Carbon steels are a type of instrumental staley.Oni widely used for the manufacture of metal-working tools, various accessories and parts engineering (shafts, gears, bushings, etc.), instrument making, shipbuilding and stankostroeniya.Svoystva carbon steels determined by the amount of carbon content in them and depending on this carbon tool steels are divided into grades. High-quality carbon steel (grade A) have fewer contaminants and less prone to cracking during quenching and shlifovke.Oni less dye and therefore preferable in the production of more complex form tools in steel and detaley.Uvelichenie carbon content increases its hardness, but at the same time and were not hrupkost.Uglerodistye have red hardness, ie can not retain the hardness when heated to 300-400 degrees Celsius. The original structure of carbon steels to provide them with good workability and structure meets the conditions zakalivaemost.Etim fine pearlite with uniformly distributed grains of excess tsementita.V depending on the carbon content of carbon steels have rzlichnoe application. For the manufacture of percussion instruments, such as: chisels, axes, stomestki, brand, sledge hammers and other uses carbon steels U7 and U7A. Steel U10, U10G, U10A used for tools and parts with high strength and toughness of some intended for the unstressed work wear: taps, dies, drill bits for wood, tapered and shaped gauges, bushings and clamps konduktornyh. Steel U12 and U12A – for instruments with very high hardness in the unstressed work: countersinks, reamers, taps, surgical tools, metal saws and other tools used in metalworking, woodworking, etc. Steel U13A and V13 – for high hard tool with thin blades: engraving tool, blades, scrapers, wire-drawing tool.

Electromagnetic shut-off valves. Appointment, classification, description. Valves with magnetic actuator designed for installation in pipelines as locking devices for rapid, remote cutoff medium flow. Conditional pass solenoid valves typically have a small value of 6 40 mm. This is due in the main by the fact that a low pulling force of the governing body, ie, an electromagnet. The solenoid valves are classified as follows: by the nature of current-alternating electromagnetic drive, or permanent sealing of mind – and packing in the form of semihermetic – normally open and NC (normally open valve (NO) is opened in the absence of current and closes when power to its drive, normally closed (NC) is in the closed state in the absence of current and opens when the power supply to drive it) by the method of action – direct and amplified electromagnetic drive integrated directly into the valve and the core is its spool. This control spool moves force of the electromagnet. In turn, the electromagnetic actuators are divided by type of magnets on: reverse, pulling, pushing, turning to the core.

Valves with integrated have driven the size and weight with low values. The coils are made at 24, 127, 220, 380, 440, 50 Hz, 60 Hz. Submission of the working environment is carried out on the spool or a spool. The valves must be tight with respect to the external environment in ground cushioning joints. Materials used solenoid valves – carbon steel, stainless steel, brass.

Operating position to a horizontal line – up by an electromagnet. In the absence of electric valve can be opened by manual override (if it's by design). Examples of some of the symbols of solenoid valves – 15b816r, 13s810r, 15b806r, 15862bk etc. A variety of work environments in which solenoid valves have been used very large: steam, natural gas, condensate, air, water, water with impurities, mineral salts and nitric acid, ammonia, liquid, halocarbon, inert gases, alcohol, and more. Due to its benefits of the solenoid valves are widely used in various branches of modern industry.

Monitoring the technical condition of marine power plants are a special classification societies. In Russia, performs the functions of these societies, the Russian Maritime Register of Shipping (RMRS), which is included in the Ministry of Transport on the Rights of the Main Directorate. In the main sea basins created basin inspection RMRS (Black Sea, Pacific, North, Baltic), in charge of the linear inspection attached to ports, ship repair or ship-building factories with a staff of inspectors on the Register of cabinet, mechanical parts and elektronavigatsionnoy ship. Ship power plants, should be constructed or repaired in accordance with the requirements of the Register (ship power plants will wear a special cord book). RMRS provides technical oversight for design, construction, operation and repair self-propelled vessels to ship power plant with capacity of 73 kW and higher self-propelled vessels of 80 per. tons and above, as well as technical supervision of the self-propelled vessels operated from ships power plants with capacity of 18 kW and above-borne craft a capacity of 20 per. T or higher.

How RMRS oversees the state of ship power plants? Supervision of the technical condition of ships, in operation, carried out by RMRS annual, regular, special and dock examinations. In the annual survey is determined by the technical condition of the vessel, its hardware and marine power plants, which are tested in action, as well as the ability to save the ship in the class of RMRS. Regular examinations are held every 4 years to determine the degree of wear ship as a whole, including its power plant, the possibility of its further exploitation and preserve his class. Extraordinary examination carried out after the accident and landing on a bank to determine the conditions under which can be saved or restored class RMRS. ORGANIZATION OF REPAIR Based on what documentation do repairs of ship power plants. Ping Fu might disagree with that approach. One of the most important parts of the ship repair enterprise engaged in the organization of repair of ship power plants, is the main section of the builder. This department is preparing a repair, selects repair documentation, met with the repair BOM, prepares requests for logistical support, is responsible for the quality of the repair ship power plants.

According to records in the ship's documentation, as well as on the basis of technical documentation manufacturers and regulatory documents, instruments for the inspection of power plants, machinery, electrical equipment and other parts and inspection of acts of supervisory inspections of the vessel, acts and regulations of the supervisory bodies are made repairs statements, which are the basic document that defines the range of repairs to the power plant of the ship. Repair record – the basis for determining cost, time and technology repair. For the series-built vessels using standard repair sheet (TEV). In determining the actual amount of repair work positions that require no maintenance, are excluded. Presented at the repair record company are calculated.

Company JVC Professional introduced the analog video camera TK-C9510E day-night", which transmit the image tsvetokorrektnoe in adverse lighting conditions. New items are used 1/2inch CCD-matrix, 14-bit DSP processor is the latest generation to form a video signal with a resolution of 580 TVL at illuminations to 0.025 / 0.003 lux. To be effective in a particular video object unit supports technology Super LoLux, ExDR Plus, noise and inverter 3DNR bright illumination HLI, as well as a comprehensive range of quality settings and 8 preset modes Scene Memory, including fog. In addition, TK-C9510E is equipped with a x2 digital zoom, motion detection and alarm input and uses the remote configuration protocol telemetry JVC and Pelco P / D. The high performance obtained with the TK-C9510E provides images 1/2-inch CCD-matrix of interlaced and 14-bit DSP processor generation digital video processing 2010 With such filling could improve the performance of the camcorder, the resolution to 580 TVL, signal to noise ratio to 52 dB and implement a series of new technologies to improve video quality. In addition, the new camcorder has a Mechanical IR filter for shooting in the "day-night" and transmits color / black and white image with a minimum illumination of 0.05 / 0.006 lux, and in the accumulation mode frames Sense-Up – to 0,025 / 0.003 lux. New cameras will work effectively for objects with complex lighting conditions, such as when they are installed in front of window frames, doors and other sources of bright natural / artificial ambient light. .