source：http://en.zzdsyc.com/news370405.html │ Publication time：2019-4-8 9:10:00
positive mould powder is a multi-functional metallurgical auxiliary material used in the process of continuous casting production and operation. It is a high-tech auxiliary material. It can be produced smoothly in the continuous casting process and cast billet. In the process of improving the quality, the powder plays a very important role. Whether the function of the powder is exerted or not, besides its own performance, is closely related to its use mode. Even if the quality of the powder is good and the use method of the powder is incorrect, it will also directly affect the performance of the powder. In the use and management of the powder, attention should be paid to the thickness of the powder: the powder should be added more frequently, less and evenly. Additionally, control the appropriate thickness of the flux, so that the powder has good thermal insulation effect, and the characteristic of the flux is the uniform melting of the liquid slag.
You may want to know about the different risers with different feeding functions of :
risers, which have different forms, sizes and opening positions. Therefore, the design of the risers takes into account the properties of casting alloys and the characteristics of castings. In solidification process, the main function of riser is to discharge the gas in the cavity and collect the liquid metal mixed with inclusions or oxide film at the front of the liquid flow to reduce the defects of castings. The riser is mostly located opposite to the inner gate, and its size is not too large. It is necessary to control the microstructure. In castings, the riser can collect the cooled metal liquid at the front of the liquid flow, which is characteristic of avoiding the main function of the riser heating agent in Zhengzhou, and avoiding the occurrence of supercooling structure on the castings. Fig. 2 is a single cast piston ring. A small riser is set opposite the inner gate to collect cold metal. There will be no white structure at this place due to the supercooling of the metal, leading to the scrap of the castings. The size and location of such risers,should be determined according to the microstructural requirements of the castings. If this "Characteristic of Molding Flux" prepared for you by Zhengzhou Dongsheng Metallurgical New Materials Co., Ltd. is helpful, I hope to collect it. If there are any shortcomings, I hope you can point out them to us, so that we can make more progress. Eight hundred and eighty-eight thousand one hundred and eleven