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Vacuum furnace heating and heat preservation material selection

2023/3/8 13:20:56

The equipment can choose different heating elements and heat insulation layers according to different operating temperatures. The commonly used heating element materials are heat-resistant steel(Cr20Ni80), high-purity graphite, molybdenum and alloys,etc.The temperature range is as follows. In addition to the selection of the above materials, it is necessary to comprehensively consider the energy consumption and stability under long-term use.

工作溫度 Operation Temperature	加熱元件選擇 Heating Element Selection	隔熱層選擇Insulation Layer Selection
800℃及以下 800℃ and below	高溫鎳鉻合金 High temperature nickel-chromium alloy	不銹鋼Stainless steel
800℃-950℃	高溫鎳鉻合金Cr20Ni80 High temperature nickel-chromium alloy	耐熱鋼+不銹鋼 Heat resistant steel + stainless steel
		耐熱鋼+石墨氈 Heat resistant steel + graphite felt
950℃-1100℃	金屬鉬 or 耐熱鋼 Molybdenum metal or heat resistant steel	金屬鉬+不銹鋼 Molybdenum metal + stainless steel
		金屬鉬+石墨氈 Molybdenum metal + graphite felt
1100℃-1300℃	鉬鑭合金 Molybdenum-lanthanum alloy	鉬鑭合金+不銹鋼 Molybdenum-lanthanum alloy+ stainless steel
	高純石墨 High purity graphite	石墨軟氈+石墨硬氈 Graphite soft felt + Graphite hard felt
1300℃-1600℃	鉬鑭合金Molybdenum-lanthanum alloy	鉬鑭合金+不銹鋼 Molybdenum-lanthanum alloy + stainless steel
	等靜壓石墨 Isostatic pressed graphite	石墨軟氈+石墨硬氈 Graphite soft felt + Graphite hard felt
	鎢合金Tungsten alloy	鎢合金+鉬鑭合金+不銹鋼 Tungsten alloy + Molybdenum-lanthanum alloy +stainless steel
1600℃-2100℃	等靜壓石墨Isostatic pressed graphite	石墨軟氈+石墨硬氈Graphite soft felt + Graphite hard felt
	鉭Tantalum	鉭+鉬鑭合金+不銹鋼Tantalum+Molybdenum-lanthanum alloy+Stainless steel