TH72740B - Hot rolling method of high carbon steel - Google Patents

Abstract

The current invention provides for a method of hot rolling. (hot-rolling) that can prevent cracking of steel plate not to occur in the cooling process after the finished rolling process when It is hot rolled to high carbon steel. Method for hot rolling of high carbon steel in which billets make plates of high carbon steel is heated by a sheet bar heater located on the The entrance side of the pre-rolling machine and then the pre-rolling is done to the sheet steel billet. by using a successful ironing machine The method consists in heating the billet with a heater. sheet to make the amount of temperature rise at the end of the billet equal to or less than the predefined upper limit value, where "the amount of increase in temperature at the footer end of sheet billet" means the difference in temperature at the end of the billet during Finally, before entering the finishing press during the case of heating with a heater. Billet making plates and the absence of heating with billet making plate heaters.

Claims (1)

Disclaimer (all) which will not appear on the advertisement page: Amendment 21/11/2019 Claims None -------------------------------------------------- -------------------------------------------------- Edit 30/11/2018 1. Method of hot rolling (hot-coling) high carbon steel (high-ecartbon steel) where the billet is made through (sheet bar) of high carbon steel is heated by using a heater, a billet made of sheets (Sheet bar heater) located on the entrance of the machine. Finished ironing and then finished ironing It was then acted on the billet, made through the use of a finishing press. Heat with a billet heater to make the exit temperature of the heating furnace. Was set at 1060 degrees Celsius to 1150 degrees Celsius, and the amount of temperature increases at The end of the billet is equal to or less than the predetermined upper limit, where the "end of the billet" represents the position between the end edge of the billet. And 3 m from the end edge and "the amount of increase in temperature at the end of the "Sheet billet" refers to the difference in temperature at the end of the indentation of the billet at the end. Before it enters the finished press during the case of billet heater heating This is done in cases where there is no heating with a billet heater. -------------------------------------------------- - 1.Hot rolling method (hot-rolling) high-carbon steel in which the sheet bar of the high carbon steel is heated using a sheet bar heater located. On the entrance side of the finished pressing machine and then the finished ironing It was then acted on the billet to make the sheet by using a finished rolling machine. This method consists of giving Heated with billet heaters to make plates to make the volume increase in temperature at the tip. The end of the billet is equal to or less than the predetermined upper limit, where "the amount of increase in temperature at the end of the billet" represents the difference in temperature. At the end of the billet, sheets are made at the last stage before entering the finished rolling machine during the case. Where there is heating with billet heaters, making plates, and in the absence of heating with Billet heating plate making machine