Recently, three draft national standards such as "large drum-shaped gear coupling", "SWZ-type integral bearing cross-axis universal coupling", and "large SWZ-type cross-axis universal coupling", The National Machinery Axis and Accessories Standardization Technical Committee reviewed and passed the 2011 meeting. It is understood that the formulation of the three draft national standards was participated by China’s No. 2 Heavy Machinery Group. The three draft national standards passed the review, fully embodying the technical advantages of the second-tier in this field, consolidating and enhancing the The popularity and right to speak have played a positive role in promoting the development of the company.
During the review meeting, the participating experts conducted serious and rigorous review of the three standard drafts from the standard format, specification series, structure type, technical parameters, etc., and considered that the standard drafting format for the second draft was advanced and the technical level was applicable, and the application form was approved for approval. The conditions of the manuscript created favorable conditions for the next standard approval.
China No.2 Heavy Machinery Group Corporation (formerly China No.2 Heavy Machinery Factory, hereinafter referred to as China Erzhong) is located in Deyang, a heavy industry city on the plain of western Sichuan. It is the largest heavy machinery manufacturing enterprise in the People's Republic of China and a major technical equipment localization base. It is an important backbone enterprise that relates the lifeline of the national economy and national security. The company was founded in 1958, completed and put into production in 1971, covers an area of ​​2.611 million square meters, currently has 8 production plants, 3 wholly-owned subsidiaries, 6 holding subsidiaries, total assets of nearly 18.8 billion yuan (as of 2009 December 31st of this year, there were 12,906 employees.
The working principle of a reaction kettle is to place a reaction solvent in the inner layer for stirring reaction, and the interlayer can be connected to different cold and heat sources (frozen liquid, hot water or hot oil) for circulating heating or cooling reaction. Inject a constant temperature (high or low temperature) hot melt medium or cooling medium through the interlayer of the reactor to heat or cool the materials inside the reactor at a constant temperature. At the same time, stirring reactions can be carried out under normal or negative pressure conditions according to usage requirements. The material reacts in the reactor and can control the evaporation and reflux of the reaction solution. After the reaction is completed, the material can be discharged from the discharge port at the bottom of the reactor, making the operation extremely convenient.
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