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| Positive shot blasting surface treatment bolted plates advantages | | Posted by：admin Published：2013/3/1 14:22:48 Click：3011 | December 25 to 26 in Nanjing, Jiangsu Province Bureau of Quality and Technical Supervision Organization research projects appraisal meeting held by the national grid and steel structure products quality Supervision and Inspection Center (quality inspection by the Xuzhou City) commitments "the bolted plates friction surface quality inspection methods research" subjects research results successfully identified by the appraisal committee. By Hohai University School of Civil Engineering and Transportation, Professor Cao Ping Zhou, Jiangsu Province Science and Technology Department senior engineer Li Taisheng, Huaihai Institute of Technology School of Civil Engineering Professor Yang Min, Jiangsu Provincial Architectural Research and Design Institute Co., Ltd. is senior engineer Lu Zhongqiang, Yangzhou shepherd Steel Structure Engineering Co., Ltd. Engineering Wang Yuan Jian experts appraisal committee agreed that the project as a whole in the domestic advanced level, which is the leading domestic level four factors and three levels orthogonal method.
The project period 2009 Provincial Quality Supervision Bureau approved the project, the project total nvestment of 38 million yuan, the main contents include anti-slip coefficient on the quality of the bolted impact, anti-slip test methods. Improved bolt plate anti-slip test methods, to solve the problem of anti slip test data uncertainty is too large, the formation of new test methods, in accordance with the actual late formulated specifically for anti-slip coefficient test to lay a solid foundation for the standard or specification, Research of the project to achieve the "three for the first time: First, first proposed the use of high-strength steel structure used in orthogonal design study environmental conditions bolted the bolt axis force change through the four factors and three levels orthogonal test master level of each factor on the pre-tension of the extent of the impact of high-strength bolts; first proposed positive shot blasting surface treatment is superior to conventional shot blasting way through specimen storage period a comparative study;, first proposed the use of acombination of slippage and force of bolted plates anti slip test methods for detection, research and development of the slippage detection devices and computing Software. The research results of the project can be widely applied to the bolted plate anti-slip test, is directly related to the stability of the steel connection, involving steel building security issues, the relationship between the national economy and the people's livelihood. The results of their research will continue to carry out follow-up research and improvement, and promotion applies to other performance testing of bolted plates.
Projects in the R & D process, the center design bolted plates anti slip friction surface test for detection devices, preparation the corresponding detection software, the amount of slip during the test and The real-time measurement of the value of the force to improve the detection efficiency and accuracy, and obtained national patent. Currently, the center has accumulated R & D bolt ball detection fixture, more than 10 of the threaded mandrel, emulsion online monitoring and remote transmission device detection auxiliary equipment, including four kinds of technological achievements utility model patent certificate was issued by the State Intellectual Property Office.
At this point, the shape and position of the national grid center Total grid structure quality and safety testing technology, grid structure node detection technology research, grid component dimensions - three-dimensional coordinate method 5 research projects through the identification and acceptance of the detection technology, steel bolted plates friction surface quality inspection method technology research, and another seven established projects under development in progress.
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