magical ring round ring magnet ndfeb strong magnet ancient pattern magnetic ring magical props creative toys

strong magnetic magic ring is one of the necessary products for every magician. it can be used in different magic, as long as you give full play to your thoughts.image and creativity, a small magnetic ring can have endless changes, and can also be applied to the previous magic, play packageincluding: taking things from the air, coins in the air, moving things with ideas, moving instantly, coins wearing glass, bottle caps entering bottles, coins wearing bottles, time pauses, etc.

transparent organic box shockproof packaging, exquisite and elegant ~ send teaching!

cyril can use this prop to perform many magic tricks!
   this is just a tool that can be used in different magic tricks. when you have this ring, you can use it for more than watch show

the magic effect of victory, and you can apply it to different magic tricks.

large inner ring diameter: 20mm

medium inner ring diameter: 19mm

small inner ring diameter: 18mm

because the size of the magnetic ring is measured by hand, some errors will occur, and we will try our best to minimize them.

i hope you can buy itto understand!

iron boron magnet: ndfeb is the magnet with the highest commercial performance found at present, which is called magneto. it has extremely high magnetic properties and its maximum magnetic energy product (bhmax) is more than 10 times higher than ferrite (ferrite). therefore, it is also commonly known as: strong magnetic, magnetic steel, etc. its own mechanical processing performance is also quite good. the working temperature can reach up to 200 degrees celsius. and its texture is hard, its performance is stable, and it has good cost performance, so it is widely used. but because of its strong chemical activity, its surface layer must be treated.

   ndfeb permanent magnet material is a permanent magnet material based on intermetallic compound nd2fe14b. compared with casting al-ni-co series permanent magnet materials and ferrite permanent magnet materials, ndfeb has extremely high magnetic energy product and coercive force, and can absorb 640 times of its own weight. the advantage of high energy density makes ndfeb permanent magnet materials widely used in modern industry and electronic technology, thus making instruments, electroacoustic motors, magnetic separation magnetization and other equipment small, lightweight, thin becomes possible. material characteristics ndfeb has the advantages of high performance-price ratio, good mechanical characteristics and easy cutting and processing. the disadvantage lies in low curie temperature point, poor temperature characteristics and easy pulverization and corrosion, only by adjusting its chemical composition and adopting surface treatment methods can it be improved to meet the requirements of practical application.
 manufacturing process ndfeb is manufactured by powder metallurgy, which will contain a certain proportion of raw materials such as neodymium, dysprosium, iron, cobalt, niobium, praseodymium, aluminum, copper, boron and iron are smelted into medium frequency induction melting furnace by alloy steel ingot, then broken into 3 ~ 5cm powder, and pressed and formed in magnetic field. the formed green body is sintered in vacuum sintering furnace and tempered for aging, in this way, a permanent magnet blank with certain magnetic properties is obtained. after grinding, drilling, slicing and other processing procedures, the finished ndfeb product required by users is obtained after surface treatment.

postscript:

1. all products in this store are taken in kind. if there are some chromatic aberration due to limited shooting technology, the actual product shall prevail. the ratio between the picture and the actual product is not one to one. please see the size description before bidding.

2. please check whether it is the product you want before purchasing, and purchase it after confirmation, so as not to cause unnecessary trouble to both buyers and sellers! if you have any questions before purchasing the product, please ask for details! once the purchase is deemed acceptable, the cancellation of the product fair after purchase will affect alipay usage! i believe everyone knows it!

3. if you receive the product, please confirm and praise it in time. it is a very painful thing for the system to automatically confirm and praise it. please cooperate with me. this is my affirmation and encouragement. if you have any questions, please contact me in time. my mobile phone will welcome me for 24 hours.