Direct Quench Steel for Forged Parts

2021 ◽  
Author(s):  
F.X. Hoche ◽  
◽  
D. Forgeoux ◽  
Keyword(s):  
Forged Parts ◽  
Direct Quench

Weight Reduction of the Automotive Body by using Three-Dimensional Hot Bending and Direct Quench (3DQ) Technology

2015 ◽  
Vol 84 (7) ◽  
pp. 514-518
Author(s):  
Ryuji HAMADA ◽  
Hiroki FUJIMOTO ◽  
Masahiro OGAWA ◽  
Naoaki SHIMADA
Keyword(s):  
Weight Reduction ◽  
Three Dimensional ◽  
Automotive Body ◽  
Direct Quench

Metallurgical Evolutions in Hot Forging of Dual Phase Titanium Alloys: Numerical Simulation and Experiments

2015 ◽  
Vol 651-653 ◽  
pp. 225-230 ◽  
Author(s):  
Antonino Ducato ◽  
Gianluca Buffa ◽  
Antonello Astarita ◽  
Antonino Squillace ◽  
Livan Fratini ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Titanium Alloys ◽  
Case Studies ◽  
Hot Forging ◽  
Fe Model ◽  
Dual Phase ◽  
Model Output ◽  
Forged Parts ◽  
Set Up

Titanium forging has been encountering a growing interest in the scientific and industrial communities because of the distinct advantages it provides with respect to machining, in terms of both mechanical properties of the product and material waste, thus significantly reducing the Buy to Fly ratio. In the paper, a numerical FE model, based on a tri-coupled approach and able to predict the microstructural evolutions of the workpiece during the process, is developed and set up. Calculated results are compared to experiments for a few industrial case studies. The final phases distribution in the forged parts is experimentally measured and compared to the FE model output finding satisfying overlapping.

scholarly journals Closed Die Forging of Mg-Al-Zn-Ca-Y Alloys

2018 ◽  
Vol 918 ◽  
pp. 28-33 ◽  
Author(s):  
Nikolaus Papenberg ◽  
Stefan Gneiger
Keyword(s):  
Mechanical Properties ◽  
Oxidation Behaviour ◽  
Automotive Applications ◽  
Forging Process ◽  
Weight Saving ◽  
Closed Die Forging ◽  
Forged Parts ◽  
Superior Mechanical Properties ◽  
Low Mass ◽  
Materials Used

In light of emission reduction and weight saving in transport applications, Mg parts gain alot attention due to their good specific mechanical properties and their low mass. While casting is themain process for manufacturing Mg parts for automotive applications, forged parts show some majorbenefits like superior mechanical properties and absence of porosity. In this work a comparison ofclosed die forged parts made from different Mg-alloys has been carried out. The materials used in thewarm forging process were AZ31 and various Mg-Al-Zn-Ca-Y type (AZXW) alloys. Ca additions areknown to improve the oxidation behaviour and the formability of magnesium alloys, while yttrium isused to enhance the flammability resistance of forged parts. The forgeability, mechanical propertiesand microstructure are analyzed and compared in the present paper.

The Validation of Microstructural Prediction in Nickel Superalloys

2007 ◽  
Vol 539-543 ◽  
pp. 3064-3069 ◽  
Author(s):  
Jeffery W. Brooks ◽  
S. Tin ◽  
R.P. Guest
Keyword(s):  
Grain Growth ◽  
Microstructural Evolution ◽  
Nickel Superalloys ◽  
Alloy 718 ◽  
Inconel Alloy ◽  
Forged Parts ◽  
Wide Range ◽  
Dynamic Recrystallisation

Forged parts, specifically designed for the validation of microstructural models, have been manufactured in Inconel alloy 718 using a wide range of thermo-mechanical histories. The microstructural evolution observed in the forged samples has been compared with predictions from two models for dynamic recrystallisation and grain growth.

One Action Press Forming of Helix Bevel Gear by Using Multi-Cylinder Press and Die Heating System

2018 ◽  
Vol 12 (5) ◽  
pp. 767-774
Author(s):  
Katsuaki Nakamura ◽  
◽  
Hiroshi Koresawa ◽  
Hiroyuki Narahara
Keyword(s):  
Hot Forging ◽  
High Hardness ◽  
Heating System ◽  
Bevel Gear ◽  
Cold Forging ◽  
Machining Time ◽  
Forging Process ◽  
Forged Parts ◽  
Almost All ◽  
Forging Press

In the case of a complex shaped helix bevel gear, the forging of complete gear tips is very difficult to achieve. In almost all cases, tooth profile is finished by cutting machine from simple shaped forged parts, therefore requiring considerable machining time and cost. However, there are many approaches to forging. Forging is mainly classified as hot and cold forging, and uses a single motion press. In the case of hot forging takeoff of products from die is difficult by the cooling shrinkage from die and accuracy of products is lower level than cold forging. In addition, in the case of cold forging, a complicated shape is difficult to achieve based on the lack of ductility of the materials. To realize a helix bevel gear using a single forging operation, we applied a tool heating system and three-axis forging press. The tool heating system is applied to prevent a temperature decrease in the material by contact between the tool and forging material during the forging process. Further, to optimize the forging direction and timing, we used a three-axis forging press. We confirmed good forging capability of this special forging process, as well as the high precision of the forged parts. Moreover, through the thermo-mechanical control of steel and the tool temperature, the forged parts showed good mechanical properties, such as high hardness.

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