Overvit ew of Anti-rusCoating Technology for Construction Machinery

3 Coatings

Coatings for construction machinery should possess the following characteristics:

It has extremely low permeability to water, oxygen and corrosive media. ② It has strong and long-lasting adhesion to the substrate. ③ It has good anti-rust and decorative properties; ④ It has special properties, such as insulation, electrical conductivity, heat insulation, etc. ⑤ It has an appropriate coating supporting system.

With the need for industrial energy conservation and environmental protection, in addition to ensuring the above-mentioned performance, the coating should also have the properties of quick drying at low temperatures, environmental protection and energy conservation. Such coatings are particularly suitable for the coating of construction machinery parts and complete machines with small production batches.

At present, the coatings generally used in domestic construction machinery are epoxy ester-based primers and polyurethane-based topcoats. The former has good anti-rust performance, while the latter has better decorative performance.

4. Environmental protection and labor safety and hygiene

4.1 Environmental Protection

Environmental protection is a very important issue in the coating design of construction machinery. The basis for this is

Gb8978-7996 "Integrated Wastewater Discharge Standard"

② GB16297-1996 "Integrated Emission Standard of Air Pollutants"

③ GB12348-90 "Noise Standard for Industrial Enterprises"

④ JBJ16-2000 "Code for Environmental Protection Design of Machinery Industry", etc.

We must resolutely implement the relevant design and construction measures for preventing pollution and other public nuisances, and enforce the "three simultaneous" system, which stipulates that the design, construction and commissioning of the main project should be carried out simultaneously.

For instance, in the anti-rust coating project of construction machinery, the regularly discharged coating wastewater and the acid and alkali wastewater discharged from chemical treatment should be collected and regulated, and then treated by a dedicated wastewater treatment unit. Only when they meet the national standards of pH = 6 ~ 9,SS = 70 mg/L, COD = 100 mg·L ⁻ ¹, and petroleum content below 5 mg/L can they be discharged.

In addition, certain measures should also be taken to treat waste gas, waste residue, noise, etc., to meet the standards.

4.2 Labor safety and hygiene

In terms of labor safety and hygiene, the national standards that serve as the basis are:

Gbj16-87 (2001 Edition) "Code for Fire Protection Design of Buildings"

② JBJ18-2000 "Code for Design of Occupational Safety and Health in Machinery Industry" ③ GB6514-1995 "Safety Regulations for Coating Operations - Safety of Painting Processes and Ventilation Purification"

④ GB14443-1993 "Safety Regulations for Coating Operations - Safety Technical Provisions for Coating Drying Rooms"

⑤ GB14444-1993 "Safety Regulations for Coating Operations - Safety Technical Provisions for Spray Booths", etc.

Strengthen the management of labor safety and hygiene in the workshop, and continuously carry out education and training on safety knowledge and labor hygiene. Strictly implement all national and enterprise regulations on labor safety and industrial hygiene.