Influence of skin-rolling on the structure and properties of hot-rolled sheet steel for cold stamping
DOI:
https://doi.org/10.34185/1562-9945-5-136-2021-05Keywords:
дресування, гаряча прокатка, розмір зерна, механічні властивості, холодна штамповка, відпал, старінняAbstract
We investigated the influence of skin-rolling on the structure and properties of hot-rolled steel strips and sheets for cold stamping. It has been established that skin-rolling of rolled steel made of 08кп steel and annealing at a temperature of 600-800°C provides the formation of properties and microstructure in accordance with ГОСТ 4041–2017.
It was found that to obtain the required combination of mechanical properties and microstructure in hot-rolled plate made of low-carbon boiling steel, it is necessary that the total degree of deformation before annealing exceeds the critical one.
Conclusion. We investigated the influence of tempering on the structure and mechanical properties of hot-rolled sheet steel. It has been established that in order to increase the ductility of hot-rolled strips and ensure the level of mechanical properties of the metal and structure in accordance with ГОСТ 4041–2017, it is advisable to skin-rolling stempering parameters to obtain high-quality sheet steel for cold stamping.
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