TB-Extremely Heavy Load Brown Alloy Steel Die Spring
Share to:
| Diameter: | |
|---|---|
| Quantity: | |
Product Description
●Product Introduction
Die springs are essential elastic components in the mold manufacturing industry. Unlike standard cylindrical springs, die springs are typically made from rectangular or flat wire, which allows them to withstand significantly higher loads than round-wire springs of the same installed space.
This series of die springs is manufactured in strict accordance with international standards (such as ISO 10243 or JIS B5012), using high-fatigue-life alloy chrome vanadium steel or silicon chrome steel. They feature compact size, high force output, good heat resistance, and long service life. These springs are key components for stripping, resetting, and pressure applications in precision stamping dies, plastic molds, and automated fixtures
●Structural Features
High Load Capacity: Delivers 30%–50% higher load compared to standard springs of the same size, providing ample initial force within a compact mold space.
Precise Return: Provides a stable and linear force curve, ensuring that ejector pins, slides, or stripper plates return accurately to their original position after high-speed movement, preventing interference during mold closing.
Impact and Fatigue Resistance: Enhanced by presetting and shot peening, offering excellent fatigue resistance. Capable of millions of compression cycles without easy fracture.
Preload Adjustment: Colour-coded load grades (e.g., light load, medium load, heavy load, extra heavy load) help engineers select the appropriate preload according to operating conditions, preventing overload when the mold closes.
●Technical Specifications
-
Parameter Description / Value Material 55CrSi (silicon chrome steel) / 50CrVA (chrome vanadium steel) — heat resistant up to approx. 250°C Standards ISO 9001 certified; conforms to JIS / ISO / DIN dimensions Colour Code • Yellow – Lightest load (more flexible, long travel)
• Blue – Light load
• Red – Medium load
• Green – Heavy load
• Brown – Extra heavy load (highest rigidity)Maximum Compression Ratio Typically 30%–40% (some ultra‑compression types up to 45%) Wire Thickness (Rectangular section) Typically 2.0 mm – 12.0 mm Outside Diameter Range 6 mm – 70 mm Free Length Range 10 mm – 300 mm Surface Finish Electrophoretic coating or dyed ; provides certain rust resistance
●Typical Applications
Stamping Dies:
Stripper plates: Provides blank-holding force to prevent wrinkling, and strips scrap / finished parts from the punch after punching or blanking.
Slide return: Returns side-action slides to their initial position after core pulling.
Ejector systems: Ejects formed parts from the die cavity using spring force.
Plastic Molds:
Ejector plate return: Ensures safe return of ejector plates before mold closing after part ejection.
Early return mechanisms: Works with springs to sequence slide and ejector movements, preventing mold clash.
Automation & Fixtures:
Used for energy absorption, providing gripping force on robotic pick-and-place units, and pushing mechanisms in various jigs.
Equipment Maintenance:
Used in clutches, brakes, or special valve actuators where installation space is limited but high force is required.
