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Employing Lifting Magnets For Material Handling Operations

Updated: July 12, 2012, 07:22:47|Print this page|Close window

These lifters use magnets to carry significant materials securely while not requiring clamps, slings and different holding equipment. they're most helpful in things during which another technique of fabric handling would be tough, dangerous, or expensive.

Lifting magnets vary widely in size. Usually, the larger ones are hung from a series on a crane that's able to move the lifting magnet into the situation necessary to retrieve the fabric. this sort of lifter may be used for a large kind of functions, together with automobile junking, construction, and demolition and cleanup.
How Lifting Magnets Work

There are 2 forms of lifting magnets: permanent magnets and electromagnets. Permanent magnets use permanently magnetized material to form a magnetic field. they'll be used to raise hundreds up to two,200 pounds. These lifters may be moved simply to numerous work locations. However, one disadvantage of permanent magnets is that they need a restricted lifting capability. If a variable lifting capability is needed, the optimum alternative is that the electromagnetic lifter.

Electromagnetic lifters use an energized electrical coil wound around a steel core to orient magnetic domains inside ferrous materials in an exceedingly common direction, thus, making a magnetic field. not like permanent magnets, electromagnets need a relentless DC power supply. Hence, an influence failure may be a security issue with electromagnets unless an emergency power or backup offer is integrated with this sort of lifting system.

Permanent magnets are favored (1) when electricity isn't accessible, (2) when power failures are a standard incidence, or (3) when adjustable magnetic force isn't necessary. Electromagnets are the selection for applications where varying strength or remote magnet management is needed.
Suitable Applications for Lifting Magnets

Smooth, Flat Surfaces: Permanent lifting magnets are operated by hand. They produce a really sturdy however low magnetic field so that they are sensitive to air gaps between the magnet and also the load. When an air gap will increase, the magnetic force are considerably reduced. They work best on sleek, flat surfaces instead of rough and irregular ones.

Type of Material: whereas ferromagnetic materials are inherently magnetize-able, paramagnetic materials, like aluminum and magnesium don't seem to be. (Diamagnetic materials, like copper, lead, and silver, don't magnetize.) For materials apart from iron-based materials, a discount issue should be calculated to see the effective holding force.

Thickness of Material: The thickness of the fabric to be lifted additionally plays a task think about choosing a lifting magnet. Thick materials are the most effective candidates. Materials thinner than the specification for the lifting magnet can have a far lower level of holding force.

Lifting magnets save time by reducing and typically eliminating blocking and slinging. they'll additionally eliminate or decrease waste. They cut back product injury commonly caused by chains, hooks, and different mechanical grabs. however the numerous benefits of lifting magnets are simple operation and cost-effectiveness.