with the development of lightweight tyres, the market sets increasingly higher requirements for steel cord strength. the research on steel wire toughness involves the core technology of steel cord production, and it is mainly conducted through the rod alloying technology, the heat treatment technology, and the cold-drawing deep processing deformation technology. to facilitate the company’s layout in the market of ultra-high-strength steel cord products, the station has started with the research subject of heat treatment and used the small heat treatment furnace introduced to the company to carry out relevant experimental research and improve its competitiveness in the heat treatment technology for high-carbon wires.