Coupling installation can be divided into hot-installation and cold-installation methods. Today, Wansheng Xiaobian wants to let everyone know how the two methods for installing the coupling are different. Which method is most suitable for installing the coupling? The explanation is as follows:
Hot Packing Method: Generally, the method of heating the containing parts to the required temperature by hot charging method should be selected according to the site conditions, the size, quantity and requirements of the heated parts. The heating method is solid fuel heating, hot dip heating, oxy-acetylene flame heating, torch heating, electric heating. If conditions permit, it can be heated in special furnaces (such as flame heating furnaces, salt bath furnaces, electric resistance furnaces, etc.). When the site conditions on site are not allowed, a simple stove can be constructed and heated with solid fuels such as firewood and coke. If conditions permit, gas or liquid fuel can also be used for burning. Dip heating is usually only used for small size joints (internal diameter of 100mm or less), the method is simple and uniform heating. When oxygen-acetylene flame heating method is used to heat small parts or parts of larger parts, the method is simple, but more skilled techniques are required to prevent overheating and burning of parts.
Cold-installed method: It is completed by a slamming method, which easily causes damage to the parts.
Coupling shaft bore cold loading and hot charging required conditions and technical parameters Coupling temperature difference assembly method is to heat the coupling to heat expansion or cooling the shaft end by the cold contraction, which can easily be put The wheel coupling is fitted to the shaft. This method has more advantages than the static press-in method and the dynamic press-in method. For a hub made of a brittle material, a temperature difference assembly method is very suitable. The temperature difference assembly method mostly uses the heating method, and the cooling method uses less. There are many ways to heat, some put the hub into high flash oil for oil bath heating or torch bake, while others use the oven to heat the assembly site using oil bath heating and torch bake. The maximum temperature reached by heating in the oil bath depends on the nature of the oil and is generally below 200°C. When using other methods to heat the hub, the temperature of the coupling can be higher than 200°C, but from the perspective of metallurgy and heat treatment, the heating temperature of the coupling cannot be arbitrarily increased, and the recrystallization temperature of the steel is 430°C. If the heating temperature exceeds 430°C, a change in the internal structure of the steel material occurs, so the upper limit of the heating temperature must be less than 430°C. For insurance, the upper limit of the heating temperature should be below 400°C. As for the actual required heating temperature of the coupling, it can be calculated based on the interference of the coupling with the shaft and the requirements of the coupling after heating the coupling to the shaft.
Hot Packing Method: Generally, the method of heating the containing parts to the required temperature by hot charging method should be selected according to the site conditions, the size, quantity and requirements of the heated parts. The heating method is solid fuel heating, hot dip heating, oxy-acetylene flame heating, torch heating, electric heating. If conditions permit, it can be heated in special furnaces (such as flame heating furnaces, salt bath furnaces, electric resistance furnaces, etc.). When the site conditions on site are not allowed, a simple stove can be constructed and heated with solid fuels such as firewood and coke. If conditions permit, gas or liquid fuel can also be used for burning. Dip heating is usually only used for small size joints (internal diameter of 100mm or less), the method is simple and uniform heating. When oxygen-acetylene flame heating method is used to heat small parts or parts of larger parts, the method is simple, but more skilled techniques are required to prevent overheating and burning of parts.
Cold-installed method: It is completed by a slamming method, which easily causes damage to the parts.
Coupling shaft bore cold loading and hot charging required conditions and technical parameters Coupling temperature difference assembly method is to heat the coupling to heat expansion or cooling the shaft end by the cold contraction, which can easily be put The wheel coupling is fitted to the shaft. This method has more advantages than the static press-in method and the dynamic press-in method. For a hub made of a brittle material, a temperature difference assembly method is very suitable. The temperature difference assembly method mostly uses the heating method, and the cooling method uses less. There are many ways to heat, some put the hub into high flash oil for oil bath heating or torch bake, while others use the oven to heat the assembly site using oil bath heating and torch bake. The maximum temperature reached by heating in the oil bath depends on the nature of the oil and is generally below 200°C. When using other methods to heat the hub, the temperature of the coupling can be higher than 200°C, but from the perspective of metallurgy and heat treatment, the heating temperature of the coupling cannot be arbitrarily increased, and the recrystallization temperature of the steel is 430°C. If the heating temperature exceeds 430°C, a change in the internal structure of the steel material occurs, so the upper limit of the heating temperature must be less than 430°C. For insurance, the upper limit of the heating temperature should be below 400°C. As for the actual required heating temperature of the coupling, it can be calculated based on the interference of the coupling with the shaft and the requirements of the coupling after heating the coupling to the shaft.
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