scholarly journals Development of numerical tool for hybrid manufacturing process for titanium sheet metal forming

2020 ◽  
Vol 321 ◽  
pp. 04026
Author(s):  
Mohamed ACHOURI
Keyword(s):  
Aerospace Industry ◽  
Material Behavior ◽  
Hot Forming ◽  
Simulation Tool ◽  
Forming Process ◽  
Simulation Strategy ◽  
Super Plastic ◽  
Plastic Forming ◽  
Aeronautical Industry ◽  
Super Plastic Forming

The use of titanium in the aerospace industry has grown considerably in recent years in conjunction with the development of composite aircraft. In this way, improving titanium forming has become an important issue for the industry, both for productivity objectives and the ability to deliver basic parts according to the needs imposed by aircraft delivery rates, as well as for cost objectives. Currently, hot forming of titanium parts can be achieved through two processes: Super-plastic forming (SPF) or Hot Forming (HF). The aeronautical industry wanted to develop an innovative process for the manufacture of titanium parts by coupling the HF and SPF processes in order to exploit the advantages of these two technologies. The development of a mixed HF / SPF process will thus not only improve the rates and allow better control of the quality of the formed parts (thickness homogeneity), but also, by allowing forming at lower temperatures, this hybrid process presents a large interest at the energy plan. The study was devoted to the development of a hybrid HF/SPF process, carried out at a common temperature, allowing the “pre-forming” of the part in HF mode and the “calibration” of the part in SPF mode, while respecting a global cycle time compatible with the objectives of the aerospace industry and guaranteeing the quality expected for the final complex part. Improving the performance of the final part requires a development of numerical simulation tool of the forming process. The available simulation tool (ABAQUS/ Standard) must be adapted to define the best simulation strategy according to the simulated parts; moreover, it remains imperative to determine the input data (material behavior laws of titanium alloys) adapted to the cases to be treated (strain rate and process temperature).

Conventional Super Plastic Forming and Multi-attribute Optimization through VIKOR and ANOVA

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
A. Thirugnanam ◽  
S.P. Sundar Singh Sivam ◽  
K. Saravanan ◽  
N. Harshavardhana ◽  
D. Kumaran
Keyword(s):  
Process Parameters ◽  
Automotive Industry ◽  
Complex Geometry ◽  
Metal Flow ◽  
Maximum Height ◽  
Forming Process ◽  
Super Plastic ◽  
Plastic Forming ◽  
Item Quality ◽  
Super Plastic Forming

Super plastic forming is a manufacturing process utilized in the automotive industry like vehicle structures to produce complex geometries of aluminium or magnesium alloy components which cannot be fabricated at room temperature. The technique has proven to be an efficient cost-worthy process in forming various lightweight components for aerospace and medical applications During the process, parameters such as die entry radius, pressure, temperature and material thickness at the sheet die interface greatly influence the metal flow and also depends on product quality. The aim of prsent work is to optimise the conventional super plastic forming process parameters for getting the better quality with proper dimensions of hemispherical cup out of AA2024 sheet. The sheet is placed in a die, which can have a simple to complex geometry depends on the final part to be produced. It is shaped into the hemispherical cup using compressed air. These input process parameters were varied and output parameters such as thickness, maximum height, diameter and minimum forming time of cup were studied and L9 Orthogonal array with a specific end goal to acquire the yield parameters influencing item quality, both VIKOR and ANOVA were assessed.

INCONEL ALLOY 718SPF

Alloy Digest ◽  
1994 ◽  
Vol 43 (11) ◽  
Keyword(s):  
Base Alloy ◽  
Low Flow ◽  
Inconel Alloy ◽  
Gamma Prime ◽  
Size Stability ◽  
Super Plastic ◽  
Plastic Forming ◽  
Super Plastic Forming ◽  
Grain Size Stability ◽  
Prime Phase

Abstract INCONEL alloy 718SPF is an age-hardenable austenitic material whose strength is largely dependent on the precipitation of a gamma prime phase following heat treatment. The base alloy, however, possesses two-essential characteristics for super-plastic forming; grain size stability over time and temperature; and a combination of low flow stress and significant ductility. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on low and high temperature performance. Filing Code: Ni-471. Producer or source: Inco Alloys International Inc.

scholarly journals FINITE-ELEMENT MODELING OF SUPER-PLASTIC FORMING PROCESSES

2017 ◽  
Vol 18 (3) ◽  
pp. 55-71
Author(s):  
Angelina Khalitovna Akhunova ◽  
Radik Rafikovich Mulyukov ◽  
Rinat Vladikovich Safiullin
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Element Modeling ◽  
Super Plastic ◽  
Plastic Forming ◽  
Super Plastic Forming

A New Technique for the Investigation of Tribological Behavior of Sliding Pairs Used in Hot Forming Processes

2008 ◽  
Author(s):  
Vjekoslav Franetovic
Keyword(s):  
Tribological Behavior ◽  
Hot Forming ◽  
New Technique ◽  
Aluminum Sheet ◽  
Forming Process ◽  
The Real ◽  
Plastic Forming ◽  
Quick Plastic Forming ◽  
A New Technique ◽  
Interacting Surfaces

Hot forming of aluminum sheet is highly influenced by the tribological behavior of the interacting surfaces of sliding pairs. Here we describe a new technique to investigate tribo-pair candidates for Quick Plastic Forming (QPF) and warm forming processes. This technique represents a bench type simulation of the real forming process where the sheet and tool interact by sliding against each other in a single motion (slide/stroke).

Numerical Study of Radiation and Temperature Phenomena for Improved Super-Plastic Sheet Metal Forming

2012 ◽  
Vol 735 ◽  
pp. 170-179
Author(s):  
Michal Mis ◽  
Richard Hall ◽  
Julian Spence ◽  
Nwabueze Emekwuru ◽  
Kevin Kibble
Keyword(s):  
Numerical Study ◽  
Process Efficiency ◽  
Work Piece ◽  
Heat Management ◽  
Selective Heating ◽  
Super Plastic ◽  
Plastic Forming ◽  
Improved Design ◽  
Super Plastic Forming ◽  
Accurate Temperature Control

In most super-plastic forming (SPF) investigations the focus is usually on the material aspects. In this paper the authors develop a model to improve the heat management of SPF. The model presented improved process possibilities. The improved design involves selective application of heat to the material. Final product shape can easily be controlled by accurate temperature control of the work piece. Numerical simulation has been carried out on various components including a ‘top hat shape‘ and a heat exchanger part. Simulation comparisons are made between selective heating and conventional processing, where all of the formed material is at the same temperature, and greater process efficiency of the selective heating approach is demonstrated.

scholarly journals TITANIUM SHEET HOT FORMING IN THE AEROSPACE INDUSTRY

2020 ◽  
Vol 321 ◽  
pp. 04020
Author(s):  
Guillaume SANA
Keyword(s):  
Production Rate ◽  
Aerospace Industry ◽  
Superplastic Forming ◽  
Hot Forming ◽  
Forming Process ◽  
Titanium Sheet ◽  
Part Quality ◽  
The Past ◽  
Lightweight Alloys ◽  
Commercial Aircrafts

Technologies dedicated to hot forming of titanium sheet are key processes for the manufacturing of structural and engine parts in the aerospace industry. The evolution of these processes in the past years is strategical taking into account the on-going increase of production rate of commercial aircrafts as single aisle and long-range civil aircrafts. Starting from the use of single superplastic forming press, the state-of-the art has evolved to the use of automated forming cells from one side and to the development of the Hot Forming process on the other side. These evolutions are pushed by the aerospace market and its needs of a strong and efficient supply chain. In order to assure production rate, cost saving and part quality to our customer, Aries Alliance offers tailor made solutions adapted to each customer need. From the delivery of fully-automated smart press cell to serial part production Aries Alliance is able to provide smart answer to the challenges brought by end-users. One of the roles of this niche industry is also to promote titanium applications challenged by the market facing strong competition from lightweight alloys like Al‑Li or composite materials especially for aerostructure applications.

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