scholarly journals Incremental Forming of Titanium Grade 2 Sheet by TPIF-RL Method

2021 ◽  
Author(s):  
Ömer SEÇGİN ◽  
Ergün NART ◽  
İbrahim ÖZSERT
Keyword(s):  
Incremental Forming ◽  
Titanium Grade

Manufacture of Accurate Titanium Cranio-Facial Implants with High Forming Angle Using Single Point Incremental Forming

2013 ◽  
Vol 549 ◽  
pp. 223-230 ◽  
Author(s):  
Joost R. Duflou ◽  
Amar Kumar Behera ◽  
Hans Vanhove ◽  
Liciane S. Bertol
Keyword(s):  
Incremental Forming ◽  
Single Point ◽  
Design Feature ◽  
Feature Analysis ◽  
Medical Applications ◽  
Single Point Incremental Forming ◽  
Wall Angle ◽  
Titanium Grade ◽  
Intermediate Part ◽  
Forming Angle

One of the key application areas of Single Point Incremental Forming is in the manufacture of parts for bio-medical applications. This paper discusses the challenges associated with the manufacture of cranio-facial implants with extreme forming angles using medical grade titanium sheets. While on one hand, the failure wall angle is an issue of concern, the parts also need to be manufactured with accuracy at the edges where the implants fit into the human body. Systematic steps taken to overcome these challenges, using intelligent intermediate part design, feature analysis and compensation, are discussed. A number of case studies illustrating the manufacture of accurate parts in aluminium, stainless steel and titanium grade-2 alloy are discussed.

Investigations on the void coalescence and corrosion behaviour of titanium grade 4 sheets during single point incremental forming process

2019 ◽  
Vol 66 (6) ◽  
pp. 861-867 ◽  
Author(s):  
G. Yoganjaneyulu ◽  
Y. Phaneendra ◽  
V.V. Ravikumar ◽  
C. Sathiya Narayanan
Keyword(s):  
Electron Microscope ◽  
Incremental Forming ◽  
Corrosion Behaviour ◽  
Single Point ◽  
Void Coalescence ◽  
Single Point Incremental Forming ◽  
Nacl Solution ◽  
Corrosion Morphology ◽  
Content Type ◽  
Titanium Grade

Purpose The purpose of this paper is to investigate the void coalescence and corrosion behaviour of titanium Grade 4 sheets during single point incremental forming (SPIF) process with various spindle rotational speeds. The development of corrosion pits in 3.5 (%) NaCl solution has also been studied during SPIF process. Design/methodology/approach In this current research work, the void coalescence analysis and corrosion behaviour of titanium Grade 4 specimens were studied. A potentio-dynamic polarization (PDP) study was conducted to investigate the corrosion behaviour of titanium Grade 4 processed samples with various spindle speeds in 3.5 (%) NaCl solution. The scanning electron microscope and transmission electron microscope analysis was carried out to study the fracture behaviour and corrosion morphology of processed samples. Findings The titanium Grade 4 sheets obtained better formability and corrosion resistance by increasing the CNC spindle rotational speeds. In fact that, the significant plastic deformation affects the corrosion rate with various spindle speeds were recorded. Originality/value The spindle rotational speeds and vertical step depths increases then the titanium Grade 4 sheets showed better formability, void coalescence and corrosion behaviour as the same is evidenced in forming limit diagram and PDP curves.

Investigations on strain distribution, stress-based fracture limit and corrosion behaviour of titanium Grade 2 sheets during single point incremental forming

2020 ◽  
Vol 67 (1) ◽  
pp. 119-127 ◽  
Author(s):  
G. Yoganjaneyulu ◽  
V.V. Ravikumar ◽  
C. Sathiya Narayanan
Keyword(s):  
Plastic Deformation ◽  
Corrosion Rate ◽  
Strain Distribution ◽  
Incremental Forming ◽  
Corrosion Behaviour ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Nacl Solution ◽  
Content Type ◽  
Titanium Grade

Purpose The purpose of this paper is to investigate the strain distribution, stress-based fracture limit and corrosion behaviour of titanium Grade 2 sheets during single point incremental forming (SPIF) process, with various computerized numerical control (CNC) spindle rotational speeds and step depths. The development of corrosion pits in 3.5 (%) NaCl solution has also been studied during the SPIF process. Design/methodology/approach A potentiodynamic polarization (PDP) study was performed to investigate the corrosion behaviour of titanium Grade 2 deformed samples, with various spindle rotational speeds in 3.5 (%) NaCl solution. The scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis was carried out to study the fracture behaviour, dislocation densities and corrosion morphology of deformed samples. Findings The titanium Grade 2 sheets exhibited better strain distribution, fracture limit and corrosion resistance by increasing the CNC spindle rotational speeds, tool diameters and vertical step depths (VSD). It was recorded that varying the spindle speed affected plastic deformation which in turn affected corrosion rate. Research limitations/implications In this study, poor corrosion rate was observed for the as-received condition, and better corrosion rate was achieved at maximum speed of 600 rpm and 0.6 mm of VSD in the deformed sheet. This indicates that corrosion rate improved with increase in the plastic deformation. The EDS analysis report of corroded surface revealed the composition to be mainly of titanium and oxides. Practical implications This study discusses the strain distribution, stress-based fracture limit and corrosion behaviour by using titanium Grade 2 sheets during SPIF process. Social implications This study is useful in the field of automobile and industrial applications. Originality/value With an increase in the spindle rotational speeds and VSD, the titanium Grade 2 sheets showed better strain distribution, fracture limit and corrosion behaviour; the same is evidenced in fracture limit curve and PDP curves.

Design of Experiment for Incremental Forming of Artificial Skull on Titanium Grade 2

2014 ◽  
Vol 950 ◽  
pp. 103-108 ◽  
Author(s):  
Nuttaphong Sornsuwit ◽  
Sunthorn Sittisakuljaroen
Keyword(s):  
Surface Roughness ◽  
Experimental Design ◽  
Factorial Design ◽  
Sheet Metal ◽  
Design Of Experiment ◽  
Incremental Forming ◽  
Forming Process ◽  
Titanium Grade ◽  
Main Effects ◽  
Full Factorial

The incremental forming process was investigated in this research for sheet metal. With this technique, it appeared in different surface roughness. This research studied a titanium grade 2 sheet, which is formed by incremental forming process with varied factors in the experimental design for Full Factorial Design 2-level for consideration of three factors determining the surface roughness. It was found that the factors of main effects to surface roughness were spindle speed and overlap. However, the depth did not affect directly on the surface roughness.

Improve the Micro-hardness of Single Point Incremental Forming Product Using Magnetic Abrasive Finishing

2020 ◽  
Vol 38 (8A) ◽  
pp. 1137-1142
Author(s):  
Baqer A. Ahmed ◽  
Saad K. Shather ◽  
Wisam K. Hamdan
Keyword(s):  
Vickers Hardness ◽  
Feed Rate ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Step Size ◽  
Coil Current ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing

In this paper the Magnetic Abrasive Finishing (MAF) was utilized after Single Point Incremental Forming (SPIF) process as a combined finishing process. Firstly, the Single Point Incremental forming was form the truncated cone made from low carbon steel (1008-AISI) based on Z-level tool path then the magnetic abrasive finishing process was applied on the surface of the formed product. Box-Behnken design of experiment in Minitab 17 software was used in this study. The influences of different parameters (feed rate, machining step size, coil current and spindle speed) on change in Micro-Vickers hardness were studied. The maximum and minimum change in Micro-Vickers hardness that achieved from all the experiments were (40.4 and 1.1) respectively. The contribution percent of (feed rate, machining step size, coil current and spindle speed) were (7.1, 18.068, 17.376 and 37.894) % respectively. After MAF process all the micro surface cracks that generated on the workpiece surface was completely removed from the surface.

SANDVIK TITANIUM GRADE 2

Alloy Digest ◽  
1997 ◽  
Vol 46 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Titanium Grade

Abstract Sandvik titanium Grade 2 is chemically pure (CP) titanium produced as seamless and SeamFree tubing. The alloy is resistant to a wide variety of chloride media and is used to handle seawater. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: TI-108. Producer or source: Sandvik.

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