- Immediate Post-Shutdown Cleaning (Core Procedure)
Warm Cleaning Treatment: Clean the die while it retains residual heat after shutdown (do not wait for full cooling). Use copper brushes and bamboo scrapers to remove residual materials from die holes. Never use steel scrapers or steel wool, as they will scratch the die holes and damage surface smoothness.
Full Orifice Purging: Clear each die hole one by one with fine copper wire or professional die pins to completely eliminate blockages and prevent material carbonization and hardening.
Rinsing & Wiping: Flush the die with food-grade clean water. For heavy oil stains, apply neutral food-safe detergent and rinse thoroughly. Ensure complete drying after cleaning. Avoid soaking the die in strong acid or alkaline solutions.
- Daily Operation Protection
Feeding Material Control: Sift raw materials in advance to prevent hard contaminants such as metals and gravel from entering the barrel, which can cause notch damage and orifice chipping on the die surface.
Stable Temperature Management: Operate strictly according to specified process temperatures. Avoid local overheating to prevent die deformation and material annealing softening.
Standardized Installation: Thoroughly clean the fitting surfaces before installation. Fasten bolts evenly to prevent die warping and material leakage caused by uneven stress distribution.
- Long-Term Storage Maintenance
Drying & Rust Prevention: After full cleaning and drying, apply a uniform layer of food-grade anti-rust oil or food equipment-specific edible oil to fully cover all die surfaces and inner orifices.
Classified Storage: Place the die independently on a dry shelf or in a dedicated storage box. Pad soft cloth between dies to avoid friction and collision damage. Do not stack heavy objects on top of dies.
Storage Environment Requirements: Keep the storage area ventilated and dry, away from humid conditions and acid-base corrosive environments.
- Periodic Inspection & Maintenance
Daily Visual Inspection: Check the die holes daily for wear, scratches, edge chipping and deformation. Polish minor burrs gently with oil stones in a timely manner.
Wear Assessment & Replacement: Arrange professional repair or immediate replacement if symptoms such as enlarged die holes, uneven discharging and defective finished products occur.
Regular Disassembly Maintenance: Disassemble the die assembly regularly to remove scale from sealing surfaces and diversion grooves, and inspect the integrity of all sealing parts.
- Troubleshooting & Strict Prohibitions
Hardened Blockage Handling: Soak the blocked die in warm water to soften hardened materials before unclogging. Never use open flame baking or brute force knocking.
Minor Rust Removal: Wipe off slight rust spots with a soft cloth dipped in edible oil. Return the die to the factory for professional polishing if severe rust occurs.
Strict Operating Prohibitions: Die hole repair by electric welding and forced grinding & cutting on working surfaces are strictly forbidden.