Selection of the heating chamber of a vacuum furnace
1. Graphite reflective screen: Generally, there are two types of hard felt and soft felt used in vacuum furnaces, which are suitable for quenching, tempering, and annealing of general steel. High-temperature brazing, powder metallurgy, and sintering, etc.
2. Metal heat insulation screen; Generally, there are two types of stainless steel and molybdenum used in vacuum furnaces. Molybdenum reflective screen is suitable for quenching, annealing, high-temperature brazing, sintering, etc. of materials with high temperature and high requirements for the furnace environment (such as high-temperature alloys, titanium alloys, magnetic materials, etc.). Stainless steel reflective screen is suitable for tempering, low-temperature annealing, aging, vacuum aluminum brazing, etc., and is the choice of some low-temperature vacuum furnace types.
Selection of vacuum degree
1. For quenching heat treatment, medium vacuum (4X10-1Pa) can be selected, using a two-stage pump (fore stage pump and Roots pump), such as vacuum heat treatment of bearing steel, mold steel, structural steel, etc.
2. For some products that require high vacuum, such as vacuum heat treatment or high-temperature brazing of high-temperature alloys, titanium alloys, magnetic materials, etc., you can choose a three-stage pump (pre-stage pump. Roots pump, diffusion pump, etc.), which generally requires a vacuum degree of 10-4Pa.
Selection of control system
1. Standard configuration; the vacuum furnace is based on imported temperature controllers and programmable controllers, which realizes temperature programmable, manual and automatic control.
2. Computer control system; with industrial computers and programmable controllers as the core process programming, storage, and report making. The computer can be operated independently, automatically, manually, and process programming.
3. Computer group control system; with industrial computers as the core, it is a high-tech control system that integrates monitoring, data collection, operation status, and report management of multiple vacuum furnaces.