Technology for welding working cylinder opening of cold isostatic press

The invention provides a technology for welding a working cylinder opening of a cold isostatic press. The technology adopts the following steps: A, at first, cleaning all the parts of the welding surface of the working cylinder opening cleanly, and cleaning the metal surface of a specific welding position of the cylinder opening without leaving any impurity; B, heating to 200-250 DEG C locally and quickly, carrying out thermal insulation for 5-7 minutes, welding and using a hammering method to eliminate the internal stress during the welding process; C, heating to 400-450 DEG C after welding, carrying out thermal insulation for 2-5 minutes, cooling slowly and cooling at a speed of 20-30 DEG C/hour; and D, after cooling, using a tool grinder to grind the surface, and ensuring the coaxiality and roughness. After the treatment of the technology for welding, the performances of original equipment can be maintained, the cold isostatic press is prevented from being wholly scrapped due to cylinder opening abrasion o