Knowledge

1. Incomplete or Forged Material Certification Documents Some manufacturers fail to provide complete Material Certificates (MTCs) or third-party testing reports, especially for cri

1. Define Operating Requirements and Select Suitable Materials Ordinary Material Drying: Tube bundles should use high-quality boiler steel tubes (GB3087) with good heat transfer an

1. Verify Material Certification Documents Tube Material: High-quality boiler steel tubes (e.g., GB3087 standard) with good high-temperature resistance, pressure resistance, and he

1. Examine the Material and Structure of Core Components Tube Bundle Material: High-quality equipment uses premium boiler steel tubes (e.g., GB3087), possessing excellent pressure

1. Preparation and Surface Treatment Before Repair Shutdown and Evacuation: Close the feed valve and thoroughly empty the hydrocyclone to remove residual starch slurry and prevent

1. The main body must be made of 304 or 316 stainless steel. The parts in contact with the material (cylindrical section, conical section, inlet and outlet) should be made of 304 o

1. Verify Material Certification Documents Request the supplier to provide a stainless steel material report (e.g., SGS testing) to confirm that the main body is made of 304 or 316

1. Increased risk of corrosion and leakage: Using non-standard stainless steel (such as 201 stainless steel masquerading as 304/316) makes the material highly susceptible to pittin

1. Not in Use: Immediate Replacement or Return If the equipment is not yet installed or is in the acceptance phase, refuse to sign for it and require the supplier to replace it wit

1. Increased risk of corrosion and leakage: Using non-standard stainless steel (such as 201 stainless steel masquerading as 304/316) can easily lead to pitting and intergranular co

1. The main body material should meet national standards. Stainless steel parts (cylindrical section, conical section, inlet/outlet): Must be made of 304 or 316 stainless steel, an

I. Initial Operation After Repair: Smooth Transition, Avoid Shock Repaired areas (such as coatings or new parts) require a short adaptation period. A gradual start-up strategy shou