Investigation and Application of Cold Extrusion Forming Process in Die Structure Design of Plug Extremity

2010 ◽  
Vol 34-35 ◽  
pp. 888-892
Author(s):  
Zhi Qiang Jiang ◽  
Xi Lan Feng ◽  
Xian Zhang Feng
Keyword(s):  
Production Efficiency ◽  
Structure Design ◽  
Cold Extrusion ◽  
Manufacturing Cost ◽  
Process Technology ◽  
Forming Process ◽  
Key Technology ◽  
Die Structure ◽  
Technological Data ◽  
Extrusion Forming

a cold extrusion forming process in die structure of plug extremity is analyzed in this paper, its technological data on the tooling structure design of plug extremity are discussed, and the die architecture design and key technology in the automatic extrusion machine for plug extremity with cold extrusion forming approach were accomplished. This plug extremity equipment developed with cold extrusion forming process technology can not only achieved the process of delivering material, extruding forming and cutting-off material in automatically, but also enhanced the rigidity and intension at two ends of plug. The production efficiency and the material used ratio were increased greatly, the manufacturing cost was decreased obviously, and the plug quality with cold extrusion forming method was ensured.

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.

Study of Extrusion Process for a Titanium Alloy Tapered Piece

2011 ◽  
Vol 228-229 ◽  
pp. 723-726
Author(s):  
Mu Meng ◽  
Zhi Min Zhang ◽  
Bao Hong Zhang
Keyword(s):  
Titanium Alloy ◽  
Energy Consumption ◽  
Production Efficiency ◽  
Maximum Load ◽  
Extrusion Process ◽  
Forming Process ◽  
Two Stage ◽  
Direct Extrusion ◽  
Die Life ◽  
Extrusion Forming

Direct extrusion forming process, two-stage extrusion forming process and composite extrusion forming process were designed for manufacturing a titanium alloy tapered piece. Comparison of the forming loads under the different processes were investigated using Deform finite element method(FEM).Considering the load size, energy consumption and production efficiency, the best extrusion forming process was eventually selected. The result showed that: In the direct extrusion forming process, the maximum load was 11.5MN, and the die life was short; In the two-stage extrusion forming process, the maximum load was only 4.25MN, but it had a poorer effectiveness and higher energy consumption because of two-stage forming processes. In the composite extrusion forming process, the maximum load was only 38.6% of direct forming process, and it had a higher effectiveness and lower energy consumption because of one-stage forming processes.

Numerical Simulation for Cold Extrusion of Bevel Gear

2012 ◽  
Vol 497 ◽  
pp. 356-364
Author(s):  
Qing Hua Yang ◽  
Jun Pan ◽  
Jun Xiong Zhang ◽  
Wen Biao Chen ◽  
Bin Meng
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Bevel Gear ◽  
Basic Knowledge ◽  
Cold Extrusion ◽  
Forming Process ◽  
Load Curve ◽  
Extrusion Forming ◽  
3D Software ◽  
Deform 3D

A three-layers assembled cavity die and its technological measures were designed for cold extrusion forming for the bevel gear. Numerical simulation of the cold extrusion forming process was applied using Deform-3D software, load curve, velocity field, stress field and temperature field were analyzed, thus obtain the basic knowledge of the law of the bevel gear deformation. Subsequent targets for optimization were introduced, aiming to solve the remaining problems of the current cold extrusion forming. The accomplished work shows some significance in guiding how to design a die and its technological measures.

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.

Numerical Simulation on Conform Process of Aluminum Alloy Rectangular Hollow Conductor

2007 ◽  
Vol 546-549 ◽  
pp. 735-740
Author(s):  
Peng Yue Wu ◽  
Yu Cai Wu ◽  
Shui Sheng Xie ◽  
Guo Jie Huang ◽  
Lei Cheng
Keyword(s):  
Aluminum Alloy ◽  
Three Dimensional ◽  
Processing Parameters ◽  
Forming Process ◽  
Die Structure ◽  
Die Materials ◽  
Dimensional Finite Element ◽  
Conform Process ◽  
Three Dimensional Finite Element ◽  
Extrusion Forming

In the investigation, the continuous extrusion forming (CONFORM) process of aluminum alloy rectangular hollow conductor has been studied by three-dimensional finite-element method based on Software DEFORM-3D. The rigid-viscoplastic constitutive equation was employed in the model. Distributions of velocity field, strain field, stress field and temperature field were obtained in the forming process. The results will give effective guidelines to optimize the processing parameters and to select, the die structure and die materials.

scholarly journals Numerical Simulation and Experimental Study on Rotary Cold Extrusion Forming of Screw Rod

2021 ◽  
Vol 2101 (1) ◽  
pp. 012017
Author(s):  
Peiai Li ◽  
Baoyu Wang ◽  
Jiapeng Wang
Keyword(s):  
Wall Thickness ◽  
Extrusion Process ◽  
Simulation Software ◽  
Cold Extrusion ◽  
Extrusion Force ◽  
Forming Process ◽  
Material Loss ◽  
Screw Pump ◽  
Plastic Forming ◽  
Extrusion Forming

Abstract The rotary cold extrusion forming process is a plastic forming process with very low material loss, especially in the production of hollow screw rods with equal wall thickness. In this work, the rotary cold extrusion forming process of a hollow T2 copper screw rod with a wall thickness of 4 mm and solid T2 copper screw rod was verified by experimental method. The finite element simulation software Deform-3D was also used to simulate the rotary cold extrusion forming process of the screw rod. The effects of the die with different heights of the working belt and the different wall thickness of the billet on the eccentricity, extrusion force, and forming torque in the forming process of the screw rod were studied. The results show that it is feasible to process hollow and solid T2 copper screw rods with equal wall thickness by rotary cold extrusion. With the increase of die working belt height, the eccentricity of the screw rod becomes smaller and closer to the ideal eccentricity. With the increase of the wall thickness of the billet, the amplitude fluctuation range of the eccentricity of the screw rod gradually decreases. The higher the height of the die working belt, the greater the extrusion force and torque required in the extrusion process, and the more intense the change of torque. These results also provide theoretical guidance for the production practice and lightweight transformation of the screw pump rotor.

Cold Extrusion Forming of Copper/Aluminum Clad Composite

2009 ◽  
Vol 16-19 ◽  
pp. 441-444 ◽  
Author(s):  
Jun Ting Luo ◽  
Yan Xu ◽  
Shuang Jing Zhao
Keyword(s):  
Finite Element Method ◽  
Experimental Investigation ◽  
Extrusion Ratio ◽  
Cold Extrusion ◽  
Pressure Casting ◽  
The Finite Element Method ◽  
Forming Process ◽  
Low Pressure Casting ◽  
Copper Aluminum ◽  
Extrusion Forming

The cold extrusion forming of copper/aluminum clad composite based on the low pressure casting billet is presented in this paper. The technology was studied by using the experimental investigation and the finite element method. The drop-in phenomenon occurred in aluminum during the extrusion forming process. The product will be having good quality when the extrusion ratio is 5.45 and the extrusion modular angle is 30°. The crack appeared on the head of product when the extrusion ratio and extrusion angle is large than the aforementioned values.

The Stress Finite Element Analysis of Die-Holes in Biomass Flat Die Briquetting Process

2013 ◽  
Vol 291-294 ◽  
pp. 335-339
Author(s):  
De Yu Tu ◽  
Xu Wang ◽  
Ai Hua Xu ◽  
Xin Chen ◽  
Yun Hu
Keyword(s):  
Finite Element ◽  
Energy Consumption ◽  
Production Efficiency ◽  
Diameter Ratio ◽  
Manufacturing Cost ◽  
Corn Straw ◽  
Forming Process ◽  
Taper Angle ◽  
Inlet Angle ◽  
Length To Diameter Ratio

Biomass briquetting technology is one of the key technologies in the utilization of biomass energy. In this paper, the mechanical characteristics of the die holes were analyzed to set up mathematical model in the briquettes forming process. The effects of the three key structure parameters, which include the inlet angle, forming taper angle and length-diameter ratio, were carried out by using the finite element software. The results indicated that the die hole with forming taper is easy to form back pressure, and the higher taper angle, the greater equivalent stress value is found in the corresponding parts, which is helpful for forming process. Combined with processing cost, energy consumption and wear analysis, the die hole forming taper should not be too big. For the corn straw, it can satisfy the molding pressure requirements to take 2° forming taper. The parameter of inlet angle main influences material grabbing, production efficiency and flat die manufacturing cost. For the corn straw, the inlet angle between 40° and 50° of die hole is not only beneficial to material grabbing and forming, but also can control flat die manufacturing cost and guarantee a certain production efficiency. Length to diameter ratio main influences the stress distribution in shape-preserving section and reflects the compressed extent of the material. Combined with energy consumption analysis, length to diameter ratio between 4:1 and 5:1 can guarantee the corn straw forming requirements. The above numerical simulation method and results can provide some reference for the flat die structure design and parameter optimization.

scholarly journals A Covering and protection Type Porthole Die For Semi-Hollow Al-Profiles

2021 ◽  
Vol 2076 (1) ◽  
pp. 012064
Author(s):  
Peng Yun ◽  
Haohua Fu ◽  
Chuhao Zhou ◽  
Rurong Deng
Keyword(s):  
Surface Brightness ◽  
Production Efficiency ◽  
Structure Design ◽  
Actual Case ◽  
Porthole Die ◽  
Die Life ◽  
Die Structure ◽  
The Cost ◽  
Selection Of

Abstract A new structure named covering type for the semi-hollow Al-profiles was present. through a common actual case, the determination of structure parameters was introduced in detail. Mainly including the arrangement of portholes, the structure design of chamber and the selection of bearing. The method of checking the die strength was introduced. According to the extrusion results, the structure of the traditional solid die and the covering type structure were compared. The characteristics of the latter structure were simple and easy to process. The practical application shows that the new die structure can enhance the die life, improve the production efficiency and reduce the cost. The high precision and the surface brightness of the profiles were obtained. The structure is worth promoting. The aim is to provide reliable data and reference for the further research and development on the structure for semi-hollow Al-profiles.

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