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In the production of various structural materials, standards are used that specify permissible deviations from the ideal dimensions and geometric shapes. The higher the precision of a product, the more complex and expensive the manufacturing methods used to produce it. However, they allow for greater efficiency in solving complex practical problems...

Threaded connections are now widely used in the assembly of various machines and mechanisms, as they allow for the secure fixation of individual parts within a complex structure. Another factor in favor of this approach is the relative ease of assembly operations during construction and disassembly during scheduled maintenance or repairs following the failure of individual components...

In the national economy, there are many tasks associated with the need to divide a solid object into a specific number of pieces. For example, consider the crushing of reinforced concrete structures or brick walls during the complete or partial dismantling of buildings for demolition or reconstruction, the removal of a section of asphalt road for repairing underground utility lines laid across it,..

Modern machinery and mechanisms contain numerous rotating parts, resulting in a strong market demand for their manufacturing materials. When selecting materials from those provided by metallurgical plants, it is necessary to consider numerous factors affecting the overall operation of the system. Therefore, selection is one of the most important engineering tasks and often determines both the reli..

Chromium and nickel, alloying elements introduced into stainless steel during the smelting process, were discovered and studied by chemists along with other elements of the periodic table over the past two or three centuries, but they had never previously been used by humanity for practical purposes. For this reason, archaeological excavations have failed to find traces of ancient civilizations, b..

When creating various equipment and piping systems, it's important to consider ways to seal the internal space to prevent the release of circulating liquids and gases into the environment. Failure to do so will result in the working fluid escaping as pressure increases, leading to unnecessary economic losses due to both the excess consumption of the product itself and the energy expended in pumpin..

Many types of shut-off and control valves feature a reciprocating element whose axial movement in either direction is achieved by shifting along the threads of the supporting element during clockwise or counterclockwise rotation. In gate valves and globe valves, the stem rotates within a threaded hole in the body, moving like a bolt relative to a nut that remains within its own plane. This allows ..

In the electrical industry, the most important characteristic for assessing the suitability of a material for a given purpose is its resistivity, which reflects its ability to conduct electric current. Where current must be minimized, dielectrics with high insulating properties are used, and when obstacles to current flow must be eliminated, silver, copper, and aluminum, which have the highest ele..

Every year, industries across various sectors of the national economy produce a vast array of goods that require transportation from the manufacturer to retail outlets serving end consumers. Most of these goods also require temporary storage in specially equipped hangars and other types of buildings. Loading, unloading, and transporting are labor-intensive, requiring manual labor and considerable ..

In the mechanical engineering industry, the manufacturing process for many vehicle parts and various equipment includes turning to produce rotating bodies of various geometric shapes and sizes. Before subsequent milling, grooving, threading, and drilling operations, all of these bodies share a common characteristic: symmetry around the central axis. This ensures uniform mass distribution and smoot..

Medical research conducted over the past decades has revealed the mechanisms underlying the onset and development of many acute and chronic diseases. Many of these diseases were found to be caused not by biological factors related to heredity or environmental conditions, but by the effects of substances and microorganisms on the tissues of individual organs and the regulatory systems of ongoing bi..

Medical research conducted over the past decades has revealed numerous connections between substances of varying composition and biochemical processes occurring in the human body. It has been discovered that many acute and chronic diseases are caused by certain chemical compounds capable of triggering mechanisms that disrupt the normal energy balance in living cells, as well as influencing the inf..

Currently, the vast majority of food products come to store shelves in packaged form, and containers with lids of various volumes often serve as packaging. They can be made of glass, tin, high- and low-density polyethylene, have a variety of geometric shapes and colors, but in all this diversity, one common feature can be identified for all, namely, that a ring-shaped sealing gasket is always used..

In modern technology, there are practically no simple mechanisms left; each unit consists of dozens or even hundreds, and sometimes thousands of parts that differ in geometric shape, size and functional purpose. To assemble them into a single, well-coordinated system, fasteners are needed to fix their spatial position, as well as, if necessary, to ensure a hermetic division of space into several i..

Turning on lathes is one of the most popular technological methods for producing various parts for complex, multi-part mechanisms in mechanical engineering. To improve the quality characteristics and increase the production rate of all kinds of elements, it is necessary not only to optimize all the operations performed, including the selection of optimal rotation and feed modes, but also a reasona..

Pipeline transport currently covers more than half of the annual freight turnover in the economic activity of all countries on planet Earth. The total length of all sections of branched tree-like structures of pipelines of various diameters is enormous, so there is a steady demand for materials suitable for their construction and repair. Ukrainian metallurgical plants produce large tonnages for th..

Made of high-alloy steel 08X18N10 seamless stainless steel pipe is one of the standard representatives of the group of varieties of special-purpose ferrous rolled metal products. To obtain the raw material for the production of these products, a number of operations are carried out in several stages during the smelting process in order to improve any technical characteristics of the fina..

The walls of pipes made of ordinary structural steel are easily subject to corrosion when in contact with water or humid air, not only contaminating the inner and outer surfaces with a layer of unpleasant-looking loose rust, but also slowly but surely destroying the metal to the point of making the product unsuitable for further use. If it is necessary to ensure the aesthetics of utility lines or ..

As many people know, pipeline transport surpasses all other transport systems combined in terms of total cargo turnover. Millions of tons of water, oil and natural gas are pumped annually from their intake points to end consumers, thereby ensuring a continuous flow of the most popular natural products in industry and everyday life. For the efficient and uninterrupted operation of all transport sys..

Inside buildings, the piping layout has a branched structure into many sections, and on each of them there are numerous turns in the direction of movement. The scheme of the heating or water supply system of an apartment building turns out to be quite complex and its installation requires the use of special connecting parts. In order to make a ninety-degree turn in the corner of the room, so-calle..

In electrical engineering, along with electric current conductors, dielectrics are widely used to insulate them from each other and the body of the electrical appliance. The more reliable it is, the more stable the operation will be, the longer the service life and the less danger for the user to be exposed to the damaging effects of direct or alternating current. In nature, there were too few mat..

Under the general name silicone rubber A wide group of materials with different shapes, sizes and purposes is collected. All of them are produced from a basic organosilicon substance with the introduction of additives to improve individual technical characteristics and obtain various properties useful for practical application...

Sold in coiled cords silicone sealant It is widely used for sealing various joints of moving and stationary parts. The cross-sectional shape can be of three types:round;square;rectangular...

Produced in sheets porous sponge rubber has high elasticity and does not break down under multiple deforming forces not exceeding the rupture threshold values in any direction, and after their removal instantly returns the original geometric shape and dimensions. This property allows it to be used to absorb impacts of any amplitude, thereby preventing unwanted shifts of parts and the app..