Coining process by satyam diwedi
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Coining is a cold working process that uses high pressure to plastically deform a workpiece between a punch and die to conform to their shapes. The metal flows under compressive forces to take on the impressions of the completely closed dies. Coining provides a finer, more detailed surface finish than other metal forming processes and work hardens the surface. It is commonly used for minting coins and medallions, making jewelry, badges, buttons, springs, and complex electronic and precision parts that require close tolerances and smooth polished surfaces.
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Flashless Forging
Flashless forging is a closed die forging process where metal is deformed in a die cavity with little to no excess flash. It is conducted at an elevated temperature between cold and hot forging. The preheated workpiece is compressed in the die until deformation occurs, producing a near-net or net-shaped part. Flashless forging requires tight process control of work volume and die cavity size to ensure proper filling. It is well-suited for producing simple, symmetrical parts and precision forgings from materials like aluminum.
Metal spinning
Metal spinning is a sheet metal forming process that uses rollers to form axisymmetric parts over a rotating mandrel. There are three main types: conventional spinning, shear spinning, and tube spinning. Spinning can be done hot or cold and involves placing a metal blank against a mandrel and using tools to deform the material into shape as it rotates. Applications include automotive parts, containers, and more. Key advantages are low tooling costs, design flexibility, and little material waste.
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Forging is an ancient metalworking process where compressive forces are used to shape metal using dies and tools. It originated over 4000 years ago and was used to make jewelry, coins, and implements. Today, forged parts include components for turbines, machinery, transportation equipment, and more. Forged parts often require additional finishing like heat treating and machining to achieve accurate dimensions and smooth surfaces. Types of finishing processes include coining to mark parts, heading to increase cross-sections like bolt heads, and piercing or hubbing to indent or form cavities in metal.
What is cold forging?
The cold forging, cold extrusion, and cold heading are general terms for plastic processing. Cold forging, also called cold volume forming, is a manufacturing process and a processing method. Cold forging is the forming process below the recrystallization temperature of the material, and the forging performed below the recovery temperature.
Flashless forging
Flashless forging is a type of precision forging where the work material is completely surrounded by the die cavity during compression, allowing no flash to form. It involves designing dies without flash areas to minimize material waste. Key parameters include billet volume, preform weight/shape, and tool/workpiece temperatures. Forces required are calculated based on flow stress and projected area. Flashless forging provides advantages like lower material usage, better dimensional accuracy, and surface finish compared to conventional forging, though it requires more complex dies and tooling. Common applications include gears, connecting rods, pistons, and aerospace/defense components.
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ppt on Forging process
Forging is a metalworking process that involves shaping metal using localized compressive forces. It can be performed hot, warm, or cold. Forged parts range in weight from under a kilogram to 580 metric tons. Forging improves metals' strength and durability through grain refinement. There are several forging techniques including smithy forging (traditional hand forging), drop forging (using a hammer), press forging (applying continuous pressure), and roll forging (using opposing rolls). Forged parts generally require further processing to achieve their final shape. Common forgeable metals include carbon steels, aluminum, and titanium.
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Metal spinning
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Forging is an ancient metalworking process where compressive forces are used to shape metal using dies and tools. It originated over 4000 years ago and was used to make jewelry, coins, and implements. Today, forged parts include components for turbines, machinery, transportation equipment, and more. Forged parts often require additional finishing like heat treating and machining to achieve accurate dimensions and smooth surfaces. Types of finishing processes include coining to mark parts, heading to increase cross-sections like bolt heads, and piercing or hubbing to indent or form cavities in metal.
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ppt on Forging process
Forging is a metalworking process that involves shaping metal using localized compressive forces. It can be performed hot, warm, or cold. Forged parts range in weight from under a kilogram to 580 metric tons. Forging improves metals' strength and durability through grain refinement. There are several forging techniques including smithy forging (traditional hand forging), drop forging (using a hammer), press forging (applying continuous pressure), and roll forging (using opposing rolls). Forged parts generally require further processing to achieve their final shape. Common forgeable metals include carbon steels, aluminum, and titanium.
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This document discusses various bulk deformation processes including forging and extrusion. It describes different forging techniques like open-die, closed-die, and impression-die forging. Extrusion involves forcing a heated billet through a die to produce a part. Key factors that affect forging and extrusion are discussed, such as die design, temperature, speed, and the extrusion ratio. Common defects and parts produced via these processes are also mentioned.
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Forging is an ancient metalworking process where a metal is compressed under force into a desired shape. It can be done using a hammer and anvil and produces parts with good strength and toughness. There are different types of forging processes, including open-die forging using flat dies, impression-die forging where the workpiece takes the shape of shaped die cavities, and coining where parts are precisely forged without lubricants between dies. Forged parts often require additional heat treating for optimal properties.
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ACEP Magazine edition 4th launched on 05.06.2024
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Low power architecture of logic gates using adiabatic techniques
The growing significance of portable systems to limit power consumption in ultra-large-scale-integration chips of very high density, has recently led to rapid and inventive progresses in low-power design. The most effective technique is adiabatic logic circuit design in energy-efficient hardware. This paper presents two adiabatic approaches for the design of low power circuits, modified positive feedback adiabatic logic (modified PFAL) and the other is direct current diode based positive feedback adiabatic logic (DC-DB PFAL). Logic gates are the preliminary components in any digital circuit design. By improving the performance of basic gates, one can improvise the whole system performance. In this paper proposed circuit design of the low power architecture of OR/NOR, AND/NAND, and XOR/XNOR gates are presented using the said approaches and their results are analyzed for powerdissipation, delay, power-delay-product and rise time and compared with the other adiabatic techniques along with the conventional complementary metal oxide semiconductor (CMOS) designs reported in the literature. It has been found that the designs with DC-DB PFAL technique outperform with the percentage improvement of 65% for NOR gate and 7% for NAND gate and 34% for XNOR gate over the modified PFAL techniques at 10 MHz respectively.
Technical Drawings introduction to drawing of prisms
Method of technical Drawing of prisms,and cylinders.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
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Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
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"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia[JPP-1] - (JEE 3.0) - Kinematics 1D - 14th May..pdf
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5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
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Low power architecture of logic gates using adiabatic techniques
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Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
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Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
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Coining process by satyam diwedi
- 2. Concept Introduction Technique of coining Advantage of Coining Industrial Application
- 3. Introduction Coining is a cold working process that uses a great deal of force to plastically deform a work piece, so it conforms to a die. The coining process consists of die and punch. By using the punch and die, the impression and image are created on metal. The pressure involved in coining process is about 1600Mpa. The metal flows plastically and squeezed to the shape between the punch and die . The metal is caused to flow in the direction of perpendicular force . The type of impression is formed by compressive forces. The type of impression obtained on both side will be different. Coining can be done using a gear driven press, a mechanical press, or more commonly a hydraulically actuated press. Coining typically requires higher tonnage presses than stamping, because work piece is plastically deformed and nor actually cut. The coining process is preferred when there is a high tonnage.
- 4. Techniques of coining Completely closed dies are used for this process. High pressure is applied on the closed die containing the metal work piece. As the result of the high deformative stress, the metal conforms to the shape of the die. Lubricants are not used in coining as they are incompressible .
- 5. Advantages of coining Provide finer and detailed surface finish. Provide accurate bends in a consistent manner. Does not require expensive machinery. The work hardened surface can resist impact abrasion. Eliminate the need for complex finishing process. Plastic flow reduces the surface grain size and work hardens the surface.
- 6. Industrial Applications Minting of coins and medallions Making of jewelry Making badges, buttons, precision-energy springs Making complex electronic parts Making precision parts that require finer polished surface finishes. Note:- In coining pressure is applied on the surface of forging in order to obtain closer tolerances, smoother surfaces and eliminate draft.
- 7. END