Research on the power spinning method of large high-strength cylindrical parts

2019 ◽  
Vol 104 (1-4) ◽  
pp. 1005-1016 ◽  
Author(s):  
Yaming Guo ◽  
Mingzhe Li ◽  
Dali Wang ◽  
Tao Huang ◽  
Hongwei Zheng ◽  
...  
Keyword(s):  
High Strength ◽  
Power Spinning ◽  
Cylindrical Parts

Research on the microstructure evolution of Ni-based superalloy cylindrical parts during hot power spinning

2019 ◽  
Vol 7 (1) ◽  
pp. 52-63 ◽  
Author(s):  
Qin-Xiang Xia ◽  
Jin-Chuan Long ◽  
Ning-Yuan Zhu ◽  
Gang-Feng Xiao
Keyword(s):  
Microstructure Evolution ◽  
Power Spinning ◽  
Cylindrical Parts

Research on the Blank Selection in the Power Spinning Process of Parts with Transverse Inner Rib

2007 ◽  
Vol 561-565 ◽  
pp. 885-888 ◽  
Author(s):  
Fei Ma ◽  
He Yang ◽  
Mei Zhan
Keyword(s):  
Cone Angle ◽  
High Strength ◽  
Forming Limit ◽  
Fe Model ◽  
Military Industry ◽  
Power Spinning ◽  
Forming Technology ◽  
Spinning Process ◽  
Increasing Demand ◽  
Half Cone

The advent of high-strength and high-precision thin-walled parts with inner ribs adapts to the increasing demand of aerospace industry, astronautics industry, military industry, and so on. For a new metal forming technology, how to determine the reasonable blank is a key problem required solved firstly in the research of power spinning process of parts with transverse inner rib. In this paper, based on the platform ABAQUS/Explicit, a reasonable 3D FE model for power spinning of parts with transverse inner rib has been established, the power spinning process of parts with transverse inner rib has been simulated under conditions of four typical blanks and the reasonable blanks for different forming processes have been obtained. The results show the following:(1) Blank with equal half-cone angle is the best selection to deform workpiece with proper height rib; (2) while for the workpiece with excessive height rib which exceed the forming limit, blank with rib is the exclusive selection, although it is difficult to be prepared comparing with non-rib blank.

Research on the grain refinement method of cylindrical parts by power spinning

2014 ◽  
Vol 78 (5-8) ◽  
pp. 971-979 ◽  
Author(s):  
Gangfeng Xiao ◽  
Qinxiang Xia ◽  
Xiuquan Cheng ◽  
Yujing Zhou
Keyword(s):  
Grain Refinement ◽  
Power Spinning ◽  
Refinement Method ◽  
Cylindrical Parts

scholarly journals Research on Formation Conditions of the Ultrafine-Grained Structure of the Cylindrical Parts Manufactured by Power Spinning Based on Small Strains

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1891 ◽  
Author(s):  
Gangfeng Xiao ◽  
Qinxiang Xia ◽  
Xiuquan Cheng ◽  
Weiping Chen
Keyword(s):  
Dislocation Density ◽  
Lath Martensite ◽  
Recrystallization Annealing ◽  
Second Phase ◽  
Power Spinning ◽  
Small Strains ◽  
Ultrafine Grained ◽  
Cylindrical Parts ◽  
Formation Conditions ◽  
Storage Energy

Two different methods, power spinning and annealing (PSA), quenching and power spinning followed by annealing (QPSA), for manufacturing the cylindrical parts with ultrafine-grained (UFG) structure were reviewed, the dislocation density and microstructural evolution during the two different processes of PSA and QPSA were further studied. The results show that the required strains for obtaining the UFG structure by power spinning is only 0.92 when the initial microstructure of the material is in the phase of lath martensite. The dislocation density and storage energy are increased to 10 times that of the blank after quenching and power spinning and decreased to the level of the blank after recrystallization annealing. Microstructures with fine grain size after quenching, storage energy of 1.8 × 105 kJ/m3 obtained after power spinning and second phase particle with nano-scale precipitated during annealing are the necessary formation conditions for manufacturing the cylindrical parts with UFG structure based on small strains. Compared with the original tubular blank, the mechanical properties of the spun parts with UFG structure improves significantly. The tensile strength and hardness of the spun parts manufactured by QPSA method is 815 MPa and 305 HV, respectively, and the elongation is 17.5%.

The Research on Friction Impacting on Drawing High-Strength Steel

2011 ◽  
Vol 189-193 ◽  
pp. 1858-1861
Author(s):  
Zhong Jin Wang ◽  
Jian Wei Wang ◽  
Yu Wei Shen
Keyword(s):  
Friction Coefficient ◽  
High Strength Steel ◽  
Thickness Distribution ◽  
High Strength ◽  
Simulation Software ◽  
Friction Condition ◽  
Drawing Process ◽  
Element Simulation ◽  
Cylindrical Parts ◽  
Cylindrical Cup

The paper’s main content is that simulating the process—drawing the high-strength steel-DP500 which is used on automobile to the cylindrical cup through the commercial finite element simulation software—Dynaform. Through the simulation, the author analyzes the effect that friction impacts on drawing high-strength steel. The result is that: if the friction coefficient between the blank and the die declines, it can significantly improve the uniform of the blank’s thickness distribution; it can enlarge the processing range of DP500 steel through decreasing the friction coefficient; the springback is sensitive to the change of the friction condition. Generally speaking, in drawing process, improving the friction coefficient is very important to increase the drawing performance of the cylindrical parts.

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

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