SEBF Anti-Corrosion Coating Technology for Marine Pump Pumps (Introduction)
Overview
SEBF is the acronym for a fusion-bonded epoxy coating technology. It is a scientific research achievement developed by the Institute of Metal Research, Chinese Academy of Sciences, over a period of 10 years. It has been recommended for industrial promotion and application through expert appraisal by the Chinese Academy of Sciences.
Main Features of SEBF Coating Layer
- The bonding strength between the coating and the substrate is high (>90MPa).
- The coating itself has a high mechanical strength (>18J).
- The coating has excellent permeation resistance (<3.5%).
- The coating has good chemical stability (resistant to acid, alkali, and salt corrosion).
- The coating has a low surface roughness and a small friction coefficient with liquids.
- The coating is non-toxic and meets hygienic standards for food-grade applications.
Applications of SEBF Coating
The SEBF anti-corrosion coating technology is applied to marine pumps by spraying the SEBF series coating onto the inner wall of the pump casing, pump cover, and impeller runner, covering the surfaces of the internal flow passages. This process imparts excellent anti-corrosion, wear-resistance, and cavitation-erosion resistance to the pump components.
This technology is currently widely used in the fields of oil and water transmission pipelines, acid, alkali, and salt transmission pipelines, chemical and energy equipment, and structural components in marine engineering. It has demonstrated excellent social and economic benefits.
Ordering and Selection Instructions
- When placing an order, customers are requested to specify the pump model, main technical performance parameters, and the material requirements for flow-through components.
- This catalog only lists the 50Hz performance parameters for the pump technical data. If you require detailed performance parameters, please contact our company; we will provide you with complete selection services.
- Regarding pump material requirements, we select the corresponding materials for flow-through components based on the different media and pressures being delivered. Our company’s standard pump material specifications are shown in the table below:
| Main Components / Delivery Medium | Seawater | Fresh Water |
|---|---|---|
| Pump casing, Pump cover | ZCuZn16Si4 or ZCuAl8Mn13Fe3Ni2 | HT200 or QT450-10 |
| Impeller | ZCuZn16Si4 or ZCuAl8Mn13Fe3Ni2 | ZCuZn16Si4 or ZCuAl8Mn13Fe3Ni2 |
| Pump shaft | 1Cr18Ni9Ti or 1Cr17Ni2 | 1Cr17Ni2 or 2Cr13 |
| Bracket | HT200 or QT450-10 | HT200 or QT450-10 |
Note: For applications involving strong acids, alkalis, or other special media, the pump casing, pump cover, impeller, and pump shaft can be made of acid-resistant and alkali-resistant stainless steel materials upon selection.
- Regarding the operating range of centrifugal and vortex pumps: Generally, it is 50% to 120% of the rated flow rate. Excessive flow rates for centrifugal pumps will cause the pump motor to overload. During selection, attention must be paid to this issue. For example, if the required pump head is fully closed (zero flow), the pump outlet flow regulating valve should be properly closed, and the required motor power margin should be recalculated (it should be >1.2 times the pump shaft power at the rated flow rate). Otherwise, a motor with greater power should be selected during model selection.
- Our company reserves the right to modify the product design without prior notice.
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