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冷加工钢筋
冷加工钢筋
Cold worked steel bar
常见的品种：冷拉热轧钢筋、冷轧带肋钢筋和冷拔低碳钢丝。
Common varieties: cold drawn hot-rolled steel bar, cold-rolled ribbed steel bar and cold drawn low carbon steel wire.
1）冷拉热轧钢筋
1) Cold drawn hot rolled steel bar
①卸荷后立即重新拉伸，卸荷点成为新的屈服点，因此冷拉可使屈服点提高，材料变脆、屈服阶段缩短，塑性、韧性降低。
① After unloading, the material is re stretched immediately, and the unloading point becomes a new yield point. Therefore, cold drawing can increase the yield point, shorten the yield stage, and reduce the plasticity and toughness.
②若卸荷后不立即重新拉伸，而是保持一定时间后重新拉伸，钢筋的屈服强度、抗拉强度进一步提高，而塑性、韧性继续降低，这种现象称为冷拉时效。
② If the steel is not re stretched immediately after unloading, but re stretched after a certain period of time, the yield strength and tensile strength of the steel bar will be further improved, while the plasticity and toughness will continue to decrease, this phenomenon is called cold drawing aging.
2）冷轧带肋钢筋
2) Cold rolled ribbed bar
①具有强度高、握裹力强、钢制闸门 钢坝 保定轻钢别墅 保定平面设计培训 保定室内设计培训 保定办公家具 保定空调维修 节约钢材、质量稳定等优点。
① It has the advantages of high strength, strong grip, steel saving and stable quality.
②冷轧带肋钢筋分为 CRB550、CRB650、CRB800、CRB970 四个牌号。
② Cold rolled ribbed bars are divided into crb550, crb650, crb800 and crb970.
3）冷拔低碳钢丝
3) Cold drawn low carbon steel wire
冷拔低碳钢丝分为两级，甲级用于预应力混凝土结构构件中，乙级用于非预应力混凝土结构构件中。
Cold drawn low carbon steel wire is divided into two grades, Grade A is used in prestressed concrete structural members, and grade B is used in non prestressed concrete structural members.
（3）热处理钢筋（带肋钢筋）
(3) Heat treatment steel bar (ribbed steel bar)
Cold worked steel bar
常见的品种：冷拉热轧钢筋、冷轧带肋钢筋和冷拔低碳钢丝。
Common varieties: cold drawn hot-rolled steel bar, cold-rolled ribbed steel bar and cold drawn low carbon steel wire.
1）冷拉热轧钢筋
1) Cold drawn hot rolled steel bar
①卸荷后立即重新拉伸，卸荷点成为新的屈服点，因此冷拉可使屈服点提高，材料变脆、屈服阶段缩短，塑性、韧性降低。
① After unloading, the material is re stretched immediately, and the unloading point becomes a new yield point. Therefore, cold drawing can increase the yield point, shorten the yield stage, and reduce the plasticity and toughness.
②若卸荷后不立即重新拉伸，而是保持一定时间后重新拉伸，钢筋的屈服强度、抗拉强度进一步提高，而塑性、韧性继续降低，这种现象称为冷拉时效。
② If the steel is not re stretched immediately after unloading, but re stretched after a certain period of time, the yield strength and tensile strength of the steel bar will be further improved, while the plasticity and toughness will continue to decrease, this phenomenon is called cold drawing aging.
2）冷轧带肋钢筋
2) Cold rolled ribbed bar
①具有强度高、握裹力强、钢制闸门 钢坝 保定轻钢别墅 保定平面设计培训 保定室内设计培训 保定办公家具 保定空调维修 节约钢材、质量稳定等优点。
① It has the advantages of high strength, strong grip, steel saving and stable quality.
②冷轧带肋钢筋分为 CRB550、CRB650、CRB800、CRB970 四个牌号。
② Cold rolled ribbed bars are divided into crb550, crb650, crb800 and crb970.
3）冷拔低碳钢丝
3) Cold drawn low carbon steel wire
冷拔低碳钢丝分为两级，甲级用于预应力混凝土结构构件中，乙级用于非预应力混凝土结构构件中。
Cold drawn low carbon steel wire is divided into two grades, Grade A is used in prestressed concrete structural members, and grade B is used in non prestressed concrete structural members.
（3）热处理钢筋（带肋钢筋）
(3) Heat treatment steel bar (ribbed steel bar)
