Cleaning process for internal passages of superalloy airfoils
    2.
    发明授权
    Cleaning process for internal passages of superalloy airfoils 失效
    超级合金翼型件内部通道清​​洗工艺

    公开(公告)号:US4439241A

    公开(公告)日:1984-03-27

    申请号:US353764

    申请日:1982-03-01

    摘要: Residues accumulated during use are removed from the small interior cavities of superalloy airfoils by a process which includes exposing the interior of the part to an aqueous solution of 20-45% potassium hydroxide at a pressure of 10.4-24 kPa (150-350 psi) and temperature of 150.degree.-235.degree. C. (300.degree.-450.degree. F.) for about 20 hours, followed by water blasting using a pressure greater than about 14 MPa (2,000 psi). Unless the part is kept continuously wet between the first and second steps, the second step will not be effective.

    摘要翻译: 在使用过程中累积的残余物通过包括在10.4-24kPa(150-350psi)的压力下将该部件的内部暴露于20-45%氢氧化钾的水溶液的方法从小型内部空腔中除去, 温度为150°-235℃(300°-450°F)约20小时,然后用大于约14MPa(2,000psi)的压力喷水。 除非第一和第二步骤之间的部分保持连续湿润,否则第二步将无效。