Introduction of The Insulated Rail Joints
Insulated rail joints, also known as fishplates, are crucial components in railway infrastructure, facilitating the connection between two sections of rail while ensuring electrical isolation. These joints are essential for maintaining the integrity of signaling and traction systems by preventing electrical interference between adjacent rail sections.
Manufactured in specialized factories, insulated rail joints undergo precise thermal processes to encase all metallic components with insulation materials. This meticulous manufacturing process adheres to national standards such as GB11265-89 in China.
Insulated rail joints are typically crafted from materials like ordinary carbon steel, such as Q235-A, Q255-A, or QT400-18, or composite materials. The selection of materials depends on factors such as strength, durability, and electrical insulation properties.
One notable type of insulated rail joint is constructed from high-strength, alkali-free glass fiber-impregnated epoxy resins. These joints are formed using high-temperature forming dies, ensuring a robust and electrically insulated construction. The alkali-free glass fiber, meticulously designed and mechanically calculated, provides resilience and reliability to the joint.
