Advantages of using Tokai Spring Industries’ products

Springs Designed for Stable Operation in High-Temperature Environments

Leveraging decades of research and evaluation on creep behavior and stress relaxation under high-temperature conditions, Tokai Spring Industries develops and supplies springs that deliver reliable and stable performance even in severe thermal environments.

Tokai Spring’s sliding nozzle springs are used in steelmaking equipment that controls the flow of molten steel. These springs are specifically designed for high-temperature applications and achieve both high strength and excellent heat resistance through the use of materials such as SKD4, maraging steel, and Inconel X750.
As a result, they can withstand rapid temperature fluctuations and impact loads associated with molten steel flow, contributing to a significantly extended service life.
While conventional springs tend to lose strength at elevated temperatures and require frequent replacement, Tokai Spring’s products offer outstanding fatigue resistance, reducing maintenance frequency and improving operational uptime.

Applicable Spring Materials

Applicable Spring Types

Supporting Our Customers from Product Development to After-Sales Service

• Development & Prototyping

  Our engineers actively commit to our customers’ product development and long-term research projects, providing comprehensive support from prototyping through data collection and evaluation.

• Manufacturing

  We specialize in high-mix, low-volume production. By retaining detailed manufacturing records, we can quickly reproduce springs—even those produced only once more than ten years ago—while maintaining stable quality, high reproducibility, and on-time delivery.

• Replacement & Repair

  Even if a spring was originally manufactured by another supplier, we can reproduce highly accurate springs from a single sample without drawings and deliver them with short lead times.