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محاضرات مرئية رائعة لمهندسى الفلزات

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    islamiccastel
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    محاضرات مرئية رائعة لمهندسى الفلزات



    محاضرات مرئية رائعة لمهندسى الفلزات "نسألكم الدعاء"

    Moving Pictures




    Aeroengines



    Brazing

    Bridges

    Casting

    Crystallography

    Dislocations and Interfaces

    Energy

    Fatigue

    Floods

    Kinetics and Microstructure

    Lectures

    Martensite and Bainite

    Melt Spinning

    • Melt spinning and rapid solidification.The movie is reproduced with permission from Mark Jolly who did the original research in Cambridge University. Thanks also to John Leake, Lindsay Greer, Zoe Barber and Brian Barber for providing the electronic version
    Metallography

    • A series of movies to help revise metallography. The larger movies have longer dwell times on individual images in order to allow a teacher to describe the image. The movies are produced by Roz Williams and Harry Bhadeshia, converted into electronic format by Brian Barber.
    • Annealing twins (austenitic steel), mechanical twins (zinc), mechanical twins (explosively deformed iron), martensite and retained austenite, shape deformation due to martensite, aluminium-silicon casting alloys, sodium-modified Al-Si and metallic superconductors.
    • (a) 10 Mb, (b) 4 Mb, (c) 2 Mb,
    • Cast irons: flake, spheroidal, white cast iron, cam and cam shaft, nickel-hard iron, and silal.
    • (a) 10 Mb, (b) 4 Mb, (c) 2 Mb,
    Modelling Project

    Neural Networks

    • Quicktime movie showing the function z=0.8[tanh(nx-2) + tanh(x2-n)+tanh ny+2) + tanh(y2-n)+1], which is a neural network of two inputs x and y, with four hidden units.
    Offshore Structures

    Open Course Materials Project

    Plough

    Ships

    Steam Engine

    Superalloys

    Surface Hardening

    Titanium Metallurgy

    Train

    Welding, Cutting and Drilling


  2. [2]
    هانى شرف الدين
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    تاريخ التسجيل: Nov 2005
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    وسام الشكر

     وسام كبار الشخصيات

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    islamiccastel
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    islamiccastel
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    هذه الباقه الثانية

    هذه الباقه الثانية

    وتتعلق بعمليات تصنيع الصلب من الألف للياء

    Friday May 28
    <LI class=stdlist>
    f01-friday-audio-location.wmv (400k) Donald introduces his three guests from this morning's audioconference, held outside the melting plant, at New Zealand Steel's Glenbrook Mill.
    <LI class=stdlist>
    f02-melter-electrodes.wmv (2.4mb) The electrodes that provide electricity for the melter are big. Not just big, huge. And there are six of them! In this video watch carefully and you'll see the electrode - yes that large cylinder next to Hoani - move slowly up and down. What is the current travelling between each pair of electrodes?
    <LI class=stdlist>
    f03-melter-feeding.wmv (2.4mb) High above the melter - on the same level as the electrodes - are containers that feed the melter with the reduced primary concentrate (RPCC). The RPCC is the reduced iron sand from the rotary kilns- now iron in a powder form along with char (carbon from the coal). This mixture is fed automatically into hoppers above the melter, in 20 tonne containers.
    <LI class=stdlist>
    f04-melter-roof.wmv (1.6mb) Donald and Hoani are on the roof of the melter. Hoani describes what you can see: the electrodes, the gas offtake and the screw feeder body which feeds the reduced primary concentrate (RPCC) into the melter.
    <LI class=stdlist>
    f05-metal-side1of4-taphole-before-tapping.wmv (1.4mb) On the metal side of the melter (the side the iron is taken from) Randall explains how the molten iron will be removed from the melter. The iron comes out of the tap hole and flows down the launder (a drain) into a ladle. Why is the gas flame being directed onto the launder?
    <LI class=stdlist>
    f06-metal-side2of4-mudgun-and-mud.wmv (1mb) Randall shows how the tap hole is closed off to stop the molten iron flowing. What are the special properties of this mud?
    <LI class=stdlist>
    f07-metal-side3of4-taphole-monitoring-lancing-ladles.wmv (3.8mb) Stand back! Randall explains as the melter is tapped and molten iron flows into the ladle. During the process a sample of iron is taken, the temperature of the molten iron is taken, and the tap hole is lanced with pure oxygen. Eventually a kress appears to take the ladle to the weighbridge and then to the steel plant. How long does it take to fill one ladle?
    <LI class=stdlist>
    f08-metal-side4of4-diverting-to-second-ladle-weighing-the-ladle.wmv (3.1mb) The first ladle is full and the sand dam has to be broken to allow the molten iron to drain into the second ladle. Why is there lots of fumes?
    <LI class=stdlist>
    f09-slag-side1of3-taphole-before-tapping.wmv (2.3mb) On the slag side of the melter (the side opposite the metal side) where slag is removed, Randall shows us how the tap hole is opened with a rock drill, to allow slag to drain down the short launder (drain) and into the bowl below, and then how the tap hole is closed with the mud gun.
    <LI class=stdlist>
    f10-slag-side2of3-taphole-lancing-and-mudgun.wmv (3.6mb) Dressed like Darth Vader, Randall manages the flow of slag down the launder into the bowl (below us). To unblock the tap hole Randall drives a lance into the hole blowing oxygen into the hole. Why does the molten slag not flow as well as molten iron? Finally Randall closes the tap hole with the mudgun.
    f11-slag-side3of3-kress-taking-bowl-away.wmv (640k) The kress arrives to pick up the slag bowl. How fill is the bowl?
    Thursday May 27
    <LI class=stdlist>
    These first set of movies Step 1 to Step 11 show the process of making sponge Iron from primary concentrate (pure Iron sand) and coal (with lime).
    <LI class=stdlist>
    th01-step1-coal-receiving.wmv (920k) A key ingredient for making steel is coal. It arrives right where Donald is standing, by train. Lime is dropped off here to. How many trains a day bring coal? How many bring lime? Where does the coal come from?
    <LI class=stdlist>
    th02-step2-coal-receiving-stockpiles.wmv (1.2mb) Updated Grant Thompson Kiln Area Manager explains how lime and coal are mixed in these stockpiles, before being sent to the multi hearth furnace (MHF) be conveyor.
    <LI class=stdlist>
    th03-step3-slurry-pipe.wmv (1.2mb) Yesterday Donald saw the slurry pipe leaving the Waikato Head Mine. In the pipe concentrated Iron ore is pumped with water, 15 km here to the mill. Grant explains where the pipe goes to next and how the water is removed.
    <LI class=stdlist>
    th04-step4-dewatering-slurry.wmv (860k) How simple! Here you can see the water being removed from the slurry leaving dry Iron concentrate now called Primary Concentrate (PC). What causes the water to be removed?
    <LI class=stdlist>
    th05-step5-water-treatment.wmv (650k) The water removed has to be cleaned before being returned to local streams. Here Grant explains how chemicals are added to make the muddy sediments (called slimes) stick together so they can be screened out. This is called flocculation.
    <LI class=stdlist>
    th06-step6-pc-reclaiming-pile.wmv (1.7mb) Grant shows us the huge stockpile of Primary Concentrate (concentrated Iron sand) that comes from the dewatering plant. Then Donald goes underneath the stockpile to where the PC is 'reclaimed' and sent by conveyor to the multi hearth furnace (MHF).
    <LI class=stdlist>
    th07-step7-conveyor-belts-to-the-mhf.wmv (1mb) Where would the Mill be without conveyor belts? Donald follows two large conveyors, one carrying coal+lime the other Primary Concentrate as they head for the Multi Hearth Furnace. However only one conveyor actually enters the very top of the Multi Hearth Furnace. Donald explains.
    <LI class=stdlist>
    th08-step8-multi-hearth-furnace.wmv (1.6mb) You can't see the 12 hearths of the Multi Hearth Furnace (MHF) but you can see the hot pans on the conveyor carrying the Carbon, Calcium oxide and hot dry Iron oxide. The furnace gets very hot so a shower is available as a safety device. Grant checks it out!
    <LI class=stdlist>
    th09-step9-rotary-kiln-entry.wmv (670k) Alister a Kiln Operator explains how the product from the pan conveyor (straight from the multi hearth furnace) is added to the top of the rotary kiln.
    <LI class=stdlist>
    th10-step10-rotary-kiln.wmv (1.6mb) Donald takes a walk with Alister along the walkway 15m above the ground beside the rotary kiln. What length is the kiln? What is the Iron oxide (dry sand) changed into during its passage through the kiln? What is the concentration of the pure Iron?
    <LI class=stdlist>
    th11-step11-sponge-iron-produced.wmv (1.4mb) At the end of the kiln temperatures are high. How high? The Iron at this stage is a fine powder that you can see falling down through the flames. The fine powder is called sponge Iron because every small particle, seen under a microscope has tiny holes in it.
    <LI class=stdlist>
    th12-monitoring-stack-gases.wmv (560k) Today two workers are high up on one of the chimneys (stacks). What are they doing?
    <LI class=stdlist>
    th13-scrubbing-gases.wmv (1.5mb) Dick Parsons explains that gases from combustion of coal are scrubbed to remove sulphides and other poisonous gases. How is this done?
    <LI class=stdlist>
    th14-water-outlet.wmv (1.2mb) Debbie Bryson explains to Donald her responsibilities to monitor any effects of the Mill on the environment.
    th15-manukau-harbour-outfall.wmv (1.5mb) Debbie explains what happens to the treated water before it is discharged into the Manukau Harbour. What percentage of water is recycled?
    Wednesday May 26
    <LI class=stdlist>
    w01-intro-to-mine-site.wmv (1.4mb) Donald asks Dick Parsons, Engineer and Mike O'Connell, Mine Manager to introduce themselves at the Waikato North Head Mine.
    <LI class=stdlist>
    w02-origin-of-iron-sand.wmv (1.3mb) Donald asks Mike O'Carroll to explain how the iron sand came to be at Waikato North Head. Where did the iron sand originate from?
    <LI class=stdlist>
    w03-audio-location.wmv (570k) Donald's guests Mike O'Connell, Mine Manager and Dick Parsons, Engineer answered questions from students at Hornby High School during the today's audioconference Where was Donald today?
    <LI class=stdlist>
    w04-bucket-excavator-closeup.wmv (2.3mb) The start of the mining operation is at the coal-face - well sand face really!. How many tonnes of sand can the excavator mine in an hour? Mike O'Connell explains.
    <LI class=stdlist>
    w05-bucket-loader-in-operation.wmv (1.7mb) The bucket wheel excavator is am impressive sight when in operation. The excavator sends sand to the first belt wagon then the second belt wagon then to the bench conveyor and on to the processing plant.How many conveyor belts can you see in use here?
    <LI class=stdlist>
    w06-belt-wagons.wmv (2.1mb) Mike O'Connell explains how the belt wagons help get sand away from the excavator and up to the conveyors to the processing plant.
    <LI class=stdlist>
    w07-excavator-power-supply.wmv (510k) Big machinery needs heaps of power! The excavators and belt wagons are electrically driven. What voltage arrives at the excavator? What voltage do the transformers reduce it to for use in the motors?
    <LI class=stdlist>
    w08-mining-benches.wmv (550k) Mike O'Connell explains how the mining operation works through the old dunes. You can see the Tasman Sea in the distance.
    <LI class=stdlist>
    w09-iron-sand.wmv (2.6mb) Donald gets close to a cross section of a sand dune created by the mining operation. How did this sand get here? Can you see evidence of this?
    <LI class=stdlist>
    w10-rough-magnetic-separators.wmv (730k) Stage 1 of the ore concentrating process uses large magnets to separate the magnetic material from the slurry.
    <LI class=stdlist>
    w11-cone-separators.wmv (1.8mb) Stage 2 of the ore concentrating process uses the fact that the iron materials are heavier than the waste materials (tailings).
    <LI class=stdlist>
    w12-spiral-separators.wmv (820k) Stage 3 of the ore concentrating process throws low grade material to the outside of the spiral and the heavier ore sticks to the inside. Simple eh!
    <LI class=stdlist>
    w13-cleaner-magnets.wmv (650k) Stage 3 of the ore concentrating process uses magnetism again to finally concentrate the ore before it ends up on the stockpile.
    <LI class=stdlist>
    w14-stockpile.wmv (870k) The concentrated ore (titano-magnetite) with the water removed, falls onto the stockpile. Beneath this huge pile is yet another conveyor that takes the sand to a mixing station where it is combined with water before the 18km journey through a pipe to the steel mill.
    <LI class=stdlist>
    w15-tailings.wmv (1.6mb) Mike O'Connell explains what happens to the sand that is left after the iron ore is removed. Where does it go?
    <LI class=stdlist>
    w16-what-happens-to-the-tailings.wmv (370k) Having been through the processing plant, Donald had to ask - what did happen to the tailings?
    <LI class=stdlist>
    w17-water-use.wmv (560k) From the stockpile is a large lake. Mike explains that the lake is an important part of the mine site.
    <LI class=stdlist>
    w18-compass-and-magnet.wmv (1.4mb) Earlier in the day Donald held a handful of iron sand near a compass. The unprocessed sand shifted the compass needle about 2 degrees. What effect does a handful of concentrated iron ore from the stockpile have on the compass? How does it react to Donald's magnet?
    <LI class=stdlist>
    w19-slurry-pipeline.wmv (1.1mb) On the road between the North Waikato Head mine site and the Glenbrook steel mill are signs like this one. Donald asks Dick Parsons to explain the significance of the slurry pipeline - a world first.
    w20-eating-away-the-bench.wmv (1.8mb) Mike O'Connell explains how the benches are created during the process of mining the iron sands. The huge machinery makes a new landscape, later to be backfilled with the mine tailings. Why does the bucket wheel excavator sometimes work more slowly? Why is the iron sand sometimes a reddish colour, other times a dark grey?


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  5. [5]
    islamiccastel
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    الباقة الثالثة

    الباقة الثالثة بعنوان

    Manufacturing Videos


    Introduction
    Cool Honda advertisement About the Honda advertisement
    Dislocation motion
    Plastic deformation
    Tensile test / Screw dislocation
    Component deformation
    Types of heat transfer
    Heat transfer in a rod
    Disk brake
    Fluid flow past a cylinder
    Pencil manufacture
    Ball bearing crystal model

    Casting
    Metal pouring
    Induction melting of metal
    Mold filling movie
    Investment casting
    Lost foam filling movie
    Casting filling animation
    Horizontal centrifugal casting
    Horizontal centrifugal casting
    Vertical centrifugal casting
    Filling of spiral test mold
    Hot chamber die casting
    Cold chamber die casting
    Cold chamber die casting
    Cold chamber die casting
    Squeeze casting
    Directional solidification
    Dendrite growth
    Blast furnace animation
    Continuous casting - (1) melting and solidification operations
    Continuous casting - (2) rolling operations

    Deformation Processing
    Open die forging
    Closed die forging
    Hammer forging
    Forging machine animation
    Wrench forging animation
    Upsetting (heading)
    Heat treating
    Rolling
    Rolling
    Rolling
    Drawing
    Slinky manufacture

    Sheet Metal Forming
    V-die bending simulation
    V-die bending simulation
    Air bending simulation
    Wiping die simulation
    Wiping die springback simulation
    Wiping die springback movie
    Dies
    Types of dies
    Types of presses
    Plasma punch press
    U-joint animation
    Tube bending
    Tube bending
    Stamping FEM
    Hydroforming
    Hydroforming of sphere FEM
    Hydroforming of joint FEM
    Hydroforming of shaft FEM

    Machining
    Orthogonal cutting
    Card model of shear plane
    Chatter
    Shear strain animation 1
    Shear strain animation 2
    Hitch ball turning
    Microturning
    Chip formation
    Machining temperature animation
    Tool materials
    Tool geometry
    Milling
    Micromilling
    Hole drilling
    Tapping
    Grinding wheels
    Grinding

    Introduction to machining : Introduces turning, milling and drilling operations
    Wedge shape tool: Shows how all cutting tools have the basic wedge shape
    Cutting action, basic tool geometry and shear plane: Shows the necessity of clearance and rake angles, and the presence of shear plane in machining
    Rake angle and effect on power: Demonstrates how power required for machining varies with the rake angle and why very high rakes are not desirable
    Cutting tool geometry: Shows all the required angles in a cutting tool
    Drilling tool geometry: Shows important angles in a drill bit

    Non-traditional processing
    Water jet cutting
    Water jet cutting movies
    Electrical discharge machining
    Wire electrical discharge machining
    Plasma punch
    Photo etching

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  7. [7]
    islamiccastel
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    تاريخ التسجيل: Jan 2007
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    Joining

    Resistance welding
    Ultrasonic welding of metal
    Ultrasonic welding of plastic
    Shielded gas arc welding
    Weld pool animation
    Arc welding fume formation
    Plasma welding
    Pulsed gas metal arc welding
    TIG (Tungsten Inert Gas) welding
    Laser welding
    Laser welding of spark plug
    Nb:YAG (Niobium-Yttrium-Aluminum-Garnet) laser welding
    Friction welding
    Friction welding
    Friction stir welding
    Friction stir welding
    Brazing

    Polymers
    Injection molding
    Injection molding
    Injection molding animation
    Injection molding clamp animation
    Lego manufacture
    Collapsible core injection mold
    Expandable cavity injection mold
    Extrusion
    PVC window frame extrusion
    Co-extrusion and Blown film extrusion
    Extrusion blow molding
    Extrusion blow molding
    Blow molding animation
    Blow molding video
    Transfer molding
    Rotational molding
    Static mixer
    CD
    CD-R burner
    CD-RW burner
    Weldline genesis
    Polaroid sunglasses
    How Polaroid sunglasses work
    Plastic slinky manufacture
    Draft bottle widget
    Draft can widget

    Composites
    Composites manufacturing
    Vacuum bagging
    Pultrusion animation
    Filament winding animation
    McLaren F1 car manufacture

    Powder
    Powder pressing
    Powder pressing animation

    Rapid Prototyping
    Stereolithography
    Stereolithography
    Stereolithography animation
    Selective laser sintering
    Fused deposition modeling
    Layered object modeling
    Layered object modeling
    Speed part
    Rapid injection mold tooling
    Soft tooling

    Integrated Chip Manufacture
    Silicon wafer manufacture
    Microelectronic chip manufacture
    Semiconductor theory
    Semiconductor manufacturing
    What is a clean room?
    History of the Integrated Circuit
    Integrated circuit manufacture game
    US Government National Nanotechnology Initiative
    Digital Light Projector

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    islamiccastel
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    islamiccastel
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    الباقة الرابعة


    WELDING



    Super Alloy 1

    Videos

    Pot Metal Door Handle Repair (1:46)
    Pot Metal Headlight Trim Repair (2:53)
    Eliminate Warpage in Steel Side Panels (1:09)
    Joining Brass to Aluminum (2:35)
    Joining Copper to Aluminum (1:40)
    Repairing Brass Radiator Tanks (:45)
    Joining Copper Tubing to Aluminum Tubing (1:17)
    How to Fill Pot Metal Pits (:55)
    Air Charge Cooler Repair (:45)
    How to Join 2 Pieces of Broken Pot Metal (1:00)
    Repairing Multiple Aluminum Radiator Holes (3:13)
    How to Fill Gaps in Pot Metal (:50)
    An Aluminum Radiator with a 1/8" Hole in the Tube (:29)
    A Pot Metal '67 GTO Console Piece with a Peg Missing (:40)
    A '67 GTO Console Piece with a 1/8" Tear in the Pot Metal (:29)


    Super Alloy 5

    Videos

    ATV Radiator Repair (2:00)
    Thick to Thin Aluminum Repair (1:36)
    How to Fill Holes in Aluminum (1:10)
    Cast Aluminum Intake Manifold (2:06)
    Aluminum A/C Return Loop Repair (:50)
    Aluminum Transmission Case Repair (3:00)
    Bumper Reinforcement Repair (2:40)
    Vertical Radiator Repair (:34)
    Brazing vs. Soldering (:45)
    Joining Aluminum Plates (1:50)
    Filling Aluminum Gaps (:55)
    Super Alloy 5 Strength (:40)
    Joining Aluminum A/C Fittings (1:20)
    Multiple A/C Line Holes (2:15)
    Aluminum Boat Repair (:55
    )Aluminum A/C Fittings (1:29)
    Aluminum Boat Repair #2 (1:59)
    Repairing Aluminum Puncture Holes (:53)

    SSF-6 Silver Solder

    Videos

    Repairing Stainless to Stainless (1:06)
    Repairing Steel to Steel (2:03)
    Cast Iron Exhaust Manifold Repair (1:40)
    Joining 2 Pieces of Brass (1:25)
    Joining Stainless to Brass (1:00)
    Hydraulic Hose Repair (1:50)
    Bobcat Oil Pan Repair (1:00)
    Copper A/C Condenser Repair (:38)


    Cool Blue Heat Paste

    Videos

    How to Use Cool Blue Heat Paste (1:00)
    Protect Heat Sensitive Surfaces (1:15)
    Fishing Pole Repair (1:45)
    Eliminate Warpage in Auto Body Applications (1:55)



    Cast Iron

    Cummins Exhaust Manifold Repair with 72 & 77 (3:45)
    Ornamental Fireplace Stand Repair (1:46)
    Cast Iron Blower Repair (2:23)

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