Basic Temperature Range Characteristics
- The temperature resistance is determined by the steel's metallographic structure and chemical composition, allowing adaptation to a wide range under normal conditions.
- In low-temperature environments, high-quality carbon steel maintains toughness and structural stability, preventing brittle fracture and meeting conventional low-temperature storage needs.
- In high-temperature environments (within a reasonable range), mechanical strength is maintained, meeting ordinary media storage requirements without special treatment.
- They offer strong versatility and economy, making them a widely used basic storage device in the industrial field.
Performance Degradation under High-Temperature Conditions
- When ambient temperature rises to a critical value, temperature resistance gradually decreases: strength and hardness drop, and creep may occur.
- Prolonged high-temperature exposure can lead to structural deformation, decreased sealing performance, and potential safety hazards.
- High temperatures accelerate oxidation and corrosion, damaging the inner wall protective layer and shortening equipment lifespan.
- Different grades have different high-temperature tolerance thresholds, requiring careful planning based on steel type and application.
Limiting Factors in Low-Temperature Conditions
- The primary limitation is low-temperature brittleness: below the ductile-brittle transition temperature, toughness drops sharply and plasticity deteriorates.
- The tank becomes highly susceptible to fracture under external impact or pressure fluctuations.
- Ordinary carbon steel tanks have weak adaptability to low temperatures, especially with fluid media or pressure variations, posing higher risk.
- For low-temperature use, select low-temperature resistant materials or improve adaptability via insulation and heating.
Optimization Methods for Temperature Resistance
- Material upgrades are core: use high-strength, temperature-resistant specialized carbon steel or alloy modification to enhance inherent limits.
- Structural design optimization: thicken tank walls and optimize weld processes to improve stability under extreme temperatures.
- Comprehensive protective measures: for high temperatures, add insulation layers and cooling systems; for low temperatures, install insulation and heat tracing.
- Regular temperature resistance testing is crucial to promptly identify and address potential hazards, ensuring safe operation within a reasonable range.