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Repair Technology of Stainless Steel Reactor after Breakage (Part II)


Release time:

2019-07-25

② Select PTFE material for corrosion-resistant plate fixation, suitable for large damaged surface parts. The specific repair method is to select a 2mm ~ 3mm thick PTFE plate larger than the damaged area according to the damaged area. Use a Φ6mm/Φ7mm drill bit to determine the location and quantity of holes around the damaged area, use M8 tap to tap, then clean the damaged surface and scrub with cleaning agent (ethanol), and then hang the glue. In order to ensure the sealing of the periphery, the PTFE rope is pressed into the glue, the PTFE plate is tightened and then loosened with tantalum nails, the glue is hung under each nail cap, and the PTFE rope is wound and then screwed one by one until the glue is extruded around the repair. (4) Rivet

② Select PTFE material for corrosion-resistant plate fixation, suitable for large damaged surface parts. The specific repair method is to select a 2mm ~ 3mm thick PTFE plate larger than the damaged area according to the damaged area. Use a Φ6mm/Φ7mm drill bit to determine the location and quantity of holes around the damaged area, use M8 tap to tap, then clean the damaged surface and scrub with cleaning agent (ethanol), and then hang the glue. In order to ensure the sealing of the periphery, the PTFE rope is pressed into the glue, the PTFE plate is tightened and then loosened with tantalum nails, the glue is hung under each nail cap, and the PTFE rope is wound and then screwed one by one until the glue is extruded around the repair.

(4) rivet fixing method. Mainly suitable for irregular round and 55mm diameter, not perforatedStainless steel reaction kettle. The specific operation steps are:

① Grind the damaged surface and clean it.

② Use Φ3mm drill bit to drill a hole depth of about 8mm at the damaged point.

③ Use the reaming grinding head to expand the inner wall of the hole out of the cross-sectional groove.

④ According to the actual depth of the drilling and the thickness of the tantalum plate, cut the Φ3mm tantalum strip into a section that is about 2mm ~ 3mm longer than the total length of the hole.

⑤ Cut the tantalum plate into a plate about Φ5mm larger than the damaged surface, determine the center position and drill holes.

⑥ Hang glue and PTFE soft tape evenly on the damaged surface (not thick), press the cut tantalum plate on it, insert tantalum strips into the holes, gently hit the tantalum plate with a special small hammer, and then hit the tantalum strips. As the tantalum strips are expanded and fixed in the holes, the exposed tantalum strips are piled up to fix the tantalum plates.

(5) clip repair method. Suitable for corrosion perforated unjacketed glass lined storage tanks. The specific operation steps are to hang glue on the polished and cleaned damaged surface in the tank, press directly on the damaged surface with 2mm ~ 3mm thick PTFE plate with drilled holes as sealing material, then pass tantalum screws through the corrosion holes, and tighten the outside with screws and pads at one time.

All the above repair methods must use repair glue, so the use of glue must refer"Instructions for Use". patched upStainless steel reaction kettleIt is necessary to ensure that the glue is solidified before it can be used, otherwise even if it is used, the effective use time will not be too long, and even the damaged area will be further expanded. Use the patchedStainless steel reaction kettleEvery time there is no material in the equipment, air replacement shall be carried out first, and special personnel shall be assigned to enter the equipment after passing the inspection by the oxygen detector. Some enterprises in order to increase production in a short period of time to ignore the inspection, resulting in equipment can not be repaired and scrapped. Used after this repairStainless steel reaction kettleMust check, do a good job of repair, inspection records.