Recently, at the International Telecommunication Union (ITU-T) Study Group 2 plenary meeting in Geneva, the cloud computing standard "ITU-T M.3371: Requirements for Service" jointly developed by Datang Software and China Telecom under Datang Telecom The Management in Cloud-aware TelecommunicaTIon Management System is approved and will soon enter the AAP release process and is expected to be officially released during the year. The standard defines the functional framework and functional requirements for service management in a cloud-aware telecommunications management system and is the second cloud computing standard in the ITU-T M-series standards.
At the same time, this standard is also the third cloud computing standard released by Datang Software in ITU-T this year. The first two standards are "ITU-T Y.3521/M.3070: Overview of end-to-end cloud compuTIng management" (formally released) and "ITU-T Y.3522: End-to-end Cloud Service Lifecycle" Management Requirements (to be officially released), jointly developed by Datang Software and China Telecom, China Unicom, Microsoft and other companies. Among them, ITU-T Y.3521/M.3070 is the first ITU-T cloud computing standard jointly developed by Study Group 2 and Study Group 13, and is the first M-series cloud computing standard for subsequent cloud The development of calculation management standards has important guiding significance.
The standards of cloud computing are of great significance to the healthy development of the cloud computing industry. At present, cloud computing is in the initial stage of development, and mature industrial chains have not yet been formed. Although the industry's major manufacturers have launched cloud computing products and services, the effectiveness, reliability and interoperability between different products are difficult. Emerging technologies bring the market, but if the standards are missing, the cloud computing industry will be difficult to obtain standardized and healthy development, and it is difficult to form large-scale and industrialized clusters.
Datang Software has been deeply involved in the field of cloud computing for many years, actively tracking and participating in ITU-T standardization work in telecommunications management, Internet of Things, cloud computing, smart city and other fields, and has achieved fruitful results. By participating in the development of international standards, we have kept abreast of the latest developments in technology and standards in the world, and have also enhanced the company's visibility in the industry.
On this basis, Datang Software has also successfully launched a number of products and solutions based on cloud computing and big data technology, and has been promoted in many industries such as telecommunications, highways, education, water conservancy, and smart communities. Application has achieved good economic and social benefits. In the future, Datang Software will continue to actively participate in international and domestic standardization work, and realize the two-wheel drive development model in which the company focuses on standardization and productization in new technology fields.
Die casting is the pressure of metal molds on a die casting machine and is the most productive casting process. Die-casting machines are divided into two categories: hot-chamber die-casting machines and cold-chamber die-casting machines. The hot chamber die casting machine has a high degree of automation, less material loss, and higher production efficiency than the cold chamber die casting machine. The aluminum alloy die castings that are widely used today can only be produced on cold chamber die casting machines due to their high melting point. The main feature of die casting is that the molten metal fills the cavity under high pressure and high speed, and is formed and solidified under high pressure. The air in the cavity is wrapped inside the casting to form subcutaneous pores, so aluminum alloy die castings should not be heat treated, and zinc alloy die castings should not be sprayed on the surface (but can be painted). Otherwise, the internal pores of the casting will expand due to thermal expansion and cause the casting to deform or bubble when the above-mentioned treatment is performed. In addition, the mechanical cutting allowance of die castings should also be smaller, generally around 0.5mm, which can not only reduce the weight of castings, reduce the amount of cutting to reduce costs, but also avoid penetrating the surface dense layer and exposing subcutaneous pores, causing The workpiece is scrapped.
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