Method of cavitation erosion test
1 Scope
This document specifies the test device, specimen preparation, test conditions, test flow, data processing and test report of cavitation erosion test.
This document is applicable to the cavitation erosion test of materials using vibration, turntable and jet cavitation erosion test devices, and is used to evaluate the cavitation damage and cavitation erosion resistance of metal materials in fluid media. It may serve as a reference to other materials subjected to cavitation erosion caused by liquid impact.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 10123 Corrosion of metals and alloys - Vocabulary
GB/T 16545 Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 10123 and the following apply.
3.1
cavitation erosion
damage process caused by the combined action of erosion and cavitation
3.2
cavitation erosion rate
amount of material loss caused by continuous cavitation erosion per unit time and per unit area
3.3
cumulative cavitation erosion
total amount of material surface loss caused by cavitation erosion during the test
3.4
cumulative cavitation erosion-time curve
curve between cumulative cavitation erosion and cumulative test time
3.5
cavitation erosion rate-time curve
curve between instantaneous cavitation erosion rate and test time
4 Test device
4.1 Vibration cavitation erosion test device
4.1.1 See Figure 1 for the vibration cavitation erosion test device.
Key:
1——sound arrester;
2——frequency converter;
3——amplitude transformer;
4——thermostat;
5——test container;
6——power supply;
7——specimen.
Figure 1 Schematic diagram for vibration cavitation erosion test device
Contents
1 Scope
2 Normative references
3 Terms and definitions
4 Test device
5 Specimen preparation
6 Test conditions
7 Test flow
8 Data processing
9 Test report
Annex A (Informative) Deviation band of vibration cavitation erosion of Ni200 material
