Investment Casting of Near-Net Shape Gamma Titanium Aluminide Automotive Turbocharger Rotor

Kim, Myoung Gyun; Sung, Si Young; Lee, GyuChang; Park, Joon Pyo; Kim, Young Jig

doi:10.4028/www.scientific.net/msf.475-479.2547

Cited by 3 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is used mainly for making pipes, tubes, bushings, cylinder sleeves (liners), gun barrels, sleeves, rods, rings, etc. [6][7][8][9][10]. Vertical centrifugal casting machine is essentially a pressure casting technique, where the mold is rotated in a vertical axis.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Centrifugal Casting Parameters of AlSi Alloy by using the Response Surface Methodology

Ali

2019

IJE

View full text Add to dashboard Cite

Centrifugal casting is one of the advanced casting branches widely used in the metallurgical industry in which the centrifugal force helps strengthen the workpiece material. The present work attempt to study the effect of the horizontal and vertical centrifugal casting parameters included the centrifugal mold rotation speeds and G-factors values on the quality of the product. The work has been completed with design and fabricated of a low cost horizontal and vertical centrifugal casting machine with the main accessories for producing a hypoeutectic aluminum silicone (AlSi) alloy (content 10 % Si) specimens. The experimental results were analyzed and improved by using the statistical computer program "Design Expert 11" and response surface methodology (RSM). The results showed that for vertical and horizontal casting processes, the finest surfaces quality was achieved when working at mold rotation speed from 520 to 690 and 950 to 1230 RPM, i.e., with an average value of the G-factor = 69 and 50, respectively. The proof stress values were increased with increasing the mold rotation speed up to (690 RPM) and (1230 RPM) or used the G-factor value of 87.99 and 60.96 gave an increase in proof stress by 6.7 and (20.62% for vertical and horizontal casting experiments compared with gravitational casting, respectively. The obtained tensile strengths values were improved by 38.6 and 45.41 %, compared with the gravitational casting, respectively; while the percentage elongations were reduced to 0.281and 0.291 %; which means decreased by 33.45 and 31.69 % for the vertical and horizontal centrifugal casting compared with the values obtained by gravitational casting experiments, respectively.All metals, alloys, nonmetals and virtually any material that can be liquidized and pourable can be cast by centrifugal casting processes for producing an isotropic and a dense product, including carbon and alloy steels, gray and ductile iron, stainless steels, copper, aluminum and magnesium alloys, nickel, cobalt and titanium based alloys and also nonmetals, including plastics, ceramics, glasses [1], by using a stainless steel, cast iron and graphite mold materials [2]. The process has become widely used for producing special castings tubes, pipes, rolls, cylinder liners and other axisymmetric parts [3][4][5]. The final quality of the products is depending upon the rate of solidification, the rotational speeds of the mold and the molten metal flow pattern [5].Centrifugal casting machines are categorized into three designs based on the operating of the mold Surface Methodology

show abstract

Section: Introductionmentioning

confidence: 99%

Optimization of Centrifugal Casting Parameters of AlSi Alloy by using the Response Surface Methodology

Ali

2019

IJE

View full text Add to dashboard Cite

show abstract

Experimental Investigation of Effect of Process Parameters on the Tensile Strength of a Near Eutectic Aluminum-Silicon Alloy in Universal Centrifugal Casting Machine (UCCM)

Patel

Vadher

2022

Inter Metalcast

View full text Add to dashboard Cite

Near net shape manufacturing of metal: A review of approaches and their evolutions

Marini

Cunningham

Corney

2017

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

In the last thirty years the concept of manufacturability has been applied to many different processes in numerous industries. This has resulted in the emergence of several different "Design for Manufacturing" methodologies which have in common the aim of reducing productions costs through the application of general manufacturing rules. Near net shape technologies have expanded these concepts, targeting mainly primary shaping process, such as casting or forging. The desired outcomes of manufacturability analysis for near-net-shape (NNS) processes are cost and lead/time reduction through minimization of process steps (in particular cutting and finishing operations) and raw material saving. Product quality improvement, variability reduction and component design functionality enhancement are also achievable through NNS optimization. Process parameters, product design and material selection are the changing variables in a manufacturing chain that interact in complex, non-linear ways. Consequently modeling and simulation play important roles in the investigation of alternative approaches. However defining the manufacturing capability of different processes is also a "moving target" because the various NNS technologies are constantly improving and evolving so there is challenge in accurately reflecting their requirements and capabilities. In the last decade, for example, CAD, CNC technologies and innovation in materials have impacted enormously on the development of NNS technologies. This paper reviews the different methods reported for NNS manufacturability assessment and examines how they can make an impact on cost, quality and process variability in the context of a specific production volume. The discussion identifies a lack of structured approaches, poor connection with process optimization methodologies and a lack of empirical models as gaps in the reported approaches.

show abstract

Investment Casting of Near-Net Shape Gamma Titanium Aluminide Automotive Turbocharger Rotor

Cited by 3 publications

References 6 publications

Optimization of Centrifugal Casting Parameters of AlSi Alloy by using the Response Surface Methodology

Optimization of Centrifugal Casting Parameters of AlSi Alloy by using the Response Surface Methodology

Experimental Investigation of Effect of Process Parameters on the Tensile Strength of a Near Eutectic Aluminum-Silicon Alloy in Universal Centrifugal Casting Machine (UCCM)

Near net shape manufacturing of metal: A review of approaches and their evolutions

Contact Info

Product

Resources

About