Heating coil and quenching device

摘要

A heating coil (101) and a quenching device are provided, the heating coil (101) and the quenching device can stably form a non quenched region at the open side end of the roller guide groove (4),The manufacturing cost of tripod type constant velocity seal (1) and its outer ring (2) is reduced;And a plurality of protection elements (11 amp;),The serpentine tube body comprises three heaters (112a, 112b and 112c),Each of the heaters is located in the roller guide groove of the outer ring of the tripod type uniform speed seal and has three connectors. The heater has a first heater wire (120) and a second heater wire (121),The connector has a first connection conductor (123) and a second connection conductor (124),Each connector is provided with a protective element arranged between the first connecting conductor and the second connecting conductor of the connector, The circumferential gap between the first connecting conductor and the second connecting conductor of the connector is larger than the circumferential gap between the second heater conductors of the heaters of the two adjacent heaters The first heater wire of the other heater.Abstract figure: Figure 1