Top Reasons to use Tube Expander Tool & Heat Exchanger

 

When fixing and molding tubes to tube sheets in the manufacturing processes of heat exchangers such as boilers and condensers, we frequently use rolling tube type expansion tools, also known as tube expanders.

What Is A Tube Expander Tool? 

A tube expander tool is a critical piece of equipment in any heat exchanger. And most tube expanders have four main components. This tune expander component, like the roller, has a tapered shape. Its primary function is to rotate the roller via contact fiction. 

1. Roller: A roller has a tapered shape and is designed to ensure that the interiors of expanded tubes always take on a spherical shape. It applies rolling pressure to the inside of the tube to facilitate plastic deformation.

2. Frame: The frame is in charge of maintaining the position of the rollers at regular intervals, which aids in the prevention of failure. It also works to provide a feed angle to the groove into which the roller is inserted, resulting in a configuration in which the mandrel is rotated clockwise.

3. Bearing collar: A bearing collar does not make up the tube expander; rather, it is attached to it. Attaching a bearing collar to your tube expander is the way to go if you want a lower thrust during tube expansion as well as less damage to the tube and tube sheet.

What Includes In The Wide Range Of Tube Expansion Process? 

Different companies and individuals use a wide range of tube expansion processes. However, these are primarily classified into two types: parallel tube expansion and flare tube expansion. 

1. Parallel Tube Expansion

2. Flare Tube Expansion

Before we roll up our sleeves and begin rolling and setting up the expander, we must first select the proper tube expander. And with so many options available, one can easily become perplexed. We have a series of steps that will help you choose the right tube expander to get you out of the same situation.

Tube Expanders are rolling tube type expansion tools used in the manufacturing of heat exchangers such as boilers and condensers for fixing and molding tubes to tube sheets. During normal operation, heat exchanger tubes are constantly expanding and contracting as they heat up and cool down.

Heat Exchanger Tube Expander with channel boxes or division plates where the tubes are too close to a wall for the expander's collar to access perimeter tubes will necessitate the use of a friction collar.

Final Words 

Tube expanders are available in two roll lengths: short and long. The tube sheet thickness must be known in order to calculate the correct roll length. Select the roll length that will expand the tube sheet area with the fewest expansions. 

The inner primary tube sheet thickness must be specified when expanding tubes in a double tube sheet so that the expander's rolls can be manufactured to allow for the proper effective expansion length. The outer tube sheet, on the other hand, would be made from standard rolls.