Method for evaluating environmental embrittlement resistance under simulated condition of R6 mooring chain

An evaluation method and mooring chain technology, which is applied in the field of environmental embrittlement performance evaluation of R6 mooring chain simulation conditions, can solve the problems of restricting the use of the hull and mooring chains, and achieve the effect of simple operation
CN109724872AInactive Publication Date: 2019-05-07JIANGSU ASIAN STAR ANCHOR CHAIN +1
8 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU ASIAN STAR ANCHOR CHAIN
Publication Date
2019-05-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for evaluating environmental embrittlement resistance under a simulated condition of an R6 mooring chain. The method comprises the following steps of: step 1, determining a sampling site, wherein the two sets of samples are taken from the ring straight body of the R6 mooring chain; step 2, preparing a reference electrode and an anode electrode; step 3, mounting a set of samples on an electro-hydraulic servo universal material testing machine, placing the reference electrode and the anode electrode, and putting into the pre-configured artificial seawater to immerse a tensile sample and the electrodes; step 4, charging a CT sample with hydrogen, wherein charging time is 48 hours; step 5, setting a strain rate and starting the test; and step 6: evaluating crack resistance by a section shrinkage rate by a slow strain rate tensile test, and evaluating environmental sensitivity of a product by a KIEAC form by a compact tensile test. The method for evaluatingthe environmental embrittlement resistance under the simulated condition of the R6 mooring chain has simple operation and is suitable for the R6 mooring chain with tensile strength above 1100 MPa, andcan analyze the hydrogen evolution potential, thereby limiting the potential protected by a hull cathode.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of mooring chains, in particular to a method for evaluating the anti-environmental embrittlement performance of R6 mooring chains under simulated working conditions. Background technique

[0002] The mooring chain is a kind of equipment that fixes the marine floating structure in its operating position. It is a key component of offshore mooring positioning and an indispensable safety guarantee equipment for the mooring of mining and processing devices. According to the mechanical properties, it can be divided into R3, R3S, R4, R4S, R5, R5S, R6 and other grades. In recent years, the sensitivity to environmental hydrogen-induced corrosion has attracted more and more attention from the deep-sea offshore oil and gas industry, so customers have higher and higher requirements for the performance and reliability of mooring chains. The tensile strength of R6 mooring chains is above 1100MPa. The service environment involves d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More