Xian Aerospace Power Machine Factory

Fengcheng, China

Xian Aerospace Power Machine Factory

Fengcheng, China
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Fan Z.-B.,Xian Aerospace Power Machine Factory | Han D.,Xian Aerospace Power Machine Factory | Duan S.-C.,Xian Aerospace Power Machine Factory | Han J.-L.,China Aerospace Science and Technology Corporation | Chen M.,Hunan Reshine New Material Company Ltd
Jinshu Rechuli/Heat Treatment of Metals | Year: 2011

Influence of aging process on microstructure and mechanical properties of T250 maraging steel spinned was studied with metalloscope, TEM and mechanical property test. The results show that the preferable mechanical properties of T250 maraging steel spinned and solution treated can be obtained by aged at 510 °C for 3 h, the tensile strength and elongation can meet the technical requirement.


Hu C.,Xian Aerospace Power Machine Factory | Wang C.,Xian Aerospace Power Machine Factory | Qin Z.,Xian Aerospace Power Machine Factory | Zhang L.,Xian Aerospace Power Machine Factory | And 4 more authors.
Jinshu Rechuli/Heat Treatment of Metals | Year: 2016

The large finite element software was used to simulate welding process and several different heat treatment processes of large solid engine shell. The results show that stress of welded shell mainly concentrated near the fillet weld of cable bridge, and the stress magnitudes is at a high level. Annealing results show that with the increase of annealing temperature and the decrease of discharging temperature, the stress peak value of cable bridge fillet weld after annealing will reduce obviously, when the annealing holding temperature is 700-730℃ and the discharging temperature is 350-400℃, the residual stresses can be furthest reduced and the crack tendency can be decrease. © 2016, Editorial Office of "Jinshu Rechuli". All right reserved.


Zhang C.,Northwestern Polytechnical University | Mo R.,Northwestern Polytechnical University | Yang H.,Northwestern Polytechnical University | Wang X.,Xian Aerospace Power Machine Factory | Lu X.,Xian Aerospace Power Machine Factory
Applied Mechanics and Materials | Year: 2012

This article determines the main factors influencing the quality of ERTi-7 titanium wire through building AHP-PQ model: processing technology. under the circumstance of instable quality of ERTi-7 titanium wire in international market. Through the selection of raw material, feeding material evenly during melting, control of melting times and the determination of surface machining process, the inhomogeneity of chemical compositions of ERTi-7 and the corresponding removal method are studied. The results show that it is easier to obtain ingot with good surface and fine structure using triple melting without increasing the content of Pd element, and then going through non-oxidation roller-die drawing process, we will obtain qualified titanium wire with good surface and also conforming to the request of AWS A5.16/A5.16M:2007.


Gu C.-G.,Northwestern Polytechnical University | Zhan M.,Northwestern Polytechnical University | Yang H.,Northwestern Polytechnical University | Wu T.-C.,Northwestern Polytechnical University | Han D.,Xian Aerospace Power Machine Factory
Suxing Gongcheng Xuebao/Journal of Plasticity Engineering | Year: 2010

Wrinkling and over-thinning of wall thickness, known as common defects in deep-drawing of end closures, affect the forming quality and forming limit greatly. A three-dimensional (3D) finite element (FE) model for deep-drawing process of semi-ellipsoidal end closure was established and its reliability was validated. It was found that wrinkling and over-thinning always take place in suspended section, and the mechanism of defects was investigated, consequently the influencing law of process parameters on defects were analyzed. The results show that the area of suspended section which undergoes compressive stresses in both tangent and circumferential directions and the value of circumferential compressive stress have obvious effect on wrinkling, and the tangent tension stress has obvious effect on wall thickness. The possibility of wrinkling decreases with the increase of blank holder force (BHF) and friction coefficient, and with the decrease of the die radius, due to the decrease of the area of suspended section undertaking the biaxial compressive stress and the value of circumferential compressive stress. When the BHF or friction coefficient is too large, or the die radius is too small, excessive tangent tension stresses would result in the suspended section, so the wall thickness would reduce significently.


Han D.,Northwestern Polytechnical University | Yang H.,Xian Aerospace Power Machine Factory | Zhan M.,Northwestern Polytechnical University | Yang M.,Northwestern Polytechnical University | And 2 more authors.
Applied Mechanics and Materials | Year: 2012

In order to improve the limits of wall thickness reduction of 30CrMnSiA steel in process of spinning, realize multi-pass continuous spinning process, and furthermore improve the forming efficiency and shape accuracy of thin-walled shell of 30CrMnSiA steel in spinning process, the influence of traditional annealing and austenization plus spheroidal annealing on the structure performance of 30CrMnSiA steel and the spun performance of 30CrMnSiA steel are studied. Process parameters of traditional anneal and austenize plus spheroidal annealing are optimized to obtain higher plastic performance and lower ratio of yield strength to tensile strength. Spinning experiments of the workpieces that have been heattreated by the optimized traditional annealing process and austenization plus spheroidal process are completed. The result shows that the optimized austenization plus spheroidal annealing is beneficial to achieve a large thinning rate for flow spinning process, and can meet the demands of low cost and high efficiency of batch production. © (2012) Trans Tech Publications, Switzerland.


Han D.,Northwestern Polytechnical University | Yang H.,Northwestern Polytechnical University | Zhan M.,Northwestern Polytechnical University | Yang M.,Xian Aerospace Power Machine Factory | And 2 more authors.
Applied Mechanics and Materials | Year: 2012

In order to improve the limits of wall thickness reduction of 30CrMnSiA steel in process of spinning, realize multi-pass continuous spinning process, and furthermore improve the forming efficiency and shape accuracy of thin-walled shell of 30CrMnSiA steel in spinning process, the influence of traditional annealing and austenization plus spheroidal annealing on the structure performance of 30CrMnSiA steel and the spun performance of 30CrMnSiA steel are studied. Process parameters of traditional anneal and austenize plus spheroidal annealing are optimized to obtain higher plastic performance and lower ratio of yield strength to tensile strength. Spinning experiments of the workpieces that have been heattreated by the optimized traditional annealing process and austenization plus spheroidal process are completed. The result shows that the optimized austenization plus spheroidal annealing is beneficial to achieve a large thinning rate for flow spinning process, and can meet the demands of low cost and high efficiency of batch production. © (2012) Trans Tech Publications.


Zhang C.,Northwestern Polytechnical University | Yang H.-C.,Northwestern Polytechnical University | Han D.,Xian Aerospace Power Machine Factory | Wang X.-J.,China Aerospace Science and Technology Corporation | And 3 more authors.
Guti Huojian Jishu/Journal of Solid Rocket Technology | Year: 2013

The domestic theoretical research achievements of spin-forming titanium alloy were reviewed. Integrated with the features of high precision of titanium alloy spinning in the field of aerospace, the key factors affecting the spinning of titanium alloy parts were discussed, i. e. heating temperature, spinning process parameters, spinning tooling and lubrication methods. The application and development of titanium alloy spinning in the field of aerospace were forecasted, showing that the low-cost spinning for complex profile parts is the trend.

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