Induction Heating for Shrink-Fitting Applications - Induction heating equipment factory since1991-LJ Induction

INDUCTION SHRINK FITTING

Typically, metals expand when heated and contract when cooled. This phenomenon is called thermal expansion. Induction shrink fitting is used for either installing or removing parts. Heat is applied between 150°C and 300°C to a metal component, thus causing it to expand and allowing it to be inserted or removed. As an example, when two parts of pipe are joined, one part is heated until its diameter is large enough for the other to fit over it. Joints become strained and strong when they return to ambient temperature – they ‘shrink fit’. The same can be done before dismantling the joint using thermal expansion.

Controllability, consistency, accuracy, and fast fit are among the benefits of induction shrink fitting. Heating by induction requires great precision. A heater produces heat only in the part where it is used, not in the air surrounding it. The method reduces the risk of ovality while improving the energy efficiency of your home. Furthermore, induction often uses less energy because it creates equally distributed, consistent heat. Heat sources can be precisely ramped up and held at a specific temperature. This differs from conventional heating methods since there are no naked flames involved. The versatility of induction shrink fittings makes them useful for many applications in volatile environments, including petrochemicals.

Induction shrink fitting can be used in many industries and applications. We manufacture systems for shrinking gears, bearings, and rings in the automotive industry. Mechanical engineers work in industries such as aircraft and railroad maintenance. These systems are used for shrink fitting on ships and offshore platforms and are also increasingly used to fit and remove the enormous bolts and nuts in turbines at power plants and in wind power generators. Metal expands when heated up and contracts when cooled. Known as thermal contraction, this is the dimensional response to temperature changes. Induction shrink fitting involves fitting or removing parts using this effect. Heating the metal component between 150°C and 300°C allows it to expand, allowing another component to be inserted or removed. One part of the pipe is heated to expand its diameter so that it can be fitted over the other part when fitting two parts of pipe together, for example. Upon regaining ambient temperature, the adjoined parts become strained and strong – ‘shrink-fit’. Before disassembling, thermal expansion can loosen a joint.