
- Grinding Machines
Quality & Reporting
GPMFG defines quality as total customer satisfaction. This drives us to settle for nothing less than for excellence in all aspects of our business. We supply the following documents to our customers.
- Mold Base Certificate
- Steel Certificate
- Heat Treatment Certificate
- Mold Trial Report
- Sample Inspection Report
Transportation & Safety
Our focus is on ensuring that your products are well-maintained. We take great care in handling the transportation and packaging of mold molding to ensure that your products are delivered in excellent condition.
- Anti-rust spray
- Vacuum package
- Strong Non-solid wood crate
Real Customer Feedback
Rick M.
The most outstanding partner for custom machining is GPMFG. They have provided tremendous support in delivering high-quality prototype parts with impressive turnaround time.
Justin L.
Our trusted strategic partner and good friend, GPMFG, boasts exceptional manufacturing technologies, particularly in the realm of machining, that consistently deliver top-quality parts to our company.
FAQs for Mold Manufacturing
What information should be provided to obtain the quotation?
Formal product 3D drawing
Formal product 2D drawing with Tolerance
Parts mateirla
Molds Cavity number if exporting molds
Injection point type if exporting molds
Molds cavity steel if exporting molds
Molds frame steel if exporting molds
Molds life if exporting molds，shot
What’s the process for injection mold making?
In order to meet the requirements of customers, GP MFG designs molds and manufacturing processes through analysis and strict molding process, to ensure the perfect increase in the production of molds.
Step 1: Provide DFM report and mold flow analysis report for customer confirmation
Step 2: Provide design mold drawings for customer confirmation
Step 3: Provide reconfirmation of the drawing after modification of the mold design
Step 4: After the drawing is confirmed Ok, start to arrange the mold manufacturing
Step 5: Provide weekly tooling progress report
Step 6: Send out T1 sample until the mold is confirmed Ok
Can you customize the mold according to my sample?
Yes.
- If accurate product drawing is available,attach 2D product drawing with tolerance and 3D product drawing.
- If you have accurate sample, if there are no drawings or only sketches, please provide the final sample,we will arrange to make a DFM report to send to you for confirmation, and then design the mold.
How much does a mold cost？
The cost of the mold is affected by the size and material of the product,the complexity of the structure and the quantity of production,and the surface requirements, and so on.Because of the great difference,the price of the mold can not be estimated.If you want to know the cost of mold precision,please send email to us.
How long does it take to make a mold?
It depends on the complexity of the product structure,the specific delivery time will be indicated on the quotation sheet.The following delivery dates are for reference:
20-30 days for molds less than 1 ton
30-45 days for molds from 1 ton to 3 tons
45-60 days for molds from 3 ton to 5tons
How long is the mold life? How to protect?
In the mold industry,the life grade of the mold is divided into:100 thousand times,300 thousand times,500 thousand times and 1 million times.The die life is related to the die steel,which is selected according to the plastic material,the surface treatment of the parts and the potential production quantity.
Mold exported to customers in your country or region,in the correct use of die mold and regular maintenance,the service life of the actual can completely meet the design service life,a failure if the life of the mold in a reasonable period,our project engineer will evaluate the replacement parts or mold repair solution,will arrange manufacture and send again.
Facilitate On-Demand Manufacturing for Quicker and Simpler Results.
Once you are prepared to commence your upcoming venture, you can effortlessly upload your 2D/3D CAD design files and our team of engineers will promptly provide you with a quotation within 24 hours.
- Free Mold Flow Analysis
- Save 50-70% costs
- 40% reduction in delivery time
- Prototype manufacturing
- 100% tool ownership.
- Guaranteed after-sales service
- Timely feedback on project progress
- Project evaluation and professional advice
Jacob Deng
- jacob@gainpower-mfg.com
- +86 137 1306 1055
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