Vacuum furnaces and atmosphere furnaces, both being heat treatment equipment, share many similarities that often lead to confusion. How can users distinguish between them? Today, the editors at Star Ding will provide an explanation from various aspects on the differences between vacuum furnaces and atmosphere furnaces:

I. Working Principle

A vacuum furnace is a box-type drying equipment that dries materials under vacuum conditions. It uses a vacuum pump to exhaust moisture, creating a vacuum state within the workspace before heat treatment can begin. This lowers the boiling point of water, accelerating the drying process. After the thermal processing is complete, an exchanger is used to subject it to forced cooling, thereby completing the operation process.

The Atmosphere Furnace: It provides atmosphere protection without vacuum in normal conditions, allowing for the passage of atmosphere to meet customers' processing needs for the product.

Section II: Composition Structure

The vacuum furnace is a circular structure composed of the furnace body, door, heating element, insulation, control, measurement, power supply, and vacuum system. The vacuum system includes vacuum pumps, vacuum measuring devices, and vacuum valves, capable of achieving a high vacuum degree.

The Atmosphere Furnace is composed of a furnace body, a movable inner liner架, temperature control, resistance wire heating system, and a display system. The furnace door features a cooling water system, and the furnace body is equipped with several inlets and outlets for gas. This allows for simultaneous进气 and 出气. It is an improved version of a standard muffle furnace, with the enclosure fully welded and sealed using silicone rubber, typically featuring a square structure.

III. Processing Features

Vacuum Furnace: The vacuum furnace eliminates oxidation and decarburization on the workpiece surface during the heating process, resulting in a surface free of any altered layers. This significantly improves the cutting performance of tools that require only one side to be ground. The vacuum furnace employs zoned heating, maintaining consistent temperatures within the heating areas, ensuring the workpieces remain smooth and clean.

Atmospheric Furnace: Selecting the appropriate atmosphere for different materials, introducing gases into the furnace chamber for sintering, enhances the densification of workpieces, thereby improving their performance and quality.

Four: Scope of Application

Vacuum Furnaces: Primarily used in vacuum brazing operations for stainless steel heat exchangers, stainless steel thermal mugs, engine oil coolers, and other brazing tasks; metal brazing of non-ferrous metals, titanium alloys, high-temperature alloys, and hard metals; vacuum tempering processes for materials such as tool and die steel, bearing steel, and high-speed steel; and vacuum brazing for aluminum heat exchangers and other aluminum products.

Atmospheric Furnaces: Designed for industrial and mining laboratories, as well as university research facilities, these furnaces provide data for chemical analysis and material testing. They are used to measure high-temperature sintering and dissolution of metals and ceramics under specified conditions. Atmospheric furnaces are a type of industrial electric furnace, primarily utilized in metallurgy, heat treatment, abrasive tools and materials, and glass industries.

Here's the difference between vacuum furnaces and atmosphere furnaces. We hope this information is helpful to you! Determine which equipment suits your needs. The vacuum furnaces produced by Luoyang Xingding Kiln Co., Ltd. are characterized by high processing efficiency, a complete range of specifications, and comprehensive after-sales service. Feel free to call or leave a message for inquiries at any time.

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