iron is through get spheroidal graphite spheroidization and inoculation, effectively improve the mechanical properties of cast iron
, especially improve the plasticity and toughness, and the strength is higher than carbon steel.
Small make up today about the ductile iron case of damage to to tell you about how to be repaired.
A, nodular cast iron pipe roundness correction: after use hydraulic or mechanical lifting, jacking internal to the external pressure, or the surface of the pipe surface apply pressure to the internal pressure.
In order to prevent damage to the cement mortar lining, should use with tube inside a hardwood block.
Rehabilitation of ductile cast iron pipe external image.
Ductile iron pipe cutting: cutting tube used in the grinding wheel cutting boot cut should be installed with grinding wheel and grinding with grinding wheel, the corundum (
Produced by the grinding wheel is very suitable for cut with cement lining tube, pipe, the pipe should be put on level ground or the wood, in cutting process is: as a symbol, pipe cutting, polishing.
Three, ductile iron pipe coating repair: with brush and wire surface cleaning, dry gas combustion method, when necessary use wire brush to clean up after clean, coated with paint.
Four, ductile iron pipe lining repair: 1, the transfer needs repair part of the bottom, the loss of a cup of picking.
2, with a metal brush to remove residual concrete, moist unattended marginal parts of the cement layer, and then wait for a few division.
3, filling cement mortar, and pressed it to the original cement coating thickness.
4, end is the surface smooth and add some water or a wet cloth cover, crack in case of cement dry too fast attack.
More than is the case of damage repair method of nodular cast iron, the hope can help to you.
Today small make up to you at this point, let's see you next time.
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