As a widely used facility in places such as ships, docks, and offshore platforms, the selection of materials and processes for rubber gangways directly affects their safety, durability, and performance. The following discusses in detail the design and manufacturing points of rubber gangways from both material and process aspects.
1、 Material selection of rubber gangway
The material of rubber gangway is the core of its performance, mainly involving the selection of rubber materials, skeleton materials, and surface treatment materials.
1. Rubber material
Rubber is the main material of the gangway, and its performance directly affects the wear resistance, aging resistance, impact resistance and skid resistance of the gangway. Common rubber materials include:
-Natural rubber (NR): Natural rubber has good elasticity and abrasion resistance, but its anti-aging performance is poor, especially when it is exposed to ultraviolet rays and seawater for a long time. Therefore, natural rubber is usually used in situations where high elasticity is required but low durability is not.
-Chloroprene rubber (CR): chloroprene rubber has excellent oil resistance, weather resistance, and aging resistance, making it particularly suitable for use in marine environments. It also has good ozone resistance and corrosion resistance, and is a commonly used material for manufacturing rubber gangways.
-Nitrile rubber (NBR): Nitrile rubber has good oil resistance and wear resistance, but its weather resistance is poor. It is usually used in situations that require oil resistance but are not exposed to outdoor environments for a long time.
-Ethylene propylene diene monomer (EPDM): EPDM rubber has excellent weather resistance, ozone resistance, and aging resistance, as well as good elasticity and impact resistance, making it one of the ideal materials for manufacturing rubber gangways. Its disadvantage is poor oil resistance, so it is not suitable for environments with a lot of oil stains.
2. Skeleton material
The skeleton material of rubber gangways is usually made of metal or composite materials to enhance the structural strength and stability of the gangway. Common skeleton materials include:
-Galvanized steel: Galvanized steel has good strength and corrosion resistance, making it suitable for use in marine environments. The galvanized layer on its surface can effectively prevent steel from rusting and extend the service life of the gangway.
-Stainless steel: Stainless steel has excellent corrosion resistance and strength, especially suitable for use in highly corrosive marine environments. The commonly used stainless steel materials include 304 and 316 stainless steel, among which 316 stainless steel has stronger corrosion resistance and is suitable for use in high salinity sea areas.
-Composite materials: Composite materials such as fiberglass reinforced plastic (FRP) have the advantages of light weight, corrosion resistance, and high strength, and have gradually been applied in the manufacturing of rubber gangways in recent years. The use of composite materials can reduce the overall weight of the gangway, making it easier to install and transport.
3. Surface treatment materials
In order to improve the anti slip performance and wear resistance of rubber gangways, special treatment is usually carried out on their surfaces. Common surface treatment materials include:
-Anti slip particles: Adding anti slip particles or textures to the rubber surface can effectively improve the anti slip performance of the gangway and prevent personnel from slipping in wet and slippery environments.
-Wear resistant coating: Coating the rubber surface with a wear-resistant coating can improve the wear resistance of the gangway and extend its service life.
2、 Manufacturing process of rubber gangway
The manufacturing process of rubber gangways directly affects their quality and performance, mainly including rubber molding, skeleton processing, surface treatment, and assembly.
1. Rubber molding process
Rubber molding is the core process of manufacturing rubber gangways, usually using compression molding or extrusion molding. Compression molding is the process of placing rubber material into a mold and shaping it through heating and pressure. It is suitable for manufacturing complex shaped gangways. Extrusion molding is the process of extruding rubber material through an extruder, suitable for manufacturing long or simple shaped gangways. During the molding process, it is necessary to strictly control the temperature, pressure, and time to ensure that the performance of the rubber material meets the design requirements.
2. Skeleton processing technology
The processing of skeleton materials usually includes steps such as cutting, welding, and surface treatment. For metal skeletons, it is necessary to first cut and weld according to the design drawings, and then perform surface treatment such as galvanizing or spraying anti rust paint to improve their corrosion resistance. For composite material skeletons, compression molding or extrusion molding processes are usually used to directly produce the desired shape.
3. Surface treatment process
The surface treatment process of rubber gangway includes anti slip treatment and wear-resistant treatment. Anti slip treatment is usually achieved by adding anti slip particles or textures on the rubber surface, which can be achieved through molding or spraying processes. Wear resistant treatment is to apply a wear-resistant coating on the surface of rubber, usually using spray or dip coating processes.
4. Assembly process
The assembly process of rubber gangway includes the bonding of rubber components and skeleton, installation of fixing parts, etc. The bonding between rubber components and the skeleton usually uses high-strength adhesives to ensure a strong bond between the two. The installation of fixed components needs to be carried out according to the design drawings to ensure the stability and safety of the gangway.
3、 Design points of rubber gangway
When designing rubber gangways, in addition to the selection of materials and processes, the following key factors need to be considered:
1. Anti slip performance: The anti slip performance of gangways is directly related to the safety of users. When designing, the arrangement of anti slip particles or textures should be fully considered to ensure that sufficient friction can still be provided in wet and slippery environments.
2. Impact resistance: The gangway may be subjected to impact during use, so its design should ensure sufficient impact resistance to avoid damage caused by impact.
3. Weather resistance: Rubber gangways are usually exposed to outdoor environments. When designing, rubber materials with good weather resistance should be selected, and appropriate surface treatment measures should be taken to extend their service life.
4. Weight and portability: The weight and portability of the gangway are also factors that need to be considered in design, especially in situations where frequent movement or installation is required. When designing, the weight of the gangway should be minimized as much as possible while ensuring its structural strength.
4. Summary
The material and process selection of rubber gangways are key to their performance and quality. In terms of materials, the selection of rubber materials, skeleton materials, and surface treatment materials should be reasonably matched according to the usage environment and performance requirements. In terms of process, strict control is required for rubber molding, skeleton processing, surface treatment, and assembly to ensure the safety and durability of the gangway. Through reasonable design and manufacturing, rubber gangways can provide safe and reliable performance in various complex environments.
