DIY Bronze Furnace, DIY Casting Furnaces, and other Metal Casting Furnaces
Posted on May 3, 2008
Filed Under Uncategorized |
Learn about DIY Metal Casting Furnaces including the DIY
Bronze Furnace and other DIY Casting Furnaces.
DIY casting furnaces are nothing but Do It Yourself casting
furnaces. One can make variety of furnaces. The procedure of some of them can
be described as follows:
DIY Induction
Furnace: Theoretically, only three things are required for implementing
induction heating: High frequency Electrical Power Source, work coil for
generating an alternating magnetic field, and a workpiece-electrically
conducive. However, the practical approach is very complicated. For instance,
the work coil and High Frequency source’ should have a matching network in
between, to obtain better power transfer. Use of water cooling systems is very
common in induction heaters of high power. This facilitates removal of waste
heat from the matching circuit of the work coil and the coil itself. This
process involves application of control electronics as well. Control
Electronics, as the name suggests, controls the heating action’s intensity,
thereby ensuring consistent results. It also provides protection against
unpleasant operating conditions.
Usually, the incorporation of work coil takes place into a
resonant tank circuit. There are innumerable advantages of this. The first
advantage is that any one of the parameters, i.e. voltage or current is made
sinusoidal. This causes fewer losses to inverter by the way of allowing it
getting benefited from either zero-current-switching or zero-voltage-switching
corresponding to the arrangement chosen. The visibility of sinusoidal waveform
at work coil gives the proof of purity of signal. There also occurs less
interference of radio frequency with the equipment in its vicinity. It’s up to
the designer to choose one amongst several resonant schemes.
DIY Bronze Furnace:
The making of DIY Bronze furnace involves taking silica bricks of 9
inches X 4 ½ inches X 2 ½ inches in the first place. After that, one is
supposed to put a steel plate having dimensions 18 inches X 24 inches at the
place where he intends building the furnace. In other words, the steel plate
should be used as a base. The construction of furnace should start thereafter.
It is advisable to keep the circumference of the furnace as 14 inches. A small
hole of diameter 3 inches should be made at a height of 5.5 inches above the
floor. Let the height of the cylindrical furnace be 11 ½ inches (including
floor). This hole is to be used for inserting the burner.
The cutting of the burner port should be done in such a way
that it acts as a perfect tangent to furnace. This should be done in order to
make the flames whirl around crucible, thereby hitting it indirectly. The
peculiarity of bronze casting is emission of toxic fumes. Therefore, it is
always advised to perform the casting task in the area which has ample
ventilation. Wearing of safety clothing is recommended. After the completion of
furnace (including the cutting of hole to get the fitting of one’s biggest
crucible enabled), it should be permitted to dry. At that time, trawling of
water, vermiculite, and kaolin clay on the exterior is recommended. The
immediate use should be strictly avoided, as it may develop cracks. After
drying , let the furnace be heated slowly to reduce ?kaolin paste’ cracking.
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Tags: alternating magnetic field, consistent results, control electronics, current switching, electrical power source, first advantage, frequency source, furnaces, induction furnace, induction heaters, induction heating, matching network, radio frequency, silica bricks, sinusoidal waveform, source work, tank circuit, waste heat, water cooling systems, well control
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