Normal temperature seawater medium slow strain rate stress corrosion testing machine

1. Brief description of equipment:
The seawater slow strain rate (SSRT) stress corrosion (SCC) testing machine is used to conduct corrosion tensile tests on materials in seawater corrosive environments (CL-). It is a suitable equipment for studying the stress corrosion sensitive characteristics of marine materials.
The host structure is in the form of a frame, and the loading unit is flexibly installed at the upper or lower end according to test requirements to adapt to the test requirements of different media environments.
Corrosion tests in seawater media are mostly normal pressure, normal temperature, low temperature or slightly high temperature (not more than 80℃) tests.
Compliant standards:
GB/T15970.7-2000 "Corrosion of Metals and Alloys - Stress Corrosion Testing Part 7: Slow Strain Rate Test"
HB 7235-1995 Slow strain rate stress corrosion test method
ISO 7539-7-2005 Corrosion of metals and alloys – Stress corrosion testing Part7: Method for slow strain rate testing
2. Technical indicators:
2.1 Maximum test force: 50kN
2.2 Test force range: 1%～100%F.S.
2.3 Relative error of test force indication: ±0.5%
2.4 Maximum moving range of loading head: 80mm
2.5 Loading head moving speed: 1mm/s～1x10-7mm/s
2.6 Loading head displacement measurement accuracy: ±0.5%
2.7 Loading head displacement resolution: 0.0125µm
2.8 Deformation measurement range: 0～30mm
2.9 Deformation measurement resolution: 1µm
2.10 Deformation measurement accuracy: ±0.5%
2.11 Experimental kettle temperature range: (1) Normal temperature ~ 80℃
2.12 Working pressure of experimental kettle: normal pressure
2.13 Experimental kettle volume: about 3.5L
3. Equipment characteristics
3.1 High rigidity and heavy load frame;
3.2 High-performance all-digital servo loading control system with high speed control accuracy;
3.3 Double deformation sensors can be used to eliminate the influence of lateral deflection of the tie rod;
3.4 Integrated measurement and control system, easy to expand and use;
4. Test function
4.1 It has the tensile testing function of an ordinary electronic universal testing machine.
4.2 Constant load creep/stress corrosion test.
4.3 Slow strain rate tensile test, minimum moving speed of crosshead: 1x10-7mm/s.