| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention concerns engineering industry and can be applied in aircraft and power-producing turbine manufacturing for turbine blade repair. Method involves preliminary scale removal from parts, pickling treatment in solution and further removal of products of reaction between solution and coating elements. Electrolyte of the following composition, in wt %, is used as pickling solution: nitric acid 20-25, chlorine acid 4-6, potassium bichromate 9.6-11.6, ammonium molybdate 2.0-2.2, the rest is water. The process is performed at solution temperature under 20°C till total removal of heat-resistant coating. ^ EFFECT: improved yield of heat-resistant coating removal process, including diffusion zone, using pickling solution consisting of efficiently utilizable components, reduced power consumption of process. ^ 1 tbl, 1 ex |
