COMPOSITION OF A BATH FOR SULFOCIATION OF PRODUCTS FROM STRUCTURAL AND TOOL STEELS Russian patent published in 2022 - IPC C23C8/52 C23C26/02 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of mechanical engineering, in particular to the chemical-thermal treatment of metals and alloys, and can be used for surface hardening of parts of machinery and equipment operating under friction at high contact loads and with a lack of lubrication. The composition of the bath for sulfocyanation of products made of structural and tool steels contains components in the following ratio, wt.%: (NH₂)₂CO - 30-32, Na₂CO₃ - 28-30, Na₂S - 2-5, sodium chloride NaCl - 6, calcium chloride CaCl₂ - 6, barium chloride BaCl₂ - 8, sodium hydroxide NaOH - the rest.

EFFECT: invention provides an increase in the rate of sulfocyanation and the ability to process parts of any size and shape, as well as an increase in the environmental safety of the sulfocyanation process.

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