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49 Cards in this Set
- Front
- Back
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3 types of saws for cutting metal stock |
Reciprocating hack saw, band saw, circular saw |
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Cutting motion for hack saw |
Back and forth cutting on forward stroke |
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Blade doesn't cut on forward stoke on reciprocating hacksaw by |
Cam lifting blade on forward stoke |
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Movement of saw blade in to workpiece |
Feed |
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Apply heavier feed pressure on what type of material |
Soft metals and large work |
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Apply light feed pressure on |
Hard materials and work with small cross section |
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3 tooth rule |
At least 3 teeth must be in contact with workpiece at all times, maximum of 24 teeth |
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Large sections and coarse material require |
Coarse tooth blade |
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Small or thin work and hard material require |
Fine tooth blade |
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4 tooth blade (4 teeth per inch) used for |
Large sections and readily machined material |
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6 tooth blade used for |
Harder alloys and misc. cutting |
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10-14 tooth blade used for what duty saw |
Light duty saws |
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Hacksaw blades made from |
Tungsten or molybdenum steel with carbide teeth |
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2 types of hacksaw blades |
Flexible back blades and all hard blades |
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Features of flexible back blade |
Only teeth hardened, shatter proof Blade, can cut odd shapes |
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Features of all hard blade |
Used for majority of jobs, straight cuts only, more accurate |
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How to tell if hacksaw blade mounted tight enough |
Low pitch ring when tapped, slight elongation on pinholes |
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2 types of band saws |
Horizontal and verticle |
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Horizontal band saws also called |
Cutoff saws |
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3 advantages of band saws |
Faster, greater precision, less waste |
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Describes how teeth on bandsaw blade angled the straight line of the blade |
Tooth set |
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Tooth set does what |
Creates clearance for the blade to prevent overheating |
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3 tooth set patterns on band saw blades |
Raker, wavy, alternative |
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Raker set |
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Wavy set |
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Blade Set for general use |
Raker set |
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Blade set not usually for cutting metals |
Alternative set |
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Determines the efficiency of the blade |
Tooth form |
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3 types of tooth forms |
Standard, skip tooth, hook tooth |
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Blade form best for ferrous metals |
Standard |
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Blade form best for non ferrous metals |
Hook tooth |
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Blade form best for aluminum, magnesium, copper |
Skip tooth |
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Standard tooth |
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Hook tooth |
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Skip tooth |
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4 Common materials for bandsaw blades |
Carbon steel, bimetal, carbide tooth, grit blades |
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Have carbide granules or diamond bonded to toothless blade. |
Grit blades |
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Alloy steel blade with high speed steel teeth |
Bimetal blades |
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Steel blade with tungsten carbide teeth |
Carbide tooth blade |
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For cutting soft metals, wears out fast |
Carbon steel blade |
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For cutting all ferrous and non ferrous metals. More expensive that carbon steel blade |
Bimetal blades |
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Cuts aluminum castings and hard to cut metals like nickel or titanium alloys |
Carbide tooth blades |
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Cuts hard abrasive metals and cast iron |
Grit blades |
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After replacing worn blade midcut never _______ |
Never restart cut in kerf, rotate piece and restart cut |
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Crooked cuts are a result of |
A worn blade |
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3 types of circular saws |
Abrasive cutoff saw, cold circular saw, friction saw |
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Abrasive wheel can be wet or dry |
Abrasive Cutoff saw |
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Circular blade with teeth |
Cold circular saw |
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No teeth, melts metal with friction, if teeth are on blade is for bringing oxygen to cut. Used in steel mill on red hot billets |
Friction saw |
