2results about How to "Eliminate Stability Issues" patented technology

The embodiment of the present application provides a rolling mill flat head sleeve automatic adjusting device, and the design relates to the field of rolling mill production, and the device comprises a bracket body, upper and lower flat head sleeves which are evenly arranged on the bracket body, an adjusting assembly, a driving assembly, a pressure detection assembly and a PLC control system, the adjusting assembly is arranged on the bracket body and is connected with the upper and lower flat head sleeves, and the adjusting assembly is used for adjusting the acting force between the upper and lower flat head sleeves; the driving assembly is connected with the adjusting assembly; the pressure detection assembly is arranged at the connecting position of the adjusting assembly and the lower flat head sleeve, and is used for detecting the acting force between the upper and lower flat head sleeves; and the PLC control system is arranged on the bracket body and is electrically connected with the pressure detection assembly and the driving assembly at the same time. The present application can eliminate the influence of the change of roll gap caused by excessive vibration due to operation imbalance on the stability of rolling.

This invention relates to the field of N-(2,4-dinitrophenyl)-4-nitrobenzamide preparation technology, specifically to a green method for preparing nitramide compounds. The method involves adding a catalyst and dispersant to a reactor and mixing them uniformly. Then, a first and a second stream of materials are simultaneously added dropwise to the reactor for reaction. The temperature within the system is controlled during the dropwise addition. After the dropwise addition is complete, the temperature is increased to continue the reaction. After the reaction is completed, N-(2,4-dinitrophenyl)-4-nitrobenzamide is obtained through post-treatment. The first stream is a dispersion containing 4-nitro-N-phenylbenzamide, and the second stream is a nitrating agent consisting of a uniform mixture of N₂O₅ and nitric acid. This preparation method features high product conversion rate, a mild reaction process, safe and controllable production process, effectively reduces the amount of residual intermediates, and minimizes pollution.