Results 51 to 60 of about 1,631 (150)

Aprediction model for the very high cycle fatigue life for inclusion-FGA (fine granular area) -fisheye induced fatigue failure [PDF]

open access: yes, 2017
A prediction model for the very high cycle fatigue life for inclusion-fine granular area (FGA) -fisheye-induced failure was studied in this work. Combined with the experimental results of Cr-Ni-W alloy steel, a local crack initiation life model (LCIL ...
DENG Hai-long   +3 more
core   +1 more source

Effect of Rare Earth Element Lanthanum on Structure and Properties of 0. 20C Steel

open access: yesTeshugang, 2009
Effect of 0 ~0. 072% La on inclusion, structure and elevated temperature tensile properties of 0. 20C stee] melted by a 10 kg medium frequency vacuum induction furnace has been studied by scanning electron microscope, energy dispersive X-ray spectrometer
张芳, 杨吉春
doaj  

Analysis and Process Improvement of Hot Bending Cracking of SA-106B Seamless Steel Pipe [PDF]

open access: yes
After induction heating, the SA-106B seamless steel pipe has cracks during hot bending process, the physical and chemical properties of the SA-106B seamless steel pipe and the hardness uniformity of the full cross-section were analyzed, and the cracking ...
Li Yong, Ni Yanhong, Liu Guanghui, Zhu Zhibao, Zhang Yinqiao, An Tao
core   +1 more source

牛视网膜提取物对人-鼠杂合细胞抗体产生的影响

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 1999
目的: 探讨牛视网膜提取物对人 -鼠杂合细胞抗体产生的影响。方法: 在 PRMI 1640 完全培养基( CM)中加入 20 mg/L 牛视网膜提取蛋白,配成牛视网膜培养基( BREM)。用 MTT 测定、细胞克隆技术、夹心 ELISA 方法和染色体分析, 比较人-鼠杂合细胞 G12在两种培养条件下的细胞活力、克隆效率、人 IgM 分泌和人染色体阳性细胞比率之间的差异。结 果: 用 BREM 培养的 G12 细胞活力高于用 CM 培养(P
doaj  

An Analysis on Surface Cracks of Φ120mm Rolled Products of Steel 25MnCrNiMoA and Process Improvement

open access: yesTeshugang, 2018
The production flowsheet of steel 25MnCrNiMoA (/%: 0.25~0.26C, 0.22~0.25Si, 1.25~1.30Mn, 0.008~0.011P, 0.002~0.004S, 0.45~0.50Cr, 0.36~0. 38Ni, 0.24~0.26Mo, 0.04~0.08Cu, 0.025~0.031Alt) is 100t UHP EAF-LF-VD-Φ650mm bloom casting-rolling to Φ120mm ...
吕安明, 李猛, 刁峰, 张庆
doaj  

Protective mechanism of weathering steel rust layers in atmospheric environments and their stabilization treatment technologies [PDF]

open access: yes
Corrosion is a major cause of steel degradation, leading to material thinning, perforation, stress concentration, and ultimately deterioration of mechanical properties that can result in engineering structure failures.
Baorong HOU   +5 more
core   +1 more source

Prediction model of aluminum consumption with BP neural networks in IF steel production [PDF]

open access: yes, 2017
To solve the high aluminum consumption problem in interstitial-free steel production in a steel plant, an aluminum consumption prediction model was established by mathematical statistics and BP neural networks.
BAO Yan-ping   +3 more
core   +1 more source

Evolution of Inclusions in Gear Steel 18CrNiMo7-6 during 70 t EAF-LF-RH Smelting Process

open access: yesTeshugang, 2022
The evolution of inclusions in gear steel 18CrNiMo7-6 produced by 70 t EAF + LF + RH process is systematically analyzed and studied by means of whole process sampling and ASPEX test.
胡梦頔
doaj  

Influencing Factors and Process Control of Vacuum Consumable Remelting Arc Stability [PDF]

open access: yes
The behaviors of interelectrode arc during vacuum arc remelting of high-temperature alloy and special stainless steel were investigated in this paper, and the influence factors such as electrode size, external quality, and gas element content on arc ...
Liu Wenxue, Liu Guanghui, Li Linsen, Fei Sanlin, XuYong, XieWei, Xu Guangpeng, Ni Yanhong
core   +1 more source

Analysis and Control Practice on Typical Defect of N80 Oil Pipe

open access: yesTeshugang, 2006
The ingredients,characteristics and forming accounts of typical defects - scale-shaped outer-overlap,entraped slag outer-overlap and dregs pit of steel 36Mn2V N80 oil pipe were analyzed.
彭自胜, 徐景峰, 杨敏, 彭其春
doaj  

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