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Vertical tube furnace quenching method and quenching precautions

The quenching method of vertical tube furnace adopts pre-vacuum atmosphere protection. During operation, the furnace can be pumped to a certain degree of vacuum, and then high-purity nitrogen or ammonia decomposition atmosphere can be filled into it for protection and heating. , so as to achieve the purpose of non-oxidative heating and non-decarburization bright. Using a stirring fan, it has a higher uniformity of furnace temperature.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
    The heating elements of vertical tube furnaces are made of high-quality materials, have a relatively long service life, and are equipped with exhaust ports and inert gas inlets.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
    The heating element of the vertical tube furnace is located on both sides and below the furnace, and there are circulating air ducts and thermal circulating fans in the furnace. The furnace cover is automatically opened and closed, and one or two pipes can be cured at a time. It is heated by electric heating element, which is generally used for the melting of non-ferrous metals and alloys with a melting point of about 1000 °C. It is made of heat-resistant stainless steel. During the heating and cooling process, the furnace is always under the protection of high-purity nitrogen to ensure that the surface of the material is bright and free of oxidation. The specific quenching methods and principles are as follows:GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
一、 Quenching method:GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
1. Single-liquid quenching: only one coolant is used when quenching the workpiece in the tubular heating furnace.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
2. Pre-cooling and quenching: When the workpiece is quenched in the tubular heating furnace, the workpiece should be properly cooled before being immersed in the coolant.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
3. Double-liquid quenching: The workpiece is first immersed in water to cool, and then immersed in oil to cool slowly.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
4. Grading quenching: The workpiece is first immersed in molten salt to cool, and then cooled in air.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
5. Hot bath quenching: The workpiece is only immersed in high temperature nitrate or alkali to cool, and finally cooled in air.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
6. Isothermal quenching: The workpiece is immersed in isothermal molten salt to cool.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
二、quenching matters needing attentionGnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
1. The long column workpiece should be vertically cooled in the coolant.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
2. The plate-shaped workpiece should also enter the coolant vertically for cooling.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
3. The cylindrical workpiece should enter the coolant vertically for cooling.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
4. For workpieces with concave surface, the concave surface should be put into the coolant for cooling.GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
 GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
5. When the thickness of the workpiece is uneven, the thick part should be immersed in the coolant for coolingGnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
GnwMuffle Furnace,Tube Furnace,Vacuum Furnace,Atmosphere Furnac
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