Vacuum Chamber Furnaces

VACUUM CHAMBER FURNACES – FAQ

HOW TO CHOOSE THE TEMPERATURE OF VACUUM CHAMBER FURNACE?

Vacuum heat treatment furnaces are usually divided into three temperature levels: 1200°C, 1400°C, and 1700°C. When the actual operating temperature is lower than 1200°C, a 1200°C vacuum furnace can be selected. This temperature vacuum furnace uses HRE alloy resistance wire as the heating element, suitable for the vacuum annealing of metals and carbon materials.

When the actual operating temperature is higher than 1200°C but lower than 1400°C, a 1400°C vacuum furnace can be selected. This temperature vacuum furnace uses SIC silicon carbide rods as the heating element, suitable for the annealing of non-ferrous metals and the vacuum sintering of non-metallic ceramic materials.

When the actual operating temperature exceeds 1400°C but is below 1700°C, a 1700°C vacuum furnace can be chosen. This temperature vacuum furnace uses MoSi2 silicon molybdenum rods as the heating element, suitable for the heat treatment of new materials such as composite materials and nanomaterials.

The continuous operating temperature of the vacuum furnace should be lower than its design temperature by 100°C, the correct use can effectively extend the life of the vacuum furnace.

HOW TO CHOOSE THE VACUUM SYSTEM OF VACUUM CHAMBER FURNACE?

The vacuum furnace body employs a flange seal structure. It features a sealed door with a locking device and an independent vacuum exhaust port, allowing it to operate under vacuum.

The vacuum system uses a trapezoidal O-ring, made of wear-resistant silicone material, ensuring reliable sealing with minimal vacuum leakage.

A mechanical pressure gauge displays the pressure inside the furnace, while a digital composite vacuum gauge can be used for a digital representation of the vacuum degree.

Different vacuum pumps can achieve varying vacuum levels, which significantly affect the price. Generally, the options include molecular pumps, diffusion pumps, roots pumps, and mechanical pumps. Mechanical pumps can reach a vacuum degree below 500pa. Combined with mechanical pumps, roots pumps can achieve a vacuum degree below 50pa. The vacuum degree of the diffusion pump unit can reach 6×10^-2pa.