Chinese supplier high pressure international certificate tungsten
carbide vacuum sintering furnace
At present, Ruideer has formed two core technical systems, i.e
"high temperature & high pressure' and 'chemical vapor deposition'.
The products are widely used in industries like cemented carbide,
Si3N4, / SiC ceramic, carbon-based material, heat treatment , as well as
coatings of cuting tools, molds and semiconductor material. The
core product pressure sintering fumace has successfully gained a
significant market share in China. Additionally, products are also
sold to many countries and regions such as EU, US, Japan, etc.
It is a horizontal resistance heated furnace,which has five
pressure levels to choose: 1MPa, 2MPa, 6MPa,10MPa and 20MPa, with a maximum temperature of 1600°C. Design and production is in line with the national and
industrial standards. Functions of furnace include dewaxing,vacuum sintering,atmosphere sintering
pressure sintering and rapid cooling of which can be customized
optimally to meet individual reguirements in the production of
cemented carbide and special ceramics.
| 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 |
Empty furnace, cooling from sintering temperature 2100℃ to 100℃. (water temperature≤26℃, water pressure 2-3bar, 55bar(95bar)≤Ar
pressure≤58bar(98bar). |
| 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) |
| Input gas | N2, Ar, |
| Functions | Automatic Positive Pressure, Negative Pressure Leak Detection Vacuum Sintering Partial Pressure Sintering (Static, Dynamic) Pressure Sintering Rapid Cooling Fully-automatic control & Safety interlock& Breakpoint continuing
heating & Wireless remote control& Self-diagnosis |
Problems in the sintering process of cemented carbide tools
1. Excessive carbon in the alloy, i.e. the cobalt magnetism of the
mixture itself is high or even carburized, carbon in carbon paper
is absorbed, residual paraffin is cracked, and the insulation layer
absorbs paraffin, resulting in a high concentration of carbon
atmosphere, etc.
2. Insufficient carbon in the alloy, i.e. the cobalt magnetism of
the mixture itself is low, the pressed product is stored for too
long, the furnace leaks, the contact material is used incorrectly,
etc.
3. High concentration of carbon-containing gas enters the weak
parts of the product (the edges and corners of the product are
often low in density or have severe elastic aftereffect), and under
the contact of cobalt, a carbon precipitation reaction occurs. The
precipitated carbon destroys the continuity of the alloy, causing
the alloy to "peel"
4. The density of the pressed product is uneven; the carbon content
in different parts of the sintered body is different; the boat is
uneven, the sintering atmosphere is uneven, and the sintering
temperature is uneven
5. Overburning - the sintering temperature is too high; there are
oxides in the pressed green sheet that are difficult to reduce, and
they can only be reduced at a higher temperature after the liquid
phase appears. The pressure of the gas generated by the reduction
is greater than the resistance of the liquid phase contraction; the
debris in the pressed green sheet, such as alloy debris, iron
filings, copper wire, etc.
6. The gas generated by the reduction of oxide impurities at high
temperature or the furnace gas entering the sintered body, when the
alloy solidifies, it does not have time to escape, and it is
dispersed and remains in the alloy, and the pressure of the gas is
not enough to form bubbles and become holes
7. The gas generated by the reduction of oxide impurities at high
temperature or the furnace gas entering the sintered body, when the
alloy solidifies, it does not have time to escape, and it is
dispersed and remains in the alloy, and the pressure of the gas is
not enough to form bubbles and become holes
• 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
Are you a factory or trading company?
Q: Are you a factory or trading company?
A:We are China leading high-temperature vacuum furnace manufacturer
with over 10 years’ experience.
Do you have customization or OEM service?
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.
What's your advantage?
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
