Next, excess penetrant should be removed from the surface. Uniform removal of excess penetrant is necessary for effective inspection, but overcleaning must be avoided.

• 清除过多的渗透剂：接下来，过多的渗透剂应该从表面清理掉。为了有效的检测，均匀的去除过多的渗透剂是必须的，但应避免过清洗。