The Optimization Design Study of Warm Extrusion Forming Technology for Piston Head Semi-Processed

2013 ◽  
Vol 803 ◽  
pp. 375-378 ◽  
Author(s):  
Qing Qing Lv ◽  
Qi Ming Guan ◽  
Li Quan Yang ◽  
Xi Kui Wang
Keyword(s):  
High Performance ◽  
Optimization Design ◽  
Orthogonal Experiment ◽  
Range Analysis ◽  
Forming Process ◽  
Molding Method ◽  
Piston Head ◽  
Forming Technology ◽  
Extrusion Forming ◽  
Warm Extrusion

Aiming at the problems of high performance piston head can not produced by using casting and hot die forging, the warm extrusion molding method is proposed, based on the analysis of factors influencing for forming, rational scheme of orthogonal experiment was designed, a series of analysis for simulation results by using the range analysis method and comprehensive balance method, the optimal forming process parameters combination are identified, the optimal result are verified by the DEFORM software.

Research and Application of Warm Extrusion Forming Technology for Internal Combustion Engine Piston Head

2013 ◽  
Vol 706-708 ◽  
pp. 452-455
Author(s):  
Li Quan Yang ◽  
Qing Qing Lv ◽  
Lei Zhao
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Production Equipment ◽  
Forming Process ◽  
Piston Head ◽  
Forming Technology ◽  
Engine Piston ◽  
Extrusion Forming ◽  
Warm Extrusion

In order to improve the performance of the piston head on the existing conditions, and the warm extrusion forming technology was put forward based on the internal combustion engine piston head traditional production process. The warm extrusion process scheme and finite element boundary conditions was designed reasonable based on research the piston head forming process, the thermal-mechanical coupling model was established. The numerical simulation of the warm extrusion forming was carried out on the DEFORM software platform. The distributions of warm extrusion forming process strain field, stress field and temperature field were forecasted through the theoretical calculation and simulation. And the production equipment tonnage and die structure form were determined preliminarily. The possible problems of forming process were discussed, and the countermeasures were also put forward, provide the reliable reference for internal combustion engine piston head forming process improvement.

Structural Optimization Design on the Sunflower Shaped Arch Bridge

2013 ◽  
Vol 427-429 ◽  
pp. 90-93 ◽  
Author(s):  
Wen Qing Wang
Keyword(s):  
Optimization Design ◽  
Mechanical Response ◽  
Mechanical Performance ◽  
Orthogonal Experiment ◽  
Design Parameters ◽  
Analysis Model ◽  
Range Analysis ◽  
Element Analysis ◽  
Arch Bridge ◽  
Four Levels

Based on the principle of orthogonal test, the optimization model of sunflower shaped arch bridge scheme was set up. The five key design parameters were selected as the main factors. The four computation index, which reflect mechanical performance, were selected as analytical objects. The 16 orthogonal experiment schemes were arranged with four levels orthogonal table . The curves of the factors to the index were obtained from the mechanical response under dead load and live load through the finite element analysis model. By the range analysis method, the influential levels of the factors to the index were obtained from the result of the test , and the factor optimizatuion level of the factors was determined to further optimize the layout scheme of the sunfloawer shaped arch bridge.

Honeycomb Radiator Cold Extrusion Forming Research

2013 ◽  
Vol 753-755 ◽  
pp. 149-154
Author(s):  
Sheng Guan Qu ◽  
Li Kui Liu ◽  
Wen Long Li ◽  
Guang Hong Wang ◽  
Xiao Qiang Li
Keyword(s):  
Thermal Performance ◽  
Crucial Role ◽  
Flow Condition ◽  
Optimization Design ◽  
Strain State ◽  
Cold Extrusion ◽  
Forming Process ◽  
Stress Strain ◽  
Die Structure ◽  
Extrusion Forming

Radiators plays a crucial role in thermal performance of LED Lamp, and the latest development of LED honeycomb radiator forming process has been discussed. Moreover, stress-strain state in the dies and blank flow condition with different die structures have been studied by DEFORM. Accordingly the feasibility of the optimization design also has been demonstrated. The results show that the substance flowing has a serious affect on the force to the die. And with an appropriate die structure, the uniformity of forming can be greatly improved and the force to the die can be reduced.

Research on Forming Technology of Thermoplastic Composite Blade for Wind Turbine

2013 ◽  
Vol 328 ◽  
pp. 139-143
Author(s):  
Hai Tang Cen ◽  
Xiao Liang Wang ◽  
Zhi Yong Hu
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
High Performance ◽  
Wind Turbine Blade ◽  
Thermoplastic Composite ◽  
Deformation Model ◽  
Thermoplastic Resin ◽  
Forming Process ◽  
Composite Blade ◽  
Forming Technology

Thermoplastic composite has become preferred material for wind turbine blade with high performance, low cost and greenization. The fused mass of the thermoplastic resin has high viscosity and the forming of the thermoplastic composite materials is laborious, quality is not readily guaranteed, thus, the widespread use of thermoplastic composite blades for wind turbine is restricted. Based on the analysis of all kinds of the characteristics of thermoplastic forming technology, the paper has points out that the diaphragm forming is especially suitable for making a hyperboloid, variable thickness, large size wind turbine thermoplastic composite blade structure. The key to improving the forming quality and the efficiency of the thermoplastic blade forming is to establish finite element deformation model of a diaphragm forming process, to effectively control the process parameters such as temperature, pressure, forming rate. Conducting research on thermoplastic blade diaphragm forming technology lay the foundation for the industrialization of thermoplastic wind turbine blade.

scholarly journals Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1461 ◽  
Author(s):  
Yongchun Cheng ◽  
Liding Li ◽  
Peilei Zhou ◽  
Yuwei Zhang ◽  
Hanbing Liu
Keyword(s):  
Optimization Design ◽  
Orthogonal Experiment ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Asphalt Mixtures ◽  
Orthogonal Experimental Design ◽  
Basalt Fibers ◽  
Contributing Factors ◽  
Range Analysis ◽  
Four Levels

This study focuses on improving the performance of asphalt mixture at low- and high- temperature and analyzing the effect of diatomite and basalt fiber on the performance of the asphalt mixture. Based on the L16(45) orthogonal experimental design (OED), the content of diatomite (D) and basalt fiber (B) and the asphalt-aggregate (A) ratio were selected as contributing factors, and each contributing factor corresponded to four levels. Bulk volume density (γf), volume of air voids (VV), voids filled with asphalt (VFA), Marshall stability (MS) and splitting strength at −10 °C (Sb) were taken as the evaluation indexes. According to the results of the orthogonal experiment, the range analysis and variance analysis were used to study the effect of the diatomite content, basalt fiber content and asphalt-aggregate ratio on the performance of the asphalt mixture, and the grey correlation grade analysis (GCGA) was used to obtain the optimal mixing scheme. Furthermore, the performance tests were conducted to evaluate the performance improvement of asphalt mixtures with diatomite and basalt fibers, and the scanning electron microscopy (SEM) tests were carried out to analyze the mechanism of diatomite and basalt fibers in asphalt mixtures. The results revealed that the addition of diatomite and basalt fiber can significantly increase the VV of asphalt mixture, and reduce γf and VFA; the optimal performance of the asphalt mixture at high- and low-temperature are achieved with 14% diatomite, 0.32% basalt fibers and 5.45% asphalt-aggregate ratio. Moreover, the porous structure of diatomite and the overlapping network of basalt fibers are the main reasons for improving the performance of asphalt mixture.

The Optimization Method of Tailor Welded Blank Forming Process Based on Numerical Simulation

2014 ◽  
Vol 721 ◽  
pp. 135-139 ◽  
Author(s):  
Yong Gan ◽  
Jia Xing Li ◽  
Yang Chen ◽  
Hong Zhao Li
Keyword(s):  
Numerical Simulation ◽  
Optimization Design ◽  
Orthogonal Experiment ◽  
Frictional Coefficient ◽  
Optimization Method ◽  
Parameters Optimization ◽  
Forming Process ◽  
Forming Parameters ◽  
Tailor Welded Blank ◽  
Optimization Schemes

The tailor welded blank stamping is a complicated process with numerous forming parameters, so it is difficult to determine the relationship between the forming parameters and the formability. The TWBs forming is numerically simulated by an orthogonal experiment design while the thickness ratio, blank holder force and frictional coefficient are forming parameters, and the maximum thickness thinning and the maximum weld movement are index. The influencing degree of forming parameters on the index and the optimal combination of forming parameters are analyzed. The optimization design is used to carry out numerical simulation and verification which can effectively improve stamping formability of TWBs. The simulation results also show that optimization schemes can offer the reference for the forming parameters optimization of the TWBs.

Numerical Simulation Optimization Research of Cold Extrusion Forming for Injection Head

2013 ◽  
Vol 706-708 ◽  
pp. 444-447
Author(s):  
Qing Qing Lv ◽  
Li Quan Yang ◽  
Xiu Ting Lv ◽  
Lei Zhao ◽  
Xi Kui Wang
Keyword(s):  
Numerical Simulation ◽  
Treatment Process ◽  
Cold Extrusion ◽  
Finite Element Models ◽  
Forming Process ◽  
Backward Extrusion ◽  
Forward Extrusion ◽  
Forming Technology ◽  
Pre Treatment ◽  
Extrusion Forming

In order to obtain high-quality injection head, cold extrusion forming is adopted. Based on the study of forming technology for the injection head, reasonable process flow, cold extrusion pre-treatment process and boundary conditions are designed. Two finite element models in forward extrusion and backward extrusion forming ways are established. Taking DEFORM as the platform, the numerical simulation of forming process is carried out. Through simulation, the distribution of strain field, stress field and velocity field in the process of cold extrusion forming is preliminarily forecast, the merits and defects of two kinds of forming processes and the force state of mold are compared , the optimal forming scheme is determined.

Research of Die Cavity Warm Extrusion on 3Cr2W8V Steel One-Off Forming Technology

2011 ◽  
Vol 418-420 ◽  
pp. 1270-1273
Author(s):  
Wei Du ◽  
Guo Sen Yuan ◽  
Cheng Bin Li
Keyword(s):  
Service Life ◽  
Structure Parameters ◽  
Extrusion Die ◽  
Forming Technology ◽  
Forming Parameters ◽  
Die Forging ◽  
Die Structure ◽  
Extrusion Forming ◽  
Forging Die ◽  
Warm Extrusion

The problems of 3Cr2W8V steel concave die forging production must be solved, such as too many procedures, high cost and mold crack. Through the use of a warm extrusion forming method it could make one-off forming die cavity come true, more practical warm extrusion forming parameters and extrusion die structure parameters were obtained. A suitable lubricant was selected out so that the processed forging die organization was improved and forging streamline distribution was more rational. The service life of forging die increased, and warm extrusion forming technology was applied in the mold production.

The Application of Micro-Flow Extrusion Forming Technology in the Denture Preparation

2015 ◽  
Vol 645-646 ◽  
pp. 1351-1356 ◽  
Author(s):  
Jing Zhou ◽  
Guo Lin Duan ◽  
Dong Bin Zhu ◽  
Jin Cai
Keyword(s):  
Health Care ◽  
Internal Flow ◽  
Ceramic Materials ◽  
Forming Process ◽  
Extrusion Head ◽  
Forming Technology ◽  
Ceramic Slurry ◽  
Plastic Fluid ◽  
Micro Flow ◽  
Extrusion Forming

The forming process of denture preparation based micro-flow extrusion was researched. The dental ceramic materials having health care function was preparation. Through analysis and calculation, the rheological properties of the ceramic slurry confirmed to be pseudo-plastic fluid . The extrusion head as a key part was designed. The pressure distribution and velocity distribution of the internal flow field of extrusion head were simulated by using START-CD software ,the analysis result can used to guide the optimal design of extrusion head.

Investigation of metal extrusion forming through steadily rotating container

2011 ◽  
Vol 225 (12) ◽  
pp. 2927-2937 ◽  
Author(s):  
F Li ◽  
G N Chu ◽  
E L Liu ◽  
R Z Wu ◽  
X L Zhang
Keyword(s):  
Plastic Material ◽  
Dead Zone ◽  
High Energy ◽  
Forming Process ◽  
Forming Technology ◽  
Rotation Extrusion ◽  
Study Results ◽  
Material Utilization ◽  
Metal Extrusion ◽  
Extrusion Forming

To deal with the problems of high energy consumption and low material utilization in low plastic alloy extrusion, a new forming technology – container rotation extrusion – is proposed, and the die structure is also designed. Compared with the die rotation extrusion, which is only suitable for circular section parts, container rotation extrusion can solve the problem of axial ‘cut off’ caused by odd-shaped section product extrusion. The study results show that, in comparison to conventional extrusion, plastic zone expands obviously during forming process and the forming load decreases by 42.1%. What is more, during container rotation extrusion, ‘dead zone’ is disappeared. Consequently, this technology can form both complex cross-section and low plastic material products to achieve ‘small equipment does large workpiece’.

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