promyshlennoct and equipment – Artieda 2011

Metal Benches

Margie — Sun, 13 Jun 2021 04:18:11 +0000

Each artist is, of course, dreams of his workshop, where you can work quietly, and no one will disturb him. In addition, the workshop will be established exclusively for the furniture and work tools. There are many versatile furniture that is used for decorating the studio, and one such type of furniture – bench bench odnotumbovy. Bench – a table for manual processing of products from different materials, so it is – a workplace wizard. There are two types of benches – carpentry and plumbing, so buying a workbench, you need to consider articles of any material to be processed for them. Joiner's benches are needed for working with wood products, and vices for the treatment of metal products. In addition to carpentry and plumbing, is also a carpenter's bench – a long table of about 6 meters and a width of somewhere about one meter with special stops for the processed billets.

Price to bench bench depends on several factors, including material from which the bench is made. Wooden benches are used for work in carpentry, metal – in car repair, plumbing workshops. And metal and wooden benches are also used in home and student workshops, but for the home workshop are also often used for household universal workbench. Metal benches may produce two-or one pedestal, and each pedestal can be a different number of drawers, which can save small items or tools. The design of both metal and wooden benches, mainly ready-made, which greatly facilitates their transportation. In addition to the benches in the workshop need tool rack or cabinet to store all tools and tool truck to transport them from place to place. Back in the studio need shelving, which will be based on finished products or their billets. Also for arranging the workshop can use various tools shelves and racks. A leading source for info: Eva Andersson-Dubin. Summing up, one can exactly say that using a special workshop for arrangement of furniture will provide good working conditions and, of course, to improve performance.

Latter Roofing

Margie — Fri, 12 Mar 2021 13:02:26 +0000

The oldest method of laying roofing carpet – is a way of continuous attaching a roll material to the base. In some cases it is expedient to lay roofing materials, using the so-called partial gluing. This excludes the conditions for the emergence of excess pressure due to the formation between the top and bottom of the air gap communicating with the outside air along the contour of the roof or through a special exhaust deflectors. Roofs made this way are called 'breathe'. The use of 'breathing' roof not only prevents blistering, but also helps to remove moisture from the base material (about 1 kg per square meters. Over the summer). Number of removed moisture can be increased by a fixed section air gap due to posypok applied to rolled material in its manufacture. When 'breathing' roof completely eliminated it breaks over the joints and cracks reason, since the latter strain is not transmitted roof membrane.

The disadvantage of 'breathing' roof is the difficulty of determining the place of a leak. If the roof membrane rupture appeared, where the water enters, it will be spread over all the air sinuses, and finding a loose seam in the basis, fall into the interior of the building. The appearance of a leak in the ceiling would not mean that the roof is damaged carpet over this place and find the actual leak is not easy. 'Breathing' roof is necessary for restoration of old roofing, as in the old asphalt carpet, as a rule, there is always moisture, which should enable the output.

Nature Arc

Margie — Thu, 11 Mar 2021 06:48:14 +0000

Each substance is characterized by the type of relationship of molecules and atoms. There are three fundamental state of matter – solid, liquid and gaseous, they are different distances between the atoms or molecules. In the solid and liquid states, these distances are small, this explains the low compressibility of solid and liquid substances and their common name – "condensed state". In gases, the distance between molecules is much larger, so they can relatively easily compressed under external pressure, electrical conductivity of gases also significantly different from the electrical conductivity of substances in condensed state. In solids and liquids outer shell electrons can easily lose touch with the core and move freely through the material. Free electrons, called conduction electrons carry the current in the conductors of condensed gases, in which electrons bound to their nuclei in normal conditions the current is not carried out, but in an electric arc ionized and acquire the electrical conductivity. The electric arc is one of the types of electrical discharges in gases, at which the passage of electric current through a gas gap under the influence of an electric field.

Passage of electric current through a gas is possible only if it charged particles – electrons and ions. The appearance of charged particles in the arc gap is due to emission (emission) of electrons from the surface of the negative electrode (cathode) and ionization are in the range of gases and vapors. Electric arc used for welding metals, called the welding arc. In contrast to conventional arc welding arc is an electrical arc discharge in an ionized mixture of not only gas but also the metal vapor and components that make up the electrode coatings, fluxes, etc. If the ionized air gap is in an electric field, then moving gas ions come in motion mapping and create an electrical current. However, when ionization occurs dynamic equilibrium consisting in the fact that each unit of time recovering the same molecules from the ions (, recombination), but falls apart. Thus, as soon as terminates the action of ionizing factor disappears, and electrical current stops.

Wheels For Platform Trucks

Margie — Mon, 08 Mar 2021 19:11:31 +0000

The main task and the main reason for which were set up carts – it is the movement of goods in different weights for short distances. This may be to move within the plant, factory, yard area and so on. And the main load for this rests on an essential element of a cart – the wheel. The wheel can be considered as an element of taking over the entire load. So it is when you consider that the load pushes onto the platform truck, and she in turn at the wheel. This means that the selection of wheels should be made taking into account the weight of the load and weight of the truck. If we look closely at the table of technical parameters of platform trucks, we see that the load platform Truck is in the range from 200 to 900 pounds. Itself truck can weigh in the range of 14.7 to 65.6 kg, and from this it is easy to understand that the stated load capacity ultimately rests on the wheels themselves.

On the platform truck pose two types of wheels. First – wheel and tire from cast rubber, the second – the wheels with pneumatic tires. For each wheel or wheel bearings have enough accessories to complement functionally the wheel. The most common – A brake system and wheels with tires from a gray non marking rubber floor. The latter are used when necessary to keep the floor clean after passing on him a loaded truck.

Wheel of black rubber with turn or turn truck on the site can leave trudnostiraemye footprints on the floor. Tire wheel of a gray rubber exclude such an accident. Of course the fact that the tire has a different color does not mean that it is made of another less strong or less-quality rubber, which means it does not affect the specifications and load wheels. Wheel bearings (or rollers) are located on the platform carts on the corners platform, to be exact as close as possible to its corners. Brackets castors attached to the bars below. Such an arrangement provides a stable support stability, and thus maximizes all of the cargo area of the platform. It is also a positive impact on the maneuverability and controllability .V standard truck includes two swivel and two fixed castors same height, while turning set by the handles, and it makes it much easier to manage truck. The greatest agility equipment provides four swivel wheels. In this case, the ground force is applied to rotate the push cart on the rear-wheel drive, located on the handle and the front wheels are the thrusters. Truck with a complete set requires some management skills, especially if heavy goods are transported at a sufficient speed to a rotation of inertia truck had become unmanageable. The most common example of such a truck – a food cart in a supermarket. Try to take her empty at low speed – it's easy and quite convenient. But if it is filled with food, even if the average speed after a sharp turn in time to align the cart is difficult. The reason for this is just a weight and all the castors swivel. Features castors or rollers, mounted on truck platform may be very different. They depend on various areas and purposes of the application and may be selected individually. In the future we will return to this subject and consider the region industries where applicable wheels and bearings are installed on platform trucks.

Marine Engines

Margie — Thu, 04 Mar 2021 11:41:21 +0000

Diesel engines, built by foreign firms, have their own notation. In grades of marine diesel engines, "Burmeister and Vine" letters stand for: M – four-stroke, V – stroke (second at the end of grade V – v-shaped), T-cross-head, F – marine (Reversible and irreversible main series MTBF), B – with turbocharged, H – support. Number of cylinders specified before the letters, the diameter of the cylinder – a number of cylinders, stroke – after the letters. Bisi Onasanya insists that this is the case. In the cross-head diesel engines with supercharged modification is indicated in the middle of the distinguishing mark number 2 or 3. The main factor determining the rapidity and intensity of diesel is the average piston speed (m / s) st = Sn / 30, where S – stroke, m, n rotational speed, rpm.

According to gost 4393-74 * all diesels, including shipping, is conventionally divided into low-speed, high-speed and high-speed (the speed of the piston is equal respectively to 7, 7-10, more than 10 m / s). For the analysis of particular processes (Fuel injection, blowing, etc.), marine diesel engines are divided into small, medium-and High-speed (rotation speed, respectively, to 350, 350 – 750 and 750 rpm). Must be borne in mind that separation only in frequency of rotation is not completely determines the thermal and dynamic stresses the engine. The main types of structures of marine diesel engines used on Navy ships, are: the most common diesel engines with a single-action purge transverse (plant "Russian diesel" and firms "Sulzer", "Fiat"), parallel flow-valve (firms (Burmeister and Vine "," Stork "," Getaverken "), loop (IAS firms," Polar "); Ship internal combustion engines with divergent pistons and the straight-blow (such as domestic engines ZD100, firms' Doxford 'and' Burmeister and Vine "); diesel dual-action (IAS firms," Burmeister and Vine "," Fiat "Stork", etc.) – Most of the main engines of vessels Marine diesel engines are two-stroke single-acting. Four-stroke is most often used as auxiliary or main low-power (1100 kW).

With such power, these diesel engines through the use of High boost the size, weight and cost exceeds two-stroke diesel engines. However, overseas produced four-stroke diesel engine 4400 – 8000 kW or more (IAS, "Pilstik, Fiat, etc.) which have a cylinder capacity 350-1100 kW. They are used as the main marine diesel engines on cruise ships in the diesel-gear units. Many of these types of engines (Pilstik, Wartsila, etc.) are installed on the Russian courts.