摘要：【中文】本发明公开了一种HRB500E钢筋及其钒氮微合金化工艺，属于钢筋轧制技术领域，制备过程为：制备钢坯；钢坯加热；轧制；后处理。钢坯中以质量百分比计，包括0.11‑0.25％的C、0.34‑0.80％的Si、≦1.10％的Mn、≦0.045％的P、≦0.045％的S、≦0.08的Ti、≦0.12％的Ni、0.03‑0.07％的V、0.004‑0.015％的N；余量为Fe及杂质；且Ceq≦0.44％；后处理具体方法为：将轧制成型的钢筋加热至300‑500℃，保温1000‑3600s，然后冷却至室温。最终得到的HRB500E钢筋具有高强度、高断裂伸长率，且具有较高的韧性。 【EN】The invention discloses an HRB500E steel bar and a vanadium-nitrogen microalloying process thereof, belonging to the technical field of steel bar rolling, and the preparation process comprises the following steps: preparing a billet; heating a steel billet; rolling; and (5) post-treatment. The steel billet comprises, by mass, 0.11-0.25% of C, 0.34-0.80% of Si, less than or equal to 1.10% of Mn, less than or equal to 0.045% of P, less than or equal to 0.045% of S, less than or equal to 0.08% of Ti, less than or equal to 0.12% of Ni, 0.03-0.07% of V and 0.004-0.015% of N; the balance of Fe and impurities; and Ceq ≦ 0.44%; the post-treatment method comprises the following specific steps: heating the rolled and formed steel bar to the temperature of 300-500 ℃, preserving the heat for 1000-3600s, and then cooling to the room temperature. The HRB500E steel bar obtained finally has high strength, high elongation at break and high toughness.

摘要：【中文】本发明属于耐腐蚀钢筋技术领域，具体涉及一种耐海洋大气腐蚀钢筋及其生产工艺。该腐蚀钢筋中各组分及重量百分比含量为：C：0.05％‑0.45％，Si：0.3％‑0.5％，Mn：0.05％‑0.36％，P≦0.01％，S≦0.01％，Cu：1.5％‑6％，Ni：0.04％‑0.25％，Cr：0.1％‑2％，Ti：0.001％‑0.01％，其余为Fe及不可避免的杂质。本发明提供的耐海洋气候腐蚀钢筋具有如下有益效果：本发明提供的耐腐蚀钢筋在各种条件下均表现出优异的耐腐蚀性能，减少了钢筋使用过程中的养护成本，提高了钢筋的使用寿命。 【EN】The invention belongs to the technical field of corrosion-resistant reinforcing steel bars, and particularly relates to a marine atmospheric corrosion-resistant reinforcing steel bar and a production process thereof. The corrosion steel bar comprises the following components in percentage by weight: c: 0.05% -0.45%, Si: 0.3% -0.5%, Mn: 0.05% -0.36%, P is less than or equal to 0.01%, S is less than or equal to 0.01%, Cu: 1.5% -6%, Ni: 0.04-0.25%, Cr: 0.1% -2%, Ti: 0.001-0.01 percent, and the balance of Fe and inevitable impurities. The marine climate corrosion resistant steel bar provided by the invention has the following beneficial effects: the corrosion-resistant steel bar provided by the invention has excellent corrosion resistance under various conditions, so that the maintenance cost in the use process of the steel bar is reduced, and the service life of the steel bar is prolonged.

摘要：【中文】本发明公开了一种HRB500E热轧带肋钢筋的制备方法，涉及金属材料加工与成型技术领域。包括以下步骤：准备化学成分如下的钢坯，包括C、Si、Mn、N、Al、Ti、V、S、P、Fe和不可避免的不纯物；将以上钢坯送入加热炉中，控制出钢温度为1700‑1850℃；连铸拉坯；加热连铸坯；轧机轧制：轧制时间为125‑140s；第一次冷却；第二次冷却；上冷床进行自然空冷至280℃，收集打捆，即获得HRB500E热轧带肋钢筋。本发明的HRB500E热轧带肋钢筋抗锈蚀性能好，原料成本低、物理性能好，具有很好的应用前景。 【EN】The invention discloses a preparation method of HRB500E hot-rolled ribbed steel bars, and relates to the technical field of metal material processing and forming. The method comprises the following steps: preparing a steel billet with the following chemical components including C, Si, Mn, N, Al, Ti, V, S, P, Fe and inevitable impurities; the steel billets are sent into a heating furnace, and the tapping temperature is controlled to 1700-1850 ℃; continuous casting and blank drawing; heating the continuous casting billet; rolling by a rolling mill: the rolling time is 125-140 s; cooling for the first time; cooling for the second time; and (5) naturally cooling the steel bar to 280 ℃ on a cooling bed, and collecting and bundling the steel bar to obtain the HRB500E hot-rolled ribbed steel bar. The HRB500E hot-rolled ribbed steel bar has the advantages of good anti-corrosion performance, low raw material cost, good physical performance and good application prospect.