Wuyang Iron and Steel Co.

Wuyang, China

Wuyang Iron and Steel Co.

Wuyang, China

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Sun F.,Tongji University | Sun M.,Tongji University | Li G.,Tongji University | Xiao Y.,London South Bank University | And 2 more authors.
Jianzhu Jiegou Xuebao/Journal of Building Structures | Year: 2014

Three flush end-plate bolted steel connections were tested under cyclic loading in this research program. One specimen was designed with Q345 steel end-plate and the other two were constructed with Q690 high strength steel end-plates. Two different steel grades (Q345 and Q690) were also chosen for the beam and column members. The influence of rigid column and nonrigid column on connection behavior was also considered. The test results were compared with the calculated values by the component method from Eurocode EC3.It is shown that the moment resistance of the connections with high strength steel is 30% higher than that of normal strength steel. However, the bolts in the steel connections with high strength end-plate are prone to fracture due to the thick plate used. Therefore, either large size bolts or thinner end-plates can be used to improve the ductility of the high strength steel connections. The moment resistance for steel connections with rigid column is nearly the same as the nonrigid one. The method proposed in EC3 for moment resistance calculation of the mild steel connection is still applicable to the high strength steel connection, but the methods for evaluating rotational stiffness and identifying failure mode for a high strength connection are no longer valid.


Chen S.,Tongji University | Lu Z.,Tongji University | Li G.,Tongji University | Wei M.,Wuyang Iron and Steel Co. | And 2 more authors.
Jianzhu Jiegou Xuebao/Journal of Building Structures | Year: 2014

To evaluate seismic performance of Q690D high-strength steel (HHS) welded columns, cyclic loading tests were carried out for H-section and box-section Q690D HSS welded columns with nominal axial compression ratio of 0.35. Failure modes were observed. The hysteretic loops and skeleton curves of the specimens were obtained. The hysteretic behavior of Q690D HHS welded columns was further studied from the aspects of bearing capacity, plasticity development, deformation capacity and energy dissipation capacity. According to the test results, Q690D HHS welded columns show good energy dissipation capacity and seismic performance. Second order effect cannot be neglected for Q690D HHS welded columns. The failure mode of Q690D welded column subjected to cyclic loading is elasto-plastic local buckling of plate. The maximum inter-story drift angle reaches 1/17 for H-section columns and 1/23 for box-section columns respectively, which far exceeds the requirement of GB 50011-2010 'Code for seismic design of buildings'. Flame straightening significantly affects the mechanical properties of welded box-section HHS columns and then the failure location. Thus it should be strictly restrained from applying flame straightening at the location with high stress ratio for high strength steel member. ©, 2014, Science Press. All right reserved.


Wang H.C.,Anhui University of Technology | Liu D.,Wuyang Iron and Steel Co. | Liao Z.Y.,Anhui University of Technology | Li M.,Anhui University of Technology | And 4 more authors.
Advanced Materials Research | Year: 2011

Molten, commercially pure aluminum has been treated ultrasonically with differing input power. The results show that the ultrasonic power can significantly refine the microstructure of the aluminium and increase the hardness of the samples. A mathematical model developed in this paper can predict the effect of the ultrasonic power on the grain size of the pure aluminium well. © (2011) Trans Tech Publications.


Xie L.,Wuyang Iron and Steel Co. | Wu Y.,Wuyang Iron and Steel Co. | Wei M.,Wuyang Iron and Steel Co. | Yuan J.,Wuyang Iron and Steel Co.
Energy Materials 2014, Conference Proceedings | Year: 2014

The article describes the technical indexes and actual product properties of Cr-Mo steel plate for hydrogen service produced by Wugang, Comparing with the same product from first-class steelworks abroad, the actual product properties of Cr-Mo steel plate for hydrogen service from Wugang are equivalent to those of the same product from abroad.


Yan Q.,University of Science and Technology Beijing | Wang F.-M.,University of Science and Technology Beijing | Cheng H.-J.,University of Science and Technology Beijing | Zhang J.-P.,University of Science and Technology Beijing | Sang D.-G.,Wuyang Iron and Steel Co Ltd
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2013

Based on the measurement of the different dilatometric curves of continuous cooling transformation by using DIL805A quenching and deformation dilatometer, optical microstructure and hardness measurement, the continuous cooling transformation (CCT) curve was obtained for the under-cooled austenite of WQ960E steel. The effect of cooling rate on microstructure evolution was investigated by optical microscope and scanning electron microscope. The results show that the microstructure of the tested steel consists of ferrite(F) and granular bainite(GB) after phase transition at the cooling rate of 0.06°C/s; the granular bainite(GB) appeares at the cooling rate of 0.2°C/s; the microstructure contains granular bainite(GB) and lath bainite(LB) at the cooling rate of 0.5°C/s; the martensite(M) is observed at the cooling rate of 5°C/s.


Wang X.,Wuyang Iron and Steel Co. | Zhang Z.,Wuyang Iron and Steel Co. | Zhang P.,Wuyang Iron and Steel Co.
7th International Conference on High Strength Low Alloy Steels, HSLA Steels 2015, International Conference on Microalloying 2015, Microalloying 2015 and International Conference on Offshore Engineering Steels 2015, OES 2015 | Year: 2015

Recently, with the rapid upgrading of the equipment in the steel Corp, the rolling technology of TMCP has been rapidly developed and widely applied. A large amount of steel plate has been produced by using the TMCP technology.The TMCP processes have been used more and more widely and replaced the heat treatment technology of normalizing, quenching and tempering heat process. In this paper, low financial input is considered in steel plate production and the composition of the steel has been designed with low C component, a limited alloy element of the Nb, and certain amounts of Mn element. During the continuous casting process, the size of the continuous casting slab section is 300 mm x 2400 mm. The rolling technology of TMCP is controlled at a lower rolling and red temperature to control the transformation of the microstructure. Four different rolling treatments are chosen to test its effects on the 390MPa grade low carbon steel of bainitic microstructure and properties. This test manages to produce a proper steel plate fulfilling the standard mechanical properties. Specifically, low carbon bainite is observed in the microstructure of the steel plate and the maximum thickness of steel plate under this TMCP technology is up to 80mm. The mechanical property of the steel plate is excellent and the KV2 at -40 °C performs more than 200 J. Moreover, the production costs are greatly reduced when the steel plate is produced by this TMCP technology when replacing the current production process of quenching and tempering. The low cost steel plate could well meet the requirements of producing engineering machinery in the steel market.


Wu Y.,Wuyang Iron and Steel Co. | Wei M.,Wuyang Iron and Steel Co. | Xie L.,Wuyang Iron and Steel Co. | Liu S.,Wuyang Iron and Steel Co. | Yuan J.,Wuyang Iron and Steel Co.
7th International Conference on High Strength Low Alloy Steels, HSLA Steels 2015, International Conference on Microalloying 2015, Microalloying 2015 and International Conference on Offshore Engineering Steels 2015, OES 2015 | Year: 2015

The article describes the production process and actual product properties of Cr-Mo steel for gasifier developed by Wugang. By taking key technological measures such as optimized composition design, grain refining, microstructure homogenization, simulated post welding heat treatment process, Wugang has successfully produced SA387Gr11C12 steel plate under hydrogen environment,which satisfies the performance requirements of gasifier. Comparing with the same product produced by foreign advanced steel works, Wugang produced steel plate for gasifier is of good actual product properties with equivalent properties of those from foreign advanced steel works.


Peng Z.,Wuyang Iron and Steel Co. | Xie L.,Wuyang Iron and Steel Co. | Ming W.,Wuyang Iron and Steel Co. | Li J.,Wuyang Iron and Steel Co.
7th International Conference on High Strength Low Alloy Steels, HSLA Steels 2015, International Conference on Microalloying 2015, Microalloying 2015 and International Conference on Offshore Engineering Steels 2015, OES 2015 | Year: 2015

In the shipbuilding industry, the welding efficiency of the ship plate not only has a great effect on the construction cost of the ship, but also affects the construction speed and determines the delivery cycle. The steel plate used for large heat input welding was developed sufficiently. In this paper, the composition of the steel with a small amount of Nb, Ti and large amount of Mn had been designed in micro-alloyed route. The content of C and the carbon equivalent were also designed to a low level. The technology of oxide metallurgy was used during the smelting process of the steel. The rolling technology of TMCP was controlled at a low rolling temperature and ultra-fast cooling technology was used, for the purpose of controlling the transformation of the microstructure. The microstructure of the steel plate was controlled to be the mixed microstructure of low carbon bainite and ferrite. Large amount of oxide particles dispersed in the microstructure of steel, which had a positive effects on the mechanical property and welding performance of the steel. The mechanical property of the steel plate was excellent and the value of longitudinal Akv at -60 °C is more than 200 J. The toughness of WM and HAZ were excellent after the steel plate was welded with a large heat input of 100-250 kJ/cm. The steel plate processed by mentioned above can meet the requirement of large heat input welding.


Chang Y.,Control Iron and Steel Research Institute, China | Wei M.,Wuyang Iron and Steel Co. | Liu L.,Wuyang Iron and Steel Co.
Proceedings of the 10th International Conference on Steel Rolling | Year: 2010

Large thickness ESR steel is of various features, i. e., high cleanliness, good soundness, homogeneous chemical composition and excellent application performance. Since the startup of the domestic first large slab ESR furnace in Wuyang Iron and Steel Co., Ltd. ( hereinafter referred to as Wugang), dozens of ESR steel grades of large thickness and higher internal quality have been developed in succession by Wugang, which filled the blank of high end products in the field of wide and heavy plate in China and replaced the forging products. The article highlights the current situation of ESR furnace and the development of ESR steel grades, and carries out analysis on the quality problems occurred in the process of product development, presenting an approach for the development of high end ESR steel grades in the future.

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