Choosing The Right Rolling Motor

2022-06-13T12:57:47-05:00

With a wide variety of rolling motors on the market, choosing the right one can seem overwhelming. There are several factors to consider when selecting a rolling motor. Power source, torque control, RPM, torque range, and the style of the motor will vary depending on the application.

Choosing The Right Rolling Motor2022-06-13T12:57:47-05:00

How To Expand Welded Tubes

2022-06-13T13:01:44-05:00

Expanding tubes after they have been welded can be frustrating for operators. If not rolled properly, tube material can build up and put stress on the weld. In extreme cases the tube material can build up so much that the expander can get stuck in the tube, delaying the job.

How To Expand Welded Tubes2022-06-13T13:01:44-05:00

How to calculate roll ID

2021-05-18T09:57:38-05:00

Tube Expanding is based on engineering principles, involving elasticity and plasticity, to compress the OD of the tube against a fixed container, such as rolling tubes into tube sheets, drums, ferrules or flanges. To assure a proper tube joint, the tube wall must be reduced by a predetermined percentage. The following chart can be used for determining the correct tube wall reduction.

How to calculate roll ID2021-05-18T09:57:38-05:00

Expanding Tubes In Heat Exchangers

2022-10-05T12:02:58-05:00

Before you can start rolling, you will need to select the right expander for the job. Tube OD, and Wall/BWG will determine the size of the expander. However, there are some other factors to consider, such as tube projection, roll length, reach requirements, space constraints, and whether it’s minimum or average wall tubing.

Expanding Tubes In Heat Exchangers2022-10-05T12:02:58-05:00

Expanding Fire Tube Boiler Tubes

2022-09-08T16:46:11-05:00

Firetube boiler tubes consist of an expanded and beaded tube end. The method for achieving a bead has advanced over the years to include both hand beading and single roll beading expanders. In order to ensure a proper bead, there are several steps that need to take place before expansion can occur.

Expanding Fire Tube Boiler Tubes2022-09-08T16:46:11-05:00

Materials, Tube Leaks, & Pre-Expansion Steps

2022-06-13T13:03:19-05:00

In general, you want to roll to the lowest wall reduction possible where a tight tube to tube sheet joint can be achieved. The harder the material the less wall reduction required to obtain a tube joint.  You should always consult the manufacturer of the heat transfer vessel for specific information before undertaking any maintenance procedures.

Materials, Tube Leaks, & Pre-Expansion Steps2022-06-13T13:03:19-05:00
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