Predict the Gating System Design on the Tensile Strengthen in the Sand Casting Using Computational Fluid Dynamic PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Predict the Gating System Design on the Tensile Strengthen in the Sand Casting Using Computational Fluid Dynamic PDF full book. Access full book title Predict the Gating System Design on the Tensile Strengthen in the Sand Casting Using Computational Fluid Dynamic by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category : Aluminium alloys
Languages : en
Pages : 104
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aluminium alloys
Languages : en
Pages : 104
Get Book Here
Book Description
Author: Dr. Chandan Deep Singh
Publisher: BookRix
ISBN: 3743849704
Category : Technology & Engineering
Languages : en
Pages : 97
Get Book Here
Book Description
Designing in sand casting is a critical activity for manufacturing. Further, activities like cavity design, cavity layout and design of gating system are essential in design. Design of gating system in sand casting is dependent upon a various parameters. Gating system design requires lot of manual input and a number of iterations to finalize the design. This requires a good knowledge of casting process, making this activity completely dependent on the user. In present day industry, lot of CAD/CAM tools are applied for design, development and manufacturing. However, need of sand casting expert throughout design and manufacturing makes it a quite lengthy process. Gating system design being one of the major activities also takes much time. Therefore, it would be quite beneficial to develop a system for automated generation of gating system. Proposed system takes CAD file of the die casting part as input and uses sand casting process, machine and alloy knowledge to determine different parameters for the gating system. Designs of the components of the gating system like runner, gate and overflow have been attempted. A feature library has been proposed as a part of this work which together with parametric design of the gating system generates CAD model of the components of the gating system. The system would go a long way in bridging the gap between designing and manufacturing of die-casting.
Author: Akhyar
Publisher: Springer Nature
ISBN: 9811607362
Category : Technology & Engineering
Languages : en
Pages : 525
Get Book Here
Book Description
This book gathers a selection of peer-reviewed papers presented at the 2nd International Conference on Experimental and Computational Mechanics in Engineering (ICECME 2020), held as a virtual conference and organized by Universitas Syiah Kuala, Banda Aceh, Indonesia, on 13–14 October 2020. The contributions, prepared by international scientists and engineers, cover the latest advances in computational mechanics, metallurgy and material science, energy systems, manufacturing processing systems, industrial and system engineering, biomechanics, artificial intelligence, micro/nano-engineering, micro-electro-mechanical system, machine learning, mechatronics, and engineering design. The book is intended for academics, including graduate students and researchers, as well as industrial practitioners working in the areas of experimental and computational mechanics.
Author: Satish Kumar Pabba
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 290
Get Book Here
Book Description
Author: Santosh Reddy Sama
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
In recent years, Additive Manufacturing (AM) technologies are fueling a paradigm shift in the advanced manufacturing landscape across all industrial sectors. The metal casting industry is also taking advantage of the wide variety of rapid manufacturing solutions offered by AM processes. The metal casting industry supports about 90% of total manufactured goods and is expected to reach a market size of about 40 billion USD by 2025. Sand casting is the most widely used metal casting process and utilizes expendable molds that demand expensive tooling, high lead time and limited flexibility in their fabrication. In addition, limitations in process control and feasible gating and feeding systems, traditional sand casting experiences higher scrap rates. AM offers an alternative mold fabrication technology known as 3D Sand-Printing (3DSP) process that enables direct digital manufacturing of complex expendable sand molds and cores without any tooling requirements. Ever-growing interest in this indirect metal AM process is attributed to its ability to rapidly produce cores and molds for complex metal castings that are otherwise impossible to manufacture using conventional techniques. Knowledge-based design rules for this process are currently very limited and are progressively realized in an ad-hoc basis to produce economic low-volume castings. Despite the wealth of knowledge in metal AM, no work to date has been reported to take advantage of design complexity offered by 3DSP in developing optimal gating and feeding designs to mitigate casting defects. This thesis provides the first known investigation into the application of design freedom offered by 3DSP to transform and monitor sand casting performance. Non-conventional design rules for gating and risering (also known as rigging) systems are developed to reduce surface turbulence, oxide films, air entrapment, bubble damage and several other casting defects, and improved metallic yield. Several case studies are presented to illustrate the improved casting performance through systematically reengineering elements of the rigging system viz. pouring basin, sprue, runners and risers. Their efficacy is validated through computational simulations and experimental procedures. Of the various components of gating system, innovative sprue design provides the highest opportunity to improve casting quality. Numerical models for novel parabolic and conical-helix sprue profiles can be developed through constrained optimization algorithm based on principles of casting hydrodynamics to reduce surface turbulence. Computational flow simulations, computed tomography scanning, microstructure and mechanical characterization experiments are performed to validate that incorporation of 3D Sand-Printing featured mathematically optimized gating systems (particularly conical-helix sprues) to significantly improve the performance of sand castings.Finally, existing foundry technologies have very limited capabilities to monitor real-time flow conditions of liquid metal during mold filling. Two approaches for novel non-intrusive real-time mold fill monitoring by embedding inexpensive miniature Internet of Things (IoT) sensors into 3d sand-printed molds are proposed. These sensor technologies are based on the electrical properties of molten metals, the former measuring the magnetic flux generated by the conductive liquid and the latter measuring the interference of electric fields by modifying dielectric near the sensor. Experiments are conducted to evaluate the efficacy of both these concepts. Results from experiments validate that IoT sensors can be embedded into 3DSP molds to successfully monitor flow fields that can be used to benchmark simulation results and optimize gating systems.
Author: Ján Majerník
Publisher:
ISBN: 9783965950146
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Chengming Wang
Publisher:
ISBN:
Category : Computer-aided design
Languages : en
Pages : 292
Get Book Here
Book Description
Author: Wanlong Wang
Publisher: Springer
ISBN: 9781441957320
Category : Technology & Engineering
Languages : en
Pages : 164
Get Book Here
Book Description
Rapid Tooling Guidelines for Sand Casting describes the guidelines for the sand casting industry in using rapid tooling processes. Topics in the seven chapters include sand casting processes, tool design and construction, fast freeform fabrication processes, rapid tooling processes, sand casting dimension control, rapid tooling evaluation methods and decision making processes. Twelve case studies will also be examined in the book.
Author: Ryan Stebbins
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Casting is one of the oldest manufacturing methods, dating to 5000 B.C. Its influence can still be seen today, accounting for a $110 billion impact on the US economy in 2019. Sand casting, is the most popular casting process due to its ability to produce relatively complex parts with almost any alloy at comparatively low costs, as well as manufacture both large components and small precision castings. Despite its prominence, casting has design limitations such as required draft angles and parting lines due to required tooling and patterns, which has led to the exploration of new manufacturing methods, such as additive manufacturing (AM). AM allows for increased part complexity, reduced material usage, part consolidation, usage of lattices, and decreased lead time between design and production. The rise of this novel technology is reflected in the large influx in publications and patents involving AM within in the past couple decades. However, its limitations in part size, cost, and available alloys prevent it from fully replacing casting. The merger of both sand casting and AM binder jetting into a hybrid manufacturing method is called 3D sand printing (3DSP), and it offers the benefits of both methods. With the advent of 3DSP, more complex geometries and castings are possible, allowing for the redesign and optimization of gating and rigging systems for defect reduction and improvements in casting quality. Despite research having already explored redesigning gating components like pouring basins, sprues, and runners using more complex mold geometries realizable through 3DSP, no research has considered the use of 3DSP for runner extensions. This thesis investigates various runner extension designs for the purpose of defect reduction. Out of the six different runner extension designs, three required 3DSP due to complexity. All designs were evaluated using simulation and experimental validation to ascertain their impact on casting quality. Designs were derived from literature review of gating system concepts. Simulations were completed using Flow-3D Cast v5 CFD software, comparing the resulting entrained air, tracer particles, and void particles present in the casting cavity. Results indicated difference between designs but required additional experimental comparisons to conclude runner extension impact. Designs were tested on manually poured Al319 cast plates, using a hybrid mold making method of both green sand and 3DSP extension molds. A total of eighteen plates were cast, three per design, all of which were scanned with computed tomography (CT) to determine the defect volume fraction present in the final castings. Three-point bending bars were machined from cast plates and tested to compare extension designs impact on mechanical properties. Statistical analysis of both mechanical performance and defect volume fraction showed no differences between runner extension designs. The results obtained in this thesis aid for the further optimization of gating systems and helping foundries reach zero defect casting.
Author: Satyanarayana Golla
Publisher:
ISBN:
Category : Casts
Languages : en
Pages : 306
Get Book Here
Book Description
