Shenyang Casting and Forging Industrial Co.

Shenyang, China

Shenyang Casting and Forging Industrial Co.

Shenyang, China
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Qu Y.-D.,Shenyang University of Technology | Liu T.-B.,Shenyang University of Technology | Sun X.-Z.,Shenyang Casting and Forging Industrial Co. | Li R.-D.,Shenyang University of Technology | Bai Y.-H.,Shenyang University of Technology
Shenyang Gongye Daxue Xuebao/Journal of Shenyang University of Technology | Year: 2012

The numerical simulation for the flow field of atomized gas in two typical atomizing structures, namely limited and unlimited structures, was performed. According to the simulation results, the distribution of atomization gas flow field in two structures and the change rule of individual parameter on the axial line were analyzed. In addition, the same and different points of gas behavior in two structures were pointed out through performing the comparison. The results show that the backflow regions can form in two structures, but the morphologies of backflow regions are different. Moreover, the backflow strength in the limited structure is higher, and the decrease in the temperature of backflow region is more obvious. A stagnation point with zero velocity appears below the backflow region, but is not the maximum pressure point in the gas field. The maximum pressure point locates at the region below the stagnation point, and is the convergent point of main flow at the jet-flow center. In the spaying process, the atomized gas flow will move in an oscillation mode, and the oscillation amplitude of the gas flow in the limited structure is bigger. With increasing the spaying distance, the oscillation of the gas flow weakens.


Xiao B.-L.,Shougang Institute of Technology | Xu Y.-B.,Northeastern University China | Li Z.-J.,Xinjiang Bayi Iron and Steel Co Ltd | Zhang F.-S.,Shenyang Casting and Forging Industrial Co Ltd | Wang G.-D.,Northeastern University China
Journal of Iron and Steel Research | Year: 2011

The microstructural evolution, phase transformation kinetics and strengthening and toughening mechanism of X70 pipeline steel rolled by process of high temperature large deformation and ultra fast cooling were investigated in comparison with traditional TMCP process. It is showed that comprehensive mechanical properties of the tested steel are improved by means of refining grain, increasing dislocation density and refining precipitation in the process of high temperature large deformation and ultra fast cooling. In addition, ductile-brittle transition temperature firstly decreases and then increases with decreasing of finish cooling temperature. Degenerated pearlite resulting from higher finish cooling temperature and carbide from lower finish cooling temperature weaken toughness of the tested steel and optimal specification parameters are as follows, finish rolling temperature being 930°C, finish cooling temperature 600°C and cooling rate 80°C /s.


Liu D.-M.,Shenyang Research Institute of Foundry | Zhang F.-W.,Shenyang Casting and Forging Industrial Co. | He L.-M.,Dalian Deep Blue Pamp Co.
Zhuzao/Foundry | Year: 2011

The present status of cast iron production and energy consumption were reviewed. Some measurements on energy saving and pollutant reduction were discussed from aspects such as molding material, casting process and tooling design, melting, heat treatment, numerical simulation technology, etc. Some valuable references were provided for cast iron enterprises to realize green casting.


Jiang S.-P.,Shenyang Casting and Forging Industrial Co. | Su W.-S.,Shenyang Casting and Forging Industrial Co. | Sun X.-Z.,Shenyang Casting and Forging Industrial Co.
Zhuzao/Foundry | Year: 2011

The casting process of ductile iron pipeline with high impact strength and high toughness at low temperature was presented. Through reasonable graphite spheroidizing treatment and inoculation, the structure with fine spheroid graphite and high percent of spheroidization was obtained. The feederless casting of pipeline was realized by intensive cooling on the heavy section by using of chill, and making full use of self-feeding of graphitization expansion. The as-cast structure of pipeline obtained satisfies the requirements of mechanical properties and low temperature impact strength of EN-GJS400-18U-LT.


Jiang S.-P.,Shenyang Casting and Forging Industrial Co.
Zhuzao/Foundry | Year: 2011

The concept of foundry industrial cluster was elaborated in this paper. Present situation of China's foundry industrial cluster was presented, and several proposals were put forward on how to advance the construction and development of the foundry industrial cluster.


Liu P.,Shenyang Casting and Forging Industrial Co. | Wang Y.-X.,Shenyang Casting and Forging Industrial Co. | Liu H.-S.,Shenyang Casting and Forging Industrial Co.
Zhuzao/Foundry | Year: 2013

Tyre casting in cast steel is a key part for rotary kiln. A single-piece blank weight is the range of 40-60 tons. It is required that the surface hardness of the outer rings is more than HB 185. If conventional normalizing and tempering procedure is applied, the tyre's surface hardness can only be HB 150-170 due to slow air cooling rate. Through process analysis, we developed a large flow spray device with simple structure and low manufacturing cost. By using of the homemade device, the surface hardness of the outer rings for all tyres after spray normalizing treatment and routing tempering process are all at HB 180-220, reaching the requirements of technical specification. And because high efficiency cooling spray can refine structure, the ultrasonic inspection did not show grain coarse defect as well. On-site operations of many times show that the process is stable and economic benefit is dramatic.


Liu P.,Shenyang Casting and Forging Industrial Company | Liu H.-S.,Shenyang Casting and Forging Industrial Company | Wang H.,Shenyang Casting and Forging Industrial Company
Zhuzao/Foundry | Year: 2013

Through analyzing the complicated structure and the technical difficulties of cylinder block. A series of process measures were adopted, such as placing the ring riser to provide good feeding conditions, and placing external chill at the thick parts and large hot spots to promote the molten metal to solidify directionally from the bottom to the top, thereby preventing the defects of shrinkage cavity and shrinkage porosity from occurring. In addition, two layers of horizontal runners were utilized to avoid the defects such as cold laps or misrun We have successfully manufactured qualified lower part of cylinder block casting whose chemical compositions, mechanical properties and quality all meet the requirement of technical specifications. Its success will provide a good experience for the production of this kind of large-sized and complex steel castings.


Xiao B.-L.,Northeastern University China | Xu Y.-B.,Northeastern University China | Zhang F.-S.,Shenyang Casting and Forging Industrial Co. | Hou X.-Y.,Northeastern University China | Wang G.-D.,Northeastern University China
Kang T'ieh/Iron and Steel (Peking) | Year: 2010

The microstructural differences and mechanical properties of the tested steel rolled by ultra fast cooling process and traditional TMCP process were investigated by means of thermal simulation and laboratory hot rolling tests. It is demonstrated that condensate depression and nucleation rate increase with increasing cooling velocity and intracrystalline nucleation is main nucleation form of the new phase. Mechanical properties of the rolled plates in laboratory can exceed X90 grade because of the refining acicular ferrite, the dislocation with high density and the refining precipitation. Otherwise, the value of rolling force of high temperature process is lower than that of traditional TMCP process. Relaxation process makes mechanical properties of the tested plates worse because of grain growth coursing.


Sun B.,Shenyang University | Liu X.-J.,Shenyang Casting and Forging Industrial Co.
Dongbei Daxue Xuebao/Journal of Northeastern University | Year: 2014

The effect of microstructure of oxide scales on pickling of hot rolled strips was investigated by OM and SEM. The results showed that oxide scale at edge consisted of eutectoid and FeO. Scales in the quarter and centre of strip were almost FeO when coiling temperature was high. Scale was FeO mainly at low coiling temperature. The thickness of scale at high coiling temperature was larger than that at low temperature. The pickling time was shorter on hot-rolled strip at high coiling temperature. Therefore, reducing the thickness and transforming the microstructure of oxide scale could shorten pickling time and reduce acid amount. ©, 2014, Northeastern University. All right reserved.

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