sand casting parts are produced under the strict supervision of experienced engineers with competitive price
Material:Carbon steel,low alloy steel:ZG20SiMn,ZG50Mn,ZG35SiMn,ZG35CrMo,ZG35SiMnMo,
ZG42CrMo,ZG40Cr,ZG34CrNiMo,ZG40Mn and so on.
Process:Place a pattern in sand to create a mold; Incorporate a gating system; Remove the pattern;Fill the mold cavity with molten metal;Allow the metal to cool;Break away the sand mold and remove the casting.
Standard&certificate:ASTM,BS,NF,DIN,JIS and so on; ISO 9001:2000
Weight:from 3 tons to 120 tons per piece
Application:
The products can be widely used in the area of cement mill,rotary kiln,shipbuilding,
metallurgy,mine,sugar mill,powder plant,rail road,engine bed and so on.
Possible defects:
Defect | Causes |
Unfilled sections | Insufficient material Low pouring temperature |
Porosity | Melt temperature is too high Non-uniform cooling rate Sand has low permeability |
Hot tearing | Non-uniform cooling rate |
Surface projections | Erosion of sand mold interior A crack in the sand mold Mold halves shift |
There are no these problems for us
Uniform wall thickness will ensure uniform cooling and reduce defects. A thick section, often referred to as a hot spot, causes uneven cooling and can result in shrinkage, porosity, or cracking.
Corners
Round corners to reduce stress concentrations and fracture
Inner radius should be at least the thickness of the walls
Machining allowance
Add 0.0625 - 0.25 in. (0.16 - 0.64 mm) to part dimensions to allow for machining to obtain a smooth surface.
