Q. What kind of payment do you accept?
Company’s checks, credit cards (VISA, MasterCard and American Express), personal checks, ACH and wire-transfer.
Q. What is your lead-time after I place a purchase order?
Usually take 2-3 weeks. If it is needed to make a mould, it may take a longer time. For a large production quantity purchase order, say ten thousand pieces, it may take a longer time.
Q. Can I have a free sample of your magnets?
Our company’s policy does not allow us to send out free samples. We keep our operation overhead low, so that we can offer our customers with our quality magnets at very competitive prices.
Q. How do I pick-up the magnets I need, if you do not list the magnet sizes on your webpage?
First, decide the shape and size of magnets, which can server you applications best. Then visit our webpages “How to Choose Permanent Magnet Materials” and “How to Choose a Grade” to decide the material and grade of the magnets you need. Next step is to go to Quotation Request to fill up the form with the information on the magnets and quantity required. After you click the “Submit” button, we will receive your request and provide you with our price quotation. You can also fax your specifications and drawings to us.
Q. How long will it take to receive your price quotation?
Usually take 1-3 working days. However, if we are not able to supply the magnets you need, such as, either the size is too big, or the shape is too complicated, we may not provide you with our price quotation.
Q. Can I have a catalog of your magnets?
Unfortunately, we do not print product catalogs. Please refer to above question to decide the magnets you need.
Q. Do you supply permanent magnets with standard sizes?
No. From our experience in serving our customers, we realized that each customer has his/her own requirement for the magnets in terms of materials, shape, size, coating, and tolerance for his/her applications. Therefore, it is difficult for us to keep all of so-called “standard size” magnets in our inventory. We can supply the magnets meeting your custom demand in a short turn-over time.
Q. What is your minimum order in value?
Q. Can we visit your company/factory before place the order?
Yes. Welcome anytime.
Q. How does your factory do regarding quality control?
Quality is priority. We always attach great importance to quality controlling from beginning to end.
Q. What is magnet assembly?
Magnetic assemblies are components or devices or systems that combine magnetic & non-magnetic materials with the aim of high magnetic field and cost reduction. Magnetic assembly is used for a huge variety of applications including precast, automation, holding, green energy, tools, etc.
Q. What affects the strength of a magnet?
The maximum energy product of a magnet is measured in Mega Gauss Oersteds (MGOe). This is the primary indicator of a magnets ‘strength’. In general, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application.
Q. How many types of magnets are there?
Types of Magnets. The three types of magnets are temporary, permanent, and electromagnets. Magnets are categorized by their source of magnetism. Temporary magnets become magnetized in the presence of a magnetic field.
Q. How long will a magnet stay magnetized?
Sintered NdFeB magnets will remain magnetized indefinitely. They experience a minuscule reduction in flux density over time. As long as their physical properties remain intact, neodymium magnets will likely lose less than1% of their flux density over 100 years.
Q. What is a pot magnet?
A pot magnet is a permanent magnet encased in a steel shell, which is sometimes called a pot, hence the name “pot” magnet. A permanent magnet emits a magnetic field without the need for any electricity. Pot magnets are often used as magnetic bases and magnetic holders for large supermarket ceiling signs.
Q. How does a pot magnet work?
A pot magnet works by attaching itself to ferromagnetic materials with the help of its magnetic field, or to non-ferromagnetic materials with the help of fittings (such as studs and threaded holes) on the top of its steel shell. … The larger the pull force of the pot magnet, the more material it can attract.
Q. What is the strongest magnet?
The strongest permanent magnets in the world are neodymium (NdFeb) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd2Fe14B structure.
Q. What is a cup magnet?
Cup Magnets. Cup magnets are magnets inset into steel cups that assist in mounting and increase their holding force. They are commonly used in holding applications where they are attached to a surface with a countersunk screw.
Q. What is rubber coated magnets?
Rubber coated Neodymium magnets give great durability and high friction. The rubber coating acts as a protection for the Neodymium Magnet inside against chipping and exposure to liquids. Rubber coated neodymium magnets are used in many holding applications especially when it is on a delicate surface.
Q. How is the durability of rubber coated magnets?
As the magnet is completely covered by rubber coating, the magnets are water-proof as well as incredibly resistant to damage., also the magnet is very durable and will not easily break like a normal magnet. Rubber coated neodymium magnets give great durability and high friction to keep them from slipping on surfaces.
Q. What is deep pot magnet?
A deep pot magnet is a magnet system. The magnet is housed in a cylindrical housing, which is usually made of galvanized steel or the copper-zinc alloy brass.
Q. What’s the application of deep pot magnet?
The application possibilities for deep pot magnets are very diverse: Crafts / Industry / Semiconductor Technology / Warehousing / Office / School / Research.
In addition to commercial applications, the magnet systems also serve as a practical aid in the private sector for attaching or fixing objects. The deep pot magnet systems are, however, optimized for use as industrial magnets and are preferably used in mechanical engineering or tool construction.
Q. How to use deep pot magnets?
When installing the deep pot magnets make sure that it is directly surrounded by iron. In this case, the adhesive force is reduced by up to 15 percent. It does not matter whether the casing is galvanized or brass. A minimum distance of several millimeters between the housing and the surrounding iron solves this problem. The specifically recommended distance varies but is usually specified by the manufacturers. The adhesive force can also decrease if the magnets are used on uneven, painted, or thin surfaces.
Q. What is channel magnet?
Channel Magnetic Assemblies are created using ceramic magnets clad in a steel channel. … The maximum increase in power is obtained when magnets are sandwiched between two plates. For example, A 0.187″ thick x 0.750″ wide x 1″ long rubber magnet has 4 oz. of pull strength.
Q. What’s the common applications of channel magnet?
• Door latches
• Vehicle license plate holders
• Blueprint holders
• Sign and banner holders
Q. What’s the holding and pull strength of channel magnet?
Channel assemblies are up to 32 times stronger than ceramic magnets by themselves. Pull strength is tested on a flat steel plate 3/8 inch thick. The pull may vary depending on the surface it is attracted to, for example, if the steel is coated, rough or rusty. We recommend that you obtain a sample to test and confirm the actual pull / holding capability when used in your application.
Q. What’s the principle of channel magnet?
The channel magnets are embedded in a U-shaped steel profile. The steel reinforces the adhesive force of the magnet if the magnet touches a thick iron surface directly. If there is no direct contact with the counterpart or when the iron sheet is thin, painted or rough, the magnet’s adhesive force is much weaker.
Q. What is shuttering magnet?
It consists of a NdFeB magnet unit and a steel casing that forms a certain designed magnetic circuit. By pressing the button on top of the steel casing, this magnetic force is activated so that this magnet can fasten the formwork to the steel table tightly.
Q. What’s the use of shuttering magnet?
These permanent holding magnets can be used to hold steel panels, beams, fences and molds in place.
Shuttering magnets have a high holding force. To achieve this, good contact with the surface is necessary, since even a small air gap will reduce the holding force.
Q. What’s the advantages of a magnetic shuttering systems?
Low weight, however, strong attractive force.
Time-saving to organize and customize a production process.
Cost-saving on the removal of the form.
Q. What’s the capabilities of shuttering systems in magnetic formwork?
The owners of such systems easily can customize as a magnetic formwork system allows producing concrete products of any shape. The system allows considerably saving time and cost for setting up, maintenance, and production performance. Magnetic systems are easy to organize and customize the production of the concrete products in case of necessity to make any changes to the project. In addition, the problem of concrete inserts fixing, blockout and bevel modeling are solved due to the system capabilities.
Q. How to use pot magnet with through hole?
To use a through-hole pot magnet, a bolt needs to be placed through the hole until the head touches the top of the steel shell, with the magnetic face pointing outwards away from the ferromagnetic surface. The bolt is then attached to the ferromagnetic material with a nut to hold it securely in position.
Q. What types of pot magnet are available here
Pot Magnet with External Threaded Stud / Boss Mounting
Pot Magnet with Internal Threaded Mounting (Deep Pot)
Pot Magnet with Countersunk Mounting (Shallow Pot)
Pot Magnet with Through Hole Mounting
Pot Magnet with Internal Threaded Stud / Boss Mounting
Pot Magnet with Threaded Through Hole Mounting
Rubber Coated Magnetic Pots
Round Base Magnet
Q. How does a pot magnet differ to a regular magnet?
Magnetism is confined to one face only, where it is concentrated to give the maximum holding force possible for the size of the magnet. They are more resistant to chipping and cracking as they are protected by their steel shell.
Q. What is pot magnet with internal thread?
A threaded bolt with an internal thread is fixed on the pot, which makes it easy when you need to mount the pot magnet onto some other parts. The size of the thread can be customized.
Q. What’s the use of internal threaded pot magnets?
Internally threaded stud pot magnets can be used as part of a light fitting for magnetic downlight. The magnet is attached to the end of the light to hold it onto the metal in a ceiling.
Q. What is pot magnet with countersunk?
The magnetic core of pot magnets is made of magnets that have a centered borehole and countersink which makes it possible to screw them firmly.
Q. A little history….
The ancient Greeks and Chinese discovered that certain rare stones possessed mysterious and attractive properties. These stones could attract small pieces of iron in a magical way, and were found to always point in the same direction when allowed to swing freely, suspended by a piece of string, or floating on water. Early navigators used these magnets for the first compass to help them determine their direction while at sea. The name MAGNET comes from Magnesia, a district in Thessaly, Greece where it is believed that these first “lodestones” were mined.
Over the millennia magnets have evolved into the high strength materials we have today. It was discovered that by creating alloys of various materials we could create similar effects to those found in lodestones, and increase the level of magnetism. It was not until the 18th century that the first man-made magnets were created, and progress in creating stronger magnetic alloys was very slow until the 1920s when Alnico (an alloy of nickel, aluminum and cobalt) was formulated. Ferrites (also known as Ceramics were created in the 1950s and the Rare Earths in the 1970s. Since then, the science of magnetism has exploded exponentially and extremely powerful magnetic materials have made possible the myriad devices that we have today.
Q. What is a magnet?
Certain materials, such as iron or steel, can be made magnetic by placing them in a strong magnetic field. Permanent and temporary magnets can be made in this manner.
The atoms forming materials that can be easily magnetized such as iron, steel, nickel and cobalt are arranged in small units, called domains. Each domain, although microscopic in size, contains millions of billions of atoms and each domain acts like a small magnet. If a magnetic material is placed in a strong magnetic field, the individual domains, which normally point in all directions, swing around into the direction of the magnetizing field. When most of the domains are aligned in the field, the material becomes a magnet.
Q. What does a magnet do?
Magnets do the following things:
Attract certain materials – such as iron, nickel, cobalt, certain steels and other alloys;
Exert an attractive or repulsive force on other magnets (opposite poles attract, like poles repel);
Have an effect on electrical conductors when the magnet and conductor are moving in relation to each other;
Have an effect on the path taken by electrically charged particles traveling in free space.
Based on these effects magnets transform energy from one form to another, without any permanent loss of their own energy. Examples of magnet functions are:
Mechanical to mechanical – such as attraction and repulsion.
Mechanical to electrical – such as generators and microphones.
Electrical to mechanical – such as motors, loudspeakers, charged particle deflection.
Mechanical to heat – such as eddy current and hysteresis torque devices.
Special effects – such as magneto-resistance, Hall effect devices, and magnetic resonance.
Q. How are magnets made?
Based Modern magnet materials are made through casting, pressing and sintering, compression bonding, injection molding, extruding, or calendaring processes. Once manufactured, magnets often need to be further processed by grinding or other machining processes, and then assembled into a next level assembly.
Q. What are the different types of magnets available?
There are 3 types of magnets: permanent magnets, temporary magnets and electro-magnets. Permanent magnets emit a magnetic field without the need for any external source of magnetism or electrical power. Temporary magnets behave as magnets while attached to or close to something that emits a magnetic field, but lose this characteristic when the source of the magnetic field is removed. Electro-magnets require electricity in order to behave as a magnet.
Q. What is a permanent magnet?
Modern permanent magnets are made of special alloys that have been found through research to create increasingly better magnets. Permanent magnets have a magnetic field that does not turn on and off like electromagnets. The most common families of magnet materials today are ones made out of Aluminum-Nickel-Cobalt (Alnicos), Strontium-Iron (Ferrites, also known as Ceramics), Neodymium Iron Boron (NdfeB magnets, sometimes referred to as “super magnets”), and Samarium Cobalt. The Samarium Cobalt and Neodymium Iron Boron families are collectively known as Rare Earths.
Q. What are Rare Earth Magnets?
Rare Earth magnets are magnets that are made out of the Rare Earth group of elements. The most common Rare Earth magnets are the Neodymium Iron Boron and Samarium Cobalt types.
Q. What are Magnetic Poles?
Magnetic Poles are the surfaces from which the invisible lines of magnetic flux emanate and connect on return to the magnet.
Q. What are the standard industry definitions of “North” and “South” Poles?
The North Pole is defined as the pole of a magnet that, when free to rotate, seeks the North Pole of the Earth. In other words, the North Pole of a magnet seeks the North Pole of the Earth. Similarly, the South Pole of a magnet seeks the South Pole of the Earth.
Q. How can you tell which is the North Pole if it is not marked?
You can’t tell by looking. You can tell by placing a compass close to the magnet. The end of the needle that normally points toward the North Pole of the Earth would point to the South Pole of the magnet.
Q. What does “magnetic orientation direction” mean?
Most modern magnet materials have a “grain” in that they can be magnetized for maximum effect only through one direction. This is the “orientation direction”, also known as the “easy axis”, or “axis”.
Un-oriented magnets (also known as “Isotropic magnets”) are much weaker than oriented magnets, and can be magnetized in any direction. Oriented magnets (also known as “Anisotropic magnets”) are not the same in every direction – they have a preferred direction in which they should be magnetized.
Q. How do lines of magnetic flux behave?
The general answer is “Predictably”! Lines of force are three-dimensional, surrounding a bar magnet on all sides.
Likepoles repel and unlike poles attract. When opposite poles of a magnet are brought together, the lines of force join up and the magnets pull together.
When like poles of a magnet are brought together, the lines of force push away from each other and the magnets repel each other.
Q. What is the strength of the earth’s magnetic field?
The surface field strength of the Earth is about 0.75 gauss, but it varies by as much as 10% depending on the strength of the “crustal field”. A range from 0.85 to 0.60 can be found across the globe. Geomagnetic storms can cause changes of between 1% to 5% that last from hours to a day or so.
Q. What are electromagnets?
Electromagnets are produced by placing a metal core (usually an iron alloy) inside a coil of wire carrying an electric current. The electricity in the coil produces a magnetic field, which is conducted through the iron core. Its strength depends on the strength of the electric current and the number of coils of wire. Its polarity depends on the direction of the current flow. While the current flows, the core behaves like a magnet, but as soon as the current stops, the magnetic properties are lost. Electric motors, televisions, maglev trains, telephones, computers and many other modern devices use electromagnets.
Q. Is there such a thing as a temporary magnet?
Soft iron and certain iron alloys can be very easily magnetized, even in a weak field. As soon as the field is removed, however, the magnetism is lost. These materials make excellent temporary magnets that are used, for example, in telephones and electric motors.
Q. How do I order magnets?
To efficiently order magnets, you need to have a good idea of what you want to accomplish. Here are a few items that you will need to consider:
General nature of application – Holding, moving, lifting, etc.
Shape of magnet desired – Disc, Ring, Rectangle, etc.
Size of magnet desired – Diameter, length, width, height, etc.
Tolerances – what variation in dimensions is allowed.
Conditions magnet will be used in – Elevated temperature, humidity, outside, inside, etc.
Strength of magnet required – In pounds of holding force, Gauss, etc.
Magnet should cost no more than? – This will eliminate certain materials from consideration.
Quantities you will need.