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发明公开
CN106480363A 30CrMnSiNi2A钢用激光熔覆粉末及制备方法 有权

30CrMnSiNi2A钢用激光熔覆粉末及制备方法
摘要：
本发明涉及30CrMnSiNi2A钢用激光熔覆粉末及制备方法，所述激光熔覆粉末中各组分的量按重量百分比为Cr0.8％-1.0％，Mn0.75％-1.10％，Si0.65％-1.10％，Ni2.0％-3.2％，C0.16％-0.22％，Cu0.15％-0.20％，P0.015％-0.020％，S0.01％-0.015％，稀土0.001％-0.015％，余量为铁。本发明进一步提出熔覆粉末的制备方法，激光熔覆粉末专用于30CrMnSiNi2A钢的激光熔覆技术中，保证熔覆界面优异的结合强度、较低的冶金缺陷和降低的稀释率，且提高了熔覆层的韧性，改了熔覆粉的润湿性，抑制熔覆层开裂并延缓裂纹扩展速率。
摘要（英）：

The invention relates to laser cladding powder for 30CrMnSiNi2A steel and a preparation method. The laser cladding powder is prepared from the following components in weight percent: 0.8% to 1.0% of Cr, 0.75% to 1.10% of Mn, 0.65% to 1.10% of Si, 2.0% to 3.2% of Ni, 0.16% to 0.22% of C, 0.15% to 0.20% of Cu, 0.015% to 0.020% of P, 0.01% to 0.015% of S, 0.001% to 0.015% of rare earth and the balance of Fe. The invention further provides the preparation method of the laser cladding powder, the laser cladding powder is exclusively used in a laser cladding technique of the 30CrMnSiNi2A steel, excellent bonding strength and low metallurgical defects and dilution rate of a cladding interface are guaranteed, the toughness of a cladding layer is increased, the wettability of the cladding powder is improved, the cracking of the cladding layer is inhibited, and the crack growth rate is reduced.

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