These steels are recommended for boring,
turning and planing where the cost of high-speed seems excessive.
They are also recommended for hard wood knives, for roughing and
finishing bronze and brass, and for hot bo...
Typical Oil-fired Furnaces
Several types of standard oil-fired
furnaces are shown herewith. Figure 92 is a lead pot furnace, Fig.
93 is a vertical furnace with a center column. This column reduces
the cubical contents to be heated and also s...
Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from furnaces
where high temperatures are maintained suffer in health as well as
in bodily discomfort. This shows several types of shields designed
for the m...
Heavy Forging Practice
In heavy forging practice where the metal
is being worked at a welding heat, the amount of flame that will
issue from an open-front furnace is so great that a plain, sheet-steel
front will neither afford sufficient...
Flange Shields For Furnaces
Such portable flame shields as the
one illustrated in Fig. 106 may prove serviceable before furnaces
required for plate work, where the doors are often only opened
for a moment at a time. This shield can be placed ...
Heating Of Manganese Steel
Another form of heat-treating furnace
is that which is used for the heating of manganese and other alloy
steels, which after having been brought to the proper heat are drawn
from the furnace into an immediate quenc...