Zhuzhou Ruideer Metallurgy Equipment Manufacturing Co.,Ltd
Swiss Precision, German Quality, Chinese Intelligent Manufacturing
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This sintering furnace is applicable for and not limited to hard alloy products, high magnetic products, cermets products, ceramics products.
In tungsten carbide, carbon atoms are embedded in the interstices of the tungsten metal crystal lattice without damaging the original metal crystal lattice, forming an interstitial solid solution, so it is also called an interstitial (or intercalation) compound. Tungsten carbide can be prepared by heating a mixture of tungsten and carbon at high temperature. The presence of hydrogen or hydrocarbon can accelerate the reaction. If tungsten is used for the preparation of oxygen-containing compounds, the product must finally be vacuum-treated at 1500 ° C to remove the carbon oxides.
Two basic methods for sintering cemented carbides: one is hydrogen sintering-one controls the component composition through the kinetics of phase reaction in hydrogen and atmospheric pressure; the other is vacuum sintering,which applies vacuum environment or reducing ambient gas pressure controls the composition of the cemented carbide by slowing the reaction kinetics. Vacuum sintering has a wider range of industrial applications. Sometimes, sintering hot isostatic pressing and hot isostatic pressing are also used for the material. These technologies have an important impact on the production of cemented carbide.
Hydrogen sintering: Hydrogen is a reduction atmosphere, but when hydrogen reacts with the sintering furnace wall or supporting device, it will change other components and provide a suitable carbonization potential to maintain the thermodynamic equilibrium with the cemented carbide. In traditional cemented carbide sintering, the carbon content of carbides in the mixture should be adjusted to a theoretical value, and this value should be maintained throughout the entire hydrogen sintering process. For example, when sintering 94WC-6C0 cemented carbide, the carbon content is 5.70 to 5.80% (mass fraction) when entering the furnace, and it should be maintained at 5.76 + 0. 4% when the furnace is released.
| Furnace Type | Horizontal type(Max Working pressure:58bar/98bar) | |||
| RDE-3312-N | RDE-4412-N | RDE-5512-N | RDE-5518-N | |
| Usable Space (W*H*L) | 300*300*1200mm | 400*400*1200mm | 500*500*1200mm | 500*500*1800mm |
| Max.Charge Load | 300kg | 500kg | 1200kg | 1500kg |
| Power Rating | 320KVA | 320KVA | 430KVA | 600KVA |
| Heating Zone | 2/3 Zones | 3 Zones | 3 Zones | 3 /4 Zones |
| Cooling time | ≤5h | ≤6h | ≤7h | ≤8h |
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Empty furnace, cooling from sintering temperature 2100℃ to 100℃. (water temperature≤26℃, water pressure 2-3bar, 55bar(95bar)≤Ar pressure≤58bar(98bar). |
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| Service Life | 20years/6000furnace cycles | |||
| Max. Working Temp | 1800℃ | |||
| Temperature Measurement | Special design High temperature W-Re5/26 Thermocouple | |||
| Max Vacuum Degree | 1Pa (under cold, empty, dry furnace) | |||
| Leakage Rate | 3Pa/h (Average value under cold, empty, dry furnace) | |||
| Wax Collection | ≥98%(Argon gas negative dewaxing, 3-time average value) | |||
| Forming Agent | Paraffin,PEG,Rubber,(C12H22O5)n etc. | |||
| Input gas | N2, Ar, H2 | |||
| Functions |
Automatic Positive Pressure, Negative Pressure Leak Detection Ar Negative Pressure Dewaxing/H2 Micro Positive Pressure Dewaxing Vacuum Sintering Partial Pressure Sintering (Static, Dynamic) Pressure Sintering Rapid Cooling Fully-automatic control & Safety interlock& Breakpoint continuing heating & Wireless remote control& Self-diagnosis |
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• Design standards
The equipment is designed in accordance with the pressure vessel requirements of the Quality and Technical Supervision Bureau, and is qualified after pressure testing and shipped. The electrical design and construction meet national standards.
• Installation pre-test and pre-acceptance
The equipment is fully assembled in our factory, including all pipelines, vacuum pipelines, process gas pipelines, cooling water pipelines, compressed air pipelines, etc. Pre-testing can be carried out after installation. At the customer site, pipelines other than the equipment are provided by the customer. The installation also includes the connection of all cables. At the customer site, the main cable connecting the power cabinet is provided by the customer. After installation, we conduct vacuum and positive pressure leakage tests on the entire equipment, as well as mechanical and electrical function tests.
• Disassembly and transportation
The equipment will be disassembled in several large parts, packed in a standardized manner, and loaded into the transport vehicle.
• Customer site installation and commissioning
The Redel after-sales engineer will lead the team to complete commissioning, product trial burning and other work within 20 working days. The customer needs to make appropriate preparations and provide the necessary tools, such as hoisting and lifting equipment. And provide installation personnel support (it is recommended to have 1 mechanical personnel and 1 electrical personnel).
• Final acceptance
After installation and commissioning, the equipment can be finally accepted in accordance with the requirements of the technical contract.
• Training
Our after-sales engineers will provide a systematic and complete on-site training, including operation, maintenance, troubleshooting, etc.
• Technical data delivery
To ensure safe operation and equipment maintenance, the following technical data will be provided to customers:
1. Equipment installation layout
2. User manual
3. Spare parts list
4. Electrical drawings
5. Component manual
FAQ
Q: Are you a factory or trading company?
A:We are China leading high-temperature vacuum furnace manufacturer with over 10 years’ experience.
Q: Do you have customization or OEM service??
A:Yes,we have powerful R&D team and high-tech equipment.So we can not only supply the regular model,but also the customizable furnace as the repuirment of our clients.
Q:What's your advantage?
A:
l Quick response to your enquiry
l High quality control
l Stable supply chain
l Timely delivery
l Excellent after-sales service
