Cixi Dingli Spring Co.,Ltd. manufactures a complete lineup of high-force compression springs that are designed for use in applications where extreme temperatures are reached, typical of die-stamping or injection-molding operations.
Our die springs are available from stock in a wide range of standard sizes. But the standards we set for their materials and design distinguish them from other offerings on the market. The excellent performance and durability of Peterson die springs result from the extensive experience and unique resources we have developed in producing a broad portfolio of solutions for the most demanding applications in a variety of industries.
Exceptional Standards For its die springs, Peterson specifies a high-grade, pre-tempered, chrome silicon wire with a trapezoidal cross section. The properties and purity of this material are ensured through extensive testing in our metallurgical laboratory, using a range of analytical resources, including such techniques as electron scanning microscopy and x-ray diffraction to measure residual stresses in the finished spring.
These springs are coiled on CNC equipment with the finished wire taking on a precise rectangular shaped cross section. The proprietary aspect ratio minimizes space between adjacent coils, resulting in a shorter compressed height than our competitor’s products to meet the required loads. Greater travel-to-solid distance across the product line affords flexibility in choosing springs for applications where space is limited. This configuration also provides greater force at the limits of the efficient operating range.
Extended Fatigue Life All die springs are stress-relieved after coiling, compressed to solid to minimize load loss during operation, and shot-peened for long cycle life. Both ends are precision-ground for flatness, and the springs are electrostatically powder coated white and striped to identify duty range (standard series). Springs in the ISO series (inch-metric) are coated in solid colors.
Applications Die springs are primarily used in metal stamping to cushion die impact and to assist stripping of finished parts. They find similar use in plastic injection molding. Other applications include casters, clutches, counter-balance, conveyor tensioning, hydraulic cylinders, shock absorvers, and valve actuators.
Specifications
Over 800 part numbers are in stock for rapid delivery direct from the factory or through our global distribution network:
