Long-distance Localization of 4Cr13 Stainless Ball-pocket in Radiative Region

Radiation caused by high-energy particles would speed up the damage of accelerator equipment. The high residual radiation from equipment affects staff health as well. Intelligent robots receive various limits to replace human in completing complex and time-consuming maintenance in radiative region because of high sensitivity to radiation. The 4Cr13 stainless ball-pocket was designed in the study of localization in long distance with the advantages of the conical fit technology. Moreover, the 4Cr13 stainless ball-pocket and bearing ball combine and form a locating structure, which has good performance on automatic aligning, self-locking and rapid dismantling. The comprehensive mechanical properties of 4Cr13 stainless ball-pocket were studied and optimized based on three heat treatment methods of martensite steel containing chromium alloy. The study of machining conditions states that compared with the design accuracy of localization, the machining error retains definite allowance. The 4Cr13 stainless ball-pocket successfully exhibits sufficient supporting strength, wearing reducing and radiation resistance. This study shows that 4Cr13 stainless ball-pocket has better fitting precision than 0.2 mm in practice. This study could offer a reliable strategy and measure for long-distance localization in other dangerous regions.