source：http://en.zzdsyc.com/news370388.html │ Publication time：2019-3-25 9:07:00
has its unique advantages. It is packed in the same container with food. The deoxidizer absorbs oxygen in the container, so that the container is anaerobic and the food can be preserved. But the raw materials of deoxidizer must react. It is stable, odorless and has no harmful gases. In case of eating by mistake, it is harmless to human body. Deoxidizers are generally used as basic materials in general food, which can maintain food quality and prolong shelf life. They can prevent oil oxidation, fade and maintain nutrients in healthy food. Deoxidizers have been widely used in wet bread flour, wet noodles and wet vermicelli abroad. In recent years, with the development of food industry and the improvement of packaging materials, deoxidizers have been paid more and more attention in China, and the characteristics of deoxidizers are more and more widely used.
may be of interest to you. In this paper, the feeder of
riser has different feeding function, its form, size and opening position are different. Therefore, the design of riser should consider the properties of casting alloy and the characteristics of castings. For alloys with small volume shrinkage (such as gray cast iron) or alloys without centralized shrinkage (such as tin bronze) during solidification, the main function of riser is to discharge gas from the mould cavity. For castings requiring control of microstructures, risers can collect liquid metal cooled at the front of the liquid flow to avoid supercooled structure on the castings. Figure 2 is a piston ring cast by a single body. The riser is located opposite to the inner gate, and the size of the riser is not too large. For castings requiring control of microstructures, the riser can collect liquid metal cooled at the front of the liquid flow to avoid supercooled structure on the castings. If a small riser is used to collect cold metals, there will be no white structure due to the supercooling of the metal, which will lead to the scrap characteristics of the castings. The size and location of the riser, such as the supply function of riser heater, should be determined according to the microstructural requirements of the castings."Characteristics of deoxidizer" and another article from a Compound Deoxidizer manufacturer will provide some help to you. We will provide some help in this article. Follow-up elaborate preparation of more about Zhengzhou Dongsheng Metallurgical New Materials Co., Ltd. content, if you do not want to miss, we suggest collecting our website! Eight hundred and eighty-eight thousand one hundred and eleven