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Failure Mechanisms
Fatigue
Creep & stress rupture
Corrosion
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Ductile and
brittle fractures
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embrittlement
Liquid
metal embrittlement
Welding
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Uniform corrosion
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Pitting
corrosion
Crevice corrosion
Marine corrosion
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Heat Exchangers
Heat
exchangers are commonly used to transfer heat from steam, water, or gases, to
gases, or liquids. Some of the criteria for selecting materials used for heat
exchangers are corrosion resistance, strength, heat conduction, and cost.
Corrosion resistance is frequently a difficult criterion to meet. Damage to
heat exchangers is frequently difficult to avoid.
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The tubes in a heat exchanger transfer heat from the fluid on
the inside of the tube to fluid on the shell side (or vice versa). Some
heat exchanger designs use fins to provide greater thermal conductivity. To
meet corrosion requirements, tubing must be resistant to general corrosion,
pitting, stress-corrosion cracking (SCC), selective leaching or dealloying,
and oxygen cell attack in service. |
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Failures of Heat Exchangers
Some
common causes of failures in heat exchangers are listed below:
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Pipe and tubing imperfections
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Welding
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Fabrication
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Improper design
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Improper materials
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Improper operating conditions
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Pitting
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Stress-corrosion cracking
(SCC)
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Corrosion fatigue
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General corrosion
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Crevice corrosion
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Design errors
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Selective leaching, or dealloying
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Erosion corrosion
 
Failure
analysis can identify the root cause or causes that have contributed to your
heat exchanger failure.
Contact Information
- Telephone
- 407-880-4945 ----------- Consulting assistance is only available for customers
- FAX
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- Postal address
(greater Orlando area)
- AMC
- 380 S. State Road 434
- Suite 1004 - #166
- Altamonte Springs, FL 32714
- Electronic mail
- General Information: Consulting@MaterialsEngineer.com
Customer Support: Support@MaterialsEngineer.com
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