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1. CN102834529 - Directional electromagnetic steel plate and method for manufacturing same

官庁 中華人民共和国
出願番号 201180017618.3
出願日 29.03.2011
公開番号 102834529
公開日 19.12.2012
特許番号 102834529
特許付与日
公報種別 A
CPC
B23K 26/0006
B23K 26/364
B23K 26/40
C21D 8/1294
C21D 2201/05
B23K 26/354
出願人 Nippon Steel Corp.
発明者 Sakai Tatsuhiko
Hamamura Hideyuki
代理人 wang linggu bai li
発明の名称
(EN) Directional electromagnetic steel plate and method for manufacturing same
(ZH) 方向性电磁钢板及其制造方法
要約
(EN)
In a method for manufacturing a directional electromagnetic steel plate, grooves which extend in directions including a direction perpendicular to the conveying direction of the directional electromagnetic steel plate and have a predetermined length are formed at predetermined intervals in the conveying direction by applying a laser beam to the surface of the directional electromagnetic steel plate while scanning the laser beam over the surface thereof. Further, in the method for manufacturing the directional electromagnetic steel plate, the laser beam is a continuous-wave laser beam with a laser wavelength (?) of 1.0-2.1 [mu]m inclusive, the power density (Pd) [W/mm2] obtained by dividing the laser beam intensity (P) by the focused beam area (S) is 5105 W/mm2 or more, and the power density (Pd) [W/mm2] and the scan speed (V) [mm/s] of the focused spot of the laser beam on the surface of the directional electromagnetic steel plate satisfy 0.005Pd+3000=V=0.005Pd+40000.

(ZH)

本发明的方向性电磁钢板的制造方法中,通过对方向性电磁钢板的表面边扫描边照射激光束,从而沿搬送方向以规定的间隔形成沿包括与上述方向性电磁钢板的搬送方向垂直的方向在内的方向连续存在的规定长度的槽。此外,所述方向性电磁钢板的制造方法中,所述激光束是激光波长λ为1.0μm以上且2.1μm以下的连续波激光束,将激光束强度P除以聚光束面积S而得到的功率密度Pd[W/mm2]为5×105W/mm2以上,所述功率密度Pd[W/mm2]与所述方向性电磁钢板的表面上的所述激光束的聚光点的扫描速度V[mm/s]满足0.005×Pd+3000≤V≤0.005×Pd+40000。

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