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121.钢筋表面缺陷自动检测装置的设计
[黑色金属冶炼和压延加工业] [2014-03-27]
To inspect the surface quality of steel bar,we designed an automatic system including linear camera and laser.Through the comparison among kinds of cameras,we select linear CCD to our system.The laser is also chosen by us with its high luminance and performance.Through a series of computation,we select the appropriate camera lens to our device.At last,we draw the whole detection system.This device has been used well and provides a good foundation for prospective image processing.
关键词：钢铁；表面缺陷；检测体系；线性光源；线性摄像机
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122.欧洲标准负载实施情况下基于遗传算法的钢结构的优化问题
[黑色金属冶炼和压延加工业] [2014-03-26]
This paper presents an implementation of Eurocode load cases for discrete global optimi-zation algorithm for planar structures based on the principles of finite element methods and genetic algorithms.The final optimal design is obtained using IPE sections chosen as feasible by the algorithm,from the available steel sections from industry.The algorithm is tested on an asymmetric planar steel frame with promising results.
关键词：钢铁；优化；遗传算法；欧洲标准
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123.超临界水氧化处理技术处理焦化废水中316L不锈钢和625合金的腐蚀性能
[黑色金属冶炼和压延加工业] [2014-03-26]
The corrosion behavior of 316L stainless steel and alloy 625 were deteced in superciritical water oxidation (SCWO) process for coking wastewater treatment.The operation conditions were 500 ℃, 25 MPa, oxygen ratio of 3.5 and the reaction time of 150 h.Surface morphologies of metal samples, oxide structure and compositions across the oxide thickness of the metal samples after SCWO were analyzed using SEM and ESD, and the corrosion rates for both samples were obtained.Pitting corrosion was found on the surface of 316L stainless steel with a corrosion rate of 0.334 mrn/a.While no remarkable corrosion was found on the surface of alloy 625, and the corrosion rote is 0.052 mm/a.
关键词：钢铁；腐蚀；超临界水氧化技术；焦化废水；316L不锈钢；625合金
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124.回火温度对铌钛微合金化低碳贝氏体钢组织性能的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
The effect of tempering temperature on microstructures and mechanical properties of niobium and titanium microalloying low carbon bainite steel was investigated.The results indicate that the mechanical properties change is mainly controlled by the structure evolution,and as the structure evolution during tempering is complex,the mechanical properties do not monotonously increase or decrease with the increasing of tempering temperature.
关键词：钢铁；回火温度；铌钛微合金；低碳贝氏体；组织性能
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125.回火温度对35crmnsimo铸钢的微观结构和机械性能的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
The tempering temperature on microstructure and mechanical properties of 35CrMnSiMo cast steel are studies in this article.Results showed that 880℃ x30min 35CrMnSiMo cast steel after quenching water,hardness up to 49.6HRC,reached 39.04 J/cm2 toughness.
关键词：钢铁；回火温度；微观结构；机械性能
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126.冷却速率对bearing-B钢铁的金相组织和硬度的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
Effects of cooling rate on metallographic and hardness ofbearing-B steel were investigated in presem research. The results showed it consists of ferrite and pearlite formed in the initial stage of the transformation in the studied bearing-B steels cooled at 0.5 ℃/s.
关键词：钢铁；冷却速率；金相组织；硬度；bearing-B钢铁
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127.20CrMo合金钢热变形中动态再结晶行为的研究
[黑色金属冶炼和压延加工业] [2014-03-26]
Hot compression deformation test were conducted on 20CrMo alloy steel on a Gleeble-1500D thermal simulator when the deformation amount was 30％,temperature ranged from 1273 to 1373K and strain rate from 0.0015 to 0.015s-1.Flow stress curves were obtained under different deformation conditions; DRX activation energy was calculated using mathematical method.The starting time of DRX was analyzed and the kinetic equation of DRX was established.This model fits well with test data and can meet the requirement of engineering calculation.
关键词：钢铁；动态再结晶；热变形；连铸连轧
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128.脉冲电流对钢坯显微组织演化影响的实验研究
[黑色金属冶炼和压延加工业] [2014-03-26]
This paper studies the influence to the microstructural evolution of low carbon steel and low carbon Nb steel through experiments in order to improve the microstructure of billet.The results of the study show that electropulsing has significant impact on the phase transformation from austenite to ferrite of low carbon steel and low carbon Nb steel,which improves nucleation rate of ferrite inside austenite grain.
关键词：钢铁；钢坯；显微组织；脉冲电流；铁素体；成核现象
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129.报废汽车钢板的粉碎试验与仿真研究
[汽车制造业,黑色金属冶炼和压延加工业] [2014-03-26]
The shredding test and simulation of steel-plate of scrap automobile are mentioned in this text.The result of experiment and simulation are compared.The situation of experiment and attaining the simulation result by the postprocessor program of ANSYS has found a reliable analysis method.The engineering software of ANSYS/ LS-DYNA is used to simulate.
关键词：汽车；钢铁；报废汽车；汽车钢板；粉碎试验；计算机模拟
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130.强制对流S32205双相不锈钢细化晶粒的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
The effects of forced convection on grain refinement of S32205 duplex stainless steel (DSS)were investigated using a continuous casting simulation setup.The sample,which was called slab simulating unit here,was solidified in the continuous casting simulation setup,whose temperature was controlled according to the cooling curve of a DSS slab center,with the bottom cooled by rtmning water to simulate the solidification process of slab.
关键词：钢铁；双相不锈钢；细化晶粒；等轴晶粒；CET
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