Optimization of squeeze casting process of gearbox cover based on FEM and Box-Behnken design

2021 ◽  
Author(s):  
Junhong Li ◽  
Yu Sun ◽  
Yu Wang ◽  
Jue Sun
Keyword(s):  
Squeeze Casting ◽  
Casting Process ◽  
Box Behnken Design ◽  
Squeeze Casting Process

scholarly journals Investigations on coating of dies for advanced squeeze casting process

2014 ◽  
Vol 20 (1) ◽  
Author(s):  
Ildiko Peter ◽  
Mario Rosso ◽  
Christian Castella
Keyword(s):  
Squeeze Casting ◽  
Casting Process ◽  
Squeeze Casting Process

Development of Steel Wire Rope – Reinforced Aluminium Composite for Armour Material Using the Squeeze Casting Process

2011 ◽  
Vol 277 ◽  
pp. 27-35 ◽  
Author(s):  
Dwi Rahmalina ◽  
Bondan Tiara Sofyan ◽  
Bambang Suharno ◽  
Eddy S. Siradj
Keyword(s):  
Squeeze Casting ◽  
Steel Wire ◽  
High Carbon Steel ◽  
Casting Process ◽  
Optical Microscope ◽  
Wire Rope ◽  
Aluminium Composite ◽  
Ballistic Properties ◽  
Semi Solid ◽  
Squeeze Casting Process

Steel wire rope – reinforced aluminium composite - has been developed to improve the ballistic properties and mobility of armour material. Critical to obtaining ballistic resistance is that the materials must be sufficiently hard and strong, especially at the surface where a projectile will first make impact. To obtain this resistance, aluminium alloys can be strengthened by adding Cu and Mg. This research studied the ballistic properties of aluminium composites with varied Cu and Mg content. The matrix used in this study was an Al-7Si master alloy with 0.08-1.03 wt. % Mg and 0.05-3.75 wt. % Cu, both independently and in combination. A high carbon steel wire rope was used as strengthening material. The samples were produced through the squeeze casting process with a pressure of 1 MPa at semi-solid melting temperatures of 590-610 °C. The slab was then rolled for 10 % reduction to increase the hardness. Ballistic testing was performed in accordance with ASTM F1233 by using a 9 mm calibre projectile and 900 direction. Micro structural observation was conducted in the as-cast and ballistic samples, performed with optical microscope and scanning electron microscope (SEM). The results showed that squeeze casting may improve interfacial wettability and reduce void. The increase in Mg resulted in the decline of interfacial voids, but Cu addition tended to increase them. The aluminium armour was able to withstand a 9 mm calibre projectile, although some cracks were visible. The wire rope was not effective in stopping the penetration of a 7.62 mm calibre projectile.

Investigation of mechanical properties on Al 6061-B4C composite by squeeze casting process technique

2019 ◽  
Vol 1 (1) ◽  
pp. 38-48
Author(s):  
A. Sathishkumar ◽  
Gowtham A ◽  
M. Jeyasuriya ◽  
S. DineshBabu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Metal Matrix ◽  
Squeeze Casting ◽  
Casting Process ◽  
Weight Fraction ◽  
Squeeze Pressure ◽  
B4c Particles ◽  
Engineering Industries ◽  
Squeeze Casting Process

Aluminum alloy is widely used in automotive, aerospace and other engineering industries because of its excellent mechanical properties. The main objective is to enhance 6061 Al alloy’s mechanical properties by producing 6061-B4C composite through squeeze casting process. Experimentation was carried out with different micron sizes and weight fraction of B4C particles. The mechanical properties of reinforced metal matrix were experimentally investigated in terms of Ultimate Tensile Strength and Hardness. We observe that these two properties are improved by the reinforcement of B4C particles and applied squeeze pressure.

Die Design for Main Bearing Cap of Engine Block Based Semi-Solid Die Casting Process and the Comparison Analysis with Squeeze Casting Process

2019 ◽  
Vol 285 ◽  
pp. 429-435 ◽  
Author(s):  
Song Chen ◽  
Da Quan Li ◽  
Fan Zhang ◽  
Min Luo ◽  
Xiao Kang Liang ◽  
...  
Keyword(s):  
Squeeze Casting ◽  
Die Casting ◽  
Dendritic Structure ◽  
Casting Process ◽  
Die Design ◽  
Main Bearing ◽  
Block Based ◽  
Semi Solid ◽  
Bearing Cap ◽  
Squeeze Casting Process

There are two new processes to development automobile structural components which have certain thickness. In the present paper, taking a main bearing cap product as an example, analyses die design by comparing the experimental and computational numerical simulation results. For the main bearing cap, product structure and mold design were designed to be suitable for characters of SSM die casting and squeeze process. Semi-solid slurry has significantly higher viscosity than liquid metal. This character of fluidity and solid fraction phase make the flow condition more laminar than liquid squeeze casting with the partial fill experiment. And compared with squeeze casting process, the globular shape grain size is smaller than dendritic structure. And mechanical property result shows that the elongation of SSM die casting can achieve more than twice than squeeze casting.

Development of Metal Matrix Nanocomposites of AA6061 – SiCp Using Ultrasonic Cavitations in Squeeze Casting Process

2015 ◽  
Author(s):  
Mohan Bangaru ◽  
Thirumal Azhagan Murugan ◽  
Rajadurai Arunachalam
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Metal Matrix ◽  
Squeeze Casting ◽  
Casting Process ◽  
Volume Percentage ◽  
Metal Matrix Nanocomposites ◽  
Matrix Nanocomposites ◽  
Squeeze Casting Process

In the recent days, aerospace, automotive and defense sectors have been the main driving force behind the search of lighter and stronger materials in order to use in the production of vehicles. The growing demand for the production of light weight structural components and systems is fulfilled by the development of innovative metallic materials such as composites and alloys particularly based on aluminium because of their desirable properties such as low density, good castability, excellent strength and excellent corrosion resistance. Widely employed processes such as gravity and pressure die casting are used for processing aluminium alloys but the components exhibit several casting defects such as porosity, cracks, segregation and hot tears etc. This drives the industries to develop new processes which produce defect free components in shorter time as they have been under competitive pressure. Of the many such processes, squeeze casting has good capacity to produce less defective components. Squeeze casting is the process in which the molten metal solidifies under the application of pressure. The development of Aluminium Matrix Composites (AMCs) through squeeze casting has been one of the major areas of research in recent times. Research works on AMCs reinforced with micrometric particles have shown that the ability to strengthen the matrix alloy by them is lesser than nanometric particles. Metal matrices reinforced with nanoparticles are characterized by significant improvement in strength and wear resistance, improved ductility and improved dimensional stability at elevated temperatures. But, nanosized ceramic particles constitute problems during fabrication as it is extremely difficult to obtain uniform dispersion of nanoparticles in liquid metals owing to their high viscosity, poor wettability in the metal matrix, and a large surface-to-volume ratio. These problems induce agglomeration and clustering of nanoparticles. The nanoparticles can be dispersed uniformly in the metal matrix by means of employing ultrasonic cavitations. Ultrasonic cavitations include the formation, growth and collapse of micro-bubbles in liquids, under cyclic high intensity ultrasonic waves. The cavitation bubbles collapse and generate a huge amount of energy, which could be used in dispersion of the nanoparticles more uniformly in the melt. In this study, squeeze casting is combined with ultrasonic cavitations to develop Metal Matrix Nanocomposites (MMNCs) of AA6061 – SiCp as a maiden attempt. The impact of varying volume percentage of SiCp nanoparticles (average size of 45 nm – 65 nm) by ultrasonic cavitations on mechanical properties such as ultimate tensile strength and hardness exhibited by MMNCs were analyzed. In this research, volume percentage of SiCp nanoparticles was varied at 0.4%, 0.8% and 1.2% respectively by employing ultrasonic vibrations at the amplitude of 70 μm to the melt of AA6061. The melt of AA6061-SiCp was poured into the pre heated die cavity and squeeze pressure of 105 Mpa was applied over it for a certain period while developing MMNCs. Scanning Electron Microscope (SEM) images showed the uniform distribution of SiCp nanoparticles in AA6061 matrix. Energy Dispersive Spectroscopy (EDS) in SEM confirmed the incorporation of SiCp in AA6061 matrix. The obtained results confirmed the effectiveness of ultrasonic cavitations in squeeze casting process to disperse the nanoparticles of SiCp uniformly in AA6061 matrix. The mechanical properties of MMNCs such as ultimate tensile strength and hardness exhibited an increasing trend with respect to the increase in volume percentage of SiCp nanoparticles. Thus there prevails a great scope to develop MMNCs of aluminium using ultrasonic cavitations in squeeze casting process.

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