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A variety of Selective Laser Melting machines with laser outputs from 100 to 2800 Watt are sold, the latter distributed on four lasers. According to manufacturer specifications, the top model is the currently (April 2014) highest-performing metal 3D printer on the market and cost approximately 1.5 million euros. [1]
While the outward designs of apparatuses can vary greatly, most apparatuses use a sample loaded into a sealed capillary tube (melting-point tube), which is then placed in the apparatus. The sample is then heated, either by a heating block or an oil bath, and as the temperature increases, the sample is observed to determine when the phase change ...
Selective laser melting (SLM) machines can operate with a work space up to 1 m (39.37 in) in X, Y and Z. [10] [11] Some of the materials being used in this process can include Ni based super alloys, copper, aluminum, stainless steel, tool steel, cobalt chrome, titanium and tungsten.
For example, here is an article about the specific conditions that were found to work well for melt spinning Fe-B and Fe-Si-B alloys. In general, melt spinners will run with some variation in the following variables depending on the desired product.
The maximum melting area of day tanks is 10 m2, and the melting capacity is between 0.4 and 0.8 t/m2 of melting area. The pot furnace is one type of this. The furnace consists of a refractory masonry basin with a depth of 40 to 60 cm (bottom furnace), which is covered with a vault with a diameter of 70 to 80 cm (top furnace).
An example of this is a mold-filling machine. Plastic pellets are inserted at one end and heat is applied, melting the pellets and discharging them into a mold. Another example is known as a cooker-extruder and is used in the production of snack foods such as pretzels and more.
During melting, wax typically expands in volume by 5–20% (Freund et al. 1982). A wide range of waxes can be used in wax motors, ranging from highly refined hydrocarbons to waxes extracted from vegetable matter. Specific examples include paraffin waxes in the straight-chain n-alkanes series. These melt and solidify over a well-defined and ...
The snow machine melts approximately 136 tonnes (134 long tons; 150 short tons) of snow [7] per hour using air/fuel combustion to heat water and mix it with snow in a melting tank. The melted snow continuously drains from the tank, as it overflows, out of the melter and into storm drains or sewers along the road.