Flashcards
Untitled
Cards in this deck (107)
- 1Stress at centerline in the die causing craks to develop in the center.Hydrostatic Tensile Stress
- 2How are extrusion defects decreased?Increasing extrusion ratio and friction
- 3How are extrusion defects increased?Increasing die angle and amount of impurities
- 4Longitudinal scratches, die marks or folds in the material during extrusionSeam Defect
- 5What is land?the final desired diameter. Lowest point on a die with desired shape
- 6How are tubes extruded?Impact extrusion
- 7Can tubes be drawn?Yes
- 8What is more important with drawing tubes to increase tool life during extrusion?Lubricant
Temperature
Force - 9Low die temp causes material to stick to the die landBambooing
- 10Maxiumum size of rolls or plates in sheet metals6mm
- 11the slug is scrappunching
- 12the slug is the good partblanking
- 13punching holes in sheet metalperforating
- 14removing pieces from the edge of sheet metalnotching
- 15can opener blades to cut may or may not go to edge of sheet metalSLitting
- 16straight punch move rapidly to create slots in sheet metalnibbling
- 172-8 percent of sheet thickness as clearance between halvespunching
- 18placed to reduce amount of force required when punchingshear angle
- 19Progressive dies are during Sheet metal applicationspunching
blanking
notching - 20what surface is stretching?outer
- 21what surface is compressioninner
- 22a workpiece relaxing after being bentSpring Back
- 23Blank pulls into diedeep drawing
- 24rubber diaphragm filled with liquidHydro forming
- 25performing of parts with a mandrel with tools and rollersspinning
- 26sheet metal clamped over a die and lowered into water tankExplosive Forming
- 27head travels cast iron or steel shot used aircraft wingspeen forming
- 283 things that influence spring backElastic Modulus
Yield Stress
Ratio of bend radius to thickness - 29in sheet metal when deep drawing the edges become wavyearing
- 30arranging parts for optimum useNesting
- 31produce small metal parts and components processMicroforming
- 32Porosity is controlled inPowder Metallurgy
- 33Melt dropped through hole with gas blown to form powderAtomization Gas
- 34PM made with liquid waterWater Melt
- 35EIGAElectrode Induction Gas Atomization
- 36electrode pushed against rodElectrode Induction Gas Atomization
- 37melt dropped into spinning diskcentrifugal
- 383 ways mill for crushingattritot, pan and rolling
- 39Grinding for PMComminution
- 40Ball rolling hammer PMComminution
- 41what is the process that seperates the PM into sizesScreening
- 42mixing different metals to get desired propertiesBlending
- 43id desnity varies for PM what is neededmultipart die
- 44PM fed into roll gap in a rolling mill to produce stripsPowder Rolling
- 45What is the defect for roll compaction in PM?Hollow grains
- 46hydrstatic prussure added to PMIsostatic Pressuring
- 47Heating PM below melting point to allow bondingSintering
- 48PM has highTooling Cost
- 49Hard to storePM
- 50Large components on large scale not good forPM
- 51temp of metal flow nozzle sizeatomization
- 52spherical spongy porous angularReduction
- 53purest powders availableElectrlytic Deposition
- 54Pure, dnse, small , spherical powdersCarbonyls
- 55Up to 20% shrinkageCeramic dry machining
- 56Ceramics begin sintering at what degrees?600 celsius
- 57heating up ceramics can takeweeks or days
- 58what does wetting agent do?Improve mixing
- 59makes th mixture more plastic and formableplasticizer
- 60change electrical particle on the clay so that particle repelDeffloculent
- 61controls thickness of ceramic sheetDoctor Blade
- 62improves quality, shape, density and compaction of ceramicsIsostatic Pressing
- 63produce hollow cup shape, formed by templates or rollersJiggering
- 64FLoat Method Temp1150 C / 2100 F
650 C 1200 F - 65Diameter of glass wool fibers20 to 30 mm
- 66spinning solution through multi hole dieswet spinning
- 673 things for molding operationTime
Temp
Pressure - 68polymers deformed with applied pressureMelt processing
- 69largest production process for plasticsexstrusion
- 70Extruding plastics length of screw5 to 30
- 71Barrel Diameter range in extruder25mm to 200mm
- 72extruding two or more polymers in a single diecoextrusion
- 73Injection Molding Rated byCapacity of Mold
Clamping Pressure of die - 74RAMRecprocating Plunger
- 75Injection of plastic around metalInsert Injection Molding
- 76parisonextruded tub for blow molding
- 77continuos tube blown into shapeExtrusion Blow Molding
- 78Preform moldined and then transferred to blow mold dieInjection Blow Mold
- 79mold heated and rotated for large hollow partsRotational Molding
- 80In a foam molding process beand s expand to how much?50 times original size
- 81rolling plastics and compositesCalendering
- 82liquid polymer used in rotational moldingPlastisol
- 83preimpregnated with ResinPrepreg
- 84Thin sheets arethermoplastics
- 85workpiece is made with a anodeElectrochemical Machining
- 86What does EDM stand forElectrical Discharge Machine
- 87cathode and workpiece submerged into dielectric flugidEDM
- 88Electrodes are usually made of what?Graphite
- 89what voltage is applied to EDM300-1000
- 90EDm where electrode is penetrated into workpieceRAM EDM
- 91wire acts like a band sawwire edm
- 92wire is used to drill holesElextrical Discharge Drilling
- 93Plasma beam is inonized gasinoized gas
- 94plasma beam can cut how thick6 inches
- 95Direct Metal DepositionDMD
- 96DMD has a small heat effectedzone
- 97Used to repair or reconfiuger dies and moldsDMD
- 98cooling lines that arap around partconformal cooling
- 99copper and conformal cooling is used in what processDMD
- 100Produces metal rapid prototypingDMD
- 101SLSSelective Laser SIntering
- 102slslasers and the places powder
- 103LOMLaminated Object Manufacturing
- 104sliced out of inexpsive materials like paperLaminated Object Manufacturing
- 105building of layersFDM
- 106FDMFused Deposition Model
- 107thickness of virtual proto.1 to .5
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- Flashcards on Untitled, created by Melissa Pace on 08/05/2017.
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- Melissa Pace
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