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目前,上海探伤机厂生产的射线探伤用塑料暗盒在使用中尚存有一定的不足之处,在此提出一点改进意见,供制造单位研究参考。1.塑料暗盒面装铅字小袋的改进现使用的塑料暗盒装铅字小袋处采用了双层结构,较最初暗盒提高了一步,防止了因长期使用造成暗盒漏光的弊病,但由于小袋的长度太长,铅字装入后换字时取出较难,因而影响工作进度建议改为较短的小袋。2.建议在暗盒面上标出中心标记现用暗盒全部是黑色的,在实际使用时,校对中心较难,尤其在光线较暗的容器内部工作时更加费力,
At present, there are still some shortcomings in the use of the plastic film box for ray tracing manufactured by Shanghai Flaw Detector Factory, and a little improvement suggestions are put forward here for the study and reference of the manufacturing units. 1. Improvement of the plastic pouch surface mounted pouch The plastic pouch pouch used nowadays has a double-layer structure at the front of the original pouch, which is one step higher than the original one to avoid the light leakage caused by the long-term use of the pouch. However, Long, type characters when loaded after the more difficult to remove, thus affecting the progress of the proposed change to a shorter pouch. 2. It is recommended that the center mark on the cassette surface is marked with a black cartridge. In actual use, the calibration center is more difficult, especially when working inside darker light containers.