August 7, a 2 meters long, 1.245 meters wide, 1.429 meters high, 1 meter in diameter and weighs about 20 tons of large overblocking valve in the Huaxia valve manufacturing, the valve is Huaxia valve since the founding of the largest R & D and manufacturing The most plugging valve. Up to now, the manufacture of this product is progressing smoothly, and machining and welding have been completed. It is reported that the block valve is a Daihai Power Generation Co., Ltd. in Inner Mongolia (hereinafter referred to as Daihai Power Generation) a 2 × 600MW Unit 2 reheater section of the hydraulic block valve reconstruction project. Blocking valve products Huaxia valve is the traditional advantages of the product, the power industry in the country reputation. Although there is no precedent for R & D and manufacturing of oversized heavy-duty block valves, Huaxia Valves has finally won this order of millions of dollars in plug valves with its numerous achievements and efforts. It is understood that the block valve project from the contract to the delivery time of less than 4 months, in addition to product design, procurement of raw materials and other preparatory work, leaving the manufacturing time of only 40 days, can be described as time-critical and arduous task. Large, overweight plugging valve, the company's lifting equipment, heat treatment equipment come into play, to all aspects of manufacturing have brought numerous tests. Therefore, Huaxia Valves attaches great importance to this work, involved in the processing of more than 10 have developed a detailed work plan and related work detailed to every day, by two managers on the site daily monitoring and issued a daily monitoring Report, keep abreast of manufacturing progress and quality control. Technology (valve technology), technology, production and various sectors work together to overcome numerous difficulties, engage in technological innovation, with a week to complete the body of the initial processing. Particularly critical welding process, due to site constraints, can only be used by hand welding, in order to strive for one-time pass, to reduce the waste of time and great inconvenience caused by rework, the company by the welding technician on-site support, guidance, valve manufacturing Dispatched experienced, high-level technical Zoulu Min, Tan Yong, Wei Min and Niu Jiao, four individuals divided into two classes, 12-hour rotation, without flame continuous welding 4 days 4 nights, on the morning of August 22 successfully completed The valve welding work. According to Wang Guihua, Minister of Valve Manufacturing Department, the plug valve net weight of 9.860 tons, fitted with valve seat, valve cover, flap, support plate, the total weight of the top plate will reach 20 tons, is a real "monster." Complete machining and welding is only part of the job. Since then, the valve will be car welding root, flaw detection, the overall heat treatment, re-testing, welding valve seat, valve body finishing, welding water pressure cover, seal strength performance test, remove the end cover, beveling, paint assembly A number of other work is expected that the plug valve will be delivered on September 20.
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