The stainless steel autoclave shell of Shanghai has local corrosion, which can be repaired by arc surfacing. If the local corrosion area of the reactor shell is large, it will be repaired by the patch method. If the crack depth is less than 10% of the wall thickness of the reactor and not more than 1 mm, the grinding wheel can be used to smooth the crack and smoothly transition to the metal surface. If the crack depth does not exceed 40% of the wall thickness of the reactor, the groove can be scraped out in the crack depth range, and the welding can be performed, but the cracks should be drilled at both ends of the crack to prevent crack propagation.
Shanghai stainless steel autoclave is used for a certain period of time, and one of the following conditions should be replaced:
The wall thickness of Shanghai stainless steel high-pressure reactor is uniformly corroded. It should be replaced when the design value is small. The wall thickness of the reactor body is severely corroded. When the design exceeds the specified value, and the corrosion area of the body wall is greater than 20% of the total area. Should be replaced in the hydraulic test, Shanghai stainless steel high pressure reactor has obvious deformation exceeding the specified value, should be replaced when the kettle body or weld cracks can not be repaired, should be replaced, the surface damage area exceeds 15% or damaged parts If it cannot be repaired, serious structural defects should be replaced, which endangers safe operation, unqualified welds, severely incomplete penetration, cracks, etc., and should be replaced.
In the long-term use of Shanghai stainless steel high-pressure reactor, it is inevitable that there will be some dirt. In order to avoid the adverse effects of these dirt on the equipment, we need to properly clean it, then clean the equipment. What are the requirements in the process?
1. Before the tank is cleaned, according to the storage type, type and quantity of Shanghai stainless steel high pressure reactor, a practical and feasible cleaning plan will be formulated.
2. When the storage tank is ready for cleaning, all the flammable gas and flammable, explosive and toxic gases should be discharged.
3, cleaning flammable, explosive, toxic dangerous chemicals Shanghai stainless steel high-pressure reactor used in hand tools should be non-sparking safety tools and cotton cleaning tools.
4. When the Shanghai stainless steel high pressure reactor is emptied, it should be repeatedly injected with water, and the remaining material in the tank should be exhausted as much as possible.
5. When the machine is ventilated, the electrician is responsible for installing the temporary fan for mechanical ventilation.