Construction Case Study: [Heat Exchanger Tube Sheet Corrosion Repair] Introduction of Repair Examples
Ceramic R Metal (Belzona 1311) Ceramic S Metal (Belzona 1321)
Ceramic R Metal and Ceramic S Metal are repair agents with excellent insulation properties. They are suitable for repairing dissimilar metal corrosion occurring on sheet surfaces.
[Construction Method] □ Surface Preparation: To protect the inner surface of the tube, insert a rubber plug into the tube and blast the sheet surface. □ Degreasing and Cleaning: Remove the rubber plug from the tube and clean off dirt and rust with a cleaning solution. □ Coating 1: To prevent adhesion on the inner surface of the tube, insert a cork plug into the tube and align the height with the end face of the tube. Apply Ceramic R Metal (Belzona 1311) to the sheet surface with a spatula. □ Coating 2: After the Ceramic R Metal has cured to the touch, apply Ceramic S Metal with a brush (if the fluid temperature on the tube side is above 60°C, apply Ceramic HT). □ Finishing: After the Ceramic S Metal has cured, remove the cork plug using air. ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ [Introducing Examples of Heat Exchanger Tube Sheet Repairs] If you would like examples of repairs, please fill out the form below under "Contact Us" with "Request for Heat Exchanger Repair Examples" and send it. Additionally, if you provide the material, fluid, and temperature, we can also introduce candidate products. ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
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**Ceramic R Metal (Belzona 1311)** [Product Information] □ Form: Paste "after mixing" □ Color: Gray □ Packaging: 2 kg "Base and Hardener Set" □ Coverage Area: 0.83 m² at a film thickness of 1 mm "2 kg set" □ Application Time: 15 minutes at 25°C □ Volume Mixing Ratio: Base 3 : Hardener 1 □ Weight Mixing Ratio: Base 5 : Hardener 1 □ Curing Time: 20 hours at 25°C [Product Properties] □ Flexural Strength: 68.95 MPa □ Shear Adhesion Strength: 18.62 MPa □ Electrical Resistivity: 1.03E17 Ω·m □ Heat Resistance: 200°C in a dry environment **Ceramic S Metal (Belzona 1321)** [Product Information] □ Form: Liquid "after mixing" □ Color: Gray and Blue □ Packaging: 1 kg "Base and Hardener Set" □ Coverage Area: 0.43 m² at a film thickness of 1 mm "1 kg set" □ Application Time: 30 minutes at 25°C □ Volume Mixing Ratio: Base 4 : Hardener 1 □ Weight Mixing Ratio: Base 11 : Hardener 1 □ Curing Time: 24 hours at 25°C [Product Properties] □ Flexural Strength: 68.95 MPa □ Shear Adhesion Strength: 19.99 MPa □ Electrical Resistivity: 3.3E15 Ω·m □ Heat Resistance: 60°C in a liquid environment
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Applications/Examples of results
Heat exchanger
Detailed information
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Insertion of cork stopper before coating operation After surface preparation and degreasing cleaning, a cork stopper is inserted into the tube before the coating operation to prevent adhesion inside the tube.
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Coating with Ceramic R Metal (Belzona 1311) Apply the Ceramic R Metal evenly over the entire surface of the sheet using a spatula.
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Application of Ceramic S Metal (Belzona 1321) After the Ceramic R Metal (Belzona 1311) has cured to the touch, apply the Ceramic S Metal (Belzona 1321) with a brush.
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430 billion yen What do you think this amount represents? This is the total cost incurred in Japan due to corrosion over the course of one year (as of a 2015 survey). To reduce this enormous cost of corrosion prevention, we at Japan Molecular Services Co., Ltd. provide solutions through the British maintenance product "Belzona." Since our founding in 1980, we have been active as the "unsung hero" of domestic plants. Belzona's products are used by various users in over 120 countries worldwide, supporting the foundation of various infrastructures that are essential for global manufacturing and daily life. We value limited resources and continue to advance with the themes of "challenge" and "trust" to support the creation of a gentle environment for people and the planet.
