The Cooling-ThermalVacuum Sintering Furnace is engineered for the copper powder sintering process in heat pipe manufacturing — the critical step that bonds the copper wick structure to the inner wall of the heat pipe tube. Operating at temperatures up to 950-1000°C with a working pressure of 20 tons and a vacuum degree of 10-1 torr, this furnace delivers the precise thermal and pressure conditions required to produce a high-density, high-conductivity copper sintered wick with consistent quality across every batch.
With an effective chamber size of 400 x 400 x 650mm, water-cooled temperature reduction, and a full HMI touchscreen for pressure and temperature parameter control, the vacuum sintering furnace is designed for production environments where wick quality directly determines heat pipe thermal performance.
Key Specifications
| Specification | Details |
| Operating Temperature | 850°C (standard) / up to 950-1000°C (sintering cycle) |
| Effective Chamber Size | 400 x 400 x 650 mm |
| Vacuum Degree | 10-1 torr |
| Working Pressure | 20 tons |
| Working Cycle | Approximately 10 hours per furnace |
| Cooling Method | Water-cooled |
| HMI Control | Pressure and temperature parameter adjustment via touchscreen |
| Voltage | 380V x 3-phase |
Where the Vacuum Sintering Furnace Is Used — Applications & Industries
The vacuum sintering furnace is a core piece of equipment in the heat pipe manufacturing process. It is specifically used for the copper powder sintering step — where loose copper powder filled into the heat pipe tube is bonded to the tube wall under high temperature and vacuum pressure to form the capillary wick structure that drives fluid movement in the finished heat pipe.
It is widely used in the following production environments:
- Heat pipe manufacturers — sintering copper powder wick structures for standard round heat pipes (D3-D12), flat heat pipes, and U-shaped heat pipes used in CPU coolers, server heat sinks, and laptop thermal modules
- Vapor chamber (VC) production facilities — sintering copper sintered wick layers inside vapor chamber cavities for high-power chip cooling in AI servers, graphics cards, and data center hardware
- New energy & EV thermal management manufacturers — producing high-performance sintered heat pipes for battery pack cooling systems and power electronics thermal management
- Aerospace & industrial electronics manufacturers — sintering precision copper wicks for heat pipes used in high-reliability, high-performance thermal control applications
- Contract heat pipe manufacturers — batch sintering of multiple product specifications within a single furnace cycle using adjustable pressure and temperature parameters
If your heat pipe production line requires a copper powder sintering oven capable of operating at 850-1000°C with 20-ton pressing pressure and vacuum conditions, the Cooling-Thermal vacuum sintering furnace is built for your process.
Why Choose Cooling-Thermal's Vacuum Sintering Furnace ?
| Cooling-Thermal Vacuum Sintering Furnace | Typical Market Alternative | |
| Operating temperature | 850-1000°C, fully controllable | Fixed or limited range |
| Working pressure | 20 tons | Often lower or unspecified |
| Vacuum degree | 10-1 torr, stable cycle | Variable, less consistent |
| Cooling method | Water-cooled, faster turnaround | Air-cooled, slower cycle |
| Cycle time | ~10 hours per furnace | Often longer |
| HMI control | Full touchscreen parameter control | Manual or basic PLC |
| Customization | OEM/ODM available | Standard spec only |
| Sample testing | Available before order | Rarely offered |
| After-sales support | Dedicated 5-person maintenance team | Limited |
Cooling-Thermal has designed and delivered vacuum sintering furnaces to heat pipe manufacturers including Nidec (20 production lines), Foxconn (25 production lines), and Viessmann — providing bell jar sintering furnaces and diffusion bonding furnaces for copper powder wick and VC sintering applications. Every furnace we deliver is built, tested, and validated in-house at our Kunshan factory before shipment.
Delivery, Installation & After-Sales Support for Your Sintering Furnace
Factory Acceptance Test (FAT) Before Shipment
Every vacuum sintering furnace undergoes a full Factory Acceptance Test at our Kunshan facility before dispatch. All operating parameters — temperature uniformity, vacuum degree achievement, working pressure, HMI functionality, and cooling system performance — are verified against your confirmed specifications. You are welcome to attend the FAT in person or via live video link.
On-Site Installation & Commissioning
Our engineers travel to your production facility to handle furnace installation, connection of vacuum and cooling systems, HMI parameter programming, and commissioning. We run a full sintering trial cycle with your tube specifications before signing off on the installation — ensuring the furnace is producing to your required wick quality standard from day one.
Process Parameter Setup & Operator Training
We provide hands-on operator training covering sintering cycle setup, HMI parameter adjustment (temperature ramp rates, hold temperatures, pressure settings), routine maintenance, and troubleshooting procedures. Complete technical documentation is provided in English.
Long-Term Maintenance Support
Our dedicated 5-person maintenance team provides remote support and on-site visits for the life of the equipment. Heating element replacement, vacuum system maintenance, and cooling circuit servicing are all covered. Most technical issues are resolved remotely within 24 hours — minimising production downtime.
Export & Shipping
We handle full export documentation and support FOB, CIF, and DDP shipping terms. Our vacuum sintering furnaces have been exported to Japan, South Korea, Taiwan, India, Turkey, and Vietnam. Our team is experienced with international shipping requirements for heavy industrial equipment, including customs documentation and in-country installation coordination.
Complete Your Heat Pipe Production Line — Related Equipment
The vacuum sintering furnace is a critical step in a complete heat pipe manufacturing process. Cooling-Thermal supplies all upstream and downstream equipment as a single-source automation partner:
| Production Step | Equipment |
| Capillary structure filling | Copper Powder Filling Machine (4,000 pcs/hr) |
| Copper sintering | Vacuum Sintering Furnace — sinters copper powder wick to tube wall |
| Vacuum processing | Copper Heat Pipe Vacuum Degassing Machine (300 pcs/hr) |
| Water injection | Automatic Water Injection Machine (+/-0.05% accuracy) |
| Tube sealing | Automatic Welder (550 pcs/hr) |
| Tube forming | Automatic Shrinking Tube Machine (500 pcs/hr, D3-D8) |
| Pipe shaping | Automatic Heat Pipe Bender (2D & 3D, 99% yield rate) |
| Flattening | Hot Press Machine (+/-0.05mm pressing tolerance) |
| Quality testing | Thermal Performance Test Bench |
All equipment is available as standalone units or as part of an integrated heat pipe production line. Contact our engineering team to discuss the right equipment configuration for your tube specifications, output targets, and production floor layout.
