Slow Tension Stress corrosion Testing Machine(CE CUL/CSA)
Slow Strain Rate Stress Corrosion Testing Machine(CE CUL/CSA)
1. Introduction
→Used in tensile stress test, constant load creep test,corrosion fatigue test,corrosion crack growth test,crack expansion test under tensile stress (working stress,hot stress,residual stress,etc.) for components,structural members,metals and nonmetals,alloy material,composites, etc.
→Applicable in metals,tubes,construction components (casing,oil pipes,flat-end casing,liner tubes,welded steel tubes,seamless steel tubes,underground pipes,brass,aluminum alloy,stainless steel,steel cable,high pressure gas cylinder,steel cylinder).
→It can realize simulation environment (oil and gas transmission,boring,well measurement,marine environment,aerospace,underground,mine,etc.)
→It can be conducted corrosion fatigue test,(SSRT)slow strain rate test,(SSC)sulfide stress corrosion test,(SCC) stress corrosion test,(HIC)hydrogen cracking test,(SSRT) slow strain rate rate stress corrosion test,(SOHIC) stress-oriented hydrogen cracking test, (GHSC)galvanic couple induced hydrogen stress cracking, etc.
→Stress corrosion medium: H2S,NaCl,Acetic acid / acetic anhydrid, sodium acetate/sodium acetate/ anhydrous sodium/sodium acetate, N2,Ar,NH3,CO2,NaOH,NO3,sulfate,barium sulfate,methyl alcohol, N2O4,CuSO4,Fe2SO3,H20,etc.
High-temperature resistance / full-sealing/corrosion resistance / leakage proof / stress corrosion environment container:
→Stress corrosion environment container,made of imported materials,with features of high temperature resistance,corrosion resistance,long time test,temperature up to 100°.
→With indication unit for real-time check and temperature control of corrosion medium.
→Adopting full-sealing stress corrosion environment container to prevent
volatilization and leakage of toxic gas.
Test Standards
→GB/T25834 Corrosion of metals and alloys- Accelerate corrosion testing of iron and steel in outdoor atmospheres
→GB/T15260-2016 Corrosion of metals and alloys-Test methods for intergranular corrosion of nickel alloys
→GB/T4334.6-2015 Test method for stainless steels in 5% sulfuric acid; →GB/T16545-2015 Corrosion of metals and alloys-Removal of corrosion products from corrosion test specimens
→GB/T25996-2010 Test method for thermal insulations on external stress corrosion cracking of austenitic stainless steel
→GB/T20972.3 Petroleum and natural gas industries-Material for use in H2S-containing environments in oil and gas production-part3:Cracking-resistant CRAs(corrosion-resistant alloys)and other alloys
→GB/T4157 Laboratory testing of metals for resistance to specific forms of environmental cracking in H2S environments
→GB/T10127 Stainless steels-Method of ferric chloride crevice corrosion test
→GB/T17898-(YB/T5362) Test method for stress corrosion-cracking resistance of stainless steels in a boiling magnesium chloride solution
→YB/T5344 Fe-Cr-Ni alloys-stress corrosion test in high temperature water →HB7235 Slow strain rate stress corrosion test method
→ISO 7539-1:2012 Corrosion of metal and alloys - the stress corrosion test
→ISO 15156.2 Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 2: Cracking-resistant carbon and low-alloy steels, and the use of cast irons
→NACE TM0177 Laboratory testing of metals for resistance to sulfide stress cracking and stress corrosion cracking in H2S environments
→NACE MR0175/ISO15156 Petroleum and natural gas industries - materials for use in H2S-containing environments in oil and gas production
→NACE TM0177-2005 Laboratory testing of metals for resistance to sulfide stress cracking and stress corrosion cracking in H2S environments
→ASTM G31-72(2004) Standard practice for laboratory immersion corrosion testing of metals
→ASTM G39 Standard proactice for preparation and use of bent-beam stress-corrosion test specimens
2. Technical Specifications
SSRT10/20/30/50/100 |
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No. |
Inspection items |
Technical specifications |
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1 |
Max. load |
10kN/20kN |
30kN/50kN |
100kN |
2 |
Load grade |
Class 0.5/Class 1 |
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3 |
measuring range of load |
0.4%-100%FS / 1%-100%FS |
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4 |
Relative error of indicating value |
±0.5% / ±1.0% |
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5 |
Load resolution |
1/±300000F.S |
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6 |
Measuring range of deformation |
0.2%~100%F.S |
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7 |
Speed range of load |
0.005%-5%FS/S |
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8 |
Speed accuracy of load |
If speed <0.05%FS, accuracy:±1% of the set value If speed ≥0.05%FS, accuracy: within ±0.5% of the set value |
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9 |
Speed range of deformation |
0.005~5%FS/s |
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10 |
Speed accracy of deformation |
If speed<0.05%FS/s, accuracy: ±1% of the set value If speed ≥0.05%FS/s, accuracy: within ±0.5%of the set value |
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11 |
Displacement speed |
10-7~1mm/min |
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12 |
Speed accuracy of displacement |
Within ±0.2%of the set value |
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13 |
Span between columns |
410mm |
510mm |
|
14 |
Stroke of crosshead |
1000mm |
1200mm |
|
15 |
Stress corrosion environmental container |
High-temperature resistance/ full-sealing / corrosion resistance / leakage proof / temperature indication / long-time test/up to 100° |
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16 |
Working voltage |
220V±10% 50Hz |
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20 |
Motor power |
400W |
750w |
2000w |
21 |
Dimension of loading frame (L*W*H) |
860*460*1750mm |
940*520*1850mm |
1050*560*2150mm |