The hot-set matching method is mainly used

6～12.5 ～11.31Crl8Ni9Ti16.51O.820. The press-in assembly method is mostly used for light and medium-sized static cooperation, and requires mechanical equipment such as a press, so it is generally only used in manufacturing plants.6 14 brass 17. 1.9 Cast Iron 8.611.617.9-16 tin bronze 17. After cooling, the machine parts will reach the required Bond strength.2), not subject to axial movement and After being flattened and cooled, the bonding strength of the internal and external parts will be greater, and the torque that can be transmitted is also greater.9～13.512. In order to prevent the container from cooling and shrinking, the assembly time must be limited. The following describes the hot suit matching method. Generally, empirical data is recommended: heating the minimum assembly gap ⊿ (um) The weight of the machine (㎏) is heated Connector diameter (㎜)

80～120>120～～5060～70100～120150～17050～6080～90130～150180～200210～23060～7090～100180～200240～250 250～270280～300 100～12020～24060～28090～31030～360220～240300～320340～360380～ The diameter increase value of the hole of the 400 container after heating has the following relationship: i+⊿=(t+t0)103*a*D Where: t—the temperature after heating (℃); to—the temperature at which heating starts (℃) ;

I-Interference (um); ⊿-Assembly clearance (㎜) required for the shaft to freely pass into the hole (avoid surface 63 Series Ball Bearings friction); D-Diameter (mm) of the containing part (hole); a- The coefficient of linear expansion (10ˉ6·l/℃) of the container (hole) material. At this time, the above formula can be written as: t=K/(a*D)+ to Note: The unit of K value in the formula is the linear expansion coefficient a value of various metal materials (10ˉ6·l／℃) Material heating temperature Range (℃) Cooling ℃ 20～10020～20020～30020～40020～600 Engineering copper 16.211. The size of the assembly gap directly affects the assembly time.217.918.730CrMnSiAll3Crl310.

At the installation site, the hot-set matching method is mainly used, because this assembly method is relatively simple and can be used for large-diameter (D; 1000mm) and large interference) machine parts. In fact, the heating expansion value must be greater than the matching interference value in order to ensure smooth installation without serious accidents such as the shaft and the hole being stuck due to the cooling and shrinkage of the container during the installation process.640CrSi11.7～11.2-8 nickel-chromium alloy 14.913.818.

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