Experimental study on impact/fretting wear in heat exchanger tubes

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6716975

Cha, J H; Wambsganss, M W; Jendrzejczyk, J A

The objective of this study is to provide qualitative impact/fretting wear information for heat exchanger tubes through the performance of a series of tests involving the pertinent parameters: force between the tube and its support; tube to support plate hole clearance; tube support plate thickness; preload; and tube vibration frequency. The characteristics of impact/fretting wear relative to material combinations and fluid environment were also investigated. The test apparatus consists of a cantilevered tube with a simulated tube support plate at the ''free end''. Tube vibration is induced by an electromagnetic exciter to simulate the flow-induced tube motion occurring in a real heat exchanger at the tube/tube support plate interface. Tests are conducted in air, water, and oil, all at room temperature. Removable wear rings are attached to the tube free end and simulated support fixture. Wear ring materials include carbon steel, 304 stainless steel, Inconel 600 and brass. Wear is measured by a weight loss technique and wear rates are calculated and reported as functions of the various pertinent parameters. Based on the test results, general conclusions are drawn.

• Research Organization: Korea Advanced Energy Research Institute, Taejon
• OSTI ID: 6716975
• Report Number(s): CONF-860722-
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR FLOW
CHEMICAL REACTIONS
CORROSION
DYNAMIC LOADS
ENERGY SOURCES
ENERGY TRANSFER
FLUID FLOW
FOSSIL FUELS
FRETTING CORROSION
FUELS
GAS FLOW
HEAT EXCHANGERS
HEAT TRANSFER
HYDROGEN COMPOUNDS
INTERFACES
LIQUID FLOW
LOSSES
MEASURING METHODS
MECHANICAL STRUCTURES
MECHANICAL VIBRATIONS
MOTION
OXYGEN COMPOUNDS
PETROLEUM
PLATES
SIMULATION
SUPPORTS
TUBES
WATER
WEAR
WEIGHT MEASUREMENT