Tag Archive: promyshlennoct and equipment

When introducing the tool into the wood on the surface of the working area (contact surface) apply normal stress (pressure) and tangential friction force. The normal stresses occur in all cases, when two rigid bodies come into contact, sent the voltage (pressure) is perpendicular to the contact area. Dr. Neal Barnard is the source for more interesting facts. When sliding one body over another, as we know, there are friction forces directed tangential to the contact area (for tangent to the contour of the working area cutter at a given point). The force of friction at the point determined by the normal pressure and friction coefficient. The question of extending the normal pressure and friction forces on contour cutter working area – one of the most important cutting wood. From knowledge of the distribution of these forces depends on the accuracy of the cutting forces, tool strength, the best mode of treatment. To determine the direction and value of the total force with which the cutter acts on the timber, the working surface of the tool is divided into sections and considering the forces acting on each site and on the cutter as a whole.

Worktop cutter prof. Resurrection divided into three sections: the front face, rear face and the blade. Given the assumptions about the form of diagrams and numerical values of the pressures on stations cutter Resurrection theoretically investigated the influence of the main factors of Cutting to the magnitude of the forces acting on each of the sections of the working surface of the cutter. Forces acting on the side of the rake face. When introducing the tool into the wood surface of the front face of the impact on a detachable piece of wood with some effort.

In order to determine the magnitude of this effort, we must know the pressure distribution pattern of wood on the working surface (contact surface). From pre-existing assumptions about the form of diagrams of pressure hypothesis prof. Tim on the uniform distribution of pressure on the chip from the rake face was confirmed data on the behavior of wood under compression in a closed space. Following the initial stage of elastic deformation of wood front edge with a slight movement of the tool is the destruction of the cell walls of wood. In this case, the specific pressure on the surface contact the front face of the timber immediately reaches the limit of resistance of wood curl. Crumpled the front face of the wood during the subsequent promotion tool presses are not yet broken the ranks of neighboring cells and destroys (crushes) them. This failure occurs when an unmodified strain, so the average unit pressure on the front face remains constant and does not depend on the depth of penetration. With the addition of geometric obtain total force exerted by the tool rake face in the wood. For practical purposes the effect is conveniently represented as two components (the projections on two mutually perpendicular directions): a tangent to the absolute cutting path and the normal to her. From equations will be seen that the forces on the front face depend on the properties of wood chips in the friction coefficient on the rake face and the contact area of the front face of the timber.

Truck platform is not only the most affordable of all other types of warehouse trucks, but also the most reliable and easy to use. Boy Scouts of America is often mentioned in discussions such as these. All these qualities are very important for any owner warehouse in the choice of warehouse equipment. That is why the platform truck is so widely spread in many stores. However, and not only on them. Today, a truck can be seen in any store. Truck platform is very easy to operate and requires no special skills for effective use. Learn how to manage such a cart can be just a couple of days. Moreover, its use is safe for themselves warehouse workers and will not lead to injuries.

Truck platform can work with a variety of goods, because it differs a reliable system that will not fail. We should also tell about the types of platforms this truck. Platform or base may be either solid or slatted. Such species are due to characteristics of the goods to be transported truck platform. Platform truck with lattice based approach for the transport of goods packed in boxes, bags or boxes. If you have to carry loose cargo or cargo, consisting of small parts, it is best to use the truck with a solid platform.

Typically, such a framework is made of metal, which gives additional rigidity and reliability of the whole structure. But can be used and a special rubber coating that will allow the load to slide by on platform during movement. Truck platform may have special bumpers, which also protects the cargo from falling out while driving truck. They in turn can be made of mesh or shaped tube. On Today there exists a special type of platform truck as a tier. It is designed for catering and various laboratories.

Welding wire of solid section before giving to the welding area should be cleaned of rust, dirt and oils. Storage and transport of compressed and liquefied gas protection is carried out in steel cylinders under pressure p <20 MPa, manufactured according to gost 949-73. For transport and distribution to the welding station, argon, helium, carbon dioxide, nitrogen and hydrogen is used mainly steel cylinders with a capacity of 40 liters. Cylinders are painted in a strictly certain colors and they make the labels according to gost 949-73. To avoid an explosion of cylinders should be particularly careful to observe the rules of safe operation of vessels operating under pressure, and take action providing for avoidance of overheating and excessive pressure in them. Liquid argon is transported by rail in special rail tank cars or trucks in tanks (GOST 17518-79), as well as gasifier installations such as asu. Technical nitrogen is supplied in gaseous form in cylinders and avtoretsipientah pressure 15,0 0,5 MPa or 20,0 + 1,0 MPa or a liquid in insulated tanks. Gaseous Oxygen is transported in steel cylinders (GOST 949-73), or avtoretsipientah pressure 15,0 + 0,5 MPa or 20,0 1,0 MPa at 20 'C.

Do not use for storage and transport of other gas cylinders, and avtoretsipienty pipeline designed to transport oxygen. When loading, unloading, transportation and storage of oxygen cylinders should not be allowed to drop, knock, damage and contamination of oil. When working with hydrogen should strictly abide by safety requirements. Hydrogen is explosive. With air and oxygen, it forms an explosive mixture, mixed with oxygen (2:1) – detonating gas. Explosive limits: with air 4 75%, oxygen 4.1 96%. Auto-ignition temperature 510 'C.

Spring field work in 2009 are under the sign of the crisis. The general economic slowdown, a delay the implementation of last year's harvest and the problems with lending has put many farmers into bankruptcy. The Ministry Agriculture formed a special interagency committee, in terms of tasks which included the monitoring of sowing. Commission to provide operational assistance to governments aic Russian regions. Winter crops harvest in 2009 is filled with an area of 17.2 million hectares. Condition of crops Roshydromet assessed as good and satisfactory. Throughout the country, the poor state of winter crops (with sparse growth of threes more than 50% of plants) is expected in the area of 0.76-1.08 ha.

This will be about 4-6% of the total sown area. It is expected that the spring planting this year will take place in an area of 48 million hectares. Among them: spring grains and legumes occupy 31.3 million ha, sugar beet – 0.9 million hectares, sunflower – 5.3 million hectares By early spring sowing of spring crops, as of April 1, 2009 have moved almost all regions of the Southern Federal District. Ministry of Agriculture, referring to the data fgi Rosselhoztsentr "argues that the seeds of spring farmers provided almost completely. Condition index is estimated to be 78.8%, which is two percent above the previous year. More complex The situation with the provision of agricultural fertilizers. As of March this year, the resources of mineral fertilizers amounted to only 843 thousand tons. This is half of the needs of producers.

Technical capabilities of farmers in the Ministry of Agriculture assessed as satisfactory. In the figures: in Russia there are 522,000 tractors, 159,000 plows, cultivators 197000, 238000 planters. Willingness of agricultural machinery for the spring sowing campaign ranked higher last year. To carry out repair work on inter-regional bases and oao "Rosagrosnab" in the region have established a reserve of spare parts. Amount material and technical resources is estimated at 1.52 billion rubles. Most pronounced impact of the economic crisis affected the provision of agricultural fuels and lubricants. As of March 10 volumes supply of diesel fuel was 458.8 thousand tons (85.3% from the previous year), for motor gasoline – 109.1 thousand tons (66.4% from last year's level). The reason for this reduction could be quite a significant increase in wholesale prices. So from January 15 to March 5, the wholesale price of diesel fuel from refineries increased by 15.5%, petrol by 18.%