The structure of the expander consists of three main components

The structure of the expander consists of three main components

1. Roller

It is a component used to roll and deform the inner surface of the heat dissipation tube. Design to have an inverse dimension equal to the axis dimension, so that the inner surface of the expanded heat dissipation tube often remains true to its original shape. And the head has a smooth surface. Avoiding stress concentration after pipe expansion while preventing heat dissipation

Sharp angles are formed inside the tube.

2. Cardinal axis

A component that utilizes friction to rotate a roller. Same as rollers with dimensions. Due to the need for certain pressure resistance and wear resistance of the rollers and mandrels, special steel was used, and appropriate heat treatment and precision grinding were carried out.

3. Roller frame

It is a component designed to maintain equal spacing between 3-7 rollers and prevent them from falling off. The roller groove has a certain feed angle, and rotating the tool spindle to the right will automatically feed and allow for automatic tube expansion.

▲ Straight tube expansion tubes are mainly used for heat exchangers, condensers, boilers, and other heat dissipation expansion tubes. In this case, straight tube expansion tubes, bearing type expansion tubes, and regulating type expansion tubes are selected.

▲ Flanging tube expansion is a method of processing the end of the tube into a trumpet shape (flange 15), which is used to strengthen the tensile stress. It is mainly used for expanding tubes in boilers. In this case, a flange type tube expander or a controlled flange type tube expander is selected. (mostly used for water inlet)

The purpose and types of pipe expanders

Used for pipe expansion manufacturing or old pipe replacement work, it can expand the wall of various metal pipes and tightly integrate with the end plate in the pipe, achieving the effect of pressure sealing.

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The structure of the expander consists of three main components

1. Roller

It is a component used to roll and deform the inner surface of the heat dissipation tube. Design to have an inverse dimension equal to the axis dimension, so that the inner surface of the expanded heat dissipation tube often remains true to its original shape. And the head has a smooth surface. Avoiding stress concentration after pipe expansion while preventing heat dissipation

Sharp angles are formed inside the tube.

2. Cardinal axis

A component that utilizes friction to rotate a roller. Same as rollers with dimensions. Due to the need for certain pressure resistance and wear resistance of the rollers and mandrels, special steel was used, and appropriate heat treatment and precision grinding were carried out.

3. Roller frame

It is a component designed to maintain equal spacing between 3-7 rollers and prevent them from falling off. The roller groove has a certain feed angle, and rotating the tool spindle to the right will automatically feed and allow for automatic tube expansion.

▲ Straight tube expansion tubes are mainly used for heat exchangers, condensers, boilers, and other heat dissipation expansion tubes. In this case, straight tube expansion tubes, bearing type expansion tubes, and regulating type expansion tubes are selected.

▲ Flanging tube expansion is a method of processing the end of the tube into a trumpet shape (flange 15), which is used to strengthen the tensile stress. It is mainly used for expanding tubes in boilers. In this case, a flange type tube expander or a controlled flange type tube expander is selected. (mostly used for water inlet)

The purpose and types of pipe expanders

Used for pipe expansion manufacturing or old pipe replacement work, it can expand the wall of various metal pipes and tightly integrate with the end plate in the pipe, achieving the effect of pressure sealing.

The types of pipe expanders can be roughly divided into straight tube expanders, flanged expanders, deep hole adjustable expanders, bearing type expanders, etc.

Expansion tube tool is a rolling expansion tube tool used to fix the heat dissipation tube on the tube plate and perform forming processing in the manufacturing of heat exchangers, boilers, and condensers. Prepare an expander that is suitable for the material, size, and length of the heat dissipation tube.

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