200KW Two Bath Type Induction Copper Melting Furnace For Gravity
Casting , Furnace for Melting Copper
1. General description
The 200KW gravity copper casting furnace adopts the two melting
pool design and the two induction body structure.
The advantages of this structure are to balance the temperature of
the melting pool and all parts of the furnace to
achieve the energy-saving effect, and to improve the range of
electromagnetic stirring so that all elements in the
furnace are more evenly distributed. The purpose of gravity copper
casting furnace: melting and holding of red
copper, bronze, brass and other copper alloys.
2. Technical Parameter of Copper Melting Furnace
| No. | Item | Parameter |
| 1 | Minimum capacity | 0.3T |
| 2 | Rated total capacity | 1.5 T |
| 3 | Rated power | 200KW |
| 4 | Melting pool power | 120KW |
| 5 | Holding pool power | 80KW |
| 6 | Rated voltage | 380V |
| 7 | Phase | 3P |
| 8 | Frequency | 50Hz |
| 9 | Melting rate | 0.5T/hour |
| 10 | Rated working temperature | 1250℃ |
| 11 | Power factor | 0.45~0.5 (before compensation) 0.9~1 (after compensation) |
| 12 | Cooling water pressure | (2~3) ×105 PA |
| 13 | Cooling water consumption | 7T/hour (induction coil 3T/hour, water cooling jacket 4T/hour) |
3. Working principle and main structure
The copper casting furnace is designed based on the principle of
electromagnetic induction. The alternating magnetic
flow is generated after the induction coil is applied with
alternating voltage. The magnetic flow passes through the iron
core to form a closed magnetic circuit. This alternating magnetic
flow induces electromotive force and secondary
current in the molten chamber. This current converts electrical
energy into heat energy through the resistance of
the metal charge, and the heat energy melts the metal in the
chamber.
3.2 The copper melting holding furnace is composed of furnace body,
furnace frame, induction body, electric furnace
cooling system, electrical control cabinet, etc.
Electric furnace voltage range: 90V, 120V, 150V, 180V, 210V, 250V,
300V, 380V.
3.3 The gravity casting electric furnace adopts two vertical iron
core induction structures. The shell is made of steel
plate. The molting pool is lined with thermal insulation materials
and refractory materials and then built with
refractory bricks.
3.4 The sensor body is composed of two sensors, two iron cores and
two pieces of molten groove. The sensing
body shell is composed of refractory knotting material and
water-cooled jacket. The induction melting furnace
body is water-cooled: in order to remove the refractory material
conveniently and reduce the power loss of the
induction body shell, the induction body shell is composed of two
halves, with insulating material sandwiched
in the middle, and the induction body shell is based on the above
flange surface during assembly.
3.5 During the melting process, the inlet water temperature shall
not be higher than 35 ℃, and the outlet water
temperature shall be higher than 55 ℃, and the water flow shall be
regularly measured. If the water flow is
lower than the required water flow, the scale shall be cleaned.
3.6 The cooling water quality of the industrial induction furnace
shall meet the following requirements: the PH value
is within the range of 7~8, the hardness is not more than 7, and
the total content of suspended solids and dissolved
solids is not more than 10, so as to prevent the cooling water from
scaling and blocking the water path.
