风洞喷管内壁(以下简称喷管)是风洞的关键部件之一。它要求内表面有高的尺寸精度与表面光洁度,通常用机加工组合或整体电铸的方法制造。这两种加工方法相比,整体电铸法具有内表面尺寸精度高、表面光洁度好、没有连接缝等优点,从而可以得到高质量的气体流,喷管的纵向温度梯度也小。据报导 Wind tunnel nozzle wall (hereinafter referred to as nozzle) is one of the key components of the wind tunnel. It requires high dimensional accuracy and surface finish on the inner surface, usually machined or machined electroformed. Compared with the two processing methods, the overall electroforming method has the advantages of high inner surface dimension accuracy, good surface finish and no connecting seam, so that a high-quality gas flow can be obtained, and the nozzle longitudinal temperature gradient is also small. It is reported