TH43009A - Rolling and tamping methods for steel sheets and tamping rollers. - Google Patents

Abstract

DC60 This invention provides a tempering method for tempering steel plate to improve its brightness without requiring additional equipment and manufacturing steps. The method uses steel plate of 0.012 wt% or less of carbon (C) and a tempering mill where at least the roller on the top front stand is a scratch bright roll with a surface roughness (Ra) of 1.2 microns or less, and at least the roller on the last stand is a bright roll with a surface roughness (Ra) of 0.5 microns or less. This invention provides a tempering method for tempering steel plate to improve its brightness. Without the need for increased equipment and production steps, the method utilizes steel plates with 0.012 wt% or less of carbon (C) and a temper rolling mill where at least the roller at the top front stand is a scratch bright roll with a surface roughness (Ra) of 1.2 µm or less, and at least the roller at the last stand is a bright roll with a surface roughness (Ra) of 0.5 µm or less.

Claims (10)

1. Temper rolling method for tempering steel sheets. The bold use of a temper rolling mill, which was set up with a certain number of... Many roll stands have at least one roller at the top front of the stand. A scratch bright roll with a surface roughness (Ra) of 1.2. um or less, and at the very least, the roller on the last stand is a polishing roller with a rough texture. Surface finish (Ra) of 0.5 µm or less, in a manner where the pressing is done dry, and in... Characterized by the steel plate having 0.012 wt% or less of carbon (C). 2. The temper rolling method as per claim 1, whereby... The tempering rolling mill is a two-legged rolling mill. (stand mill) 3. The temper rolling method as per claim 1. 2. Where the steel plate contains from 0.001 to 0.008 wt% of carbon. 4. Temper rolling method as per claims 1 and 2. Or 3. Where the steel plate has an increased amount of titanium (Ti) from 0.005 to 0.2 wt%. And/or from 0.002 to 0.1 Wt% of biobium (Nb). 5. The temper rolling method, as per any of the claims. Under the aforementioned claims, the steel sheet contains no more than 0.15 wt% aluminum. (Al), not more than 0.2 wt% of silicon (Si), 0.1 to 0.5 wt% of manganese. (Mn), not more than 0.05 wt% of phosphorus (P), and not more than 0.03 wt% of Sulfur (S) 6. Temper rolling mill for steel sheets. Many roller stands have at least one roller on the top front stand that is a scratching roller. A scratch bright roll with a surface roughness (Ra) of 1.2 µm or less. Moreover, in a way that at least the roller on the last stand is a bright roll. Having a surface roughness (Ra) between 0.15 and 0.3 µm. 7. Temper rolling mill as per claim 6. This is a two-stand mill. 8. Temper rolling mill as per claim 6. Or 7. Where the scratch bright roll of the front stand has... The surface roughness must be at least 0.20 µm. 9. Temper rolling mill as per claim 8. Where the scratch-bright roll on the front stand is located, it has a rough texture. Surface thickness 0.5 to 1.0 µm 10. Under which claim is a temper rolling mill applicable? One of the claims in Articles 5 through 9, whereby the polishing roller of the last stand is a polishing roller. Mirror bright roll or scratch bright roll. (roll)