CN103115816A - Slow strain rate test method and device for R6-stage mooring cable - Google Patents
Slow strain rate test method and device for R6-stage mooring cable Download PDFInfo
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- CN103115816A CN103115816A CN2011103654210A CN201110365421A CN103115816A CN 103115816 A CN103115816 A CN 103115816A CN 2011103654210 A CN2011103654210 A CN 2011103654210A CN 201110365421 A CN201110365421 A CN 201110365421A CN 103115816 A CN103115816 A CN 103115816A
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Abstract
The invention provides a slow strain rate test method and device for a R6-stage mooring cable. Two groups of tensile test pieces (2) are available, two tensile test pieces are available in each group, one group of tensile test pieces are in a ring back manner, the other group of tensile test pieces are in a welded junction manner, and the slow strain rate test under a control environment and an embrittling environment are respectively carried out, wherein the tensile rate is 10-5/s, an inspecting parameter is that the area reduction ratio RRA is as follows: RRA=RAe/Rac, wherein the RAe represents the area reduction ratio under the test environment, the RAc represents the area reduction ratio under the control environment, and the ratio is required to be greater than 0.9 under each group of test environment; and a medium of the test environment refers to artificial sea water (3), and a medium of the control environment refers to air. According to the method and the device, the test process is simple, a test piece is conveniently clamped, and the test result is exact.
Description
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Technical field
The present invention relates to material extending mechanical test field, relate in particular to the slow stretching test method of a kind of R6 level mooring cable and device.
Background technology
Mooring cable is a kind of equipment that offshore structure is fixed on its job position, is also the key components of marine mooring and positioning system.According to being divided into several grades such as R3, R3S, R4, R4S, R5 by mechanical property.As the indispensable safety guarantee equipment of offshore oil drilling, collection stationary installation, the client requires also more and more higher to the mooring cable Performance And Reliability.By the development of decades, mooring cable has developed into R4, R4S from R3, R3S, and even present R5, R6.As a kind of novel mooring cable, the R6 product has certain requirement for the environment sensitive performance, and the clear and definite slow stretching test method of R6 level mooring cable is not yet arranged in the industry.
Summary of the invention
The purpose of this invention is to provide a kind of process of the test simple, test specimen convenient mounting and clamping, test findings be the slow stretching test method of R6 level mooring cable and device accurately.
The object of the present invention is achieved like this, and the slow stretching test method of a kind of R6 level mooring cable is characterized in that: adopt two every group of two groups of tensile samples, one group is adopted the ring back of the body, one group is adopted weld bond, control environment respectively and the embrittlement environment under slow tension test, rate of extension gets 10
-5/ s investigates parameter and is section shrinkage than RRA:RRA=RAe/Rac, and wherein RAe is the reduction of area under experimental enviroment, and RAc is the reduction of area under controling environment, and requires under every group of experimental enviroment ratio greater than 0.9; Described experimental enviroment medium is artificial seawater, and the described medium that controls environment is air.
The slow stretching test method of a kind of R6 level mooring cable of the present invention comprises the following steps:
(A) make as requested tensile sample;
(B) a ring back of the body and weld bond tensile sample are respectively installed on drawing machine, install the pre-configured artificial seawater of rear importing, with the tensile sample submergence;
(C) regulate the drawing machine parameter, make parameter satisfy testing requirements;
(D) tensile sample is stretched slowly, break after the generation distortion;
(E) measure respectively tensile sample breaking part area and calculate reduction of area RAe;
(F) another ring back of the body and weld bond tensile sample are respectively installed on drawing machine, under controling environment, adopt identical drawing machine parameter, stretch slowly, break after the generation distortion, measure respectively the breaking part area and calculate reduction of area RAc;
(G) calculate respectively section shrinkage and compare RRA:RRA=RAe/Rac.
The slow tensile test apparatus of a kind of R6 level mooring cable of the present invention, comprise two chucks, tensile sample, artificial seawater, it is characterized in that: described tensile sample two ends are provided with chuck, the chuck of below passes the drum ladle that single face has the end, and chuck and drum ladle contact position are provided with band.
Process of the test of the present invention is simple, the test specimen convenient mounting and clamping, and test findings is accurate.
Content of the present invention is easier to be expressly understood in order to make, and the below is according to specific embodiment and by reference to the accompanying drawings, and the present invention is further detailed explanation:
Accompanying drawing is slow tensile test apparatus structural representation.
In figure 1, chuck, 2, tensile sample, 3, artificial seawater, 4, drum ladle.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
With reference to accompanying drawing, the slow stretching test method of a kind of R6 level mooring cable is characterized in that: adopt every group two of two groups of tensile samples 2, one group is adopted the ring back of the body, and one group is adopted weld bond, control environment respectively and the embrittlement environment under slow tension test, rate of extension gets 10
-5/ s investigates parameter and is section shrinkage than RRA:RRA=RAe/Rac, and wherein RAe is the reduction of area under experimental enviroment, and RAc is the reduction of area under controling environment, and requires under every group of experimental enviroment ratio greater than 0.9; Described experimental enviroment medium is artificial seawater 3, and the described medium that controls environment is air.The slow stretching test method of described a kind of R6 level mooring cable comprises the following steps: (A) make as requested tensile sample; (B) a ring back of the body and weld bond tensile sample are respectively installed on drawing machine, install the pre-configured artificial seawater of rear importing, with the tensile sample submergence; (C) regulate the drawing machine parameter, make parameter satisfy testing requirements; (D) tensile sample is stretched slowly, break after the generation distortion; (E) measure respectively tensile sample breaking part area and calculate reduction of area RAe; (F) another ring back of the body and weld bond tensile sample are respectively installed on drawing machine, under controling environment, adopt identical drawing machine parameter, stretch slowly, break after the generation distortion, measure respectively the breaking part area and calculate reduction of area RAc; (G) calculate respectively section shrinkage and compare RRA:RRA=RAe/Rac.The slow tensile test apparatus of described a kind of R6 level mooring cable, comprise two chucks 1, tensile sample 2, artificial seawater 3, it is characterized in that: described tensile sample 2 two ends are provided with chuck 1, the chuck 1 of below passes the drum ladle 4 that single face has the end, and chuck 1 is provided with band with drum ladle 4 contact positions.During concrete enforcement, first configure artificial seawater, prepare the drum ladle that single face is porose, a ring back of the body sample is installed on drawing machine, shut with band in case leak-stopping water installs the pre-configured artificial seawater of rear importing, with the sample submergence in the place that the below chuck contacts with container.Another one weld bond sample equally so carries out, and corresponding rate of straining is set on request, begins to carry out slow tension test, and general rate of extension gets 10
-5/ s, measure tensile sample breaking part area and record after off-test, the sample of two other sample (taking from respectively the ring back of the body and weld seam) is tested in air, same tensile sample breaking part area and the record measured, to take from last the area of fracture of sample under different condition of same position and compare, result is exactly corresponding environmental embrittlement sensitive property.
Claims (3)
1. slow stretching test method of R6 level mooring cable is characterized in that: adopt two every group of two groups of tensile samples (2), one group is adopted the ring back of the body, and one group is adopted weld bond, control environment respectively and the embrittlement environment under slow tension test, rate of extension gets 10
-5/ s investigates parameter and is section shrinkage than RRA:RRA=RAe/Rac, and wherein RAe is the reduction of area under experimental enviroment, and RAc is the reduction of area under controling environment, and requires under every group of experimental enviroment ratio greater than 0.9; Described experimental enviroment medium is artificial seawater (3), and the described medium that controls environment is air.
2. the slow stretching test method of a kind of R6 level mooring cable according to claim 1 comprises the following steps:
(A) make as requested tensile sample;
(B) a ring back of the body and weld bond tensile sample are respectively installed on drawing machine, install the pre-configured artificial seawater of rear importing, with the tensile sample submergence;
(C) regulate the drawing machine parameter, make parameter satisfy testing requirements;
(D) tensile sample is stretched slowly, break after the generation distortion;
(E) measure respectively tensile sample breaking part area and calculate reduction of area RAe;
(F) another ring back of the body and weld bond tensile sample are respectively installed on drawing machine, under controling environment, adopt identical drawing machine parameter, stretch slowly, break after the generation distortion, measure respectively the breaking part area and calculate reduction of area RAc;
(G) calculate respectively section shrinkage and compare RRA:RRA=RAe/Rac.
3. according to claim 1 with 2 slow tensile test apparatus of described a kind of R6 level mooring cable, comprise two chucks (1), tensile sample (2), artificial seawater (3), it is characterized in that: described tensile sample (2) two ends are provided with chuck (1), the chuck (1) of below passes single face and has the drum ladle at the end (4), and chuck (1) is provided with band with drum ladle (4) contact position.
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| CN2011103654210A CN103115816A (en) | 2011-11-17 | 2011-11-17 | Slow strain rate test method and device for R6-stage mooring cable |
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| CN2011103654210A CN103115816A (en) | 2011-11-17 | 2011-11-17 | Slow strain rate test method and device for R6-stage mooring cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969120A (en) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | Method for detecting mechanical property of anti-knock mild steel |
| CN104807624A (en) * | 2015-04-27 | 2015-07-29 | 正茂集团有限责任公司 | Ocean engineering mooring anchor chain fatigue test device |
| CN106017883A (en) * | 2016-05-30 | 2016-10-12 | 江苏亚星锚链股份有限公司 | Test method of mooring chain fatigue tester |
| CN109724872A (en) * | 2018-12-11 | 2019-05-07 | 江苏亚星锚链股份有限公司 | Environment resistant embrittlement method of evaluating performance under a kind of R6 grades of mooring cable simulation operating condition |
| CN109724871A (en) * | 2018-12-11 | 2019-05-07 | 江苏亚星锚链股份有限公司 | Slow tensile test apparatus under a kind of R6 grades of mooring cable cathodic protection |
| CN116148067A (en) * | 2023-04-19 | 2023-05-23 | 江苏格林机械有限公司 | Round-link chain tensile ability check out test set |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969120A (en) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | Method for detecting mechanical property of anti-knock mild steel |
| CN103969120B (en) * | 2014-04-21 | 2018-08-03 | 鞍钢股份有限公司 | A kind of mechanical property test method of antidetonation mild steel |
| CN104807624A (en) * | 2015-04-27 | 2015-07-29 | 正茂集团有限责任公司 | Ocean engineering mooring anchor chain fatigue test device |
| CN106017883A (en) * | 2016-05-30 | 2016-10-12 | 江苏亚星锚链股份有限公司 | Test method of mooring chain fatigue tester |
| CN109724872A (en) * | 2018-12-11 | 2019-05-07 | 江苏亚星锚链股份有限公司 | Environment resistant embrittlement method of evaluating performance under a kind of R6 grades of mooring cable simulation operating condition |
| CN109724871A (en) * | 2018-12-11 | 2019-05-07 | 江苏亚星锚链股份有限公司 | Slow tensile test apparatus under a kind of R6 grades of mooring cable cathodic protection |
| CN116148067A (en) * | 2023-04-19 | 2023-05-23 | 江苏格林机械有限公司 | Round-link chain tensile ability check out test set |
| CN116148067B (en) * | 2023-04-19 | 2023-06-20 | 江苏格林机械有限公司 | Round-link chain tensile ability check out test set |
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Application publication date: 20130522 |