The Most Detailed Vacuum Furnace Selection Guide

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Preface：The vacuum furnace has a wide range of specifications, models and types, and as it becomes more and more widely used, the number of manufacturers is increasing.How to choose the equipment correctly to make it fit the actual use situation and perform better ? What about the effect?

1. Selection of Vacuum Furnace Model Size

Vacuum furnaces have a wide range of uses, and customers must clarify the model size when purchasing. Only in this way can there be a clear direction when comparing. As more and more manufacturers sell the same model, the comparison of model sizes at this time is to meet the actual needs of use, so that the quality and performance can be guaranteed.

E.g Vacuum Gas Quenching Furnace(Table 1)

 

2. Selection of Vacuum Furnace Configuration Function

Since the same vacuum furnace brand will have different types of configuration standards in the market, the functions of the design will also be different. At this time, the configuration function requirements must be combined when selecting, and the selection can be more rigorous. In short, only by grasping the key points and details of the purchase in this regard, and having a more comprehensive understanding of the configuration, can we find a more suitable one, at least in terms of performance configuration.

E.g Electrical Equipment of SIMUWU(Table 2)

3. Selection of the Gap in the Process Performance of the Vacuum Furnace

In the process of selection in the market, a comprehensive comparison of its process performance will be formed. Only when the performance is reliable and the craftsmanship is guaranteed can it be difficult to malfunction in the process of use. That is, the temperature range of quenching and tempering should be wide. Especially for processing high alloy steel, the tempering temperature is relatively high and it is very convenient to directly temper without leaving the furnace after quenching. Therefore, in the process of purchase, customers can choose several manufacturers to compare their technological performance gaps, which will also be of great help to customers. You should master the skills in comparison, and you will have a guarantee when you buy a vacuum furnace.

Please refer to SIMUWU Vacuum Furnace

 

4. Selection of the Cooling Form Required by the Vacuum Furnace to Process Materials

The cooling methods of vacuum furnace are oil cooling and air cooling. At present, it is mainly air-cooled. Air-cooling basically does not have any pollution and adverse effects on heat-treated parts. After treatment, the surface of the parts is clean and does not need to be cleaned. The oil-cooled surface has the problem of micro-carburization, which has a certain impact on the quality, so air-cooled quenching is generally selected under the condition of satisfying the cooling rate. The cooling speed of air-cooling is mainly affected by factors such as air pressure, flow rate, and the form and distribution of airflow, and it must be fully considered when making a selection. Generally, the air pressure is high, the flow rate is large, and the cooling rate is fast. In addition, the flow rate of the heat exchanger cooling water during air cooling has a significant impact on the actual cooling. However, some materials can only be quenched by oil cooling, and cannot reach the level of heat treatment process under air cooling. Therefore, when choosing the cooling mode, it is necessary to choose according to the type of material.

E.g Vacuum Gas Quenching Furnace ＆ Vacuum Oil Quenching Furnace

 

 5. Selection of Control System and Tightness of Vacuum Furnace

The control system is the core part of the vacuum furnace, and its reliability and integrity must be ensured. It is better to have functions such as monitoring, fault display, and recording. Its tightness and reliability of vacuum system configuration are also important links. When styling equipment, you should not only strive for complexity from the form, but also strive for reliability on the basis of comparison.

Please refer to Core of Vacuum Furnace-control System

※ Misunderstanding:

The answer is no. Choosing a vacuum furnace must first be based on the chemical composition of your product and the required high heating temperature. In terms of ultimate vacuum, the relationship between the equilibrium decomposition pressure of metal oxides and carbides must be met, and a certain margin must be set. Don’t just blindly pursue a high vacuum. Too high a vacuum will not only cause the volatilization of alloy elements, but also increase the equipment configuration and increase the investment cost.