Steel for high-strength corrosion-resistant reinforcing steel bar containing rare earth elements and heat treatment technology thereof
A rare earth element, high-strength technology, applied in the field of steel for high-strength corrosion-resistant steel bars and its heat treatment process, can solve the problems of poor oxidation resistance, easy corrosion and rust of steel, and reduced safety, so as to reduce overheating sensitivity And temper brittleness, low production cost, and the effect of improving strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0026] This embodiment provides a high-strength corrosion-resistant steel for steel bars containing rare earth elements. The chemical composition is: C: 0.02%, Ni: 5.3%, Cr: 2.47%, Si: 1.23%, Mn: 2.35%, Cu: 2.8%, V: 0.26%, Mo: 0.31%, P: 0.036%, W: 0.65%, rare earth elements: 1.15%, and the balance is Fe; rare earth elements are: La: 3.2%, Gd: 6.5%, Pr: 12.5%, Er: 16%, Ho: 5.8%, Nd: 13.5%, Sm: 14.8%, Lu: 10.5%, and the balance is Yb; the invention also provides the high-strength The heat treatment process of steel used for corroding steel bars is carried out according to the following steps: Step (1): first heat treatment: put the steel in a high-frequency furnace and heat it to 1080 ° C, keep it for 4 hours, and then use water cooling at 16 ° C / s Speed cooling to 720°C, then cooling with oil to 280°C at a rate of 12°C / s; then quenching treatment: put it in a high-frequency furnace and heat to 625°C, keep it for 1 hour, and cool the steel with cooling water at a rate of 8°C...
Embodiment 2
[0028] This embodiment provides a high-strength corrosion-resistant steel containing rare earth elements: the chemical composition is: C: 0.05%, Ni: 5.6%, Cr: 2.49%, Si: 1.26%, Mn: 2.38%, Cu: 3.2%, V: 0.28%, Mo: 0.38%, P: 0.038%, W: 0.68%, rare earth elements: 1.18%, and the balance is Fe; the rare earth elements are: La: 3.5%, Gd: 6.8%, Pr: 14.5%, Er: 18%, Ho: 6.5%, Nd: 13.9%, Sm: 15.3%, Lu: 10.8%, and the balance is Yb; the invention also provides the high-strength The heat treatment process of steel used for corroding steel bars is carried out according to the following steps: Step (1): first heat treatment: put the steel in a high-frequency furnace and heat it to 1100°C, keep it warm for 6 hours, and then use water cooling at 20°C / s Cool at a speed of 730°C, then cool with oil to 300°C at a rate of 14°C / s; Cool down to room temperature at the speed; step (2): Clean the cooled steel surface with an ultrasonic cleaning tank, and then perform quenching and tempering heat tre...
Embodiment 3
[0030] This embodiment provides a high-strength corrosion-resistant steel containing rare earth elements: the chemical composition is: C: 0.03%, Ni: 5.5%, Cr: 2.48%, Si: 1.25%, Mn: 2.37%, Cu: 2.9%, V: 0.27%, Mo: 0.35%, P: 0.032%, W: 0.67%, rare earth elements: 1.16%, and the balance is Fe; rare earth elements are: La: 3.3%, Gd: 6.7%, Pr: 12.8%, Er: 17%, Ho: 6.2%, Nd: 13.8%, Sm: 14.9%, Lu: 10.6%, and the balance is Yb; the invention also provides the high-strength The heat treatment process of steel used for corroding steel bars is carried out according to the following steps: Step (1): first heat treatment: put the steel in a high-frequency furnace and heat it to 1090 ° C, keep it for 5 hours, and then use water cooling at 18 ° C / s Speed cooling to 725°C, then cooling with oil to 290°C at a rate of 13°C / s; then quenching treatment: put it in a high-frequency furnace and heat it to 630°C, keep it warm for 1.8h, and cool the steel with cooling water at a temperature of 9°C / s...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com