The sand casting process involves the use of a furnace metal pattern and sand mold The metal is melted in the furnace and then ladled and poured into the cavity of the sand mold which is formed by the pattern The sand mold separates along a parting line and the solidified casting can be removed
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Get PriceSand casting is one of the few available processes for metals with high melting temperatures such as steels nickel and titanium Because of its flexibility heat resistance and relatively low cost sand casting is the most widely used casting process Castings are produced by pouring liquid metal into a mold cavity
Get PriceThe upper and lower sand mold can be formed by SLS in a whole However considering the cleaning of floating sand in the lower sand mold the lower sand mold is divided into two parts Fig 7 10 and formed by the SLS process respectively The formed sand mold is shown in Fig 7 11 The aluminum alloy casting cast by it is shown in Fig 7 12
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Get PriceThe preparation of molten metal for casting is referred to simply as melting The molten metal is transferred to the pouring area where the moulds are filled Cleaning Cleaning involves removal of sand scale and excess metal from the casting Burned on sand and scale are removed to improved the surface appearance of the casting
Get PriceHard clay gravel and coarse sand 56 386 Loose medium sand and medium clay 28 193 Loose fine sand 14 96 4 Soft clay 0 14 0 96 4 Modern multi cylinder medium speed generators sets do not require massive concrete foundations to maintain engine/generator alignment In most applications a single bearing generator set can
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Get PriceLaying procedure A trench of about 1 5 meters deep and 45 cm wide is dug Then the trench is covered with a 10 cm thick layer of fine sand The cable is laid over the sand bed The sand bed protects the cable from the moisture from the ground Then the laid cable is again covered with a layer of sand of about 10 cm thick
Get PriceAt times it may be referred to as the pressure die casting In this metal die casting process the molten metal is injected in a metal die under high pressure Normally the process takes place under high speed and pressure In most cases the die casting temperature is always around 700°C during the casting process
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Get PriceBlowhole 3 1 3 Remedial Measures Avoid over ramming of sand Use dry chills only Optimum pouring temperature at1585 degreecentigrade for mild steel Avoid using fine sand grains Provision of
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Get PriceRPM = Feed Speed SFM / 0 26 x Tap s Outer Dimension Tapping speeds should be DECREASED if • Lubricant is Poor or Flow is Restricted • Bottom lead or Spiral flute taps are used • Thread depth % increase • Thread pitch is course • Cutting taper threads 50% Normal Speed Tapping speeds can be INCREASED if
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