Archive for the 'Magnets' Category

Industrial Magnets: Their Many Manufacturing Uses

Magnets have many uses in the lay person’s everyday life, from the basic refrigerator magnet that we use to keep pictures or bills in plain sight, to complicated magnetic devices used in automobiles, cell phones, and medical equipment.  Did you know, however, that industrial magnets touch our lives every day as well?  For those of us who are not acquainted with the many manufacturing processes of the goods we use on a daily basis, the use of industrial magnets may be a mystery.

Conveyor magnets are one of the most commonly used types of industrial magnets.  During many manufacturing processes, products are moved from one location or process to the next via conveyor belt systems.  Conveyor moved material often requires cleaning or sorting during transport.  This is particularly true of plastic processing, wood processing, and food production.

In plastic recycling, for example, the plastic material is fed into a grinding machine.  It is imperative that no metal objects be fed into the grinder.  In this case, if the plastic material is moved into the grinder via conveyor belt, a conveyor magnet becomes a vital tool in the process, as it literally picks the metal debris up off the conveyor belt.  The same is true of wood processing operations.  If the wood is being fed into a grinding machine, as is often the case in the manufacturing of particleboard or wood and resin mixed products, then it is very important that metal objects aren’t introduced into the grinding heads of the machinery.  Industrial grinding heads are very expensive, and if they become damaged, they are very costly to repair, not to mention lost revenues because of production delays during the period of time that the machinery is out of commission.

Personal safety is another important consideration.  Most grinding machines operate at very high RPMs.  If a metal object falls into such a grinding machine, it can be thrown great distances and can easily injure the machine operator.  The cost of adding a conveyor magnet to such an operation is usually far less expensive than repairing broken equipment or dealing with a personal injury on the job.

Food production is another example of a manufacturing process that can benefit from the addition of a conveyor magnet.  Foods for both human and livestock consumption are oftentimes transported on conveyor belt systems.  In the case of agricultural livestock feeds, grain is often mixed with specific feed additives to produce high protein mixes for cattle, pets, and other animals.  Human foods are processed in a similar manner; various types of grains are processed, mixed, and then extruded into cereals and other mixes for specific recipes and cooking purposes.  In these situations, obviously it’s important to keep metal debris out of the food because it is unfit for consumption.

In the past, many manufacturing facilities would assign an individual to the job of quality control.  This person would be responsible for sitting next to a conveyor all day long, and manually sorting through the materials and removing metal debris.  The problem in this case is always operator fatigue and the element of human error.  The creation and addition of conveyor magnets in recent decades has greatly improved these processes and the quality of the materials being produced.  With the addition of a conveyor magnet, the only operator requirement is to periodically clean off the metal debris from the magnet and restart the conveyor process.

Magnets have many uses that affect all our daily lives.  Some of us have been directly impacted by the industrial use of magnets, for example those persons working in commercial settings where a magnet is utilized.  Others of us are indirectly affected; perhaps we consume some of the goods that pass through such facilities.  Either way, the use of industrial magnets has been greatly beneficial to the manufacturing world, and their impact continues to improve our lives every day.

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Magnets for Health and Healing: Fact or Myth?

Many studies credit the use of magnet technology for improved health and healing.  However, there are just as many doctors and scientists who disagree with these theories, believe that magnet therapy is more of a myth than a fact.  Do magnets have any impact on health and healing?  While the scientific community is still unsure, we’ll explore some of the various theories regarding how magnets may work to improve health or physiology.

There is a general agreement among scientists that magnets can improve blood circulation.  Though scientists aren’t exactly sure why, one theory is that because blood contains iron, the magnetic field aligns the iron molecules, thus allowing for improved blood flow through the veins and arteries.  Another theory would suggest that magnets assist with the way information is transferred through the body.  Nerves move information from every part of the body to the brain with minor electrical impulses.  Magnets may have an effect on the way nerves transfer that information, promoting faster movement of brain stimuli to promote improved circulation.

Whatever the reason, magnets do seem to help with circulation, which is a major health benefit.  Good circulation means that oxygen is moving efficiently to all parts of the body, including extremities such as hands and feet.  Improved circulation also helps to remove toxins from the blood by transporting them to the kidneys and then the urinary tract.  Magnets are believed to help the body with the removal of lactic acid, a toxin that is commonly associated with joint pain and arthritis.

In 2004, the British Medical Journal conducted a trial of magnetic bracelets for healing purposes.  One group of individuals received magnetic bracelets, while another group received placebos.  The study found that the group that received the magnetic bracelets saw more improvement in the condition of arthritis than the group with the placebos did.

In the United States there have been many studies on the health effects of magnets.  Just to name a couple, in 1997, Dr. Carlos Valbona of the Baylor College of Medicine published a study indicating that magnetic therapy reduced pain in 76% of the patients studied.  In January 1999, a study conducted by Dr. Michael Weintraub was published in the American Journal of Pain Management in which Dr. Weintraub found a significant improvement in diabetic foot pain among patients who wore special magnetic socks.

Today, magnetic therapy devices are licensed in Japan and throughout other Asian countries.  Magnetic therapy is also finding a place in Russia, many European countries, and Australia.  In the U.S. alone, it is estimated that over a billion dollars is spent annually on magnetic devices for health improvement.  This, of course, has captured the inspiration of many business savvy entrepreneurs.  There are literally hundreds of different magnetic therapy devices available on the market today, such as magnetic mattress pads and inserts, pillows, body wraps, belts, back braces, bracelets, necklaces, and other jewelry.  And now you can even purchase magnet therapy collars for dogs and cats, too!

These products are readily available online through a number of retailers.  Undoubtedly, each supplier will offer a host of diseases that will be cured and just as many guarantees and testimonials as evidence.  For those individuals who have been helped by magnet therapy, they are believers.  Scientific studies such as the ones we mentioned, that support the evidence of magnet therapy for healing purposes, will only serve to build their case, and no amount of disagreeing evidence can sway their belief.

As for whether or not magnets can really improve health, no one is quite for sure yet.  One thing is for sure, though, doctors and scientists will continue to evaluate this as a field of study, and new discoveries will certainly be made in the future.  Until then, patients can make their own decision about whether magnet therapy is right for them or their loved ones.

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The History and Legend of Magnets

Magnetism was discovered thousands of years ago, and magnets have been used for many purposes ever since.  However, there is a great deal of mystery and controversy surrounding the discovery of magnetism.  We’ll explore some of the various legends about magnets, including how they were discovered and some of their first uses.

Around approximately 2500 B.C.E., a young shepherd boy named Magnes lived near Mount Ida in Greece, a mountain commonly mentioned in Greek mythology.  According to the legend, Magnes used to wear sandals with iron soles.  He often found it difficult to climb up the mountain where he tended his sheep because of the excessive amounts of natural magnetic mineral, or lodestone, that was present in the rock and soil of the mountain.  The Greeks called the material “magnes” in honor of his discovery, and this is how we have come to use the word “magnet” today.

The first historical use of lodestones was the development of the compass around the 8th century AD by the Chinese.  The first recorded use was documented by Zheng He of the Yunnan province.  Between the years 1405 and 1433, Zheng He recorded his voyages across seven oceans.  The compass Zheng used had markings for points of the constellations found by the use of the Sextant, but the center of the compass was a spoon shaped device made from lodestone.  In later centuries, the lodestone was replaced with a metal needle that was magnetized by vigorously rubbing it against a piece of lodestone.  From Zheng He’s time forward, no wise sailor would venture out into the ocean without two critical navigational instruments, the compass and the sextant.

The Greek philosopher Aristotle spoke about magnets more than 300 years before the birth of Christ.  He wrote about magnets and their use in pain reduction.  During that time, it is said that doctors used magnets therapeutically to reduce muscle spasms and treat gout.

Cleopatra reportedly wore a piece of magnetic jewelry on her forehead to suppress wrinkles and preserve youth.  It is said that she believed so strongly in the value of magnetic power, that she routinely slept on bed constructed of lodestone to enhance her youthful appearance.  Who knows how well this did or did not work, given that she only lived to the age of 39.

In 1777 A.D., France’s Royal Society of Medicine conducted an in depth study about the history of magnets and their use in medical practice.  In spite of some skepticism and ridicule from mainstream medical authorities of that time, the Royal Society concluded that magnets could be used medicinally to cure back and neck pain, headaches, circulation problems, sore throats, and numerous other complaints.

Prior to 1820, the only magnetic substances know to man were lodestone and other metals that had been rubbed against a lodestone to magnetize them.  In 1820, a scientist named Hans Christian Oersted, a professor of Science at Copenhagen University, noted that every time he switched on an electric current near a compass, the direction of the needle moved.  Over the next several months he worked diligently to try to explain and understand the logic of what he had observed.  His studies led to the electromagnet as we know it today.  Though Hans Christian Oersted did not develop the electromagnet, his experiments directly led to this new and important technology and a new found understanding of physics.

From the earliest recorded knowledge of lodestone and magnetism thousands of years ago, our understanding of magnets has grown exponentially.  Today magnets play a role almost every technologically advanced device we use, including computers, automobiles, and cell phones.  While we do not know what new magnet technologies the future will hold for human kind, we can be certain of one thing.  As our understanding and knowledge of magnets continues to improve, the way we harness and utilize magnetism will continue to expand and develop as well.

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