Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steel belt for highway guardrail and manufacturing method thereof
The invention discloses a steel strip for highway guardrails and a manufacturing method thereof, and belongs to the technical field of microalloyed steel production, and the steel strip comprises the following components in percentage by mass: 0.09-0.16% of C, 0.15-0.50% of Si, 1.15-1.70% of Mn, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 0.020-0.050% of Alt, 0.018-0.050% of Nb, 0.015-0.040% of Ti and less than or equal to 0.45% of CEV. The microstructure of the obtained steel strip is ferrite and pearlite, the yield strength is larger than or equal to 450 MPa, the tensile strength reaches 520-680 MPa, the percentage elongation after fracture is larger than or equal to 27%, and the impact energy at the temperature of-20 DEG C is larger than or equal to 20 J (the sample size is 55 * 10 * 2.5 mm). The performance of a final finished product meets the actual requirements of the highway guardrail in the alpine region for obdurability, bending and low temperature resistance, the tensile property can be equivalent to that of TRIP steel, and the service life can reach 10-25 years and is more than two times that of traditional highway guardrail Q235B structural steel. The production process is simple, and has high use and popularization value.
本发明公开了一种高速公路护栏用钢带及其制造方法，属于微合金钢生产技术领域，按质量百分比计，组分为C：0.09～0.16％，Si：0.15～0.50％，Mn：1.15～1.70％，P：≤0.025％，S：≤0.025％，Alt：0.020～0.050％，Nb：0.018～0.050％，Ti：0.015～0.040％，CEV≤0.45％。本发明所得钢带显微组织为铁素体+珠光体，屈服强度≥450MPa，抗拉强度达到520～680MPa，断后伸长率≥27％，‑20℃冲击功≥20J(试样尺寸55×10×2.5mm)。最终成品性能满足高寒地区高速公路护栏对强韧性、弯曲、耐低温性能的实际要求，拉伸性能可与TRIP钢相当，使用寿命可达10～25年，是传统高速护栏Q235B结构钢的2倍以上。本发明生产工艺简单，具备较强的使用推广价值。
Steel belt for highway guardrail and manufacturing method thereof
The invention discloses a steel strip for highway guardrails and a manufacturing method thereof, and belongs to the technical field of microalloyed steel production, and the steel strip comprises the following components in percentage by mass: 0.09-0.16% of C, 0.15-0.50% of Si, 1.15-1.70% of Mn, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 0.020-0.050% of Alt, 0.018-0.050% of Nb, 0.015-0.040% of Ti and less than or equal to 0.45% of CEV. The microstructure of the obtained steel strip is ferrite and pearlite, the yield strength is larger than or equal to 450 MPa, the tensile strength reaches 520-680 MPa, the percentage elongation after fracture is larger than or equal to 27%, and the impact energy at the temperature of-20 DEG C is larger than or equal to 20 J (the sample size is 55 * 10 * 2.5 mm). The performance of a final finished product meets the actual requirements of the highway guardrail in the alpine region for obdurability, bending and low temperature resistance, the tensile property can be equivalent to that of TRIP steel, and the service life can reach 10-25 years and is more than two times that of traditional highway guardrail Q235B structural steel. The production process is simple, and has high use and popularization value.
本发明公开了一种高速公路护栏用钢带及其制造方法，属于微合金钢生产技术领域，按质量百分比计，组分为C：0.09～0.16％，Si：0.15～0.50％，Mn：1.15～1.70％，P：≤0.025％，S：≤0.025％，Alt：0.020～0.050％，Nb：0.018～0.050％，Ti：0.015～0.040％，CEV≤0.45％。本发明所得钢带显微组织为铁素体+珠光体，屈服强度≥450MPa，抗拉强度达到520～680MPa，断后伸长率≥27％，‑20℃冲击功≥20J(试样尺寸55×10×2.5mm)。最终成品性能满足高寒地区高速公路护栏对强韧性、弯曲、耐低温性能的实际要求，拉伸性能可与TRIP钢相当，使用寿命可达10～25年，是传统高速护栏Q235B结构钢的2倍以上。本发明生产工艺简单，具备较强的使用推广价值。
Steel belt for highway guardrail and manufacturing method thereof
一种高速公路护栏用钢带及其制造方法
04.10.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C22C
Legierungen
,
ALLOYS
/
B21B
Walzen von Metall
,
ROLLING OF METAL
/
C21D
Veränderung der physikalischen Struktur von Eisenmetallen
,
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
Novel highway guardrail and manufacturing method thereof
| Europäisches Patentamt | 2016
Engineering Index Backfile | 1964