We study the process of high-pressure water spraying of powders of austenitic stainless steels in a small-scale installation with a furnace capacity of 25 kg. The technological characteristics of the obtained powders are analyzed depending on the conditions of spraying. It is shown that, as the ratio of the amounts of high-pressure water and sprayed metal melt increases, the shapes of formed particles change from rounded and even spherical to irregular and spongy with highly developed surfaces. This effect is explained by an increase in the rate of cooling of formed particles, which prevents the possibility of their spheroidization in the course of motion from the focus of spraying to the level of cooling water in the chamber. Hence, by changing the ratio of the amounts of high-pressure water to the amount of the melt, we can get high-quality powders of prescribed shapes. These powders can be used in various fields of the contemporary industry.

中文翻译：

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高压喷水工艺参数对不锈钢粉末形貌影响的研究

我们研究了在炉容量为 25 kg 的小型装置中对奥氏体不锈钢粉末进行高压喷水的过程。根据喷涂条件分析所得粉末的工艺特性。结果表明，随着高压水与金属熔体喷射量之比的增加，所形成的颗粒形状由圆形甚至球形变为不规则海绵状，表面高度发达。这种效应是由形成的颗粒冷却速率的增加来解释的，这防止了它们在从喷射焦点到腔室中冷却水水位的运动过程中球化的可能性。因此，通过改变高压水量与熔体量的比例，我们可以获得规定形状的高质量粉末。这些粉末可用于当代工业的各个领域。