Titanium microalloying hot-rolling thick steel plate with low yield ratio and high strength and production process of steel plate
A micro-alloying, low yield-strength ratio technology, applied in the fields of steel smelting, controlled rolling and controlled cooling, and metal material manufacturing, can solve the problems of high cost, complex process, lack of advantages in cost and energy consumption, and achieve low production cost, Simple production process, good economic benefits and social benefits
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] The specific composition of the slab in this embodiment is by weight percentage: C: 0.15%, Si: 0.26%, Mn: 0.69%, Ti: 0.08%, Als: 0.025%, P: 0.020%, S: 0.006%, and the rest are Fe and unavoidable impurities, carbon equivalent CEV (%): 0.29, continuous casting slab thickness 250mm.
[0029] The specific production process is carried out according to the following steps:
[0030] 1) Billet heating: heat the billet to 1220~1270°C (the specific temperature is controlled by the computer according to the thickness of the billet and the production rhythm), keep it warm for 180 minutes, fully austenitize, and ensure the remelting of microalloy elements;
[0031]2) Rolling in the recrystallization zone: the rolling start temperature in the recrystallization zone is 1050°C to obtain an intermediate billet, and the reduction rate of each pass in the recrystallization zone is controlled at 25% to 40%;
[0032] 3) Rolling in the non-recrystallized area: when the intermediate billet ...
Embodiment 2
[0040] The specific composition of the slab in this embodiment is as follows: C: 0.18%, Si: 0.20%, Mn: 0.80%, Ti: 0.07%, Als: 0.030%, P: 0.010%, S: 0.007%, and the rest It is Fe and unavoidable impurities, carbon equivalent CEV (%): 0.34, continuous casting slab thickness 250mm.
[0041] The specific production process is carried out according to the following steps:
[0042] 1) Billet heating: heat the billet to 1220~1270°C, keep it warm for 190 minutes, fully austenitize, and ensure the re-dissolution of micro-alloy elements;
[0043] 2) Rolling in the recrystallization zone: the rolling start temperature in the recrystallization zone is 1180°C to obtain an intermediate slab, and the reduction rate of each pass in the recrystallization zone is controlled at 25% to 40%;
[0044] 3) Rolling in the non-recrystallized area: when the intermediate billet is cooled to 930°C, roll in the non-recrystallized area, the final rolling temperature is 860°C, and the cumulative reduction r...
Embodiment 3
[0051] The specific composition of the slab in this embodiment is as follows: C: 0.16%, Si: 0.40%, Mn: 0.50%, Ti: 0.06%, Als: 0.010%, P: 0.015%, S: 0.010%, and the rest It is Fe and unavoidable impurities, carbon equivalent CEV (%): 0.27, continuous casting slab thickness 250mm.
[0052] The specific production process is carried out according to the following steps:
[0053] 1) Billet heating: heat the billet to 1220~1270°C, keep it warm for 200min, and austenitize the components;
[0054] 2) Rolling in the recrystallization zone: the rolling start temperature in the recrystallization zone is 1096°C to obtain an intermediate slab, and the reduction rate of each pass in the recrystallization zone is controlled at 25% to 40%;
[0055] 3) Rolling in the non-recrystallization area: when the intermediate billet is cooled to 940°C, rolling is carried out in the non-recrystallization area, the final rolling temperature is 820°C, and the cumulative reduction rate in the non-recrysta...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
| elongation | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More