What is a search magnet? Materials of construction and construction

Properties of magnets were known to mankind for a long time, but thanks to the development of industry they were widely used only in the late 19th century. Along with production tasks, ferrimagnetic materials are used in everyday life. One of the interesting and, most importantly, profitable methods is the search for metal objects. Before you find out what a search magnet is, you need to know its main characteristics and properties.

Materials of manufacture

Most of the magnets of practical use are artificial alloys. Natural materials, in particular magnetic iron ore, do not possess the required properties. They have small indicators of tear force, susceptibility to rapid destruction as a result of mechanical stress. Therefore, for industrial purposes, often used ferrites placed in the manufacturing process in a magnetic field. Their service life can be estimated in decades, without loss of operational properties.

Unlike industrial designs, household designs of magnets are simple. Because of their small size, a neodymium alloy, N-Fe-B, is often used for their manufacture. To improve the mechanical strength and reduce the cost in the composition of the material add iron and boron. As a result, a neodymium magnet is obtained, the search potential of which has been disclosed so far.

Their scope is wide:

• Furniture industry - locks for doors.
• Security systems - in conjunction with sensors.
• Calculation of the angular velocity or angular position - is used together with the Hall sensor.
• In search and archaeological expeditions.

For private use, too, there was quite an interesting niche. In regions with a rich historical past, you can make a search magnet yourself and engage in practical archeology.

Security measures

Not many people know that to work with magnets, you must follow certain rules. In most cases, large models have qualities that can harm both human and technology.

Therefore, the following safety measures should be adhered to:

1. Prepare a special container, the material of which does not have magnetic properties. It can be a wood or a thick-walled polymer. Install a warning sign on the surface.
2. For normal operation of electronic devices, the minimum distance from the magnet should be 10-20 cm.
3. Force fields negatively affect the pacemaker.
4. The space between the magnet and the metal must be free. Otherwise, injuries can occur as a result of pinching of limbs.

Design

For carrying out of prospecting works it is necessary to think over carefully a design and to consider specificity of operation. It is not enough to take the finished product, fix it on a strong rope and go to the fields in search of treasure.

If you need to make a search magnet yourself, then a drawing is pre-compiled. It indicates the overall dimensions of all elements, the material and the methodology for their assembly. When running this simple paragraph, you can avoid many errors. For example - if one part of the magnet should be open, then do not take into account the way it is attached to the protective casing.

Optimal option - the protective shell completely repeats the shape of the product. In this case, the probability of its damage during transportation or during the search process decreases.

Before manufacturing it is necessary to determine the technical characteristics, which directly depend on the overall dimensions.

Options

With an increase in the linear dimensions of the magnet, its performance is increasing. Depending on the task, you should carefully choose the option, as the cost of various models can range from $ 30 to $ 300.

But what is a search magnet without proper equipment?

Housing and lifting elements

The protective shell is made of a durable material. Optimal option - turning the steel billet with subsequent zinc coating. Such a product will become a reliable protection against mechanical damage, and due to the surface layer for a long time will not be corroded.

The methods of fixing the magnet in the housing can be varied. But the most popular and practical are:

1. Manufacture of a closed structure with a screw cap. Its tightness makes it possible not to be afraid of the harmful effects of water, even marine.
2. Fixation with epoxy adhesive.

Make a search magnet yourself, you can and in other ways. The main thing is to observe safety techniques and take care of the reliability of the entire structure.

For lifting, a strong cord is usually used, the breaking force of which should be at least three times the weight of the retention.

Practical use

But what is a search magnet without interesting finds? Due to its specific properties, it can be used where conventional metal detectors graze - in an aquatic environment. With due skill for the day, you can thoroughly explore the large area of the river bottom. Considering the huge historical past of almost every region of the country, there must be a unique copy from the past centuries.

But do not entertain yourself with the idea of fast enrichment - the finds are a variety of search magnets and are not always of value. It is required to literally shovel the mouth of the river to find something worthy of attention. Therefore, before the start of the mini-expedition, it is recommended to familiarize with the history of the region in order to increase the probability of successful "catch".