π²ππππππππ ππ πππππ ππ πΏπππππππππππ πππ ππ πππππππ πππππ π°ππ π·ππππππ π΅ππππ π·ππππ£π
The proposed solution for our research is:
1. the first solution is to prevent corrosion and we can make that by coating the stainless steel, we have a lot of coating methods and these are one of the most used methods in the industry:
- High-Performance Powder Coating (HPPC)
- High Density Two Layer Polyethylene Coating
- Fusion Bonded Epoxy Powder Coating (FBE)
- Galvanizing
2. set up monitoring of tests for the state of corrosion inside the pipes, the monitoring is done by defining a spectrum of permissible values for the water and the resistance of the water when we detect a jump from that spectrum, this will be a sign that the corrosion is critical inside the pipes and it should be immersed in it.
3. Plan follow-up periodic inspections, especially for the inner walls of containers and pipes, so that it does not cause failure.
4. connect the lead to the ground with the pipes, in this way, we reset the potential difference and prevent corrosion.
5. Make an inner layer from a material like aluminum that produces a passive layer that protects the pipes from the inside
6. we decided to choose martensitic stainless steel because of:
- Quenching and tempering heat treatment can be given, which gives the steel improved mechanical properties and resistance to high temperatures.
- characterized by high hardness and abrasion resistance. (ΧΧͺΧΧ€ΧΧΧ ΧΧͺ ΧΧ§Χ©ΧΧΧͺ ΧΧΧΧΧ ΧΧ’ΧΧΧΧΧͺ ΧΧ©ΧΧΧ§Χ.)
- Moderate and higher resistance to corrosion (the austenites are more resistant but they are more expensive).
- Some of their fuses can be replaced, in addition to fuses that are easy to replace.
After that, we looked for the best martensitic stainless steel, and we found that the best one suitable for our requirements is the S44004 stainless steel
- Corrosion resistance. ( which are the main requirement that are we looking for)
- Compared to other stainless alloys, the highest strength can be achieved after heat treatment.
- High strength (highest carbon percentage).
- Good hardness properties.
The Chemical Composition of S44004 martensitic stainless steel are:
The Physical properties of S44004 martensitic stainless steel are:
The mechanical properties of S44004 martensitic stainless steel are:
Anatoly Agulyansky
You did a great job. I like your Root Cause Analysis you completed with Cause and Effect Chain and with 5+Whys. Thank you.
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