Advantages of the Airmo’s Hydro Expansion System
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Fast - Expansion operation of 2 to 5 seconds per tube |
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Portable - You can bring the expander to the coil |
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Consistent - Normal wall thickness tolerances have no effect on the expanded diameter result |
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Flexible - Coil size and shape are of no concern |
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Safe - Operator is not exposed to moving parts |
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Compact - Machine requires 10 square feet of floor space |
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Efficient - Very low power consumption |
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Environmentally Safe - Expander uses ordinary tap water as the hydraulic expansion medium |
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Economical - Less expensive to purchase and maintain than mechanical expansion systems |
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Flexibility - Multiple options available including dwell hold time at yield point |
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Hydro expansion is a method of tube expansion which fills the tube (either straight length or hairpin tubes) with water. Once filled, the water is pressurized past the yield point of the tube thereby providing expansion. This method is used extensively in baseboard header assemblies and in air conditioning coil production for bonding tubes to fin assemblies.
The hydro expansion system utilizes high-speed PLC control and pressure sensors to produce an exact expansion. This is achieved by matching a preset pressure value (operator entered) with actual line pressure or expansion pressure. When the actual line pressure reaches the preset value, the expansion system instantly dumps pressure providing a fast constant expansion and fin bond.
Airmo expansion tooling grips and seals the tube even at the most extreme pressures. With pressure systems up to 30,000 PSI (2,070 Bar) working pressure, the operator can change sizes via our quick connections in less than 5 seconds without the use of wrenches.
The patented PLC controlled pressure package, along with the Airmo expansion tooling, is a complete, extremely reliable, tube expansion system. This method of expansion works well where hairpin tubes are used, allowing a single operator to perform expansions. This saves many labor hours while maximizing production. The hydro expansion process is successfully being used with a variety of tube materials including copper, stainless steel, CuNi and titanium.
Contact Airmo for your hydro expansion needs |
