Advanced Materials Research Vols. 299-300

Abstract: This paper presents a vibrator of linear standing wave ultrasonic driving. The driving vibrator works with in-plane bending vibration modes and the vibrator structure which contacts with the guide on both sides is long ring and increases driving force . Based on mode analysis, the working principle of long ring vibrator is analyzed. The vibrator of linear standing wave ultrasonic driving is developed, which has been tested and analyzed. The experimental results further verify the correctness of the theory analysis.

Abstract: Anisotropic behaviors of high strength steel grade SPFH590 and HPFC780 used extensively in automotive industry are explored. V-bending tests were carried out on various bending direction. It was found that the investigated material showed little differences in the resistance to deformation and resistance to thinning from all directions. Thereafter, negligible effect of the bending direction on the degree of springback was detected. Large bend radius caused high level of springback. However, the increasing rate of springback is decreased with larger radius.

Abstract: As ventilation and dust removal equipment, high pressure blower is widely used in industry, but the heavy wear of impeller which is the core frame member of the equipment still restrict the fully increasing in the performance of the high pressure blower. So it has important significance to research and develop wear-resisting impeller of high pressure blower. The article focused on studying the microstructure and hardness of the experimental steel used in the wear-resisting impeller of high pressure blower, subjected to be processed in different tempering holding time; as well as analyzing the mechanism of the influence of tempering holding time on the experimental steel. The results show that, with the increasing in holding time, lath-shaped tempered martensite becomes obscure in experimental steel used in the Q-tempered wear-resisting impeller of high pressure blower, as well as the account of acicular martensite and bainite also increases, resulting in the gradual decreasing in hardness. Furthermore, the hardness of alloy steel decreases sharply when the holding time is more than 60 min. Thereby, the best holding time of alloy steel is considered to be 40 to 60 min.

Abstract: In this paper, the technology based on site investigation adequately, through reading, analysis and comprehensive vast literature of shield lining segments, installed spelling were analyzed, and the conclusion that some valuable conclusions. Summarizes the construction process of shield technology, and introduces the earth pressure balance type shield construction machine structure and working principle. Shield technology is with modern transportation, underground engineering, mining, water conservancy projects and municipal construction needs and developed advanced tunnel construction technology. With China's urban underground transportation facilities, the quickening of the process of shield technology has become the hotspot of domestic engineering.

Abstract: One kind of cheese kneading experiment test rig was designed, which can imitates artificial kneading movement. Response surface method was used to enhance the performance of the machine. It was investigated that the influence of crank rolling velocity, crank length and crank angle on kneading quality and efficiency. The results show that factors influence the working efficiency list in order as follows: the crank rolling velocity, the angle between a connecting bar and a kneading bar, the crank length. The best combination of optimised parameters are: the crank rolling velocity is 62r/min, the crank length is 28mm, the angle between a connecting bar and a kneading bar is 125°.

Abstract: Organization of information platform for manufacturing clusters is researched based on the characteristics of information. The characteristics of multiple sources and heterogeneity are analyzed. The information characteristics are described by four attributes-particle size, transmission frequency, effectiveness, and update frequency. Information collection and information users are geographic dispersion. The forms are diversified. The management is relatively concentrated. According to the characteristics of information, the distributed database organization is used. Function modules are organized by Cooperative mechanisms. Information organization flow chart is put forward. Multi-sources information processing is researched, which is the key technology of information organization. The study provides method guide for organization of information platform for manufacturing clusters.

Abstract: This article studies CAD technology and CAD system for vertical bag packaging machine of four edge-sealing based on modern design of reconfigurable module. The article also explains methods of reconfigurable and module for the machine. The study lays the foundation of rapid design, cost reduction and improving general.

Abstract: Against the problem on poor quality and inefficiency in the preparation of bio tissue micro array by hand, the one processing system of biotissue micro-array was developed. The application of NC image identification technology was made to carry out auto punching, auto-positioning- embedding, and auto-extracting, etc. The auto preparation of biotissue micro array was completed. The adoption of the minimum squares fitting was aimed at object’s primes to be fitted so as to obtain special-feature parameters to finish accurate position and auto rectification of deviation visual view range in micro-hole image. There by, visual deviation operated by hand was avoided and highlighted the processed accuracy.

Abstract: Aiming at the ultrasonic vibration polishing technology of silicon wafer, this paper proposes a disc-shaped ultrasonic piezoelectric polishing vibrator of out-of-plant bending travalling wave. Basing on numerical analysis, the principle prototype of the polishing vibrator has been designed and produced, and then tested. This polishing vibrator can be used in polishing process of semiconductor silicon wafer.

Abstract: This paper aims to evaluate residual stress of coated film on cold work tool steel grade SKD11 (JIS) substrate. Four types of film coating were deposited on hardened SKD11 steel. Mechanical property of film coatings was examined by nano-indentation. The thickness of the films was analyzed by scanning electron microscopy (SEM). Residual stress of coated film was investigated by using curvature technique based on the Stoney equation. The results of them were compared and correlated to the bond strength of the films from scratch testing. The influences of residual stress on bond strength of the films were thoroughly discussed in details.