Transcription
Metal WorkingProcesses, Tools,and Machines(sheet and small section steel)Eng. Bob FairchildCHAB Stove CampThe Farm Sept 2012
“Raw” Materials Plain steel sheetGalvanized steel sheet – flat, corrugated, d-ribStainless steel sheetPlain steel rod, rebar, bar, angleSlotted angleExpanded metalHardware clothSteel pipe, conduit
Why Steel? CheapDurableTakes high temperaturesNot too difficult to workStainless - takes heat better but is harder and muchmore expensive and less heat conductive
“Processed” materials StovepipeSteel bucketsSteel drums/barrelsStainless steel “Cornys”Pots and bowlsCast iron grates
Measuring and Marking Scale/rulerTape measure (length and diameter)SquareProtractorScribe (w or w/o blacking and bluing)Pens, pencilsDividers/compassSnap punchCenter punchSheet metal gauge
Measuring tools
Marking tools
Making Holes “Church key” can openerTwist drills (lousy in sheet metal)Step drills (great in sheet metal) –smallHole saws (bimetal and carbide teeth) - largeHollow punchesHand punchesKnockout punchesFoot lever punches
Twist drillsStep drills
Hole sawsBimetalCarbide
Hollow punchesHand punches
Knockout punchesFoot lever punch
CuttingHammer and chiselHand and power snipsHand and power nibblershand notchersHand and foot lever notchersSlotted angle shearAngle shear, notcherCircle cutterCircle shearHand lever shearFoot shearRotary can openersDrum deheaderAngle grinderHand and power saws (hack, jig, circular, chop, )
Snips
Nibblers
Hand notchers
Lever notchersHand lever notcher: 6”-152mmFoot lever notcher: 3 1/8”-80mm
Slotted angle shear
Circle cutter – electric drill powered
Hand lever shears
Shear machinesFoot shearCircle shear - manual
Drum deheaders
Grinding StonesFilesAngle grinder (electric, pneumatic)Grinding wheel (hand, foot, electric)
Angle grinders
Bending Pliers bendersCleat benderSheet metal brakeAngle bender
Pliers benders
Bending machinesCleat bender(1/2” (12.5mm) 180 fold)Sheet metal brake (bender)
Angle iron cutter, notcher, bender
Rolling(making cylinders and rings) Hand rollingSlip roller – sheet metalBead roller, edger, flangerRing roller – bar/angle/rod
Manual rolling machinesSlip rollBead rollerRing roller
Joining CrimpingBending (tab and slot)RivetingScrewingBoltingSpot weldingWelding
Rivet gun
Spot welder
Metal Working Processes, Tools, and Machines (sheet and small section steel) Eng. Bob Fairchild CHAB Stove Camp The Farm Sept 2012
