Metal Working Processes, Tools, and Machines (sheet and small section steel) Eng. Bob Fairchild CHAB Stove Camp The Farm Sept 2012.

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Presentation transcript:

Metal Working Processes, Tools, and Machines (sheet and small section steel) Eng. Bob Fairchild CHAB Stove Camp The Farm Sept 2012

Raw Materials Plain steel sheet Galvanized steel sheet – flat, corrugated, d-rib Stainless steel sheet Plain steel rod, rebar, bar, angle Slotted angle Expanded metal Hardware cloth Steel pipe, conduit

Why Steel? Cheap Durable Takes high temperatures Not too difficult to work Stainless - takes heat better but is harder and much more expensive and less heat conductive

Processed materials Stovepipe Steel buckets Steel drums/barrels Stainless steel Cornys Pots and bowls Cast iron grates

Measuring and Marking Scale/ruler Tape measure (length and diameter) Square Protractor Scribe (w or w/o blacking and bluing) Pens, pencils Dividers/compass Snap punch Center punch Sheet metal gauge

Measuring tools

Marking tools

Making Holes Church key can opener Twist drills (lousy in sheet metal) Step drills (great in sheet metal) –small Hole saws (bimetal and carbide teeth) - large Hollow punches Hand punches Knockout punches Foot lever punches

Twist drillsStep drills

Hole saws BimetalCarbide

Hollow punches Hand punches

Knockout punches Foot lever punch

Cutting Hammer and chisel Hand and power snips Hand and power nibblers hand notchers Hand and foot lever notchers Slotted angle shear Angle shear, notcher Circle cutter Circle shear Hand lever shear Foot shear Rotary can openers Drum deheader Angle grinder Hand and power saws (hack, jig, circular, chop, …)

Snips

Nibblers

Hand notchers

Lever notchers Hand lever notcher: 6-152mmFoot lever notcher: 3 1/8-80mm

Slotted angle shear

Circle cutter – electric drill powered

Hand lever shears

Shear machines Foot shear Circle shear - manual

Drum deheaders

Grinding Stones Files Angle grinder (electric, pneumatic) Grinding wheel (hand, foot, electric)

Angle grinders

Bending Pliers benders Cleat bender Sheet metal brake Angle bender

Pliers benders

Bending machines Cleat bender (1/2 (12.5mm) 180° fold) Sheet metal brake (bender)

Angle iron cutter, notcher, bender

Rolling (making cylinders and rings) Hand rolling Slip roller – sheet metal Bead roller, edger, flanger Ring roller – bar/angle/rod

Manual rolling machines Slip roll Bead roller Ring roller

Joining Crimping Bending (tab and slot) Riveting Screwing Bolting Spot welding Welding

Rivet gun

Spot welder

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