Combined with material characteristics of metal bipolar plates (stainless steel/nickel‑plated) and graphite bipolar plates, Sinobakr provides mature cleaning solutions for hydrogen fuel cell bipolar plates based on modified alcohol eco‑friendly cleaning and ultrasonic‑vacuum cleaning processes. The solutions remove stamping oil, cutting fluid, dust and micro‑impurities, improve surface cleanliness without residues, and match subsequent welding, coating and sealing processes.

1. Modified Alcohol Vacuum Ultrasonic Cleaning Solution (Main Eco‑friendly Type)

Application: Stainless steel bipolar plates, ultra‑thin stamped parts, bipolar plates with precision flow channelsCore Equipment: Sinobakr modified alcohol cleaning machine integrating ultrasonic cleaning, vacuum degassing cleaning and vacuum dryingProcess Flow: Loading → Vacuum ultrasonic rough cleaning (modified alcohol solvent to remove stamping oil & drawing oil) → Vacuum ultrasonic fine cleaning → Vacuum spray rinsing → Vacuum hot air dryingAdvantages:

• Vacuum cleaning enables solvent penetration into micro‑holes of flow channels, meeting VDA19 / ISO16232 cleanliness standards

• Recyclable eco‑friendly modified alcohol, no water stains, oxidation or residues

• Vacuum drying eliminates water marks, suitable for subsequent electroplating, coating and sealant bonding

2. Hydrocarbon Solvent Vacuum Cleaning Solution (Ultra‑high Cleanliness Type)

Application: High‑end graphite bipolar plates, coated bipolar plates requiring extreme surface cleanlinessEquipment: Sinobakr hydrocarbon vacuum ultrasonic cleaning machineProcess: Vacuum ultrasonic degreasing → Vapor rinsing → Vacuum closed dryingFeatures: Low volatility, explosion‑proof, ideal for clean workshops in hydrogen energy industry