- Auction: 16 days left
Switzerland | Grenchen
Switzerland | Grenchen
Switzerland | Grenchen
1 Hardening furnace SOLO 111-30/20/45, with electronic control PM 1, outside dimensions approx. 750 x 900 x 900 mm, base frame 730 x 860 x 800 mm, oil tank for chilling SOLO 510-40/40/40, max. 200°C, machine number 916855.2, weight approx. 250 kg, dimensions 750 x 1500 x 1200 mm, basket size 440 x 370 x 380 mm.
Oven drying plant RIPPERT 2 lanes
Year of Make: 2005
Drying oven Make Rippert type drying system 2-track built in 2005 Specifications: transport blower 2- laned Max drying temperature. 100 ° C Heating capacity: 150 kW Heating medium:. Gas Max temperature of the heating: 350 ° C Höchstzul. Solvent throughput: 2,000 g / h Air speed: 0.2 m / s recirculation: 2x14.000 m³ / h Motor power: 7.50 kW 1,450 min-1 Supply air: 1000 m³ / h Minimum air flow rate at 20 ° C: Motor power: 0.75 kW 2,750 min-1
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Find Aluminium, Steel melting furnaces for sale in metal melting furnace category auctions on TradeMachines. Select, compare and buy the best deal from the available metalworking machinery sales.
Melting of metals, glass, and other materials has been a vital manufacturing process for several thousand years, producing molten liquids that can be poured and solidified into useful shapes. Since the dawn of the industrial age, the tremendous progress in the melting process equipment (melting furnaces), the range of molten materials, control on thermal behavior and the complexity of the finished products has enabled cast components to be an integral part of various products such as automobiles, power generators, oil pipelines, medical instruments, etc. The process of melting is accomplished for years with the help of a furnace. A furnace is an equipment to melt ferrous or non-ferrous metals for casting or simply heat materials for changing their shape or for altering their mechanical and metallurgical properties (heat treatment). An ideal furnace should melt as much of material as possible to a uniform temperature with the least possible fuel and labor.
A typical furnace is constructed with the help of the following principal components:
Thermal efficiency of any heating equipment is defined as the ratio of heat delivered to a material and heat supplied to the heating equipment. For most of the heating equipments, a large amount of the heat supplied is wasted in the form of exhaust gases. Furnaces operate with relatively low efficiencies at around 7% when compared to other combustion equipments such as boilers which are very efficient at an efficiency rate of 90%. The low efficiency of melting furnaces can be attributed to the high operating temperatures in the furnace and significant heat losses. The major factor which affects the energy efficiency of a furnace is the heat losses due to the following reasons:
• Heat storage in the furnace structure
• Losses from the furnace outside walls or structure
• Heat transported out of the furnace by the load conveyors, fixtures, trays, etc.
• Radiation losses from openings, hot exposed parts, etc.
• Heat carried by the cold air infiltration into the furnace
• Heat carried by the excess air used in the burners.
A furnace is carefully selected by giving due consideration to the following factors: type and composition of the metal to be melted, maximum temperature required (melting point of the metal), delivery rate of the molten metal (pouring rate), mode of discharging the molten metal, initial set-up and operational cost.
Furnaces can be classified based upon several aspects into various types. Furnaces are broadly classified into two types based on the heat generation method as combustion melting furnaces which use fuels to melt and electric melting furnaces in which electricity is utilized to melt the metal. Combustion melting furnaces can be further sub-divided into three types based on the kind of fuel used: oil fired, gas fired and coal fired. Furnaces in general are also classified based on the mode of charging as Intermittent or Batch, Periodical (Forging, Pot melting furnaces) and Continuous (Pusher, Walking beam, Walking hearth and rotary hearth melting furnaces). One more way of categorizing the melting furnaces is based on the mode of waste heat recovery (Recuperative and Regenerative). Based on the mode of heat transfer to the stock, the melting furnaces are classified into two types as Radiation (from the flame, hot combustion products, furnace walls and roof) and Convection (movement of hot gases over the surface of the metal).
Some of the commonly used melting furnaces are discussed below:
SECO/WARWICK, GADDA, Can-Eng Furnaces International Limited, Fives Stein, UTTIS, Inductotherm, CARBOLITE, Ambrell, Topcast and Nabertherm are some of the companies worldwide involved in the production of various kinds of melting furnaces.