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.
Today nodular cast iron nodular cast iron pipe manufacturer to give you about the technical maintenance.
1 a, ductile iron pipe technology maintenance, the first thing you want is the quality of the pipes.
Drainage close all valves from the beginning of the straight tube, and to draw off the cracks as soon as possible.
2, dug crack pipe using repair card, but cannot prevent the occurrence of cracks, the revolutionaries to prevent crack expanding.
3, determine the accurate position of cracks, until the cutting work, must cut all damaged parts, cutting length - in 100
Between 300 mm and mark cutting marker pen.
4, the principle of installing a new water supply ductile iron pipe length shorter than the original pipe 10 -
Must ensure that cutting the pipe ends is flat and level.
5, in tube after repair of the soil.
After cutting the new and old tube coated with the same material of galvanized asphalt.
6 GuanCheng mouth to ensure balance, installing nodular cast iron.
* * after pressure tight seal processing.
Second, the nodularizer effect on the properties of nodular cast iron tube 1, the composition of nodularizer is not pure.
2, nodulizing agent without alloy powder particle size.
3, the density of nodularizer volatile, some nodularizer floating fast, intense reaction, do not guarantee security.
4, magnesium oxide content is exorbitant, spheroidizing treatment is poor, too much for the amount of spheroidizing agent.
5, after the ball drops rapidly.
Above is about the technology of ductile cast iron pipe repair, hope can help to you, today small make up to you at this point, want to know more information, please focus on ductile iron manufacturers, small make up regularly update information for everyone.
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