VIEW THE MOBILE VERSION of www.steelmaking.ca Informational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

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

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

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

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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...

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

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...



Temperature Recording And Regulation






Category: HEAT TREATMENT OF STEEL

Each furnace is equipped
with pyrometers, but the reading and recording of all temperatures
are in the hands of one man, who occupies a room with an opening
into the end of the hardening department. The opening is about 15
ft. above the floor level. On each side of it, easily legible from
all of the furnaces, is a board with the numbers of the various
furnaces, as shown in Figs. 59 and 60. Opposite each furnace number
is a series of hooks whereon are hung metal numbers representing the
pyrometer readings of the temperature in that particular furnace.
Within the room, as shown in Fig. 60, the indicating instrument
is to the right, and to the left is a switchboard to connect it
with the thermo-couples in the various furnaces. The boards shown
to the right and the left swing into the room, which enables the
attendant easily to change the numbers to conform to the pyrometer
readings. Readings of the temperatures of the carburizing furnaces
are taken and tabulated every ten minutes. These, numbered 1 to
10, are shown on the board to the right in Fig. 59. The card shown
in Fig. 61 gives such a record. These records are filed away for
possible future reference.



The temperatures of the reheating furnaces, numbered from 1 to
26 and shown on the board to the left in Fig. 59, are taken every
5 min.

Each furnace has a large metal sign on which is marked the temperature
at which the furnace regulator is required to keep his heat. As
soon as any variation from this is posted on the board outside
the pyrometer room, the attendant sees it and adjusts the burners
to compensate.




DIES FOR GLEASON TEMPERING MACHINES.--In Fig. 62 is shown a set
of dies for the Gleason tempering machine. These accurately made
dies fit and hold the gear true during quenching, thus preventing
distortion.





Next: Hardening Operation

Previous: Testing And Inspection Of Heat Treatment



Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 2825