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Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Impact Tests
Impact tests are of considerable importance as an indication ...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...



Uses Of The Various Tempers Of Carbon Tool Steel






Category: HARDENING CARBON STEEL FOR TOOLS

DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pressing
and drop forgings. Mining drills to harden only. Easily weldable.

SMITHS' TOOL TEMPER.--No. 3-1/2: Large punches, minting and rivet
dies, nailmakers' tools, hammers, hot and cold sets, snaps and
boilermakers' tools, various smiths' tools, large shear blades,
double-handed chisels, caulking tools, heading dies, masons' tools
and tools for general welding purposes.

SHEAR BLADE TEMPER.--No. 4: Punches, large taps, screwing dies,
shear blades, table cutlery, circular and long saws, heading dies.
Weldable.

GENERAL PURPOSE TEMPER.--No. 4-1/2: Taps, small punches, screwing
dies, sawwebs, needles, etc., and for all general purposes. Weldable.

AXE TEMPER.--No. 5: Axes, chisels, small taps, miners' drills and
jumpers to harden and temper, plane irons. Weldable with care.

CUTLERY TEMPER.--No. 5-1/2: Large milling cutters, reamers, pocket
cutlery, wood tools, short saws, granite drills, paper and tobacco
knives. Weldable with very great care.

TOOL TEMPER.--No. 6: Turning, planing, slotting, and shaping tools,
twist drills, mill picks, scythes, circular cutters, engravers'
tools, surgical cutlery, circular saws for cutting metals, bevel
and other sections for turret lathes. Not weldable.

HARD TOOL TEMPER.--No. 6-1/2: Small twist drills, razors, small
and intricate engravers' tools, surgical instruments, knives. Not
weldable.

RAZOR TEMPER.--No. 7: Razors, barrel boring bits, special lathe
tools for turning chilled rolls. Not weldable.





Next: Steel For Chisels And Punches

Previous: Carbon Steels For Different Tools



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