WebWe would like to show you a description here but the site won’t allow us. WebFeb 8, 2024 · Controlled-rolling involves deformation at much lower finish rolling temperatures than hot rolling, normally in the range from 705 deg C to 815 deg C. In contrast, a normal hot-rolling practice takes advantage of the better hot workability of the material at higher temperatures. Hot-rolled plates are finished as quickly as possible, …

Dry sliding wear behaviour of hot-rolled air-cooled medium …

WebMay 1, 2011 · The steels were rolled at 3 different finishing temperatures. The mechanical properties were tested by tensile tests. The results show that as finish rolling temperature decreases from 620 to 560 °C in ferrite region, the deep drawability of ferritic-rolled P-added high strength IF steels is improved, and r value rises from 1.14 to 1.37. Finish rolling … Webfinish rolling temperature was 950˚C (Fig. 1(a)). The ferrite grain sizes of specimen 1 and 3 are 36.12μm and 38.47 μm, respectively. And the ferrite grains are coarse, despite it is difficult to measure the ferrite grain sizes of specimens at the finish rolling temperature of 900˚C and 800˚C for the presence of pearlite and widmanstätten. changan rts microfinance bank address

Temperature Prediction for Finish Entry of Hot Strip Mill …

WebMay 1, 2016 · During hot rolling, thickness of slab was reduced from 200 mm to ~38 mm in 5 roughing-passes. Temperature at the end of roughing (R 5 Temp.), finish rolling temperature (FRT) and coiling temperature (CT) varied in the range of 1016 – 1054°C, 834- 917°C, and 538– 679°C respectively. Samples were drawn from HR coils of two … WebThe final hot working may continue down to temperatures below the Ar 3 critical temperature (transformation from austenite to ferrite). This requires heavy rolling equipment capable of deforming the steel at low hot … WebIf the finish rolling temperature drops further, to below 723°C, the equilibrium diagram shows that the structure should be a mixture of ferrite and pearlite. Rolling in this range is usually restricted to low carbon steels containing less than 0,15%C because the presence of pearlite makes rolling difficult. hard drive data recovery hardware