The main advantage of NdFeB permanent magnets is that they are quite expensive and have good characteristics in the mechanical direction. The disadvantage is that the Curie temperature is low, and the temperature characteristics are poor, and the powder is prone to occur. Corrosion, chemical properties must be improved by adjusting its chemical composition and surface treatment methods (such as galvanizing) to meet the practical application requirements we need.
Ferrite permanent magnets are a class of metal oxides with ferromagnetism. In terms of electrical properties alone, the resistivity of ferrite permanent magnets is much larger than that of metal and alloy magnetic materials, and has slightly higher dielectric properties. The magnetic properties of ferrite permanent magnets also exhibit high magnetic permeability at high frequencies. Therefore, the ferrite permanent magnet has become a non-metallic magnetic material which is widely used in the field of high frequency and low voltage.
NdFeB permanent magnet is a third-generation rare earth permanent magnet material. It has the characteristics of small size, light weight and strong magnetic properties. It is the best magnet with the best performance-price ratio. It is known as the magnetic king-powerful magnet in the magnetic field. The advantages of high energy density make NdFeB permanent magnet permanent magnet materials widely used in modern industrial and electronic technology. In the bare magnetic state, the magnetic force can reach about 3500 Gauss.
Ferrite permanent magnets, also known as ferrite or magnetic porcelain, are non-metallic magnetic materials and are composite oxides (or orthoferrates) of magnetic ferric oxide with one or more other metal oxides. The magnetic force is usually 800-1000 Gauss, which is often used in speakers, speakers and other instruments.
Open Baidu App to see more pictures
Everbbeen magnet manufacturer
Everbbeen magnet manufacturer tips: magnet toys can cause permanent damage after swallowing
The AQSIQ Defective Product Management Center recently issued a warning on the consumption of magnet toys. Some magnet toys contain small magnetic parts or small balls. If children accidentally swallow or inhale, they may cause suffocation; if children swallow two or more powerful magnets, or swallow powerful magnets and other ferromagnetic objects (iron, cobalt) , nickel), permanent magnets will be adsorbed in the digestive system with another magnet (or ferromagnetic objects), and pressure on the intestinal wall, may cause gastrointestinal perforation or intestinal obstruction, may be life-threatening in severe cases. In many cases, these magnetic components need to be surgically removed, causing permanent damage to the child's digestive tract. Many similar injuries have occurred at home and abroad.
Everbbeen magnet manufacturer
The precautions consumers can take are:
■ When purchasing an Everbbeen magnet toy, be aware of the presence of small magnetic parts, especially strong magnetic parts. Don't let children under 8 years old play toys with strong magnetic parts to prevent children from accidentally swallowing or inhaling strong magnetic parts, causing suffocation, perforation of the intestines, etc. Children aged 8 and over are playing with such toys. Parents should carefully read the relevant warning instructions, and do a good job of monitoring and necessary reminders to prevent accidents.
■ If the guardian finds that the child has swallowed or inhaled small magnetic parts, or if the child has sudden abdominal pain, nausea, vomiting, or diarrhea and other clinical symptoms suspected of swallowing small magnetic parts, he should be immediately taken to the hospital for treatment. In the accidents that have occurred, some children only show suspected flu symptoms at the beginning of the ingestion of small magnetic parts, which may cause misdiagnosis, delay treatment, and cause serious harm to children.
