首页|高层建筑用Q345GJDZ25热轧H型钢的研制

高层建筑用Q345GJDZ25热轧H型钢的研制

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为了保证高层建筑用钢Q345GJDZ25热轧H型钢的各项技术指标满足要求,采用Ⅴ-Ti微合金化结合再结晶控轧工艺,对Q345GJDZ25钢极限规格H428 mm×407 mm×20 mm×35 mm热轧H型钢进行了试制.结果表明:试制产品的下屈服强度为358～403 MPa,抗拉强度为498～534 MPa,屈强比为0.72～0.78,伸长率为26％～32％,平均冲击功为140～190 J,φz为40％～55％,冷弯和探伤全部合格.
Development of Q345GJDZ25 hot rolled H-shape steel for high-rise building
To guarantee the technical index of Q345GJDZ25 hot rolled H-shape steel for high-rise building meeting the requirements,Q345GJDZ25 hot rolled H-shape steel with limit specification H428 mm × 407 mm × 20 mm × 35 mm was trial-produced by Ⅴ-Ti microalloying combined with recrystallization controlled rolling process.The results showed that the lower yield strength of the trial product was 358-403 MPa,the tensile strength 498-534 MPa,the yield ratio 0.72-0.78,the elongation 26％-32％,the average impact power 140-190 J,and Φz40 ％-55 ％.The cold bending and the ultrasonic examination were qualified.

steel for high-rise buildingQ345GJDZ25hot rolled H-shape steelZ-direction propertyⅤ-Ti microalloying

尹宏超、郭秀辉

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中国船级社质量认证公司新疆分公司,新疆乌鲁木齐830011

山东钢铁股份有限公司莱芜分公司技术中心,山东莱芜271105

高层建筑用钢 Q345GJDZ25 热轧H型钢 Z向性能 Ⅴ-Ti微合金化

2017

钢铁研究
武汉钢铁（集团）公司

钢铁研究

CSTPCD
影响因子：0.314
ISSN：1001-1447
年,卷(期)：2017.45(6)
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