The next 20 years will be a stage of rapid development of China's nuclear power

According go the plan, by 2020,the proportion of China's nuclear power to reach 4%,to 40 million kilowatts installed capacity in 2030 after a total generating capacity of nuclear power capacity has reached 16% of the world average. Therefore, the localization of nuclear power is the key to the development of nuclear power to nuclear power plants,nuclear localization of key materials fo domestic production base.

Inconel 690 nuclear power tubes in the nuclear role of evaporator

Pressurized water reactor nuclear power plant steam generator is a circuit pressure boundary,one of the kdy equipment and bear the heat generated by nuclear reactions transmitted to the secondary circuit for power generation function.Steam generator tube bundle heat transfer accounted for one-loop pressure boundary area of 80%,at present,foreign countries areusing lnconel 690 alloy tube as a heat pipe, its research and development,prepatation and engineering application of technology has always been a Westem scientific and technological power in the core in the field of nuclear energy technical focus.China's current nuclear power plant under construction in the introduction and the steam generator heat transfer tubes are mostly 690 alloy tube matenal.Each block there are three million kilowatt nuclear power plant steam generator,steam generator,the use of each inconel 690 “U”-type heat pipe is about 55 tons,more than 4,000 the number of heat transfer tube root.The heat transfer tube porduction processes and more complex process technolgy,high quality requirements,their production and development is currently in the country is still blank.

The application of nuclear power diodes,transistors 00Cr19Ni10(Z2CN1810) heat exchange tubes in nuclear power stations

Nuclear power diodes,transistors 00Cr19Ni10(Z2CN1810) two-loop heat-exchange tubes for nuclear power stations,located between the nuclear island and conventional island,the ain circuit is a steam generator in energy transfer to the conventional island gas turbine,which will stimulate the steamship operation of power generation units in the whole plant has an important role.That part of the steel pipe specification more than the length of long, high volume,production process morecomplicated,currently in the country at the preliminary stage of production and develpopment.

July 2007 Pan Steel Group Sichuan Changcheng Special Steel Co.,Ltd.and China Nuclear Power Research and Design Institute set up a joint venture ---Sichuan Changcheng Nuclear energy special Steel Co.,the use of the technological advantages of Nuclear Power Research and Design Institute and PCSSC steel production advantages and cooperative development of nuclear 23 stainless steel tube and a loop-loop high-temperature alloy tube(Inconel 690 “U”-type heat transfer tube).Nuclear energy company's production entity,Sichuan Changcheng Steel Pipe Co.,Ltd.,the copany is one of the doestic,as well as Asia's most powerful stainless seamless steel pipe manufacturers,Its production advantages:

(A)Advanced smelting technology and equipment:

Steel smelting furnace can be ,respectively,2ton/6ton vacuum induction furnace, 5-ton electro-slag furnace,P7 vacuum consumable electrode furnace fefining furnace,etc.to complete in order to ensure the purity of steel.

(B)Advanced Pipe Technology and Equipment

1,the introduction of international advanced level of equipment 3150 tons extrusion unit, the device is difficult for high-temperature alloys deformed metals production.2,using advanced modern Pilger cold-rolled pipe length,size,high precision and good surface quality.3,U.S.imports of bright heat treatment furnace muffle tube,using automatic temperature control and heat meter speed,furnace temperature and the tube temperature error of less than +-5oc,after heat treatment of steel pipes to ensure that the surface of bright, organized an excellent,stable performace,the same batch small differences in heat pipe performance.4,from Germany to introduce an eight-headband-type polishing machine polishing belt elastic contact with the pipe will not cause burns on the surface of the tube will not affect the use of the product performace.By polishing.can further improve the surface quality of steel and size tolerances,thereby to obtain accurate size and smooth surface.5,the company has many sets of ultrasonic flaw detectors,eddy current flaw detector,fully satisfy the requirements of ASME and RCCM standards,which the copany imported from Germany Nuke Mu set of the current system of pipes in China's metallurgical enterprises in the most advanced ultrasonic/eddy current Joint Inspection Unit,can be vertical and horizontal pipe length testing,flaw detection and high accuracy.

(C)perfect quality assurance

Sichuan Changchent Steel Pipe Co.,Ltd.passed the Certification Center of China's new era of national military standard quality system certification,nuclear power company is currently under HAf003"Nuclear Power Plant Safety Requirements of Quality Assurance" and related guidelines,the establishment of a "nuclear-pipe manufacturing quality assurance system."

In order to speed up the nuclear steam generator heat transfer tubes made of materials such as nuclear engineering process,and enhancing our own R&D capabilities,promoting the development of China's nuclear power industry,in jujy 2007 Panzhihua lron and Steel Group,Sichuan Changcheng Special Steel Co.,Ltd.and China Nuclear power institute a joint venture of the Sichuan Changcheng Nuclear Energy Special Steel Co.,the joint development of nuclear power diodes,transistors tubes and steam generators with Inconel690"U"-shaped.

Sichuan Changcheng Nuclear Energy Special Steel Co.,Ltd.positioning of special steel products for the nuclear engineering research and development,production and sales,including from the extruded tube blanks to finished tube,the product profile of the whole process'sinitial production target of 350 tons of nuclear power tubes Planning for the annual production target of 500 tons of nuclear power tubes and other nuclear engineering with a special flat steel,bars and other products.

Copany's main production----Pangang Group Sichuan Changcheng Special Steel Co.,Ltd.is China'skey R&D of special steel production base in key national defense industry company,is a domestic cheical,fertilizer,chemical fiber tubes and aviation and aerospace professionals with the stainless steel tube manufacturers,has the doestic advanced lever of technical equipment and testing.testing tools,such as cold-rolled tubes of advanced production technology,degreasing technology,bright heat treatment technology and ultrasound combined eddy current testing technologies,and products of superior performance,for the nuclear power tube research and development and production provides and important basic condition.Nuclear Power Institute of China is "the cradle of China's nuclear power project",is engaged in nuclear reactor engineering research,design,testing,operation and mass production as one of the large-scale comprehensive research base,has designed,built China's first press water type nuclear power reactors,the first High Flux Engineering Text Reactor,the first pulse reactor,in order to Qinshan,Daya Bay,Lingao,Tianwan nuclear power plant to provide technical and back-up.

The company in 1996 in accordance with GB/T19002-ISO9002 "Quality System - Production,installation and Service Quality Assurance Model" established and passed the quality system certification,and in 2002 successfully passed the 2000 version of the switch version of the work;in 2007,Pipe through a national military standard GJB9001A-2001 quality management system certification.

Company to obtain machinery and equipment for civilian nuclear safety,nuclear grade pipe manufacturing license in September 2007 had full knowledge of the nuclear quality assurance,training and organize relevant personnel to prepare a nuclear power diodes,transistors tubes of the Quality Assurance Program Overview and Outline procedures,all documents have been submitted to the National Nuclear Security Administration on May,2009.At present,it has entered into the stage of making sample.

In August 1999,the company with the Beijing University of Technology,Nuclear Power Institute of China co-operation,adopt advanced smelting of special tooling equipment,plus a vacuum induction furnace smelting technology ESR double by open forging billet,hot-extrusion system of tube following the introduction of SKW75VMR,KPW25VMR mechanism for cold-rolled tube,has successfully developed 19.05*1.09*6500mm standard of nuclear evaporation Used for Inconel 690 sample tube(straight tube),and through the internal appraisal.By the end of 1999 also completed the 15*1.359*6000mm straight pipe trial of Inconel 690.And in early 2000,the Nuclear Power Institute of China's nuclear simulation run 100 hours on the body of scientific research and experimentss.