This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of engine room bilge coatings. This standard is applicable to the coating system of main engine, auxiliary engine and pump room bilge of steel ship. GB/T 14616-1993 General Technical Conditions for Engine Room Bilge Coatings GB/T14616-1993 Standard Download Decompression Password: www.bzxz.net

National Standard of the People's Republic of China
General specification for engine-room bottom coating
General specification for engine-room bottom coating1 Subject content and scope of application
GB/T 14616--93
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of engine-room bottom coatings. This standard is applicable to the coating system of main engine, auxiliary engine and pump room bilge of steel ship. 2 Reference standards
GB 1724
Determination of coating fineness
GB 1727
GB 1728
General preparation method for paint film
Determination of drying time of paint film and putty film
GB1732
Determination of impact resistance of paint film
GB1734
Determination of gasoline resistance of coating film
Determination of chemical resistance of paint film
GB1763
GB1765
GB1771
Preparation method for paint film for determination of resistance to moisture and heat, salt spray and weathering (artificial acceleration)Determination of salt spray resistance of paint film
GB3186
Sampling of coating products
GB5210
Determination of adhesion of coatingsPull-out method
Determination of density of paints and varnishes
GB 6750
GB 8923
Rust level and rust removal level of steel surface before paintingGB9750
Paint product packaging markwww.bzxz.net
GB10834Determination of salt water resistance of ship paint Salt water and hot salt water immersion method3 Technical requirements
3.1~-General requirements
3.1.1 Engine room bilge paint should be able to be applied and dried in normal environment and under safe conditions. 3.1.2 At a temperature of 20-25℃, the applicable period of two-component paint shall be in accordance with the technical requirements of each product manufacturer. 3.1.3 The engine room bilge paint should be able to be evenly stirred manually or mechanically in the original container for at least one year from the date of manufacture. 3.1.4 The engine room bilge paint should be compatible with commonly used workshop primers. 3.1.5 The engine room bilge paint should be suitable for brushing, rolling and airless high-pressure spraying, and no sagging should occur during construction within the specified coating thickness.
3.1.6 When the engine room bottom coating is naturally aged or damaged, it should be able to be repaired with the original engine room bottom coating system. 3.1.7 The engine room bottom coating should have good miscibility with the specified thinner. 3.1.8 Before the engine room bottom coating is applied, the steel surface must be thoroughly derusted and degreased. The rust removal requirement is St3 level in GB8923.
Approved by the State Administration of Technical Supervision on September 9, 1993 and implemented on May 1, 1994
3.2 Technical indicators
GB/T 14616-93
The technical indicators of the cabin bottom coating shall meet the following requirements: a.
Fineness (μm): ≤80 (except flake coating); Viscosity: meet special technical requirements;
Density (g/mL): meet product technical requirements; Adhesion (N/mm2): ≥3;
Drying time (h): surface dry, ≤8; actual dry, ≤24, impact resistance (cm): 30;
Salt spray resistance (500h): first level;
Hot salt water resistance (336h): the coating film has no blistering, cracking, peeling, wrinkling and rust, etc.; Diesel resistance (23 ± 2℃, half a year): the coating film has no blistering, softening, peeling and rust, etc. 4 Test method
4.1 Fineness
Fineness determination shall be carried out in accordance with the provisions of GB1724. 4.2 Drying time
Drying time shall be determined in accordance with GB1728. 4.3 Impact resistance
Impact resistance shall be determined in accordance with GB1732, and film preparation shall be carried out in accordance with GB1727. 4.4 Oil resistance
Oil resistance shall be determined in accordance with GB 1734. The coating thickness shall meet the technical requirements of the product. 4.5 Salt spray resistance
Salt spray resistance shall be determined in accordance with GB1771, and film preparation shall be carried out in accordance with GB1765. The coating thickness shall meet the technical requirements of the product supporting system.
4.6 Adhesion
Adhesion shall be determined in accordance with GB5210. 4.7 Density
Density shall be determined in accordance with GB6750. 4.8 Heat salt water resistance
Heat salt water resistance shall be determined in accordance with GB10834. The coating thickness shall meet the technical requirements of the product supporting system. 5 Inspection rules
5.1 When there are major changes in technical identification or raw materials and preparation processes, type inspection should be carried out. Type inspection should comply with the technical indicators specified in Article 3.2.
5.2 The manufacturer should conduct factory inspection according to the batch of products. The factory inspection items are fineness, viscosity, density, drying time, and impact resistance. Its technical indicators should comply with the provisions of Article 3.2.
5.3 The product is sampled according to GB3186. The sample should be divided into two parts, one sealed for future reference, and the other for inspection. 5.4 The user department has the right to inspect the product according to the provisions of this standard. If it is found that the quality does not meet the requirements of this standard, the supply and demand parties shall jointly re-sample according to GB3186 and re-inspect the unqualified items. If it still does not meet the requirements of this standard, the product is unqualified and the user department has the right to return it.
6 Marking, packaging, transportation and storage
6.1 The marking and packaging of the product shall comply with the provisions of GB9750. 168
GB/T14616--93
6.2 The product should be stored in a clean, dry, sealed container, and the container should be attached with a qualified label. 6.3 During transportation, the product should be protected from rain and sunlight, and comply with the relevant regulations of the transportation department. 6.4 The product should be stored in a cool, ventilated, dry warehouse that is protected from direct sunlight and should be isolated from fire and away from heat sources. 6.5 Under the storage conditions in accordance with Article 6.4, the effective storage period of the product is one year from the date of production. After the storage period, it can be inspected according to the items specified in this standard. If the inspection is qualified, it can still be used. Additional remarks:
This standard was proposed by China State Shipbuilding Corporation. This standard is under the jurisdiction of the Marine Material Application Technology Sub-Technical Committee of the National Technical Committee for Marine Ship Standardization. This standard was drafted by the 725th Institute of the Seventh Research Institute of China State Shipbuilding Corporation. The main drafters of this standard are Xie Tianlu and Jin Xiaohong. 169
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