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Steel Making

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

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

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Piston Pin
The piston pin on an aviation engine must possess maximum res...



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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