Frequently Asked Questions
Q: What are neodymium magnets? Are they the same as "rare earth"?
A: Neodymium magnets are a member of the rare earth magnet family. They are called "rare earth" because neodymium is a member of the "rare earth" elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world.
Q: What does the "N rating", or grade, of the neodymium magnets mean?
A: The grade, or "N rating" of the magnet refers to the Maximum Energy Product of the material that the magnet is made from. It refers to the maximum strength that the material can be magnetized to. The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe). A magnet of grade N42 has a Maximum Energy Product of 42 MGOe. Generally speaking, the higher the grade, the stronger the magnet.
Q: What is the difference between the different platings and coatings?
A: Choosing different coatings does not affect the magnetic strength or performance of the magnet, except for our Plastic and Rubber Coated Magnets. The preferred coating is dictated by preference or intended application. More detailed specifications can be found on our Specs page.
&#; Nickel is the most common choice for plating neodymium magnets. It is actually a triple plating of nickel-coppernickel. It has a shiny silver finish and has good resistance to corrosion in many applications. It is not waterproof.
&#; Black nickel has a shiny appearance in a charcoal or gunmetal color. A black dye is added to the final nickel plating process of the triple plating of nickel-copperblack nickel.
NOTE: It does not appear completely black like epoxy coatings. It is also still shiny, much like plain nickel plated magnets.
&#; Zinc has a dull gray/bluish finish, that is more susceptible to corrosion than nickel. Zinc can leave a black residue on hands and other items.
&#; Epoxy is basically a plastic coating that is more corrosion resistant as long as the coating is intact. It is easily scratched. From our experience, it is the least durable of the available coatings.
&#; Gold plating is applied over the top of standard nickel plating. Gold plated magnets have the same characteristics as nickel plated ones, but with a gold finish.
For more information, please visit Horizon.
Among those famous precast concrete magnet shuttering magnet shutter magnets manufacturers, is a professional supplier in China, welcome to wholesale precast concrete magnet shuttering magnet shutter magnets from our factory.
Precast concrete magnet shuttering magnets shutter magnets
Precast concrete magnets are a useful and high-tech method of fixing formwork to the casting bed. They are made from rare earth neodymium magnets, which give higher pulling-off force than other magnetic materials. The shutter magnets are designed so that the magnetic portion is layered with steel to spread the magnetic flux to increase the contact area.
Housings surrounded by a magnet can protect against damage, and the steel may be used to bolt a housing to the neodymium magnet.
The precast concrete magnets have been searching for a more economical and efficient formwork method. In the past, some conventional magnets were used to position and fasten the formwork, but considerable mechanical loads with a hammer were required, which made it easy to damage the magnets and the surface of the expensive formwork tables as well. To facilitate the formwork activities, GME is developing and manufacturing our shuttering magnet to solve this problem successfully.
Our shuttering magnet provides quick operation leading to improved efficiency when setting out and breaking down the formwork. It consists of a switchable neodymium 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 shuttering magnet can fasten the formwork to the steel table tightly. In a deactivated mode, using two threaded holes integrated on the top, the neodymium magnet inside is easy to position and can be equipped with various adapters, which provide unlimited options for use.
Magnetic shuttering solutions for precast concrete formworks!
(adhesive force from 450 to kg) for your rationalization ideas for shuttering construction, both for wood as well as steel shuttering elements. The adaptor technology presents you with unlimited options for use, which meet your requirements at all times. The SPB platform guarantees you the greatest possible flexibility for the future as well.
Characteristics
&#; Use with wood or steel formworks
&#; Easy to operate
&#; Simple and exact positioning
&#; Adhesive force ranging from 450 Kg to Kg
&#; Avoid welding or bolting to the formwork table therefore preserving the surface finish
&#; The same magnet can be used for different purposes
&#; Integrated threaded holes to adapt formwork
&#; Adapters to be custom-made
There are many shutter magnet types available.
Structure and Elements of Shuttering Magnets:
The Shuttering magnet assembly consists of a steel Casing and fixing screws and a switchable magnetic block or magnetic core (certain designed magnetic circuit) which is made of some strong neodymium magnets and steel plates.
This magnetic core provides a very strong adhesive force to the precast concrete tables. There is a control ON/OFF button on the top of the magnet, to open or close the magnetic power.
&#;Magnet on/off Switch:
1. Stainless steel, Lathe fine grinding,
2. Over 100,000 fatigue simulation experiments, avoid any deformation and malfunction.
3. Humanization design, quick switch (on/off) the magnetic field.
&#;Fixing Screws: (Applicable national standard)
Fixing screws can be utilized to secure different kinds of side rails and blackouts
1. Production according to the standard of GB /T -94-GB.
2. Strength &#; Kg: M12
3.Strength> Kg: M16
&#;Strong Neodymium Magnet
Many competitors add more than 12% Lanthanum Cerium ingredient in the neodymium magnet when production. 6-8% costs can be saved; by this formula, the same Remanence (Br) is the same as the Chinese standard, but its Coercive Force (Hcb) and Intrinsic Coercive (Hjc) are much less and its magnetic field will decrease about 10-15% after 6-10 months.
Neodymium Magnet occupied more than 50% cost of shuttering magnets. It is the most important element of this product. The biggest advantage is that Neodymium Magnet is produced and quality controlled by our own since 9 years ago, certificated by GB/T- IDT IS: and TS. Our material is from Shanxi Province, its performance is higher about 1 grade, but expensive a little. Our warranty is 3 years if proper use.
1. Relatively lower price on neodymium magnets.
2. High Grade, N & M Grade.
2. Max Operating Temp. &#; 80&#;
3. Anti-corrosion, high-quality zinc plating.
5. Strong Strength: 450Kg-Kg
&#;Iron casing protection around neodymium magnet:
1. High-quality iron casing.
2. Protection of neodymium magnet from damage when changing the switch.
3. Partly protects neodymium magnet from corrosion and oxygen.
4. Available for easy cleaning of the pneumatic air gun and electric brush.
&#;Plastic Casing:
1. High-Quality ABSF
2. Thermal Stability
3. Wear Resistant
&#;High Quality Spring:
1. Protect Switch
If you want to learn more, please visit our website Shuttering Magnet Factory.
2. Protect the magnet from dropping
3. Japanese alloy steel SWOSC-V, by oil quenching; Fatigue resistance, Excellent toughness. Three times strong pressure treatment eliminates internal stress. Surface shot blasting to improve stress concentration strength.
4. The service life of more than one million times.
&#;Box Casing: Laser cutting process
1. Stainless steel.
2. Q235: surface blackening treatment
3. Painting, use environmental protection paint, color can be customized.
4. baking varnish, use environmental protection paint, color can be customized.
&#;Stainless steel stud:
1. Strong Fastening
2. Anti-rust for more than 3 years.
How Does the Shuttering Connect and Fix to the Side-Formwork?
How to Assure the Quality for You?
1. Material
1.1 Material Purchasing
5R Management Material Procurement System. Our purchasing manager has more than 8 years of purchasing experience and rich experience in quality control and the advantages of different factories different products, and different quality levels. We control every material to have stable 2-3 suppliers, who can get much of our orders and offer stable quality and excellent service. And in our system, we have more than backup suppliers there, to meet any special and urgent requirement from clients.
Besides the neodymium magnets, we also have strict inspections of every incoming material (Dimensions, weight, material level, ductility, permeability, metallographic structure, fatigue test) such as the steel casing, button steel, and plastic, the spring, fixing screws, and so on.
To improve our inspection strength and ability, we also have a great partnership with 5 3rd party inspection organizations, to do regular and irregular material analysis and inspection.
2. Excellent production equipment for the quality internal control of quality and lead time
Most competitors outsource the post-production processing to a small workshop, but the quality and process control are lacking an internal inspection. Even if they find the problem, it is difficult to improve and solve, and finally, clients are burdened with the loss. This is a serious current situation and problem for Made-in-China production.
Compared with other competitors, we have spared no effort to improve our self-production ratio and equipment-owned ratio since 3 years ago. We imported the automatic laser cutting bed from Europe, to improve precision-oriented and bending machines and so on. It can be said that apart from painting and baking, we have almost mastered all the processes and equipment for the production of shuttering magnets, which leads to better, stricter internal control than our competitors.
3. Pull Strength Testing:
Regarding the detection of suction, we will inspect all orders with less than 10 pcs; if the orders are higher than 10 pcs, our inspection ratio is 10%.
4. QM& QC System
We also use the Advantaged Product Quality Planning (APQP), Potential Failure Mode and Effects Analysis (FMEA), Statistical Process Control (SPC) Production Part Approval Process (PPAP), and Measurement System Analysis (MSA) Error-proofing method to prevent the defects from occurring.
&#; As mentioned above, the safety stock of our regular products is 2 months. In addition, our safety stock of raw materials and accessories exceeds 3 months. So our magnetic box delivery delay rate in is 0%.
How to Pack a Shuttering Magnet, to Meet Your Requirements Shipping by Sea, by Air/Express, and by Railway?
Your shuttering magnet will be packed with a double-wall corrugated carton first and tight with a strong packing belt. Between cartons and shuttering magnet, between magnets, there is a high-quality foam plate to separate and protect products from scratch and damage.
1. By Sea, you have 2 packing options.
1.1 Packing by Pallet
1.2 Packing by Strong Wooden Case.
This option looks more formal and beautiful. But it is more expensive 35USD per Case than option 1.
2. What Should You Pay Attention to When Shipping Shuttering, Agents by Air?
By Air and Express such as FedEx, DHL, UPS, and TNT:
In international air/Express transportation, magnetic items are sensitive, and their magnetism will interfere with the safety of aircraft transportation. Therefore, the airline decided that all items containing magnetism need to be magnetically inspected.
So we need to magnetically shield the items so that the magnetism of the items meets airline standards. So packing needs to insert thick iron sheets or iron boxes between the foam and carton wall.
How Clients Use Our Shuttering Magnets:
USA Client:
Thailand Client:
How Many Pieces Shuttering for 3 Meters and 5 Meters Side Formwork?
1. At the corner, the shuttering magnet distance from the corner is about 200-500mm.
2. The distance between shuttering magnets is about -mm.
Are you interested in learning more about Precast Concrete Magnet Box? Contact us today to secure an expert consultation!