Non-annealed cold forging steel hot-rolled wire rod and production method thereof
A technology of hot-rolled wire rod and production method, which is applied in the field of annealing-free cold heading steel hot-rolled wire rod and its production field, can solve the problems of increasing equipment investment in super-heavy-duty finishing rolling mills, and achieve annealing-free production and cost reduction , the effect of reducing loss
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0022] Embodiment 1: The method for producing annealing-free cold heading steel hot-rolled wire rod adopts the following specific process.
[0023] (1) Smelting and continuous casting process: smelting molten steel and continuous casting into continuous casting slab. The components of the continuous casting slab in weight percentage are: C 0.31%, Si 0.20%, Mn 0.70%, P 0.016%, S 0.008%, Cr 0.04 %, B 0.0019%, the rest is iron and residual elements. In the continuous casting process, the large-section blooms are slowly cooled for 72 hours and then the billet is opened. After hot rolling, a small-section continuous casting slab is obtained. The continuous casting slab is slowly cooled for 72 hours before entering the heating process.
[0024] (2) Heating process: heating the continuous casting slab to 1150°C for 120 minutes; then high-pressure water dephosphorization, and the dephosphorization water pressure is at least 10MPa.
[0025] (3) Rolling and spinning process: the dephosphorize...
Example Embodiment
[0028] Embodiment 2: The production method of the annealing-free cold heading steel hot-rolled wire rod adopts the following specific process.
[0029] (1) Smelting and continuous casting process: smelting molten steel and continuous casting into continuous casting slab. The components of the continuous casting slab in weight percentage are: C 0.32%, Si 0.18%, Mn 0.72%, P 0.016%, S 0.005%, Cr 0.03 %, B 0.0021%, the rest is iron and residual elements. In the continuous casting process, the large-section blooms are slowly cooled for 72 hours and then the billet is opened. After hot rolling, a small-section continuous casting slab is obtained. The continuous casting slab is slowly cooled for 72 hours before entering the heating process.
[0030] (2) Heating process: heating the continuous casting slab to 1190°C, holding time for 110min; then high-pressure water dephosphorization, dephosphorization water pressure at least 10MPa.
[0031] (3) Rolling and spinning process: the dephosphori...
Example Embodiment
[0034] Embodiment 3: The production method of the annealing-free cold heading steel hot-rolled wire rod adopts the following specific process.
[0035] (1) Smelting and continuous casting process: smelting molten steel and continuous casting into continuous casting slab. The components of the continuous casting slab in weight percentage are: C 0.29%, Si 0.15%, Mn 0.72%, P 0.012%, S 0.007%, Cr 0.04 %, B 0.0025%, the rest is iron and residual elements. In the continuous casting process, the large-section blooms are slowly cooled for 72 hours and then the billet is opened. After hot rolling, a small-section continuous casting slab is obtained. The continuous casting slab is slowly cooled for 72 hours before entering the heating process.
[0036] (2) Heating process: heating the continuous casting slab to 1170℃ for 135min; then high-pressure water dephosphorization, the dephosphorization water pressure is at least 10MPa.
[0037] (3) Rolling and spinning process: the dephosphorized cont...
PUM
Property | Measurement | Unit |
---|---|---|
Tensile strength | aaaaa | aaaaa |
Tensile strength | aaaaa | aaaaa |
Tensile strength | aaaaa | aaaaa |
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap