Artificial Magnets: divided horseshoe magnets and bar magnets, the most common is that we live in, where the more popular horseshoe magnet. Means the side of a single magnet magnetic magnets weak magnetism other side, the method is treated with a special double-sided galvanized steel side magnets package, and it was wrapped side of the magnetic will be masked to the other side is refracted force, other side of the magnetically enhanced. If the occasion requires only one side is magnetic, the other side may cause damage or any magnetic interference; some occasions, such as a magnet on the box side magnetic only need one side and dispensable, there is no use of magnetic, Such single-sided magnet will greatly reduce costs and conserve magnetic materials. Like single-sided magnet magnetic refraction refraction of the signal satellite pot or pan flashlight light refraction of light, its refraction effect is mainly determined by the following three aspects: 1. Material: material selection and thickness, as well as the spacing of the magnet and the material is closely relationship. Pure iron is easy MFL, with a special treatment refraction will increase, but not 100% shielding material developed, but different manufacturers do material effect is different.
2. Angle: According refraction, curved material works best material refraction angle larger loss.
3. Space: the magnetic field lines in the air as the cell phone signal, you need to have space to refracted. Torch light bulb pot as completely wrapped in, use the effects are bad, because there are plenty of light refraction is loss.
How can we make use of overband magnetic separator the above principle, the magnetic enhancement works best is that many parameters for the best, a lot of manufacturers are doing repeated experiments, such as Xian Guotai magnet factory-sided magnetic treatment best result is enhanced 50% so in areas such as packaging bags will greatly reduce production costs and savings magnetic materials.
Vibrations Screen
2013年9月24日星期二
Magnets classification
Magnets can be grouped into "permanent magnet" and "non permanent magnets." The permanent magnet may be natural products, also known as natural magnet can also be manufactured by hand (the strongest magnets are neodymium magnets). The permanent magnet, and only in certain conditions be magnetic, usually produced in the form electromagnet, which is to strengthen the magnetic field by the current.
Concept
Soft including silicon Grate Magnets and soft core; hard magnetic including Alnico, SmCo, ferrite and neodymium, of which, the most expensive is samarium cobalt magnet, the cheapest is ferrite magnet, NdFeB magnets are the highest performance, but the most stable performance, the temperature coefficient is the best alnico, the user can choose according to the different needs of different hard magnetic products.
We said magnet, generally refers to permanent magnets.
Permanent magnet is divided into two major categories.
The first category
Metal alloy magnets including NdFeB magnet Nd2Fe14B), samarium cobalt magnets (SmCo), Alnico magnet (ALNiCO)
The second category
Ferrite permanent magnet material (Ferrite)
1. It is found in NdFeB magnets commercialization highest performance magnets, known as Magneto, with a high magnetic its maximum energy product (BHmax) higher than ferrite (Ferrite) 10 times or more. Its own machining performance is also quite good. Operating temperature up to 200 degrees Celsius. And its hard texture, stable performance, good price, so its application is extremely broad. But because of its chemical activity is very strong, it must be on its surface coating. (Eg plating Zn, Ni, electrophoresis, and passivation).
2. It is the main raw materials include ferrite magnets BaFe12O19 and SrFe12O19. By law made of ceramic, texture rather hard, is a brittle material, due to ferrite magnets have good temperature resistance, low price, moderate performance, has become the most widely used permanent magnets.
3. Alnico magnet is made of aluminum, nickel, cobalt, iron and other trace metal elements in an alloy. Casting process can be processed into different sizes and shapes, workability is very good. Cast Alnico magnet has the lowest reversible temperature coefficient, operating temperature up to 600 degrees Celsius. Alnico products are widely used in a variety of instruments and other applications.
4. Samarium cobalt (SmCo) overband magnetic separator divided according to different ingredients SmCo5 and Sm2Co17. Because the material is expensive and their development is limited. Samarium cobalt (SmCo) as a rare earth permanent magnet, not only has a high energy product (14-28MGOe), coercivity reliable and good temperature characteristics. Compared with NdFeB magnets, SmCo magnet is more suitable for working in a hot environment.
Concept
Soft including silicon Grate Magnets and soft core; hard magnetic including Alnico, SmCo, ferrite and neodymium, of which, the most expensive is samarium cobalt magnet, the cheapest is ferrite magnet, NdFeB magnets are the highest performance, but the most stable performance, the temperature coefficient is the best alnico, the user can choose according to the different needs of different hard magnetic products.
We said magnet, generally refers to permanent magnets.
Permanent magnet is divided into two major categories.
The first category
Metal alloy magnets including NdFeB magnet Nd2Fe14B), samarium cobalt magnets (SmCo), Alnico magnet (ALNiCO)
The second category
Ferrite permanent magnet material (Ferrite)
1. It is found in NdFeB magnets commercialization highest performance magnets, known as Magneto, with a high magnetic its maximum energy product (BHmax) higher than ferrite (Ferrite) 10 times or more. Its own machining performance is also quite good. Operating temperature up to 200 degrees Celsius. And its hard texture, stable performance, good price, so its application is extremely broad. But because of its chemical activity is very strong, it must be on its surface coating. (Eg plating Zn, Ni, electrophoresis, and passivation).
2. It is the main raw materials include ferrite magnets BaFe12O19 and SrFe12O19. By law made of ceramic, texture rather hard, is a brittle material, due to ferrite magnets have good temperature resistance, low price, moderate performance, has become the most widely used permanent magnets.
3. Alnico magnet is made of aluminum, nickel, cobalt, iron and other trace metal elements in an alloy. Casting process can be processed into different sizes and shapes, workability is very good. Cast Alnico magnet has the lowest reversible temperature coefficient, operating temperature up to 600 degrees Celsius. Alnico products are widely used in a variety of instruments and other applications.
4. Samarium cobalt (SmCo) overband magnetic separator divided according to different ingredients SmCo5 and Sm2Co17. Because the material is expensive and their development is limited. Samarium cobalt (SmCo) as a rare earth permanent magnet, not only has a high energy product (14-28MGOe), coercivity reliable and good temperature characteristics. Compared with NdFeB magnets, SmCo magnet is more suitable for working in a hot environment.
2013年9月21日星期六
Drawer principle
Principle 1: Put more than n objects into n-drawer, then at least one drawer in less than two.
Reference (contradiction): If each object into a drawer at best, the maximum total number of objects is n, rather than title set n + k (k ≥ 1), it is not possible.
Principle 2: Put more than mn (m times n) of n objects into a drawer, then at least one drawer of not less than m +1 objects.
Proof (reductio ad absurdum): If each of m objects into the drawer up, then up into the drawer n mn of objects, Large Neodymium Magnets with the title set does not match, it is impossible.
Principle 3: infinitely many pieces of objects into n drawers, at least one drawer with an infinite number of objects.
Principle 1, 2, 3 are schematic representation of the first drawer.
Reference (contradiction): If each object into a drawer at best, the maximum total number of objects is n, rather than title set n + k (k ≥ 1), it is not possible.
Principle 2: Put more than mn (m times n) of n objects into a drawer, then at least one drawer of not less than m +1 objects.
Proof (reductio ad absurdum): If each of m objects into the drawer up, then up into the drawer n mn of objects, Large Neodymium Magnets with the title set does not match, it is impossible.
Principle 3: infinitely many pieces of objects into n drawers, at least one drawer with an infinite number of objects.
Principle 1, 2, 3 are schematic representation of the first drawer.
Drawer principle
Principle 1: Put more than n objects into n-drawer, then at least one drawer in less than two.
Reference (contradiction): If each object into a drawer at best, the maximum total number of objects is n, rather than title set n + k (k ≥ 1), it is not possible.
Principle 2: Put more than mn (m times n) of n objects into a drawer, then at least one drawer of not less than m +1 objects.
Proof (reductio ad absurdum): If each of m objects into the drawer up, then up into the Magnetic Grate n mn of objects, with the title set does not match, it is impossible.
Principle 3: infinitely many pieces of objects into n drawers, at least one drawer with an infinite number of objects.
Principle 1, 2, 3 are schematic representation of the first drawer.
Reference (contradiction): If each object into a drawer at best, the maximum total number of objects is n, rather than title set n + k (k ≥ 1), it is not possible.
Principle 2: Put more than mn (m times n) of n objects into a drawer, then at least one drawer of not less than m +1 objects.
Proof (reductio ad absurdum): If each of m objects into the drawer up, then up into the Magnetic Grate n mn of objects, with the title set does not match, it is impossible.
Principle 3: infinitely many pieces of objects into n drawers, at least one drawer with an infinite number of objects.
Principle 1, 2, 3 are schematic representation of the first drawer.
2013年9月18日星期三
Teaching Teaching magnetic plate while driving training applications
Teaching magnetic board act as a "learning platform" role, you can easily reproduce the trainee coaches training scene, commenting and students to facilitate the understanding of traffic scene is mainly used to explain the teaching programs.
In the teaching process, coaches need to pay attention to the following aspects:
1, well-prepared teaching scenarios. Teaching scenarios should be established teaching content and teaching goals, appropriate teaching scenarios can promote coaches made a very good teaching effect, therefore, before class, coaches should focus on teaching theme designed scenes, to a shorter period of time complete the task of teaching, to achieve the purpose of teaching.
2, advance design education scene transformation process. For detailed description of a problem, coaches need to focus on teaching theme design variety of issues, which involves teaching the scene to change. Drawer magnets Coaches need to be a variety of issues, reasonable arrangements for teaching the elements of the scene to transform and transform sequentially, which can be a good way to control the process of teaching.
3, where students actively participate in enhancing teaching to interact. So that students actively involved in teaching, rather than passive acceptance, can produce well teaching.
In the teaching process, coaches need to pay attention to the following aspects:
1, well-prepared teaching scenarios. Teaching scenarios should be established teaching content and teaching goals, appropriate teaching scenarios can promote coaches made a very good teaching effect, therefore, before class, coaches should focus on teaching theme designed scenes, to a shorter period of time complete the task of teaching, to achieve the purpose of teaching.
2, advance design education scene transformation process. For detailed description of a problem, coaches need to focus on teaching theme design variety of issues, which involves teaching the scene to change. Drawer magnets Coaches need to be a variety of issues, reasonable arrangements for teaching the elements of the scene to transform and transform sequentially, which can be a good way to control the process of teaching.
3, where students actively participate in enhancing teaching to interact. So that students actively involved in teaching, rather than passive acceptance, can produce well teaching.
Period of use magnet
Magnet in contact with the process of the fluid, the interior of the magnetic energy will produce some irreversible loss, when the loss exceeds 30% of the original strength, or the surface of the bag off of the metal, stainless steel tube rupture when worn. When faced with these situations should be timely replacement bar magnet, the Drawer magnets must not allow the magnet has been leaked to continue working. Magnets are relatively brittle, oil coated on the surface, this will impact on the environment. In China, the production of magnets can work under heavy 1-2 years, if it is to work under light load 7-8 years.
2013年9月16日星期一
drum magnetic separator
Drum magnetic separator, grinder with magnetic separator, magnetic separator tank
Can effectively remove iron in the coolant, no filter consumption. Easy to install, can be used with other forms such as the filter drum (drum) paper filter, flat comb tape over
Filter machine, vacuum-type paper filter used in combination. Magnetic separator can be used according to customer requirements ferrite magnets, NdFeB or Alnico. Magnetic separator shell
Material depending on the cube magnets of high quality carbon steel or stainless steel.
Magnetic Separator Application: grinding coolant is widely used in adsorption separation of impurities. In the painting, phosphating, cold and other industries have also been applied. Particularly suitable for
CNC machine, EDM machine, polishing machine, gear cutting machines, grinders and other produce in the process of cooling liquid iron particles using the occasion.
Can effectively remove iron in the coolant, no filter consumption. Easy to install, can be used with other forms such as the filter drum (drum) paper filter, flat comb tape over
Filter machine, vacuum-type paper filter used in combination. Magnetic separator can be used according to customer requirements ferrite magnets, NdFeB or Alnico. Magnetic separator shell
Material depending on the cube magnets of high quality carbon steel or stainless steel.
Magnetic Separator Application: grinding coolant is widely used in adsorption separation of impurities. In the painting, phosphating, cold and other industries have also been applied. Particularly suitable for
CNC machine, EDM machine, polishing machine, gear cutting machines, grinders and other produce in the process of cooling liquid iron particles using the occasion.
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