Whiteboard Magnet

Ref Price:

Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 4000 Pieces or more pc

Supply Capability:: 200 Tons per Month or more pc/month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Specifications

1.whiteboard magnet;

2.colorful magnetic memo button;

3.20mm,30mm,40mm;

4.10pieces per blister pack

whiteboard magnet

size:round,oblong,star,hear,special forms accepted;

diameter:20mm,30mm,40mm;

materials:plastic/transparent plastic + ceramic/ferrite magnet

logo: printing can be done on the magnet holder or on the blister package,which is optional

MOQ:400 blister bags for one design;

ideal for office and school holder stationery;

can be used as gifts for the children in the kindgarten for these itmes are no harm parts;

package:10pcs into one blister plastic bag,100bags into one middle carton,5.6kg for the middle carton,

4 middle cartons into one outer carton,about 23kg for one outer carton.

Q: any material which is thin, can insulate the magnetic field?: Not directly and not if static. A changing magnetic field generates electrical currents in metal circuits and if these circuits have resistance (and most do) then heat is generated.

Q: Have u heard of dielectric magnetic materials? some examples plz?: Permanent Magnets do not conduct electricity (maybe ferromagnetic materials which is temporarily magnetized by electrical current through coils) and though you can't really call them dielectric materials. Dielectric is related to electric fields as poor conductive mediums. There are also poor conductive mediums of magnetic field. You cannot relate magnetism to dielectrics since dielectrics is related to polarization index and so related to electric field and electricity. You can make magnets from electricity vice versa. You either could have a conductor or a magnet.

Q: I am unsure as to whether or not the metal that moves within said field must be ferromagnetic.: It needn't be ferromagnetic. The changing magnetic field will produce an electrical current in the copper. Feromagnetism is the metal being brought near the magnetic field taking on a strong magnetic field.

Q: You have been given the task of describing the theory of magnetic domains to a class of 5th graders. You have enough large paper arrows to give one to each student. Describe your plan to show them the domain nature ofA non-magnetic materialA permanent magnetAn electromagnet: This sounds fun. You don't even need arrows really. This is how I'd do it: Put all the students (the more the better--like 100 or more would be great) in a clump in an open space--go outside if need be. Tell them to close their eyes and turn in circles until everyone is facing in a random direction. Now tell them that they are like atoms with magnetic dipoles. No arrow required, just say the dipole moment is in the direction they are facing. If they are facing in random directions, their alignment describes a non-magnetic material. Now tell them that in a permanent magnet, a dipole moment tends to line up with it's neighbors. But it costs energy to move, so it doesn't want to move more than necessary. So tell them to rotate as little as possible to line up with (face the same direction as) their neighbors. Move slowly and no talking. If it works out, you should have clumps of students facing a certain way--those clumps are like domains. Finally, in an electromagnet, an extermal field is induced, which is so strong that it compels all the dipoles to allign with it. So on your command, the students should snap to and line up in your chosen direction. If the material is permanently magnetic, the moments (students) will stay aligned even after the field is removed, because of the influence of their neighbors all facing that way. However, if the material is not magnetic, then thermal fluctuations (like fidgetty students that can't stand still) will have the students facing randomly a short time after the external field is removed.

Q: I have found square red brass wire that I believe is acceptable for my application as I need it to both be slightly magnetic as well as conduct electricity. There are companies that will do this for you, but the cost of having a company do this for you is at least two times the cost of the wire, depending on who you talk to.Conductivity needs to be better than aluminum (aluminium if your outside the US) and it needs to induce current from a varying magnetic field.: If you have a square wire that is magnetic, it can't be brass, copper or aluminium. It would probably be steel. Magnet wire is copper, round in section, and enamel insulated. It is definitely not magnetic. What it does produce is a magnetic field around itself, like any conductor, when current flows in it. You leave me wondering why it should be slightly magnetic for your application, for if copper wire is wound onto a steel or iron or other magnetic material, IT will become magnetic when powered (with DC). It will retain some magnetism when de- powered. Why would you want the wire to be magnetic? Magnet wire will produce a similar current by induction if placed in a varying magnetic field. It seems to me an ideal thing to use. Plus, I'd hate to try working with a square section wire, I think the corners would be highly susceptible to shorting.

Q: can anybody give me some ideas for a science project cause i got one due on monday the 7 and i dinnt do i yet: Take some pans or cookie sheets. located an equivalent quantity of distilled water (or tape water no count if that's all you have) in each and every pan. degree the cost of evaporation at room temperature. Create a formula which correlates floor section with cost of evaporation. ingredient out that that's the soul of real technologies. You derived a organic and organic regulation which may well be retested and independently shown.

Q: difference between diamagnetic, paramagnetic, and ferromagnetic materials?: Ferromagnetic materials are the three metals that are always magnetic, like iron. They can retain a magnetic field in the absence of a magnetic field as long as they were once in contact with a magnetic field. They have a memory when it comes to magnetism. Paramagetic materials show magnetism in the presence of a magnetic field, but lose their magnetic properties once the external field is removed. Diamagnetic materials create a magnetic field in opposition to an externally applied magnetic field.

Q: I want to know what chemical(s) and materials makes up a magnetic sand?: Magnatite and Hematite

Q: I have two magnets. What can I put between the magnets, so that they will not repel or attract as long as it is between the magnets?: I know of no non-magnetic material that will effectively block a magnetic field. The only magnetic shields I know of are magnetic materials themselves. These will disperse the magnetic field between the magnets, but then, the attraction to the shield from both magnets will still be present. If such a material were to be found, I'm sure a perpetual motion machine would soon follow.

Q: All materials exhibit diamagnetism. Those that exhibit paramagnetism or ferromagnetism overpower their diamagnetic natures.: The diamagnetic effect is very weak. That is where all the spins are paired up. The paramagnetic effect is much stronger . and the ferromagnetic effect is an aggregate effect of macroscopic spin domains, so it's huge.

We are a leading manufacturer and supplier of magnetic products, such as magnetic materials, reductive iron powder and injection magnets. We take pride in a number of senior engineers and technicians with over 20 years of experience in this sector as well as advanced equipment and the top-ranking management system, which make it possible for us to provide our customers with high quality products, competitive prices and first-class service. We sincerely hope to establish long-term business relationships with customers from at home and abroad on the basis of equality and mutual benefits and seek common development.

1. Manufacturer Overview

Location	Guangdong,China (Mainland)
Year Established	2009
Annual Output Value
Main Markets	11.11% North America 11.11% South America 11.11% Eastern Europe 11.11% Southeast Asia 11.11% Oceania 11.11% Mid East 11.11% Eastern Asia 11.11% Western Europe
Company Certifications	license 1

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port
Export Percentage	91% - 100%
No.of Employees in Trade Department
Language Spoken:	English, Chinese, Japanese
b) Factory Information
Factory Size:	5,000-10,000 square meters
No. of Production Lines	6
Contract Manufacturing	OEM Service Offered
Product Price Range