Experimental Silicon carbide sintering furnace is a critical equipment for manufacturing silicon carbide materials. The reaction-sintered silicon carbide products processed by this furnace exhibit exceptional technological properties, featuring uniform particle size distribution, complete reaction process, high chemical composition content, and superior quality.

The system is equipped with an advanced dewaxing unit that enhances the dewaxing efficiency while ensuring more stable in-furnace atmosphere, which collectively extends the service life of carbon felt and heating elements. Utilizing resistance or induction heating technology with graphite tube heating elements, this furnace demonstrates long-lasting component durability, excellent heating performance, and convenient maintenance capabilities.

Application Scope:

The silicon carbide sintering furnace is applicable to: pressureless sintering of boron carbide ceramics, pressureless sintering of silicon carbide ceramics, recrystallization sintering of silicon carbide ceramics, sintering of aluminum nitride ceramics, sintering of high - performance ceramic substrates, sintering of precision ceramics with high requirements for shrinkage size and product density consistency, powder metallurgy Sintering, or high - temperature vacuum sintering of other metal and non - metal materials.

Product Features:

1.High degree of automation. One - click replacement (the process of evacuating the furnace and filling with argon gas) can be achieved. During the operation, water, electricity, and gas are automatically monitored throughout the process. The operation status of the equipment can be observed at any time through touch - screen simulation. Equipment alarm indication, heating curves, startup and shutdown operations can all be viewed and operated on the touch screen.

2.High - quality materials. The furnace body is entirely made of 304 stainless steel, fabricated in strict accordance with the pressure vessel standard, with good corrosion resistance and airtight performance. The insulation materials are all made of high - purity graphite felt, which is durable. All electrical components adopt reliable domestic and foreign brands, ensuring reliable operation.

3.High safety. The furnace body is equipped with an automatic explosion - proof valve, which is safe and reliable. A flow switch is separately installed on the inductor part to monitor the water flow in real - time. The power supply strictly and effectively sets the over - current value and over - voltage value as required.

4.The equipment can be optionally equipped with a special circulating water cooling system for the medium - frequency power supply and a protective gas purification device. The special circulating water cooling system for the medium - frequency power supply can effectively reduce and eliminate equipment failures caused by cooling water quality problems, ensuring the long - term normal production of the equipment. The protective gas purification device can improve the purity of the protective gas, extend the service life of the insulation materials in the furnace, and reduce customer costs.

5.All series of products of the high - temperature vacuum sintering furnace can achieve integrated product dewaxing and sintering, greatly shortening the product production cycle.

FAQ：

Q1: What factors determine the optimal sintering temperature for SiC?

The sintering temperature depends on the material composition and desired properties. For example:

Reaction Sintering: Typically requires 1,500°C–1,800°C to enable silicon infiltration into porous preforms.

Hot-Press Sintering: Requires higher temperatures (2,000°C–2,200°C) under applied pressure to achieve full densification.

Microwave Sintering: Can achieve similar results at 100°C–150°C lower than conventional methods due to volumetric heating.

Q2: How can users extend the lifespan of a sintering furnace?

Regular Maintenance: Inspect heating elements, insulation, and vacuum seals for wear or degradation.

Controlled Cooling: Avoid rapid temperature changes to prevent thermal shock.

Cleanliness: Remove residual powders and contaminants after each cycle to prevent clogging or chemical reactions.