Introduction
Chrome vanadium spring steel wire is a kind of advanced material, which is widely used in many industrial fields due to its excellent physical and mechanical properties, such as its high tensile strength, high elasticity and good fatigue resistance. In 1993, the Ministry of Machinery Industry of Peoples Republic of China proposed a chromium vanadium spring wire standard - YB/T5136-1993. This standard is recognized and certified by the worlds major industrial standards organizations as a universal reference example for the application of chrome vanadium spring wires in the production of valves.
Performance of Chrome Vanadium Spring Steel Wire
Before using the chrome vanadium spring steel wire as the material of the valve, we must first understand the performance parameters of the material. Chrome vanadium spring wire is an alloy spring material, the chemical composition of which includes C: 0.17%, Mn: 0.7-1.2%, Si: 0.17-0.37%, Cr: 0.8-1.2%, and V: 0.17-0.37%. Its tensile strength is 1200N/mm2 or above. Its yield strength is 850N/mm2 or above. Its ductility is ≥16%. Its fatigue strength is δe=15% or above and its elasticity is 1.8-2.0 times its tensile strength.
Usage of Chrome Vanadium Spring Steel Wire
Chrome vanadium spring steel wire can be used for the production of valve components, spools, valve shafts and other related components that require excellent performance, especially for valves and valve parts used in high-pressure and high-temperature environments, such as oil and gas pipelines, nuclear power plants, off-shore oil rigs and oil refineries. Due to its excellent fatigue resistance, chrome vanadium spring steel wire can ensure sufficient service life and can maintain the performance of the valve even under frequent use.
Quality Standard of Chrome Vanadium Spring Steel Wire
The Ministry of Machinery Industry of Peoples Republic of China (YB/T5136-1993) has formulated a comprehensive standard for the use of chrome vanadium spring wires in valve production. This standard includes several dimensions, surface requirements, mechanical properties and quality control requirements of the material, which should be strictly complied with during the production of valves. This standard emphasizes the requirement of high tensile strength and above so as to ensure the reliable performance of the valve in high-pressure and high-temperature environments.
Conclusion
Chrome vanadium spring steel wire is an ideal material for the production of valves due to its superior performance parameters and excellent fatigue resistance. The Ministry of Machinery Industry of Peoples Republic of China has imposed a comprehensive quality standard (YB/T5136-1993) for the production of valves with chrome vanadium spring wires. This standard has also been recognized and certified by the worlds major industrial standards organizations and is a universal reference for the production of valves with chrome vanadium spring wires.
