How to select vacuum furnace products?
The selection of the vacuum furnace mainly involves the pumping speed of the vacuum pump and the selection of the material of the heating chamber. The most suitable product equipment can be selected by comprehensively considering the use range of the product vacuum, the material processing temperature and other factors. 1. Vacuum SelectionThe working vacuum degree should be selected according to the material and the heating temperature. First, the working vacuum degree required by non-oxidizing heating must be met, and then the surface brightness, degassing, and alloy element evaporation should be considered comprehensively. The recommended working vacuum degree for common material vacuum treatment is as follows: Vacuum heat treatment Recommended working vacuum Vacuum brazing Recommended working vacuum Steel 1-10-1 Pa Aluminum products 10-3Pa Stainless steel, high temperature alloy 10-2 -10-3 Pa Copper base products 10-1 -10-2 Pa Titanium alloy 10-3Pa Nickel-based products 10-2 -10-3 Pa Copper alloy133-13.3 PaMulticomponent alloy product10-1 -10-3Pa 2. Selection of heating and thermal insulation materialsThe 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, tungsten 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. Operation Temperature Heating element selection Insulation layer selection 850℃ and below Heat resistant steel Heat resistant steel + Stainless steel 850℃-1100℃ Molybdenum metal or heat resistant steel Molybdenum metal + Stainless steelMolybdenum metal + graphite felt 1100℃-1300℃ Molybdenum-lanthanum alloy Molybdenum-lanthanum alloy + Stainless steel High purity graphiteGraphite soft felt +Graphite hard felt1300℃-1600℃Isostatic graphiteGraphite soft felt +Graphite hard feltTungsten alloyTungsten alloy+Molybdenum-lanthanum alloy + Stainless steel1600℃-2100℃Isostatic graphiteGraphite soft felt +Graphite hard feltTantalumTantalum+Molybdenum-lanthanum alloy + Stainless steel 3. Meaning of equipment modelJ: The first letter of the company's English name V：The first letter of vacuum Furnace Type Examples Meaning JVOQ series double-chamber oil quenching vacuum furnace JVOQ966M Molybdenum heating chamber double-chamber oil quenching vacuum furnace OQ: Oil quenching abbreviations966: Effective zone sizeM: Molybdenum heating chamber JVGQ series high pressure gas quenching vacuum furnace JVGQ2-966M-10bar10bar Molybdenum heating double-chamber high-pressure gas quenching furnace GQ:Gas quenching abbreviations966: Effective zone sizeM:Molybdenum heating chamber10bar:Gas quenching pressure JVAF series annealing vacuum furnace JVAF966AF:annealing furnace abbreviations966:Effective zone sizeJVTF series tempering vacuum furnaceJVTF966TF:tempering furnace abbreviations 966:Effective zone sizeJVAB series aluminium brazing vacuum furnace JVAB3511AB:Aluminium brazing abbreviations 3511:Effective zone sizeJVHB series high temperature brazing vacuum furnace JVHB966HB:High temperature brazing abbreviations 966:Effective zone sizeJVDB series diffusion bonding vacuum furnace JVDB966DB: diffusion bonding abbreviations 966:Effective zone sizeJVSF series sintering vacuum furnace JVSF966SF: Sintering furnace abbreviations 966:Effective zone sizeJVLF series laboratory vacuum furnace JVLF211LF:Laboratory furnace abbreviations 211:Effective zone size Note: Vertical vacuum furnace add V (Vertical) after the above model letters./products-list.htm