Why Choose Us
Technology Innovation
Ltd. has strong technical research and development capabilities and a professional technical team, which can provide customers with cutting-edge magnetic materials and technical solutions. The company has deep technical accumulation and innovation advantages in the field of magnetic materials, which can meet the changing needs of customers.
Customer Service
The company focuses on customer service and support, providing comprehensive pre-sales, sales and after-sales services to ensure that customers receive timely and effective support in the process of use. The company's sales team and technical team have professional knowledge and skills and are able to provide customers with professional advice and solutions.
Customised Service
The company provides customised magnetic material solutions, offering targeted products and services according to customers' specific needs and application scenarios. The company's technical team has a wealth of experience and expertise, and is able to work closely with customers to develop products that meet their specific needs.
Quality and Reliability
The company focuses on product quality and reliability, with a perfect quality management system and advanced production equipment to ensure stable performance and reliable quality. Our products undergo strict testing and screening to ensure compliance with international standards and customer requirements.
What is Magnetic Bar
A magnet bar is a rectangular piece of an object, made up of iron, steel or any other ferromagnetic substance or ferromagnetic composite, that shows permanent magnetic properties. It has two poles, a north and a south pole such that when suspended freely, the magnet aligns itself so that the northern pole points towards the magnetic north pole of the earth.
Advantages of Magnetic Bar
Simplicity
Magnetic bar have a straightforward design, making them easy to understand and use. They typically have a north and south pole, which is intuitive for educational purposes.
Strong magnetic field
They can produce a strong and stable magnetic field, which is beneficial for applications like magnetic compasses, magnetic locks, and various scientific experiments.
Versatility
Magnetic bar can be used in a wide range of applications, including motors, generators, magnetic separators, and in devices like refrigerator magnets.
Durability
Many magnetic bar are made from materials like neodymium or ferrite, which can be highly durable and resistant to demagnetization over time, especially if properly cared for.
Cost-effective
Magnetic bar are generally inexpensive to produce and purchase, making them accessible for both industrial and educational purposes.
Ease of handling
Their shape and size make them easy to handle and manipulate, which is particularly beneficial in classroom settings for demonstrations and experiments.
Alignment
Magnetic bar can be easily aligned in specific orientations, allowing for precise applications in magnetic fields.
Non-electric
They do not require electricity to function, making them useful in situations where power sources are unavailable or impractical.
A magnetic bar possesses certain properties which are listed below:
• Like other magnets, a magnetic bar also has two poles, I. e. the north pole and the south pole. No matter how many times a magnetic bar is broken, or how small or large the magnet is, it will always have two poles.
• The magnetic force of a magnetic bar gets stronger as we move towards the poles, and gets weaker in the middle of the magnet.
• When kept together, the opposite pole of the two magnetic bars will experience attractive force while if the like poles come in contact they will repel each other.
• They remain and act such for their lifetime so as not lose their magnetism over time.
• Magnetic bars are strongest at both the poles and get weak in the centre part of it.
• When suspended freely in the environment, the north pole of the magnetic bar points toward the south pole of the earth, and the south pole of the magnetic bar faces toward the north pole, and as a result, aligns itself with earth's magnetic field.
• The magnetic bar attracts iron, steel, and other ferro magnetic substances which come in contact with its magnetic field.
How Are Electromagnets Different from Magnetic Bars?
Though electromagnets and magnetic bars show similar magnetic fields but the following are the differences between them:
• Most magnetic bars are blocks of ferromagnetic materials while electromagnets are coils of wire which sometimes are surrounded by a ferromagnetic core. Electromagnets behave like magnetic bars when an electric current is passed through them.
• Magnetic bars generate their own magnetic field while electromagnets depend on the external sources of electric current for the generation of the magnetic field.
• Magnetic bars have a constant magnetic pull as they are permanent magnets while electromagnets do not have a constant magnetic pull as they are controlled by external sources of electric current.
• The magnetic force of the magnetic bar is constant and is dependent on the material it is made from while the magnetic force of an electromagnet can be varied by varying the amount of electricity flowing through the coil.
Types of Magnetic Bar
Alnico Magnetic Bar
Alnico magnetic bars offer excellent temperature stability, high residual induction, and relatively high energies. They have better corrosion resistance and usually do not require surface treatment. It has temperature stability, with a working temperature of 300-500°C, and they demagnetize at temperatures exceeding 600°C. Due to their strategic resources of cobalt and nickel, alnico magnets are relatively expensive and find applications in aerospace, military, automotive industry, and security systems.
Neodymium Magnetic Bar
Neodymium magnetic bars are widely used in electronics, electrical machinery, medical equipment, toys, packaging, hardware machinery, aerospace, and other fields. They are known for their exceptional magnetic strength and versatility, making them popular in various industries and scientific applications. Neodymium magnetic bars come in a range of grades, offering exceptional magnetic strength and adaptability. However, they are sensitive to temperature and can be significantly affected by exposure to elevated temperatures.
Cylindrical Magnetic Bar
A magnetic bar of the shape of a cylinder is called a cylindrical magnetic bar. It is also called Rod Magnet.
Rectangular Magnetic Bar
Normal magnetic bar that is in shape of a cuboid is called a Rectangular magnetic bar. It has various applications and in general is called Bar mangnets.
Applications of Magnetic Bars
Motors
Magnetic bars are used in motors to generate rotational motion. In an electric motor, a coil of wire is placed in the magnetic field of a magnetic bar, and the resulting force causes the coil to rotate. This motion is then used to power mechanical devices such as fans, pumps, and other equipment.
Generators
Magnetic bars are also used in generators to generate electricity. In a generator, a coil of wire is rotated in the magnetic field of a magnetic bar, and the resulting movement of the wire generates an electric current.
Scientific experiments
Magnetic bars are often used in scientific experiments and demonstrations to illustrate the properties of magnetism. For example, they can be used to demonstrate how magnets attract and repel each other or how they can be used to create a magnetic field.
Magnetic therapy
Magnetic bars are sometimes used in alternative medicine to help relieve pain and promote healing. They are believed to work by increasing blood flow to the area of the body where they are applied.
How to Produce Magnetic Bar
There are several ways to produce magnetic bars, depending on the type of magnet material being used. Here are some common methods for producing magnetic bars:
Permanent magnets
Permanent magnets are magnets that retain their magnetism indefinitely. They can be made by magnetizing naturally magnetic materials such as iron, cobalt, or nickel, or by creating an alloy that is magnetized by heating it to a high temperature and then cooling it in the presence of a strong magnetic field. Permanent magnets can be formed into a bar shape by casting or pressing the magnet material into a bar mold.
Electromagnets
Electromagnets are magnets that are created by running an electric current through a coil of wire. They are not permanently magnetized and only produce a magnetic field when an electric current is flowing through the wire. Electromagnets can be formed into a bar shape by winding a coil of wire around a bar-shaped core made of iron or another magnetic material.
Rare earth magnets
Rare earth magnets are magnets that are made from rare earth elements such as neodymium, samarium, or dysprosium. They are extremely strong and have a high magnetic field, making them suitable for use in a wide range of applications. Rare earth magnets can be formed into a bar shape by pressing or sintering the magnet material into a bar-shaped mold.
The Magnetic field can be defined as the vector value that affects the magnetic substances, electric charges, and currents that come in its contact. A magnetic field line moves from the north pole of the bar magnet to the south pole. The arrows show the direction of the magnetic lines of force.
The lines are dense around the poles, symbolising the strength of the magnetic field which is greatest at the poles.
The lines are far apart in the middle of the magnet symbolising the weak magnetic field around the centre of the Magnet as compared to the poles.
The attraction between the two opposite poles of two different magnets is observed as it allows the flow of magnetic fields from the north pole to the south Pole.
While the two magnets experience an attractive force when the opposite poles are made to enter the other one's Magnetic field, the same cannot be said when the like poles are made to cross the other one's magnetic field.
Since the two same poles of different magnets are unable to create the flow of magnetic lines as needed for the magnetic field to be formed, repulsive force is experienced by both the magnets.
Key Factors That Influence the Price of Magnetic Bars
Tube magnet size
The primary material in magnetic bars is rare-earth permanent magnets, specifically neodymium (NdFeB) magnets. As the size of the magnetic bar increases, more neodymium magnets are required to fill the bar, which directly increases the cost. Larger bars demand a greater quantity of these high-performance magnets, and this is the key factor driving up the price.
Bar magnet magnetic strength (gauss rating)
Magnetic bars are typically rated by their Gauss level, which measures the strength of the magnetic field. Higher Gauss levels, such as 9,000, 12,000, or 16,000 Gauss, indicate stronger magnets. The stronger the magnet, the more expensive it is. This is especially true for neodymium magnets, which come in different grades like N35 to N54. As the grade increases, so does the magnet’s strength and its price.
Temperature resistance
Temperature has a significant impact on a magnet’s performance. If a magnet is exposed to temperatures higher than its rated maximum operating temperature, it will experience demagnetization, meaning a loss of magnetic strength. This can greatly reduce the effectiveness of the magnetic bar in removing impurities.
How to Store Magnetic Bar
To keep magnets working at their best, care should be taken to ensure they’re properly stored.
• Be careful not to let magnets become attached to each other; also be careful not to allow magnets to collide with each other when placing them in storage. Collisions can cause damage to the magnet and can also cause injury to fingers that come between two very strong attracting magnets
• Choose a closed container for your magnets to prevent metallic debris from becoming attracted to the magnets.
• Store magnets in attracting positions; over time, some magnets that are stored in repelling positions can lose their strength.
• Store alnico magnets with “keepers,” plates used to connect the poles of multiple magnets; keepers help prevent the magnets from becoming demagnetized over time.
• Keep storage containers away from computers, VCRs, credit cards and any devices or media containing magnetic strips or microchips.
• Also keep strong magnets in an area located away from any place that may be visited by individuals with pacemakers since the magnetic fields may be powerful enough to cause the pacemaker to malfunction.
Our Factory
Shanghai Young Magnet Co., Ltd. is a premier magnet manufacturer in China, boasting over 10 years of expertise in the magnetic material industry and an annual production capacity of 800 tons.
We specialize in Permanent Sintered Neodymium-Ferrum-Boron (NdFeB) magnets, Samarium-Cobalt (SmCo) magnets, Aluminum-Nickel-Cobalt (AlNiCo) magnets, and related assemblies, all ISO9001 and SGS certified.
Our primary markets include the Americas, Europe, the Middle East, Korea, Japan, Hong Kong, Taiwan, and China.
Based in Shanghai, we integrate research, development, production, and sales of new materials. Our annual output includes 800 tons of NdFeB magnets and 6000 tons of ferrite magnets, along with Alnico, SmCo, and plastic rubber magnets.
Committed to high reliability and quality, innovation, and customer satisfaction, our products are globally used in automotive, home appliances, audio equipment, communication equipment, and new energy fields like wind power.
With rich experience and expertise, we offer comprehensive technical support and personalized service. We transitioned from producing ferrite powder to finished Ferrite and NdFeB magnets, establishing an overseas sales division in 2013 and Young Magnet (HK) Co., Ltd. in 2015.
FAQ
As one of the most professional magnetic bar manufacturers and suppliers in China, we're featured by quality products and good service. Please feel free to buy magnetic bar for sale here from our factory.
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