KG. (Germany), Synventive Molding Solutions (USA, Netherlands), Watlow Company (USA), Heatlock (Sweden), etc. Melissa Selcher contributes greatly to this topic. As a rule, the production of hot runner systems for these enterprises is associated with the production of temperature controller for them. There are also companies that specialize in production only for hot runner controllers. These companies include: Athena Controls, Inc. (USA), PMS Systems Ltd (UK) and other elements of the system cooling cycle of casting more than 50% consists of a fan belt casting.
For soszdaniya reliable in the system cooled the mold tech in manufacturing and maintainability in service, offers a variety of standard components: quick-connect, play, fortaniruyuschie tube, turbulence, heat Trebkov, Heat Sink marks, seals, zglushki and cork. Connecting ssitemy cooling the mold with hose refrigerant source (thermostat, coolant, circulating guild line) is recommended to quick connections, consisting of a nipple and coupling. Elements of the cooling system, are usually present in the directories of manufacturers of standard parts for injection molds. In same time, there are companies that specialize in manufacturing cooling elements. Processing of the mold main part of processing elements of the mold is carried out on CNC milling machines and EDM machines.
Processing technology involves three stages of mechanical treatment, and three – heat treatment: Annealing – roughing – normalization – Finishing treatment – hardening – finishing – plating. Annealing required for any procurement of residual stresses; For roughing removed the bulk of the material, allowances for working surfaces – 0.5-2 mm. Normalization (annealing) is necessary to remove the main stress in the workpiece, it reduces the risk of large lead during quenching.
2. Opportunities for regulation of basic and additional parameters finisher: As a rule, door closers have control of two key parameters: 1) Force dohlopa doors, 2) the rate of closing the door, although a more responsible mechanisms are set more complicated. Effort dohlopa doors can debug the device in such a way to the recent increased rate of 7-15 , and the lock clicks. Closing speed – it’s fast (or, conversely, slow), closing the door after you have entered. Peter Thiel often says this. To protect the wall and door frame itself closer against damage from sudden the door opens, for example, in the wind, it is important to adjust the speed and opening.
Models with brake function is recommended to use on exterior doors of buildings. Several mechanisms have also a useful function hold-open (useful for removal of bulky cargo, frequent walking, for example when loading (unloading), usually used in warehouses), and springy stop maximum angle of plowing. 3. Place finisher attachment: The place of attachment distinguish the top and bottom (floor) closers. Floor closers – are mounted on the floor, at the same time serve as reference loops, ideal for swing doors. Their installation should take into account already at the design stage.
Floor closers can withstand the greatest weight of the door (up to 300 kg). Closers can be hidden – they cut into the end of the door and the door closed can not see them. 4. Credit: Technology Investor-2011. Operating temperature range: When the door closer must take into account the conditions under which it will operate at any temperature difference is calculated. Now available with a heat-stable variants temperature range from -35 to +70 C or cold-resistant products, designed for the cold to -45 C. 5. Special purpose doors: The doors of fire and dymoizoliruyuschie required installation of door closers, supplemented by special electrohydraulic or electromagnetic elements. However, these closers must have certificates of compliance with fire safety regulations. To install on closing fireproof door closers certified experts recommend. 6. Lifetime: The reliability and service life finisher is the minimum number of cycles of opening and closing doors, which closer should work without derating, regardless of operating conditions. According to the standard EN1154, door closers must work at least 500 000 cycles. 7. Design of the device: Manufacturers offer decorative plates for closers in different colors – white, dark brown, a silver, bronze and more. At the request of the customer, some companies offer optional color in any shade in the catalog RAL, that allows us to completely imperceptible closers in the interior. 8. Price finisher: The price range is from 400 to 3,500 rubles. Depending on additional options and functions of the cost may increase. With the right mix functions closer to you become an effective assistant. And do not forget that closers need to be changed periodically. If out of the door closer was the leak oil, no longer hold the door control does not help, it should be replaced! Closers are not repairable. Reveal closer dangerous because there be cocking spring! The company ‘Technocom El’ supplies and installation of closers.
Ghost 22 584 states that the hoist – lifting device is a pendant with a manual or motorized. Today, every service station, warehouse and production plant are used in their daily work hand hoist. Depending on preferences, working conditions and the type used by different models: gear chain hoists, lever hoists, wire rope hoists and electric hoists, etc. are allocated (elektrotali) and manual hoists. Electric hoists Electric hoists can be divided into two types – chain and rope. The choice of lifting mechanism depends on the weight of cargo that must move and intensity of use. Tali electric cable today perhaps the most popular in the world of lifting equipment used in companies with high rate of work. In Russia, the technical requirements for cable-talyam stated in GOST 22 584.
Load capacity wire rope hoists are sometimes higher than 100 tons. Payload another variety of electric hoist chain, is no more than 5 tons. The rope used in the first model, a more reliable, easy and cheap traction element than the chain, in which there is always a weak link. That quality makes the traction element model hoists so different in design. Average lifting speed chain hoists within 2 …
5 m / min, and cable – 5 … 12 m / min. Electric hoists are undemanding in operation and are suitable for work at temperatures from -63 to +40 degrees Celsius. Chain hoist is used as auxiliary structures for cantilever-cranes. Elektrotali rope used too and the overhead crane for lifting and transport medium and heavy loads, because the duty on wire rope hoists chain excel. The basis of the assembly in an electric hoist – a block mechanism sotoyaschy of motor, reducer, drum or sprockets, brakes, hooks and lifting element. Drum are only in electric cable talyah, and the star – only to chain elektrotelferah. Tal is equipped with a portable control unit, which enables comfortable control mechanism. Available storage equipment of two types – mobile and stationary. Portable models are moved in the vertical and the horizontal plane. Hand Blocks Tal manual for those companies and industries that have no need for lifting at high altitude and in the fast pace of work. They can be hung on a stationary or mobile cat when there is a need horizontal movement of the loads. Tali ruchnyeshesterennye and lever can primenyatsyadlya lifting and outdoors, and indoors, including in a limited area (trenches, wells). Capacity hoist hand is usually up to 10 tons, in special cases – up to 50 tons (such arrangements are made to order). In the manual gear talyah as heavy-lift element applies round-chain 3 m long or more. In the lifting of the load lever talyah performed by acting on a lever mounted on the hoist. Carrying capacity offered hoists up to 3 tons, lifting height of 1.5 m.
Mining equipment industry has excellent prospect The realization of global economic integration promotes China s industries and enterprises in various fields gradually open up the international market; the mining equipment industry with the most widely used mechanical devices, it is explore the international market successfully and usher in greater development space. In this way, while promoting the development of China s mining equipment industry, the technical level of China s mining equipment is improved. Now, the mining equipment industry in China has been on the right track, all types of mining equipment products have been rooted in the international market, and get a certain degree of competitiveness in the market. Today, the environmental protection industry has been facing the international development, so the development of the mining equipment industry also should tend to environmental-oriented direction; in fact, the traditional large-scale mining machinery in mining operations inevitably impact on the environment, and the mines equipment industry enterprises should pay more attention to improve the level of technology and product reduce resource consumption and pollution of the environment, after all, only the green production model is the key for stable development of the industry. With increasing of foreign economic construction, mining equipment demand is also increasing, which will increase the intensity of competition between the enterprises of the mining equipment industry, it cannot help but to stimulate research and development efforts of the mining equipment in China so that it can stably develop in the fierce competition. At this stage, the mining equipment industry is thought have the most excellent prospects in China. Domestic crusher manufacturersshould continue to improve the technical level of cement plant to strengthen their competitiveness in the vast international mining equipment market and drive the booming of domestic mining equipment industry! Rock crushers: Impact crusher: