Efficient continuous water atomizing process for producing steel powder

Abstract

The invention relates to an efficient continuous water atomizing process for producing steel powder. The process includes: continuously injecting molten steel into an intermediate thermal insulation heating device, continuously adjusting components and temperatures, continuously providing temperature signals to a control system by a temperature measuring device during atomizing, and controlling tundish temperature to be at 1550-1580 DEG C; by a weighing system located on the tank support base of the large tank of the intermediate thermal insulation heating device. continuously displaying the weight of the residual molten steel in the large tank to guarantee that the weight of the residual molten steel in the large tank is not less than 5 tons. Compared with the prior art, the efficient continuous water atomizing process has the advantages that two magnetic separation drying production lines are used, two working high-pressure pump and a backup high-pressure pump are equipped, and continuous steel powder water atomizing is achieved; atomizing temperature is fed back and controlled through real-time temperature measuring, and the physical and chemical performance of base powder is allowed to be even and consistent; reasonable nozzle size, draining hole diameter and atomizing pressure are used, tapping temperature is lowered, atomizing efficiency is increased, and base powder quality is increased.

Description

technical field [0001] The invention relates to a water atomization process in the field of powder metallurgy, in particular to a high-efficiency continuous water atomization process for producing iron and steel powder. Background technique [0002] Water atomization process technology is a common technology in the field of powder metallurgy to realize industrial production. The method is to use high-pressure atomized water to beat the high-temperature molten steel into extremely fine powder through a special nozzle, and then pass through magnetic separation, dehydration, Drying, reduction, crushing, screening, batching, packaging, and industrial production methods for producing steel powder. [0003] High-quality water-atomized iron powder-based powder with uniform performance is the prerequisite for the production of high-quality powder metallurgy parts. The characteristics of the raw material powder determine the properties of the finished iron powder for pressing and si...

AI Technical Summary

Problems solved by technology

[0004] At present, the common problems in the domestic water atomization process are: in order to successfully complete the water atomization process, the molten steel must have a high superheat, and the atomization temperature changes continuously from high to low during the atomization process, resulting in loose density and particle size. The distribution fluctuates (the difference between the beginning and the end) is relatively large

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