Blackodising is a process that forms a corrosion-resistant coating on ferrous metals through a chemical reaction when immersed in a hot alkaline salt solution. This reaction converts the metal surface into magnetite (Fe3O4), providing protection without changing the part's dimensions. The black oxide coating has various applications and advantages, including corrosion resistance, an aesthetic black finish, and low cost processing, making it suitable for tool parts, fixtures, gears, and other mechanical components.
The Schmidt Hartmann boiler consists of two circuits - a primary circuit of distilled water that generates high pressure steam at 95-100 bar, and a secondary circuit of impure water that uses the high pressure steam to generate lower pressure steam at 55-60 bar. This design allows for the generation of steam using impure water, reducing costs by eliminating the need for a softening plant. However, deposits in the evaporator drum from the impure water require more frequent cleaning stops.
The Velox boiler is a water tube boiler that uses a gas turbine to drive an air compressor. This compressor pressurizes air that is fed into a vertical combustion chamber, increasing the heat from fuel combustion and accelerating the flue gases up to the speed of sound. This high-speed combustion transfer heat very efficiently to the water tubes, allowing the Velox boiler to generate steam at a high rate while maintaining a compact size. The key principle is that heat transfer increases when flue gas velocities exceed the speed of sound.
Surface Grinding Machine uses an abrasive grinding wheel to remove material from the surface of a workpiece for finishing. It consists of a base, work table, wheel head, and other parts. Each abrasive particle acts as a single cutting tool. Common abrasive materials are aluminum oxide, diamond, silicon carbide, and cubic boron nitride. It can produce a smooth, high precision surface and is useful for grinding tools, cutters, and other flat or cylindrical surfaces. However, it has limitations such as inability to grind in reverse and constant degradation of the grinding wheel.
Nickel electroplating provides benefits like increased corrosion resistance, improved hardness and strength, resistance to wear, and improved ductility. During nickel plating, nickel ions are reduced at the cathode through a reduction reaction, while the anode undergoes an oxidation reaction that dissolves metal. The thickness of a nickel plate coating is affected by applying direct current over time at a certain current density per unit area being plated.
Bloom, billet, slab, plate, sheet, strip are terms used in metalworking and manufacturing. Blooms undergo first breakdown of ingots through hot working and have a large cross sectional area. Billets are further reduced through hot rolling. Slabs are hot rolled ingots with a specific cross sectional area and width. Plates are thick products over 6mm, while sheets are thinner but wide, and strips are thin and narrow. Blooms, billets, and slabs are considered semi-finished products.
Lapping is a surface finishing process that uses loose abrasive powders at low speeds to achieve very tight tolerances of flatness, parallelism, thickness, or finish. It involves mixing abrasive particles with a liquid to form a slurry, placing the slurry on a rotating lap plate, and placing the workpiece against the slurry-coated plate so the abrasive grains can modify the workpiece surface through rolling/sliding contact. A lapped surface exhibits a dull, non-reflective appearance with multi-directional texture, especially for hard materials with surface roughness under 5 micro-inches.
Injection moulding is a manufacturing process that involves injecting material into a mould cavity. Common materials used include thermoplastics and thermosets. The injection moulding machine has components like a clamping unit, injection unit, mould, and heaters. It injects molten material into the mould, which then cools and hardens into the final shape before being ejected. Injection moulding is used to make a wide variety of plastic, rubber and metal parts.
This document discusses mechanical presses. It begins by defining a mechanical press as a machine that can perform cutting and non-cutting processes by applying force without removing chips from metallic or non-metallic sheets. It then outlines the main parts of a mechanical press, including the flywheel, clutch, brakes, driving mechanism, ram, and pitman. It classifies presses based on their power source, number of slides, and frame/construction. Finally, it states that mechanical presses are used for punching, stamping, forming, drawing, embossing, and bending operations in industries like automotive, aircraft, telecommunications, electrical appliances, and utensil making.
advantages of Hard chrome electroplatingrampal singh
油
Hard chrome electroplating involves applying a layer of chromium to a metal object through electroplating to provide benefits like reducing wear and damage from corrosion while increasing conductivity. The process starts with degreasing and cleaning the metal substrate before electroplating a hard chromium layer that is much more durable and provides superior hardness, lower friction, and improved anti-stick capabilities, making it suitable for applications involving drills, screws, taps and dies.
The document defines several key properties of fluids: density is defined as mass per unit volume and its SI unit is kg/m3; specific volume is the reciprocal of density and defined as volume per unit mass; specific gravity is the ratio of a fluid's density to a standard fluid like water, and is unitless; and specific weight is defined as weight per unit volume and has an SI unit of N/m3. The document also provides examples that water has a density of 1000 kg/m3 and mercury has a density of 13600 kg/m3.
The document discusses different definitions and goals of quality. It states that quality involves fitness for use, fitness for purpose, customer satisfaction, and conformance to requirements. It also defines quality as conformance to specifications according to Deming and conformance to requirements according to Crosby. Additionally, it defines quality as meeting customer needs and involving a company-wide system to ensure customer satisfaction at low cost through coordinated actions. Quality is also said to be inversely proportional to variations.
This document discusses different types of emissions from engines, including exhaust and non-exhaust emissions. It describes the key pollutants like unburnt hydrocarbons (HC), carbon monoxide (CO), oxides of nitrogen (NOx), particulate matter, and sulfur dioxide. The document explains the factors that influence emissions formation in spark ignition and compression ignition engines, such as fuel-air mixture, combustion temperature, and engine operating conditions. It also discusses the limitations of hydrocarbons and the processes that lead to HC and CO emissions from spark ignition engines.
Open Channel Flow is a book written by Rampal Singh, who holds a B.E. in Mechanical Engineering, M.Tech in Production Engineering, and has qualified three times for the Graduate Aptitude Test in Engineering (GATE). The book covers topics related to open channel flow, which is the flow of liquids in rivers, streams, and other channels where the free surface is exposed to the atmosphere.
The Zenith Carburetor has 8 main components: a float chamber, main line, main jet, compensating jet, starting jet, reservoir, choke, and throttle valve. It works by drawing fuel from the float chamber through the main jet at a low speed air to fuel ratio of 15:1. At high speeds, the compensating jet provides extra fuel required. During starting, the starting jet sprays fuel from the reservoir into the air above the throttle valve to form an 11:1 rich mixture, helping the engine start.
The document discusses engine performance and is authored by Rampal Singh, who has a B.E. in Mechanical Engineering, M.Tech in Production Engineering, and has qualified three times for GATE.
The document discusses the basics of fuel injection systems in compression ignition (CI) engines. It outlines the key objectives of a fuel injection system which are to meter the correct amount of fuel demanded based on engine load and speed, distribute fuel equally among cylinders, inject fuel at the proper timing and rate, and ensure proper atomization. It also provides details on the typical injection timing window and angle. To achieve these objectives, the key functional components are identified as the pumping element to transport fuel, a metering element to control the fuel supply, a metering control to adjust the metering based on load/speed, and a distribution element to divide fuel evenly among cylinders. Finally, it lists some common types of fuel injection systems used in
Coal handling in thermal power plants involves transporting large quantities of coal from sources via rail or ship, storing it on site, and moving it within the plant. Over 5 million tons of coal per year is typically needed for a 2000 MW plant. Coal is often transported via pipeline as a coal water slurry to avoid weather impacts, with booster pumps along the line. On site, coal is stored in compact heaps up to 12 meters high with drainage to prevent fires from spontaneous combustion. Inside the plant, large rotary car dumpers are commonly used to efficiently unload coal cars and transfer the coal to storage or direct feeding.
The carburetor mixes air and fuel for combustion in a petrol engine. It has several main components: the throttle valve controls the air-fuel mixture supplied to the engine; a strainer filters fuel particles; the venturi decreases air pressure to draw fuel from the float chamber, which maintains the fuel level; and the choke valve controls the air-fuel ratio for starting a cold engine.
Flow through circular pipes is known as viscous flow. Viscous flow occurs due to the viscosity of the fluid which causes friction between the fluid layers and the pipe wall. This friction causes the velocity of the fluid near the wall to reduce to zero while the maximum velocity occurs at the center of the pipe.
1. The first law of thermodynamics states that energy can be changed from one form to another, but cannot be created or destroyed. Heat and work are mutually convertible.
2. For a cyclic thermodynamic process, the net heat transfer equals the net work transfer. The first law must be satisfied at each step of the cycle.
3. Examples demonstrate using the first law to determine consistency of heat and work transfers for cyclic processes, and to calculate the magnitude and direction of heat transfer needed to satisfy the first law for a given work interaction and change in internal energy.
Generalised continuity equation in cartesian coordinate systemrampal singh
油
The document discusses the continuity equation in 3 dimensions. It was written by Rampal Singh, an Assistant Professor of Mechanical Engineering at Rai University in Ahmedabad, India. He holds a B.E. in Mechanical Engineering, an M.Tech in Production Engineering, and has qualified three times for the GATE exam.
Capillarity is the phenomenon where the interaction between a liquid and a solid results in liquid molecules escaping from the surface into the gas phase, lowering the vapor pressure. The vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid state. A lower vapor pressure results in a lower boiling temperature, while a higher vapor pressure increases the boiling temperature. Cavitation occurs when the pressure of a flowing liquid falls below its vapor pressure, resulting in the formation of vapor bubbles. There are two types of cavitation - inertial cavitation, where a bubble rapidly collapses producing a shock wave, and incipient cavitation, which is the beginning stage of cavitation before becoming destructive.
Capillarity refers to the ability of a liquid to flow in narrow spaces due to intermolecular forces between the liquid and surrounding solid surface. Capillarity occurs due to the balance between cohesive forces within the liquid and adhesive forces between the liquid and surrounding surface. There are two types of capillarity: capillary rise, where adhesion is greater than cohesion causing liquid to flow upward; and capillary fall, where adhesion is less than cohesion causing liquid to flow downward. The height of capillary rise or fall can be calculated based on properties of the liquid and surrounding material. Common examples of capillarity include the wicking of oil up a lamp wick and the absorption of ink into blotting paper.
Injection moulding is a manufacturing process that involves injecting material into a mould cavity. Common materials used include thermoplastics and thermosets. The injection moulding machine has components like a clamping unit, injection unit, mould, and heaters. It injects molten material into the mould, which then cools and hardens into the final shape before being ejected. Injection moulding is used to make a wide variety of plastic, rubber and metal parts.
This document discusses mechanical presses. It begins by defining a mechanical press as a machine that can perform cutting and non-cutting processes by applying force without removing chips from metallic or non-metallic sheets. It then outlines the main parts of a mechanical press, including the flywheel, clutch, brakes, driving mechanism, ram, and pitman. It classifies presses based on their power source, number of slides, and frame/construction. Finally, it states that mechanical presses are used for punching, stamping, forming, drawing, embossing, and bending operations in industries like automotive, aircraft, telecommunications, electrical appliances, and utensil making.
advantages of Hard chrome electroplatingrampal singh
油
Hard chrome electroplating involves applying a layer of chromium to a metal object through electroplating to provide benefits like reducing wear and damage from corrosion while increasing conductivity. The process starts with degreasing and cleaning the metal substrate before electroplating a hard chromium layer that is much more durable and provides superior hardness, lower friction, and improved anti-stick capabilities, making it suitable for applications involving drills, screws, taps and dies.
The document defines several key properties of fluids: density is defined as mass per unit volume and its SI unit is kg/m3; specific volume is the reciprocal of density and defined as volume per unit mass; specific gravity is the ratio of a fluid's density to a standard fluid like water, and is unitless; and specific weight is defined as weight per unit volume and has an SI unit of N/m3. The document also provides examples that water has a density of 1000 kg/m3 and mercury has a density of 13600 kg/m3.
The document discusses different definitions and goals of quality. It states that quality involves fitness for use, fitness for purpose, customer satisfaction, and conformance to requirements. It also defines quality as conformance to specifications according to Deming and conformance to requirements according to Crosby. Additionally, it defines quality as meeting customer needs and involving a company-wide system to ensure customer satisfaction at low cost through coordinated actions. Quality is also said to be inversely proportional to variations.
This document discusses different types of emissions from engines, including exhaust and non-exhaust emissions. It describes the key pollutants like unburnt hydrocarbons (HC), carbon monoxide (CO), oxides of nitrogen (NOx), particulate matter, and sulfur dioxide. The document explains the factors that influence emissions formation in spark ignition and compression ignition engines, such as fuel-air mixture, combustion temperature, and engine operating conditions. It also discusses the limitations of hydrocarbons and the processes that lead to HC and CO emissions from spark ignition engines.
Open Channel Flow is a book written by Rampal Singh, who holds a B.E. in Mechanical Engineering, M.Tech in Production Engineering, and has qualified three times for the Graduate Aptitude Test in Engineering (GATE). The book covers topics related to open channel flow, which is the flow of liquids in rivers, streams, and other channels where the free surface is exposed to the atmosphere.
The Zenith Carburetor has 8 main components: a float chamber, main line, main jet, compensating jet, starting jet, reservoir, choke, and throttle valve. It works by drawing fuel from the float chamber through the main jet at a low speed air to fuel ratio of 15:1. At high speeds, the compensating jet provides extra fuel required. During starting, the starting jet sprays fuel from the reservoir into the air above the throttle valve to form an 11:1 rich mixture, helping the engine start.
The document discusses engine performance and is authored by Rampal Singh, who has a B.E. in Mechanical Engineering, M.Tech in Production Engineering, and has qualified three times for GATE.
The document discusses the basics of fuel injection systems in compression ignition (CI) engines. It outlines the key objectives of a fuel injection system which are to meter the correct amount of fuel demanded based on engine load and speed, distribute fuel equally among cylinders, inject fuel at the proper timing and rate, and ensure proper atomization. It also provides details on the typical injection timing window and angle. To achieve these objectives, the key functional components are identified as the pumping element to transport fuel, a metering element to control the fuel supply, a metering control to adjust the metering based on load/speed, and a distribution element to divide fuel evenly among cylinders. Finally, it lists some common types of fuel injection systems used in
Coal handling in thermal power plants involves transporting large quantities of coal from sources via rail or ship, storing it on site, and moving it within the plant. Over 5 million tons of coal per year is typically needed for a 2000 MW plant. Coal is often transported via pipeline as a coal water slurry to avoid weather impacts, with booster pumps along the line. On site, coal is stored in compact heaps up to 12 meters high with drainage to prevent fires from spontaneous combustion. Inside the plant, large rotary car dumpers are commonly used to efficiently unload coal cars and transfer the coal to storage or direct feeding.
The carburetor mixes air and fuel for combustion in a petrol engine. It has several main components: the throttle valve controls the air-fuel mixture supplied to the engine; a strainer filters fuel particles; the venturi decreases air pressure to draw fuel from the float chamber, which maintains the fuel level; and the choke valve controls the air-fuel ratio for starting a cold engine.
Flow through circular pipes is known as viscous flow. Viscous flow occurs due to the viscosity of the fluid which causes friction between the fluid layers and the pipe wall. This friction causes the velocity of the fluid near the wall to reduce to zero while the maximum velocity occurs at the center of the pipe.
1. The first law of thermodynamics states that energy can be changed from one form to another, but cannot be created or destroyed. Heat and work are mutually convertible.
2. For a cyclic thermodynamic process, the net heat transfer equals the net work transfer. The first law must be satisfied at each step of the cycle.
3. Examples demonstrate using the first law to determine consistency of heat and work transfers for cyclic processes, and to calculate the magnitude and direction of heat transfer needed to satisfy the first law for a given work interaction and change in internal energy.
Generalised continuity equation in cartesian coordinate systemrampal singh
油
The document discusses the continuity equation in 3 dimensions. It was written by Rampal Singh, an Assistant Professor of Mechanical Engineering at Rai University in Ahmedabad, India. He holds a B.E. in Mechanical Engineering, an M.Tech in Production Engineering, and has qualified three times for the GATE exam.
Capillarity is the phenomenon where the interaction between a liquid and a solid results in liquid molecules escaping from the surface into the gas phase, lowering the vapor pressure. The vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid state. A lower vapor pressure results in a lower boiling temperature, while a higher vapor pressure increases the boiling temperature. Cavitation occurs when the pressure of a flowing liquid falls below its vapor pressure, resulting in the formation of vapor bubbles. There are two types of cavitation - inertial cavitation, where a bubble rapidly collapses producing a shock wave, and incipient cavitation, which is the beginning stage of cavitation before becoming destructive.
Capillarity refers to the ability of a liquid to flow in narrow spaces due to intermolecular forces between the liquid and surrounding solid surface. Capillarity occurs due to the balance between cohesive forces within the liquid and adhesive forces between the liquid and surrounding surface. There are two types of capillarity: capillary rise, where adhesion is greater than cohesion causing liquid to flow upward; and capillary fall, where adhesion is less than cohesion causing liquid to flow downward. The height of capillary rise or fall can be calculated based on properties of the liquid and surrounding material. Common examples of capillarity include the wicking of oil up a lamp wick and the absorption of ink into blotting paper.
Deep Learning for Image Processing on 16 June 2025 MITS.pptxresming1
油
This covers how image processing or the field of computer vision has advanced with the advent of neural network architectures ranging from LeNet to Vision transformers. It covers how deep neural network architectures have developed step-by-step from the popular CNNs to ViTs. CNNs and its variants along with their features are described. Vision transformers are introduced and compared with CNNs. It also shows how an image is processed to be given as input to the vision transformer. It give the applications of computer vision.
For any number of circumstances, obsolescence risk is ever present in the electronics industry. This is especially true for human-to-machine interface hardware, such as keypads, touchscreens, front panels, bezels, etc. This industry is known for its high mix and low-volume builds, critical design requirements, and high costs to requalify hardware. Because of these reasons, many programs will face end-of-life challenges both at the component level as well as at the supplier level.
Redesigns and qualifications can take months or even years, so proactively managing this risk is the best way to deter this. If an LED is obsolete or a switch vendor has gone out of business, there are options to proceed.
In this webinar, we cover options to redesign and reverse engineer legacy keypad and touchscreen designs.
For more information on our HMI solutions, visit https://www.epectec.com/user-interfaces.
Complete University of Calculus :: 2nd editionShabista Imam
油
Master the language of change with the Complete Guidance Book of Calculusyour comprehensive resource for understanding the core concepts and applications of differential and integral calculus. Designed for high school, college, and self-study learners, this book takes a clear, intuitive approach to a subject often considered challenging.
May 2025: Top 10 Read Articles in Data Mining & Knowledge Management ProcessIJDKP
油
Data mining and knowledge discovery in databases have been attracting a significant amount of research, industry, and media attention of late. There is an urgent need for a new generation of computational theories and tools to assist researchers in extracting useful information from the rapidly growing volumes of digital data.
This Journal provides a forum for researchers who address this issue and to present their work in a peer-reviewed open access forum. Authors are solicited to contribute to the Journal by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in the following areas, but are not limited to these topics only.
Generative AI & Scientific Research : Catalyst for Innovation, Ethics & ImpactAlqualsaDIResearchGr
油
Invited keynote at the Artificial Intelligence Symposium on AI-powered Research Innovation, taking place at ENSEM (L'cole Nationale Sup辿rieure d'lectricit辿 et de M辿canique), Casablanca on June 21, 2025. Ill be giving a keynote titled: "Generative AI & Scientific Research: Catalyst for Innovation, Ethics & Impact". Looking forward to engaging with researchers and doctoral students on how Generative AI is reshaping the future of science, from discovery to governance with both opportunities and responsibilities in focus.
#AI hashtag#GenerativeAI #ScientificResearch #Innovation #Ethics #Keynote #AIinScience #GAI #ResearchInnovation #Casablanca
1. Thinking, Creative Thinking, Innovation
2. Societies Evolution from 1.0 to 5.0
3. AI - 3P Approach, Use Cases & Innovation
4. GAI & Creativity
5. TrustWorthy AI
6. Guidelines on The Responsible use of GAI In Research
This covers traditional machine learning algorithms for classification. It includes Support vector machines, decision trees, Naive Bayes classifier , neural networks, etc.
It also discusses about model evaluation and selection. It discusses ID3 and C4.5 algorithms. It also describes k-nearest neighbor classifer.
Deep Learning for Natural Language Processing_FDP on 16 June 2025 MITS.pptxresming1
油
This gives an introduction to how NLP has evolved from the time of World War II till this date through the advances in approaches, architectures and word representations. From rule based approaches, it advanced to statistical approaches. from traditional machine learning algorithms it advanced to deep neural network architectures. Deep neural architectures include recurrent neural networks, long short term memory, gated recurrent units, seq2seq models, encoder decoder models, transformer architecture, upto large language models and vision language models which are multimodal in nature.
Microwatt is a lightweight, open-source core based on the OpenPOWER ISA.
Its designed for FPGAs and easy experimentation in chip design.
Ideal for education, prototyping, and custom silicon development.
Fully open, it empowers developers to learn, modify, and innovate.
Introduction to Natural Language Processing - Stages in NLP Pipeline, Challen...resming1
油
Lecture delivered in 2021. This gives an introduction to Natural Language Processing. It describes the use cases of NLP in daily life. It discusses the stages in NLP Pipeline. It highlights the challenges involved covering the different levels of ambiguity that could arise. It also gives a brief note on the present scenario with the latest language models, tools and frameworks/libraries for NLP.