Adhere to the direction of detailization in CC technology and equipment

Since the excessive capacity in steelmaking and continuous casting at present,and the limited development margin of CC technology and equipment in scale,the further development must be made in a profound and detailized way.This paper enumerates the items of CC technology and equipment,which need to be detailized from several aspects such as roll arrangement design,equipment design and production operation,and it points out that detailization is the future direction of CC technology and equipment.The items in roll arrangement design include eliminating periodic meniscus fluctuation by adjusting space between rolls reasonably;taking special measures to avoid dangerous regions of casting speed,in order to reduce the center porosity and centerline crack of slab;optimizing the major radius and the length of outer arc of caster before straightening point to avoid dangerous region of casting speed.The items in equipment design include choosing a suitable structure of support and guiding roll according to the concrete conditions of caster;according to bulging shape of slab,thinking more about restriction of shell to bulging force, discussing the force on rollers,optimizing split roll to support slab;safety factor should be considered together with calculation method of the bearing nominal static load.The items in aspects of continuous casting operation include the delicacy division and the function-positioning of operation modes for CC machine due to the consideration of dynamic soft reduction;monitoring and controlling system of CC machine must be further detailized to improve the stability of production operation and slab quality.In addition to the three aspects mentioned above,this article points out many other items also,such as homogenization of secondary cooling of slab,quality control of surface and internal of slab,and so on.This article emphasizes,some key technologies need to be researched also,and all these researches will never stop.

Development of welding technology of hydroelectric power equipment

Hydroelectric power equipment consists of a hydro-turbine and a hydrogenerator whose weldments have the features of complicated construction and large bulk as well as some parts operating under water. With the increase of unit rating of the hydroelectric power equipment, the application field of high strength steel and dissimilar steel has been enlarged. What to be introduced in this paper is the development of the welding technology of large hydroelectric generating equipment in China since the 1970s, and the development orientation of its welding construction and procedure in the future.

Laser Technology and Equipment

5W CW Diode-Pumped Solid-State Green Laser；QCW Diode-Pumped Solid-State Green Laser；High Beam Quality Diode-Pumped In-Frared Laser；High Beam Quality Diode-Pumped Infrared Laser；QCW Diode-Pumped Solid-State UV Laser；

Yamal LNG Project and Made-in-China Equipment Going Globally

The Yamal LNG project in the Arctic area of Russia(Yamal LNG) involves many aspects including management of the project's finances, construction of LNG plants and special ships, exploration and development, liquefaction, storage, transportation, and distribution of natural gas. The project is very demanding in terms of quality, standards, and technologies required. China was chosen to carry out modular fabrication for the projects. Six Chinese offshore engineering companies were awarded with contracts to manufacture modules that weigh more than 400,000 tons. Other Chinese companies were also enlisted to provide manufacturing, production, and processing assistance along with material and equipment supplies for the project. Their involvement in the project showed to the world not just their comprehensive strength in both LNG technologies and equipment fabrication but also their potential to become a world class competitor in the petroleum engineering market, as demonstrated by their strong capacity, attractive cost, and short delivery period for module fabrication during their participation in the Yamal LNG project.

Effective Technological Equipment for Mass Production of Entomophagous Insects and Mites Used for Biological Control

Mass production of entomophagous insects and mites is necessary for the practical use of biological method of plant protection in agriculture. For many insects, breeding is carried out at the level of industrial technology with the appropriate equipment. The main purpose of the research was to improve the technical and economic performance of equipment in the production of entomophagous insects and their hosts by optimizing equipment design and technocenosis management techniques. In laboratory experiments with using the planning of multifactor experiments, the parameters of cages for breeding were determined optimally. On this basis, sets of equipment for the trichogram, brakon, lacewort and phytoseulatus have been developed. The specific productivity of new equipment provides the necessary profitability of production.

Influence of Light Rare Earth on Toughness of Welded Seam of LAHS Steel

The influence mechanism of light rare earth elements, which are transited to the welding seam of low-alloy high strength (LAHS) steel through the covering of t he electrode, on the toughness of the welding seam was studied. The experimental results show that proper amount of rare earth elements can desulfurate, dehydro genate, reduce inclusions and purify the structure of the welding seam. Rare ear th element additions have the effect on welding seam and, at the same time, the transformation of side-batten ferrite is resisted while the pin-ferrite s tructure is promoted. The improvement of the toughness of the welding seam is du e to the purifying action of rare earth elements as well as their refining effec t on the structure. However, the toughness of the welding seam can decrease whe n the amount of light rare earth elements are added excessively because the crys tal grains become coarser, porosities appear and the inclusions increase as well . The experimental results show that the suitable amount of light rare earth ele ment additions is about 2%.

Managers and Information Society： A Croatian Experience

In modem society information has become one of the most important resources, playing a crucial role in everyday life. As a result, information technology （IT） is now an indispensable tool in the business world, which has a direct impact on company competitiveness and performance. With all the changes in business environment there is also a dramatic shift in the way the management functions. In order to efficiently perform their tasks and thus rise up to the challenges of the information society, managers need not only to master appropriate IT skills, but also to understand the processes launched by the information revolution. The aim of this paper was to determine the extent to which Croatian managers are prepared for the information society. In addition to the data regarding the level of IT equipment at managers＇ disposal, the paper presents the results on computer usage, self-assessment of IT competencies, and the level of acceptance of modern technologies. Although satisfactory attainment has been recorded in some areas, the results of the analysis reveal that additional effort should be devoted to further improve computer and information literacy of Croatian managers.

Improving the Efficiency of Mechatronic Systems in Order to Ensure Intensive Reform“Industry-4.0”

The presented work will show the highest relevance of solving all the issues related to this problem and present the results of the analysis of the main expected potential problems,which may occur in the implementation of the INDUSTRY-4.0 reform.It is proved that the pace and level of development of this reform will be determined to a large extent by the effectiveness of the individual nodes used and the entire mechatronic system.It has also been established that as a result of systematic miniaturization of the nodes of radio-electronic equipment and microelectronic equipment and microelectronic technology,the main problem of these reforms and the implementation of complex technological processes is instrumental and technological support,especially with cutting micro-tools and equipment.Therefore,on the example of these investigations,methods for improving their performance are shown.

Innovation Shapes a Better Futur

In the past few years China has consistently and increasingly encouraged innovation,making great headway in such sectors as heavy equipment manufacturing,high-speed rail,biopharmaceuticals,new energy and robotics.Innovation has become an important engine boosting economic and social development in China.

Technical innovation in the “Beishan No. 1” hard rock tunnel boring machine for high-gradient spiral tunnels

1 Project overview The“Beishan No.1”,the world’s first-ever hard rock Tunnel Boring Machine(TBM)tailored for high-gradient spiral tunnels,constitutes a pivotal element within the Beishan Underground Research Laboratory(URL)initiative in China.Beishan URL,the first URL for geological disposal of high level radioactive waste(HLW)in China,is a national key construction project listed in the“13th Five-Year Plan”.In 2019,subsequent to receiving approval from the China Atomic Energy Authority,the Beijing Research Institute of Uranium Geology(BRIUG),serving as the project’s owner,initiated its construction.This underground facility,categorized as a“third generation”URL for HLW disposal,i.e.,area-specific URL,was located in Beishan,Jiuquan City,Gansu Province,China,following more than three decades of rigorous research on site selection.