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Problems encountered in vacuum brazing of stainless steel
The Cr2O3 oxide film formed on the surface of stainless steel is quite stable and difficult to remove. To realize vacuum brazing of stainless steel, it is necessary to understand the removal mechanism of Cr2O3 oxide film in vacuum during the brazing process. Stainless steel vacuum film removal me...
Vacuum Brazing and its Applications
For ceramic materials, everyone’s first impression is definitely its high melting point, high insulation performance and poor thermal stability. In the process of welding assemblies using ceramics and metals as connecting materials, these characteristics often add great difficulty to tradit...
Why does vacuum heat treatment always use nitrogen?
Vacuum heat treatment usually requires the use of nitrogen as the treatment atmosphere, mainly for the following reasons: Prevent oxidation: Nitrogen can form a protective oxide layer at high temperatures to protect metal products during heat treatment from chemical reactions such as oxidation an...
Vacuum brazing of refractory metals
When are refractory metals combined with vacuum brazing? Due to the oxidation or inherent contamination of active metals, vacuum brazing is often used when connecting refractory metals to active metals, such as titanium and aluminum. Refractory metals refer to metals with very high melting tempe...
Why Switch to Brazing in a Vacuum Furnace
Vacuum brazing is particularly suitable for connecting geometrically complex and precise components, mostly composed of materials such as aluminum or titanium, and the brazing process does not produce pollution. It is also sometimes preferred over a hydrogen atmosphere when brazing very large par...
Vacuum Furnaces: Everything You Need To Know
Vacuum furnaces have short cycle times. Heating 1,000 pounds of charge in a heating chamber that is already at 1,000°C takes 60 minutes, whereas heating the same chamber with 1,000 pounds of charge from cold would take 90 minutes (1.5 times longer). Advantages in cycle times and energy usage resu...
Many advantages of multi-chamber vacuum furnaces
Multi-chamber vacuum furnaces have many advantages such as vacuum processing, energy saving and maintenance cost reduction. Early vacuum furnaces all adopted a single-chamber design, and the heating and cooling required for typical processing processes were performed in the same furnace chamber. ...
Why Vacuum Heat Treatment is Increasing in Use
Vacuum annealing and vacuum hardening are the basic heat treatment forms of aluminum alloys. Vacuum annealing is a softening process. Its purpose is to make the alloy uniform and stable in composition and structure, eliminate work hardening, and restore the plasticity of the alloy. Vacuum hardeni...
Titanium alloy vacuum brazing process
The biggest advantages of titanium alloys are their high specific strength and superior overall performance. Among all titanium and alloys, TC4 is the most commonly used. Based on its high specific strength, high specific stiffness, good oxidation resistance, corrosion resistance, and high temper...
Maintenance Procedures for Vacuum Furnace
Vacuum Furnace General Preventive Maintenance Checklist Every 3 months: – Check all transformers or voltage regulators (VRT) – Check the secondary power cable to the voltage regulator (VRT) for fraying or cracks. – The connection locations of all incoming and outgoing cables on the voltage regula...