Hot Forming Process

2012 ◽  
pp. 35-45 ◽  
Author(s):  
Ping Hu ◽  
Ning Ma ◽  
Li-zhong Liu ◽  
Yi-Guo Zhu
Keyword(s):  
Hot Forming ◽  
Forming Process

Microstructure and deformation behavior of Ti-10V-2Fe-3Al alloy during hot forming process

2015 ◽  
Vol 30 (6) ◽  
pp. 1332-1337
Author(s):  
Renguo Guan ◽  
Zhanyong Zhao ◽  
KS Choi ◽  
CS Lee
Keyword(s):  
Deformation Behavior ◽  
Hot Forming ◽  
Forming Process

High-Strength Steel Hot Forming Mechanics Performance and Characteristic Experimental Study

2016 ◽  
Vol 693 ◽  
pp. 800-806
Author(s):  
You Dan Guo
Keyword(s):  
Yield Strength ◽  
High Strength Steel ◽  
High Strength ◽  
High Energy ◽  
Absorption Capacity ◽  
Hot Forming ◽  
Gas Content ◽  
Strength Increase ◽  
Gradual Change ◽  
Forming Process

In high-strength steel hot forming, under the heating and quenching interaction, the material is oxidized and de-carbonized in the surface layer, forming a gradual change microstructure composed of ferrite, ferrite and martensite mixture and full martensite layers from surface to interior. The experiment enunciation: Form the table to ferrite, ferrite and martensite hybrid organization, completely martensite gradual change microstructure,and make the strength and rigidity of material one by one in order lower from inside to surface, ductility one by one in order increment in 22MnB5 for hot forming;Changes depends on the hot forming process temperature and the control of reheating furnace gas content protection, when oxygen levels of 5% protective gas, can better prevent oxidation and decarburization;Boron segregation in the grain boundary, solid solution strengthening, is a major cause of strength increase in ;The gradual change microstructure in outer big elongation properties, make the structure of the peak force is relatively flat, to reduce the peak impact force of structure, keep the structure of high energy absorption capacity;With lower temperature, the material yield strength rise rapidly,when the temperature is 650 °C, the yield strength at 950 °C was more than 3 times as much.

scholarly journals Automated fabrication of hybrid thermoplastic prepreg material to be processed by In-Situ Consolidation Automated Fiber Placement process

2018 ◽  
Vol 188 ◽  
pp. 01024
Author(s):  
Vincenzo Iannone ◽  
Marco Barile ◽  
Leonardo Lecce
Keyword(s):  
Carbon Fiber ◽  
Hot Forming ◽  
Framework Programme ◽  
Thermal Cycles ◽  
Forming Process ◽  
High Performing ◽  
Fiber Placement ◽  
Research And Innovation ◽  
Automated Fiber Placement

This work deals with the fabrication of an innovative hybrid thermoplastic prepreg by continuous hot forming process. The material, suitable also for Automated Fiber Placement process, is produced through a consolidation of commercial PEEK-Carbon Fiber prepreg sandwiched between two amorphous PEI films. Consolidation is performed by a purpose-designed automated prototype equipment operating on defined pressure and thermal cycles. Then preliminary tests on first trials produced were carried out. These activities have been developed in the frame of the NHYTE project, a Research and Innovation Action funded by the European Union's H2020 framework programme, under Grant Agreement No 723309 NOVOTECH acting as Coordinator presents this paper on behalf of all Partners of the project. The proof of NHYTE project concept is the manufacturing of a fastener free and high performing fuselage portion demonstrator.

Research on Synchronized Cooling Hot Forming Process of 6016 Aluminum Alloy

2012 ◽  
Vol 452-453 ◽  
pp. 81-85
Author(s):  
M.H. Chen ◽  
Y.Y. Cao ◽  
W. Chen ◽  
G.L. Chen
Keyword(s):  
Aluminum Alloy ◽  
Hot Forming ◽  
Forming Process ◽  
6016 Aluminum Alloy

Simulation and Experimental Study on Particularly Thick Patch Hot Forming Process

2018 ◽  
Author(s):  
Y. B. Li ◽  
H. Y. Feng ◽  
B. Q. An ◽  
S. Y. Chu ◽  
X. L. Yu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hot Forming ◽  
Forming Process

Hot forming with a nonuniform temperature field using die partition cooling

2019 ◽  
Vol 116 (6) ◽  
pp. 613
Author(s):  
Cai-yi Liu ◽  
Yan Peng ◽  
Ling Kong ◽  
Lu-han Hao ◽  
Ren Zhai
Keyword(s):  
Temperature Field ◽  
Material Properties ◽  
High Strength ◽  
Strengthening Mechanism ◽  
Hot Forming ◽  
Nonuniform Temperature ◽  
Forming Process ◽  
Gradient Distribution ◽  
Forming Technology ◽  
Nonuniform Temperature Field

High strength steel hot forming technology plays an important role in achieving lightweight vehicles, improving the safety of vehicles. The tensile strength of the blank formed by traditional hot forming process is as high as 1500–2000 MPa, the strength of the formed blank is high, but the elongation is usually low and comprehensive mechanical property is not high. In this article, the process control of material gradient properties hot forming technology is summarized through the analysis of strengthening mechanism of gradient distribution hot forming technology. Based on the traditional hot forming technology, a new hot forming technology based on partition cooling to achieve material property gradient distribution is proposed. By changing the cooling rate of blank in different zones is different, and the gradient distribution of material properties is finally obtained. The DEFORM is used to analyze the hot forming process of the blank under the nonuniform temperature field of the partition cooling. A set of partition cooling hot forming die was designed independently to verify the experimental results. The evolution mechanism of microstructure and its effect on material properties during hot forming under nonuniform temperature field with partition cooling were revealed.

Influences of Mould’s Shape on Heat Transfer in Hot Forming Process

2012 ◽  
Vol 503-504 ◽  
pp. 198-201
Author(s):  
Kong Lian Xu ◽  
Zan Wu Tan ◽  
Su Yun Hu
Keyword(s):  
Heat Transfer ◽  
Mass Production ◽  
Hot Forming ◽  
Promising Technique ◽  
Forming Process ◽  
Cooling Effectiveness ◽  
Heating And Cooling ◽  
Element Simulation ◽  
Ultra Precision ◽  
Manufacture Industry

Ultra-precision mould is widely used as the most important material in hot forming manufacture industry in recent years. Hot forming process has been employed as a promising technique to manufacture small size components in mass production. In this paper, an effective method of improving the heating or the cooling effectiveness is to increase the area exposed to the cold or hot nitrogen by means of adding slots. In the same condition, four models with different slots were built. Based on the theoretical analysis of glass heating and cooling property in the forming process, finite element simulation was carried out. The results showed that the model with slots may decrease the heating and cooling time

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