Reduce Damage in Shrink Fitting

Isolation is not liked by human beings but if isolation is for installing the new connection in the existing pipeline then it is good, isn’t it? It’s the better way of pipeline isolation to intervene the fitting. Here, there is use of traditional way to fit the component into another pipeline where according to the situation force fit method and enlarging the outer component with the medium of heat is applied.  During the shrink fitting process both of these methods can be applied but you must be aware about its disadvantages too. The method of force fit can lead to the mechanical damage in between both of the two faces and while enlarging and expanding the outer component the damage is caused locally as improper way of heating procedure is applied. Even the practicalities of heating the big frames got affected by this method.

Both of these traditional methods can be applied with a better alternative of Shrink fitting. By applying the immersed liquid nitrogen bath at – 196 degree C the disadvantages can be lessened by using the inner component. This method is advantageous and is considered as one of the safest option and method of the assembly area as it inert the liquid nitrogen. It even is used in the workshop situation where there is proper availability of the ventilation. Because of the adequate ventilation the component present in the process is saved from suffering, from damage as the nitrogen liquid hasn’t got any long term effect where the metals contains iron with a valence of two with having certainty of a solid solution of carbon in iron that occurs as a component of steel at a specific stage during the manufacture process.

The manufacture process of the shrink fitting takes place in three stages, Sequence A, Sequence B and Sequence C respectively. At first stage, the end of the shaft (pipe) is absorbed and engrossed in the cooling tank of the liquid Nitrogen where it cools itself down at the temperature of – 196 degree. Then, the beam i.e. shaft and the pipe where the sleeves of the immersed shaft has been fixed already is placed in to the system of drive coupling (here, the sleeves are placed in a situation so that they can retain the bolt). Then after being absorbed, being immersed it is then shrunk to the predestined and prearranged position, dropping itself in its new position of coupling. Then finally, this process of shrink fitting is allowed to warm itself according to the room temperature.

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