CN107576709A - Metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device - Google Patents
Metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device Download PDFInfo
- Publication number
- CN107576709A CN107576709A CN201710682386.2A CN201710682386A CN107576709A CN 107576709 A CN107576709 A CN 107576709A CN 201710682386 A CN201710682386 A CN 201710682386A CN 107576709 A CN107576709 A CN 107576709A
- Authority
- CN
- China
- Prior art keywords
- electrode
- metal
- electrolyte solution
- measured
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention discloses the metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device, first according to welded seam area surface configuration and the suitable electrode probe beam of material selection and adjustment probe beam curved surface.Suitable reference electrode and salt bridge are chosen according to electrolyte solution, beam will be popped one's head in using appropriate device and reference electrode is fixed.Then using device collection current potential and current signal with zero resistance circuit, the probe of all electrode probe beams is sampled successively.Finally the current signal of collection is analyzed and processed, output current distribution map, determine the anode and cathode region of specimen surface and judge that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.The method can realize that each position galvanic corrosion sensitiveness of continuous online prison detection metal welding jointses is strong and weak, it ensure that to the accuracy of metal welding jointses position galvanic corrosion sensitivity Detection under nondestructive state, and then greatly improve the reliability and accuracy of metal welding jointses life appraisal.
Description
The present patent application is parent application " the lossless inspection of online prison detection metal welding jointses position galvanic corrosion sensitiveness
The divisional application of survey device and method ", parent application Application No. 2015100872461, the applying date are on 2 25th, 2015.
Technical field
The present invention relates to technical field of nondestructive testing, the current signal particular by collection welding point position surface enters
Row drawing obtains current distributing figure, and then obtains the galvanic corrosion sensitive information of specimen surface.
Background technology
Galvanic corrosion (also referred to as contact corrosion), refers to when two or more different metal contacts in conducting medium
Afterwards, corrosion galvanic cell is formed because respective electrode potential is different.The metal of corrosion potential calibration is negative electrode, and it is anti-that negative electrode occurs
Should, cause its corrosion process to be suppressed；And the more negative metal of current potential is anode, anode reaction occurs, causes its corrosion process
Accelerate, the galvanic couple pair of the big negative electrode of primary anode, corrosion aggravation can be particularly formed when annode area is smaller.Foundation in navigation mark at present
Galvanic Current size judges galvanic corrosion sensitivity.
Welding is the important process link in engineering manufacture, and many parts are all by being welded together.Due to
The tissue of inevitable Welded Joints has an impact in welding process, so even if two connection members and wlding are all of the same race
Material, welding point is as galvanic corrosion occurs in corrosive environment for uneven microstructure.
The method of research metal welding jointses position corrosion mainly has：Salt spray test, immersion test method (full leaching, leaching etc.)
With electrochemistry experiment method (potential measurement, Galvanic Current measurement, polarization measurement, electrochemical impedance measurement etc.).These often can only
Weight loss data and surface corrosion pattern are obtained, corrosion current data can not be obtained.And time-consuming.Although electrochemical method can obtain
To Electrochemistry Information, but it is confined to study single area respectively mostly, hardly results in the real-time current etc. when galvanic corrosion occurs
Corrosion information, online Non-Destructive Testing can not be realized.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of online prison detection metal welding jointses position
The cannot-harm-detection device of galvanic corrosion sensitiveness.The device can go out the corrosion in each region in metal welding jointses surface with on-line checking
Galvanic Current, so as to judge anode region and cathodic region, the galvanic corrosion degree and corrosion situation of change in each region are obtained, so as to sentence
Break and its galvanic corrosion sensitiveness.
It is an object of the invention to provide a kind of nothing of online prison detection metal welding jointses position galvanic corrosion sensitiveness
Damage detection method.The method can supervise the corrosion Galvanic Current of detection metal welding jointses portion faces online, so as to obtain gold
Belong to the sensitiveness of each position galvanic corrosion of welding point.
The purpose of the present invention is achieved by following technical proposals.
The cannot-harm-detection device of online prison detection metal welding jointses position galvanic corrosion sensitiveness, including to be measured connect
Head sample (welding point position to be measured sample), conductive membrane, electrolyte solution container, reference electrode, multi-channel electrode probe, electricity
Chemical measurement device and computer, the weld joint samples to be measured include welding point mother metal area and welding point weld metal zone,
The welding point weld metal zone occupy the centre position of the welding point to be measured, welding point weld metal zone surface with it is described
Welding point mother metal area is parallel, and the area of the multi-channel electrode probe is more than the area of the welding point weld metal zone, described
Multi-channel electrode, which is popped one's head in, is arranged on the upper surface of the weld joint samples to be measured, and the multi-channel electrode probe is by phenolic resin
Formed with metal electrode bar, the metal electrode bar is distributed in the phenolic resin in M rows N row are equidistant, and the M is more than etc.
It is less than or equal to 20 in 5, the N is more than or equal to 5 and is less than or equal to 20, and the electrolyte solution container includes two electricity of identical first
Electrolyte solution container and the second electrolyte solution container, the first electrolyte solution container and second electrolyte solution hold
Device is symmetrically arranged at the both sides of the weld joint samples to be measured, inspection of being popped one's head in the bottom of multi-channel electrode probe
Survey between the upper surface of end and the weld joint samples to be measured and be provided with the conductive membrane, the film surface of the conductive membrane respectively with
The bottom of the multi-channel electrode probe and the upper surface of the weld joint samples to be measured are in close contact, and the conductive membrane
Two side ends infiltrate in the electrolyte solution of the first electrolyte solution container and the second electrolyte solution container respectively,
One end of the reference electrode is placed on by salt bridge in the electrolyte solution of the second electrolyte solution container, described more logical
The top of road electrode probe is Signal connector end, the reference electrode, the bottom surface of the welding point weld metal zone respectively by leading
Line is connected with signal acquisition terminal, demarcation reference electrode end and the earth terminal of the electro-chemical measuring apparatus, the electrochemical measurement
Device includes zero resistance circuit, and the signal output part of the electro-chemical measuring apparatus is connected with the computer.
In the above-mentioned technical solutions, for the complicated detection surface of surface configuration, then the brushing phenolic aldehyde respectively of electrode bar every
Resin, enclosed electrode rod non-working surface, only expose head working face, each electrode bar face area is identical, by electrode bar
Beam working face forms the curved surface beam for being suitable for test piece surface configuration.
In the above-mentioned technical solutions, from saturated calomel electrode as reference electrode.
In the above-mentioned technical solutions, in the first electrolyte solution container and the second electrolyte solution container
Equipped with 3.5%NaCl solution.
In the above-mentioned technical solutions, the ion conductive membrane is can turn on ion, but can not conduct electrons, such as sea
Silk floss, timber, filter paper, bamboo, the filter paper of 3.5%NaCl solution is preferably soaked with as ion conductive membrane.
In the above-mentioned technical solutions, the metal electrode bar use Q235 models carbon steel, the metal electrode bar it is straight
Footpath is 1.0-1.5mm, preferably 1.2mm.
Wherein, equidistantly it is fixed on multi-channel electrode probe by the carbon steel rod of 100 Q235 models in phenolic resin and is
Example, metal electrode bar are arranged in 10 rows 10, and 0.2mm is arranged in phenolic resin at equal intervals, the signal acquisition of electro-chemical measuring apparatus
End includes 100 signal acquisition contacts (not marked in figure).
The top and the specific connected mode of the signal acquisition terminal of electro-chemical measuring apparatus that multi-channel electrode is popped one's head in are：It is more logical
100 metal electrode bars of road electrode probe by 100 wires respectively with the signal acquisition terminal of electro-chemical measuring apparatus 100
Individual signal acquisition contact connection.
Electro-chemical measuring apparatus is controlled by the single-chip microcomputer being embedded, suitable successively according to the position of 100 metal electrode bars
Sequence gathers the current signal of 100 signal acquisition points.
In the above-mentioned technical solutions, weld joint samples to be measured be Q235 steel welding point, whole welding point part
Surface area be 15*15mm.
After connecting whole device, weld joint samples to be measured are connect by the conductive membrane with being impregnated with 3.5%NaCl solution
Touch, its surface can corrode.During detection, make welding point weld metal zone and the electrochemical testing device of weld joint samples to be measured
Earth terminal turns on, and reference electrode turns on the demarcation reference electrode end of electro-chemical measuring apparatus；Filled by electrochemical measurement
Embedded single-chip microcomputer control is put, each metal electrode bar that multi-channel electrode is popped one's head in is being connect at different moments with to be measured respectively
Head sample is turned on and gathers corresponding current signal, and the current signal of collection is defeated by the meter being connected with electro-chemical measuring apparatus
Calculation machine；Computer analyzes and processes to the current signal of collection, output current distribution map.It can be determined according to current distributing figure
The anode and cathode region on weld joint samples surface simultaneously judges that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.
The lossless detection method of online prison detection metal welding jointses position galvanic corrosion sensitiveness, enters as steps described below
OK：
Step 1：Conductive membrane is placed in weld joint samples to be measured and is made up of phenolic resin and metal electrode bar more
Between channel electrode probe, popped one's head in the bottom of the multi-channel electrode probe test side and the weld joint samples to be measured
Upper surface between be provided with the conductive membrane, the metal electrode bar by the conductive membrane it is orderly be emitted on it is described to be measured
Weld joint samples upper surface, the metal electrode bar are distributed in the phenolic resin in M rows N row are equidistant, and the M is more than
It is less than or equal to 20 equal to 5, the N is more than or equal to 5 and is less than or equal to 20, and reference electrode surface treatment is standby；
Step 2：The reference electrode is fixed in the electrolyte solution of the first electrolyte container by salt bridge, it is described to lead
The both ends of logical film are infiltrated in the electrolyte solution of first electrolyte container and the second electrolyte container simultaneously；
Step 3：Current signal is gathered using the electro-chemical measuring apparatus with zero resistance circuit, wherein the multichannel is electric
Pole probe is connected with the electro-chemical measuring apparatus working end, and the weld joint samples lower surface to be measured is surveyed with the electrochemistry
Trial assembly is put earth terminal and is connected, the reference electrode (adding salt bridge) and the reference electrode end phase set in the electrochemical testing device
Even；
Step 4：Multi-channel electrode probe each metal electrode bar respectively at different moments with weld joint samples to be measured
Conducting composition galvanic couple pair, and current signal corresponding to collection, until the sampling of all metal electrode bars terminates；
Step 5：The current signal of collection is analyzed and processed, output current distribution map is each in current distributing figure
Root electrode all correspond to a two-dimensional coordinate, i.e. current distributing figure shows the metal electrode bar array institute being equally spaced in M rows N row
The CURRENT DISTRIBUTION on corresponding weld joint samples surface to be measured, different corrosion current coordinates are told by current distributing figure coordinate
The position on corresponding weld joint samples surface to be measured, corrosion current value is bigger, shows that the galvanic corrosion sensitiveness of the position is got over
By force；Such as first electrode correspond to coordinate (1,1), second electrode respective coordinates (1,2), until the tenth electrode pair should be sat
Mark (1,10)；But abscissa is changed since the tenth electrode, coordinate (2,1) is correspond to, similarly until the 20th
Root electrode respective coordinates (2,10), then abscissa change again.Change once every ten electrodes, abscissa, until the
100 electrode pairs answer (10,10), determine the anode and cathode region of specimen surface and judge that the galvanic corrosion at each position of welding point is quick
It is perceptual strong and weak.
From saturated calomel electrode as reference electrode.
It is molten that 3.5%NaCl is respectively arranged with the first electrolyte solution container and the second electrolyte solution container
Liquid.
From filter paper as conductive membrane.
The metal electrode bar use Q235 models carbon steel, a diameter of 1.0-1.5mm of the metal electrode bar, preferably
1.2mm。
The multi-channel electrode detecting head surface is parallel with the upper surface of the weld joint samples to be measured, and the multichannel
The worksheet area of electrode probe surface covering is not more than the surface area of the weld joint samples to be measured.
The present invention can be with the corrosion of online real time collecting welding point each several part in corrosive environment by electrochemical means
Electric current, current distributing figure is obtained, judge anode region and cathodic region that galvanic corrosion occurs, so as to which visual and clear research connects
The galvanic corrosion sensitiveness at each position is strong and weak, has that result is simple, easy to operate, measurement accuracy is high, and intuitive measurement results are clear
The advantages that clear.
A kind of Non-Destructive Testing side of online prison detection metal welding jointses position galvanic corrosion sensitiveness proposed by the present invention
Method, a kind of new method is provided for the online prison detection of welding point position galvanic corrosion sensitiveness.The method can be examined online
The corrosion current in each region in metal welding jointses surface is measured, so as to judge anode region and cathodic region, obtains the galvanic couple in each region
Extent of corrosion and corrosion situation of change, so as to judge its galvanic corrosion sensitiveness.With traditional Non-Destructive Testing welded-joint
The method of position galvanic corrosion sensitiveness is compared, and the method can observe metal welding jointses portion faces more visual and clearly
Galvanic corrosion situation, have that simple to operate, measurement accuracy is high, accuracy is high, production efficiency is high, facilitates that easy-to-use, real-time is high
The advantages of, it is particularly suitable for the online prison detection of live metal welding jointses position galvanic corrosion sensitiveness.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the cross-sectional view that multi-channel electrode is popped one's head in the present invention；
Fig. 3 be in the specific embodiment of the invention weld joint samples to be measured in 3.5%NaCl salt spray test chamber internal corrosion
The erosion profile figure obtained after 10min；
Fig. 4 is that the weld joint samples to be measured that specific embodiment of the invention Computer analyzing and processing current data obtains are rotten
Lose the current distributing figure after 10min.
In figure：1 is weld joint samples to be measured, and 1-1 is welding point mother metal area, and 1-2 is welding point weld metal zone, and 2 are
Computer, 3 be conductive membrane, and 4 be that multi-channel electrode is popped one's head in, and 4-1 is phenolic resin, and 4-2 is metal bar, and 5-1 is the first electrolyte
Solution container, 5-2 are electrolyte solution container, and 6 be reference electrode, and 7 be electro-chemical measuring apparatus.
Embodiment
Technical scheme is further described below by specific embodiment.
As shown in Figures 1 to 4, in figure：1 is weld joint samples to be measured, and 1-1 is welding point mother metal area, and 1-2 connects for welding
Head weld metal zone, 2 be computer, and 3 be conductive membrane, and 4 be that multi-channel electrode is popped one's head in, and 4-1 is phenolic resin, and 4-2 is metal bar, 5-1
For the first electrolyte solution container, 5-2 is electrolyte solution container, and 6 be reference electrode, and 7 be electro-chemical measuring apparatus.
Embodiment 1
A kind of the cannot-harm-detection device for detecting metal welding jointses galvanic corrosion sensitiveness, including：Welding point examination to be measured
Sample, conductive membrane, electrolyte solution container, reference electrode, multi-channel electrode probe, electro-chemical measuring apparatus and computer, it is to be measured
Weld joint samples include welding point mother metal area and welding point weld metal zone, and welding point weld metal zone occupy welding point to be measured
Centre position, welding point weld metal zone surface is parallel with welding point mother metal area, multi-channel electrode probe area be more than weldering
The area in joint welding area is connect, multi-channel electrode, which is popped one's head in, is arranged on the upper surface of weld joint samples to be measured, and multi-channel electrode is visited
Head is made up of phenolic resin and metal electrode bar, electrolyte solution container include two identical the first electrolyte solution containers and
Second electrolyte solution container, the first electrolyte solution container and the second electrolyte solution container are symmetrically arranged at weldering to be measured
The both sides of joint samples are connect, in the bottom (test side of popping one's head in) of multi-channel electrode probe and the upper table of weld joint samples to be measured
Be provided with conductive membrane between face, the film surface of conductive membrane respectively with the bottom of multi-channel electrode probe and weld joint samples to be measured
Upper surface is in close contact, and the two side ends of conductive membrane infiltrate in the first electrolyte solution container and the second electrolyte solution appearance respectively
In the electrolyte solution of device, one end of reference electrode is placed on the first electrolyte solution container by salt bridge (not marked in figure)
In electrolyte solution, the top (i.e. Signal connector end) of multi-channel electrode probe, the weldering of reference electrode, weld joint samples to be measured
Joined respectively by the signal acquisition terminal of wire and electro-chemical measuring apparatus (not marked in figure), demarcation the bottom surface for meeting joint welding area
It is connected than electrode tip (not marked in figure) with earth terminal (not marked in figure), electro-chemical measuring apparatus includes zero point resistance circuit, electricity
The signal output part of chemical measurement device is connected with computer.
In the present embodiment, from saturated calomel electrode as reference electrode.
In the present embodiment, it is respectively arranged with 3.5% in the first electrolyte solution container and the second electrolyte solution container
NaCl solution.
In the present embodiment, from filter paper as conductive membrane.
In the present embodiment, the metal electrode bar material of multi-channel electrode probe is the carbon steel of Q235 models, wherein more logical
Road electrode probe is equidistantly fixed in phenolic resin by the carbon steel rod of 25 Q235 models, is arranged into 5 rows 5, and 1.0mm is arranged at equal intervals
It is listed in phenolic resin, a diameter of 1.5mm of the carbon steel rod of Q235 models.
In the present embodiment, the signal acquisition terminal of electro-chemical measuring apparatus (is not marked including 25 signal acquisition contacts in figure
Go out).
In the present embodiment, the specific of the signal acquisition terminal of the top of multi-channel electrode probe and electro-chemical measuring apparatus connects
The mode of connecing is：25 metal electrode bars of multi-channel electrode probe pass through 25 wires signal with electro-chemical measuring apparatus respectively
25 signal acquisition contacts connection of collection terminal.
In the present embodiment, electro-chemical measuring apparatus is controlled by the single-chip microcomputer being embedded, according to 25 metal electrode bars
Position, successively 25 signal acquisition points of acquisition order current signal.
The lossless detection method of online prison detection metal welding jointses galvanic corrosion sensitiveness is realized by step：
Step 1：According to welded seam area surface configuration and the suitable electrode probe beam of material selection and adjustment probe beam curved surface.
Test sample is the welding point of Q235 steel in the present embodiment, and welded seam area is smaller to occupy middle, and surface is parallel with mother metal.Entirely
The surface area of welding point part is 10*10mm, therefore the electrode probe beam selected is as shown in Fig. 2 probe material uses
Q235 carbon steels, the arrangement of 5*5 parallel arrays, probe diameter 1.5mm, spacing 1.0mm.
Step 2：Suitable reference electrode and salt bridge are chosen according to electrolyte solution.Because electrolyte solution is 3.5%
NaCl, therefore reference electrode adds salt bridge from saturated calomel electrode.
Step 3：Fixed using will pop one's head in beam and reference electrode of appropriate device, wherein electrode probe beam passes through ion conductive membrane
Contacted with test sample, reference electrode is placed in electrolyte solution by salt bridge, and ion conductive membrane is infiltrated in electrolyte solution
In.The corrosion potential and electric current on measurement device welding point surface as shown in Figure 1 are used in the present embodiment.Ion conductive membrane both ends
In electrolyte solution, electrode probe beam is positioned over above welding point and contacted by ion conductive membrane with test sample for infiltration,
Reference electrode is placed in 3.5%NaCl electrolyte solutions by salt bridge, finally will probe beam and reference electricity using fixing device
It is extremely fixed.
Step 4：Current signal, wherein electrode probe beam and electrochemical measurement are gathered using the device with zero resistance circuit
Device working end is connected, and test sample is connected with electrochemical testing device earth terminal, and reference electrode (adding salt bridge) is surveyed with electrochemistry
Try the connection of equipment and instrument reference electrode end.
Step 5：Opsition dependent is with detected materials composition galvanic couple pair respectively for each probe, the determination sampling according to the characteristics of material
At the moment, after sampling terminates, a probe is changed, until all probe samplings terminate.
Step 6：The current potential and current signal of collection are analyzed and processed, export current potential and current distributing figure, it is determined that examination
The anode and cathode region on sample surface simultaneously judges that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.After being gathered in the present embodiment
Electric current and potential data carry out processing drawing using the self-editing difference programs of Matlab.It is accurate in order to show the measurement of the inventive method
Degree, the specific embodiment only list the current potential and current distributing figure after welding point position corrosion 10min.
Embodiment 2
A kind of the cannot-harm-detection device for detecting metal welding jointses galvanic corrosion sensitiveness, including：Welding point examination to be measured
Sample, conductive membrane, electrolyte solution container, reference electrode, multi-channel electrode probe, electro-chemical measuring apparatus and computer, it is to be measured
Weld joint samples include welding point mother metal area and welding point weld metal zone, and welding point weld metal zone occupy welding point to be measured
Centre position, welding point weld metal zone surface is parallel with welding point mother metal area, multi-channel electrode probe area be more than weldering
The area in joint welding area is connect, multi-channel electrode, which is popped one's head in, is arranged on the upper surface of weld joint samples to be measured, and multi-channel electrode is visited
Head is made up of phenolic resin and metal electrode bar, electrolyte solution container include two identical the first electrolyte solution containers and
Second electrolyte solution container, the first electrolyte solution container and the second electrolyte solution container are symmetrically arranged at weldering to be measured
The both sides of joint samples are connect, in the bottom (test side of popping one's head in) of multi-channel electrode probe and the upper table of weld joint samples to be measured
Be provided with conductive membrane between face, the film surface of conductive membrane respectively with the bottom of multi-channel electrode probe and weld joint samples to be measured
Upper surface is in close contact, and the two side ends of conductive membrane infiltrate in the first electrolyte solution container and the second electrolyte solution appearance respectively
In the electrolyte solution of device, one end of reference electrode is placed on the first electrolyte solution container by salt bridge (not marked in figure)
In electrolyte solution, the top (i.e. Signal connector end) of multi-channel electrode probe, the weldering of reference electrode, weld joint samples to be measured
Joined respectively by the signal acquisition terminal of wire and electro-chemical measuring apparatus (not marked in figure), demarcation the bottom surface for meeting joint welding area
It is connected than electrode tip (not marked in figure) with earth terminal (not marked in figure), electro-chemical measuring apparatus includes zero point resistance circuit, electricity
The signal output part of chemical measurement device is connected with computer.
In the present embodiment, from saturated calomel electrode as reference electrode.
In the present embodiment, it is respectively arranged with 3.5% in the first electrolyte solution container and the second electrolyte solution container
NaCl solution.
In the present embodiment, from filter paper as conductive membrane.
In the present embodiment, the metal electrode bar material of multi-channel electrode probe is the carbon steel of Q235 models, wherein more logical
Road electrode probe is equidistantly fixed in phenolic resin by the carbon steel rod of 400 Q235 models, is arranged into 20 rows 20, at equal intervals
0.1mm is arranged in phenolic resin, a diameter of 1.0mm of the carbon steel rod of Q235 models.
In the present embodiment, the signal acquisition terminal of electro-chemical measuring apparatus (is not marked including 400 signal acquisition contacts in figure
Go out).
In the present embodiment, the specific of the signal acquisition terminal of the top of multi-channel electrode probe and electro-chemical measuring apparatus connects
The mode of connecing is：400 metal electrode bars of multi-channel electrode probe pass through 400 wires letter with electro-chemical measuring apparatus respectively
400 signal acquisition contacts connection of number collection terminal.
In the present embodiment, electro-chemical measuring apparatus is controlled by the single-chip microcomputer being embedded, according to 400 metal electrode bars
Position, successively 400 signal acquisition points of acquisition order current signal.
The lossless detection method of online prison detection metal welding jointses galvanic corrosion sensitiveness is realized by step：
Step 1：According to welded seam area surface configuration and the suitable electrode probe beam of material selection and adjustment probe beam curved surface.
Test sample is the welding point of Q235 steel in the present embodiment, and welded seam area is smaller to occupy middle, and surface is parallel with mother metal.Entirely
The surface area of welding point part is 25*25mm, therefore the electrode probe beam selected is as shown in Fig. 2 probe material uses
Q235 carbon steels, the arrangement of 20*20 parallel arrays, probe diameter 1.0mm, spacing 0.1mm.
Step 2：Suitable reference electrode and salt bridge are chosen according to electrolyte solution.Because electrolyte solution is 3.5%
NaCl, therefore reference electrode adds salt bridge from saturated calomel electrode.
Step 3：Fixed using will pop one's head in beam and reference electrode of appropriate device, wherein electrode probe beam passes through ion conductive membrane
Contacted with test sample, reference electrode is placed in electrolyte solution by salt bridge, and ion conductive membrane is infiltrated in electrolyte solution
In.The corrosion potential and electric current on measurement device welding point surface as shown in Figure 1 are used in the present embodiment.Ion conductive membrane both ends
In electrolyte solution, electrode probe beam is positioned over above welding point and contacted by ion conductive membrane with test sample for infiltration,
Reference electrode is placed in 3.5%NaCl electrolyte solutions by salt bridge, finally will probe beam and reference electricity using fixing device
It is extremely fixed.
Step 4：Current signal, wherein electrode probe beam and electrochemical measurement are gathered using the device with zero resistance circuit
Device working end is connected, and test sample is connected with electrochemical testing device earth terminal, and reference electrode (adding salt bridge) is surveyed with electrochemistry
Try the connection of equipment and instrument reference electrode end.
Step 5：Opsition dependent is with detected materials composition galvanic couple pair respectively for each probe, the determination sampling according to the characteristics of material
At the moment, after sampling terminates, a probe is changed, until all probe samplings terminate.
Step 6：The current potential and current signal of collection are analyzed and processed, export current potential and current distributing figure, it is determined that examination
The anode and cathode region on sample surface simultaneously judges that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.After being gathered in the present embodiment
Electric current and potential data carry out processing drawing using the self-editing difference programs of Matlab.It is accurate in order to show the measurement of the inventive method
Degree, the specific embodiment only list the current potential and current distributing figure after welding point position corrosion 10min.
Embodiment 3
A kind of the cannot-harm-detection device for detecting metal welding jointses galvanic corrosion sensitiveness, including：Welding point examination to be measured
Sample, conductive membrane, electrolyte solution container, reference electrode, multi-channel electrode probe, electro-chemical measuring apparatus and computer, it is to be measured
Weld joint samples include welding point mother metal area and welding point weld metal zone, and welding point weld metal zone occupy welding point to be measured
Centre position, welding point weld metal zone surface is parallel with welding point mother metal area, multi-channel electrode probe area be more than weldering
The area in joint welding area is connect, multi-channel electrode, which is popped one's head in, is arranged on the upper surface of weld joint samples to be measured, and multi-channel electrode is visited
Head is made up of phenolic resin and metal electrode bar, electrolyte solution container include two identical the first electrolyte solution containers and
Second electrolyte solution container, the first electrolyte solution container and the second electrolyte solution container are symmetrically arranged at weldering to be measured
The both sides of joint samples are connect, in the bottom (test side of popping one's head in) of multi-channel electrode probe and the upper table of weld joint samples to be measured
Be provided with conductive membrane between face, the film surface of conductive membrane respectively with the bottom of multi-channel electrode probe and weld joint samples to be measured
Upper surface is in close contact, and the two side ends of conductive membrane infiltrate in the first electrolyte solution container and the second electrolyte solution appearance respectively
In the electrolyte solution of device, one end of reference electrode is placed on the first electrolyte solution container by salt bridge (not marked in figure)
In electrolyte solution, the top (i.e. Signal connector end) of multi-channel electrode probe, the weldering of reference electrode, weld joint samples to be measured
Joined respectively by the signal acquisition terminal of wire and electro-chemical measuring apparatus (not marked in figure), demarcation the bottom surface for meeting joint welding area
It is connected than electrode tip (not marked in figure) with earth terminal (not marked in figure), electro-chemical measuring apparatus includes zero point resistance circuit, electricity
The signal output part of chemical measurement device is connected with computer.
In the present embodiment, from saturated calomel electrode as reference electrode.
In the present embodiment, it is respectively arranged with 3.5% in the first electrolyte solution container and the second electrolyte solution container
NaCl solution.
In the present embodiment, from filter paper as conductive membrane.
In the present embodiment, the metal electrode bar material of multi-channel electrode probe is the carbon steel of Q235 models, wherein more logical
Road electrode probe is equidistantly fixed in phenolic resin by the carbon steel rod of 225 Q235 models, is arranged into 15 rows 15, at equal intervals
0.5mm is arranged in phenolic resin, a diameter of 1.4mm of the carbon steel rod of Q235 models.
In the present embodiment, the signal acquisition terminal of electro-chemical measuring apparatus (is not marked including 225 signal acquisition contacts in figure
Go out).
In the present embodiment, the specific of the signal acquisition terminal of the top of multi-channel electrode probe and electro-chemical measuring apparatus connects
The mode of connecing is：225 metal electrode bars of multi-channel electrode probe pass through 225 wires letter with electro-chemical measuring apparatus respectively
225 signal acquisition contacts connection of number collection terminal.
In the present embodiment, electro-chemical measuring apparatus is controlled by the single-chip microcomputer being embedded, according to 225 metal electrode bars
Position, successively 225 signal acquisition points of acquisition order current signal.
The lossless detection method of online prison detection metal welding jointses galvanic corrosion sensitiveness is realized by step：
Step 1：According to welded seam area surface configuration and the suitable electrode probe beam of material selection and adjustment probe beam curved surface.
Test sample is the welding point of Q235 steel in the present embodiment, and welded seam area is smaller to occupy middle, and surface is parallel with mother metal.Entirely
The surface area of welding point part is 15*15mm, therefore the electrode probe beam selected is as shown in Fig. 2 probe material uses
Q235 carbon steels, the arrangement of 25*25 parallel arrays, probe diameter 1.4mm, spacing 0.5mm.
Step 2：Suitable reference electrode and salt bridge are chosen according to electrolyte solution.Because electrolyte solution is 3.5%
NaCl, therefore reference electrode adds salt bridge from saturated calomel electrode.
Step 3：Fixed using will pop one's head in beam and reference electrode of appropriate device, wherein electrode probe beam passes through ion conductive membrane
Contacted with test sample, reference electrode is placed in electrolyte solution by salt bridge, and ion conductive membrane is infiltrated in electrolyte solution
In.The corrosion potential and electric current on measurement device welding point surface as shown in Figure 1 are used in the present embodiment.Ion conductive membrane both ends
In electrolyte solution, electrode probe beam is positioned over above welding point and contacted by ion conductive membrane with test sample for infiltration,
Reference electrode is placed in 3.5%NaCl electrolyte solutions by salt bridge, finally will probe beam and reference electricity using fixing device
It is extremely fixed.
Step 4：Current signal, wherein electrode probe beam and electrochemical measurement are gathered using the device with zero resistance circuit
Device working end is connected, and test sample is connected with electrochemical testing device earth terminal, and reference electrode (adding salt bridge) is surveyed with electrochemistry
Try the connection of equipment and instrument reference electrode end.
Step 5：Opsition dependent is with detected materials composition galvanic couple pair respectively for each probe, the determination sampling according to the characteristics of material
At the moment, after sampling terminates, a probe is changed, until all probe samplings terminate.
Step 6：The current potential and current signal of collection are analyzed and processed, export current potential and current distributing figure, it is determined that examination
The anode and cathode region on sample surface simultaneously judges that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.After being gathered in the present embodiment
Electric current and potential data carry out processing drawing using the self-editing difference programs of Matlab.It is accurate in order to show the measurement of the inventive method
Degree, the specific embodiment only list the current potential and current distributing figure after welding point position corrosion 10min.
Embodiment 4
A kind of the cannot-harm-detection device for detecting metal welding jointses galvanic corrosion sensitiveness, including：Welding point examination to be measured
Sample, conductive membrane, electrolyte solution container, reference electrode, multi-channel electrode probe, electro-chemical measuring apparatus and computer, it is to be measured
Weld joint samples include welding point mother metal area and welding point weld metal zone, and welding point weld metal zone occupy welding point to be measured
Centre position, welding point weld metal zone surface is parallel with welding point mother metal area, multi-channel electrode probe area be more than weldering
The area in joint welding area is connect, multi-channel electrode, which is popped one's head in, is arranged on the upper surface of weld joint samples to be measured, and multi-channel electrode is visited
Head is made up of phenolic resin and metal electrode bar, electrolyte solution container include two identical the first electrolyte solution containers and
Second electrolyte solution container, the first electrolyte solution container and the second electrolyte solution container are symmetrically arranged at weldering to be measured
The both sides of joint samples are connect, in the bottom (test side of popping one's head in) of multi-channel electrode probe and the upper table of weld joint samples to be measured
Be provided with conductive membrane between face, the film surface of conductive membrane respectively with the bottom of multi-channel electrode probe and weld joint samples to be measured
Upper surface is in close contact, and the two side ends of conductive membrane infiltrate in the first electrolyte solution container and the second electrolyte solution appearance respectively
In the electrolyte solution of device, one end of reference electrode is placed on the first electrolyte solution container by salt bridge (not marked in figure)
In electrolyte solution, the top (i.e. Signal connector end) of multi-channel electrode probe, the weldering of reference electrode, weld joint samples to be measured
Joined respectively by the signal acquisition terminal of wire and electro-chemical measuring apparatus (not marked in figure), demarcation the bottom surface for meeting joint welding area
It is connected than electrode tip (not marked in figure) with earth terminal (not marked in figure), electro-chemical measuring apparatus includes zero point resistance circuit, electricity
The signal output part of chemical measurement device is connected with computer.
In the present embodiment, from saturated calomel electrode as reference electrode.
In the present embodiment, it is respectively arranged with 3.5% in the first electrolyte solution container and the second electrolyte solution container
NaCl solution.
In the present embodiment, from filter paper as conductive membrane.
In the present embodiment, the metal electrode bar material of multi-channel electrode probe is the carbon steel of Q235 models, wherein more logical
Road electrode probe is equidistantly fixed in phenolic resin by the carbon steel rod of 100 Q235 models, is arranged into 10 rows 10, at equal intervals
0.2mm is arranged in phenolic resin, a diameter of 1.2mm of the carbon steel rod of Q235 models.
In the present embodiment, the signal acquisition terminal of electro-chemical measuring apparatus (is not marked including 100 signal acquisition contacts in figure
Go out).
In the present embodiment, the specific of the signal acquisition terminal of the top of multi-channel electrode probe and electro-chemical measuring apparatus connects
The mode of connecing is：100 metal electrode bars of multi-channel electrode probe pass through 100 wires letter with electro-chemical measuring apparatus respectively
100 signal acquisition contacts connection of number collection terminal.
In the present embodiment, electro-chemical measuring apparatus is controlled by the single-chip microcomputer being embedded, according to 100 metal electrode bars
Position, successively 100 signal acquisition points of acquisition order current signal.
In the present embodiment, weld joint samples to be measured be Q235 steel welding point, the smaller residence in welding point weld metal zone
In centre, its surface is parallel with welding point mother metal area, and the surface area of whole welding point part is 15*15mm.
The course of work of the present invention is as follows：
In the use of the present invention, weld joint samples to be measured are contacted by the conductive membrane with being impregnated with 3.5%NaCl solution,
Its surface can corrode.During detection, the welding point weld metal zone of weld joint samples to be measured is set to be connect with electrochemical testing device
Ground terminal turns on, and reference electrode turns on the demarcation reference electrode end of electro-chemical measuring apparatus；Pass through electro-chemical measuring apparatus
Embedded single-chip microcomputer control, electro-chemical measuring apparatus gathers current signal successively, and the current signal of collection is defeated by and electrification
Learn the connected computer of measurement apparatus；Computer analyzes and processes to the current signal of collection, output current distribution map.In electricity
In flow point Butut, each electrode all correspond to a two-dimensional coordinate, and such as first electrode correspond to coordinate (1,1), second
Electrode respective coordinates (1,2), until the tenth electrode respective coordinates (1,10).But abscissa enters since the tenth electrode
Row changes, and correspond to coordinate (2,1), and similarly until the 20th electrode respective coordinates (2,10), then abscissa changes again.
Change once every ten electrodes, abscissa, until the 100th electrode pair answers (10,10).Can be with according to current distributing figure
Determine the anode and cathode region on weld joint samples surface and judge that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.
In the present embodiment, after weld joint samples to be measured corrode 10min in the present invention, its current signal is gathered, and
Send the current signal of collection to computer, the weld joint samples to be measured corrosion that computer analyzing and processing current data obtains
As shown in Figure 4, it is welding point examination to be measured that electric current large area is can see from accompanying drawing 4 to current distributing figure after 10min
The welding point mother metal area of sample both sides, these regions can occur preferentially to corrode as anode；Current value smaller area is weldering to be measured
The welding point weld metal zone among joint samples is connect, these regions are not corroded as negative electrode.This and welding to be measured in accompanying drawing 3
The erosion profile figure result that joint samples obtain after 3.5%NaCl salt spray test chamber internal corrosion 10min is consistent, i.e., weldering to be measured
Connect the welding point mother metal area of joint samples and welding point weld metal zone and form galvanic corrosion, and welding point mother metal area is as sun
Pole is corroded, and welding point weld metal zone is not corroded as negative electrode by protection.In figure 4, maximum galvanic corrosion
Current value is in 2 μ A/cm2To 3 μ A/cm2Between, judge galvanic couple corruption according to Galvanic Current size according in navigation mark HB 5374-1987
Lose the corrosion class category C levels of sensitivity, weld seam and mother metal galvanic couple pair.
The lossless detection method of online prison detection metal welding jointses galvanic corrosion sensitiveness is realized by step：
Step 1：According to welded seam area surface configuration and the suitable electrode probe beam of material selection and adjustment probe beam curved surface.
Test sample is the welding point of Q235 steel in the present embodiment, and welded seam area is smaller to occupy middle, and surface is parallel with mother metal.Entirely
The surface area of welding point part is 15*15mm, therefore the electrode probe beam selected is as shown in Fig. 2 probe material uses
Q235 carbon steels, the arrangement of 10*10 parallel arrays, probe diameter 1.2mm, spacing 0.2mm.
Step 2：Suitable reference electrode and salt bridge are chosen according to electrolyte solution.Because electrolyte solution is 3.5%
NaCl, therefore reference electrode adds salt bridge from saturated calomel electrode.
Step 3：Fixed using will pop one's head in beam and reference electrode of appropriate device, wherein electrode probe beam passes through ion conductive membrane
Contacted with test sample, reference electrode is placed in electrolyte solution by salt bridge, and ion conductive membrane is infiltrated in electrolyte solution
In.The corrosion potential and electric current on measurement device welding point surface as shown in Figure 1 are used in the present embodiment.Ion conductive membrane both ends
In electrolyte solution, electrode probe beam is positioned over above welding point and contacted by ion conductive membrane with test sample for infiltration,
Reference electrode is placed in 3.5%NaCl electrolyte solutions by salt bridge, finally will probe beam and reference electricity using fixing device
It is extremely fixed.
Step 4：Current signal, wherein electrode probe beam and electrochemical measurement are gathered using the device with zero resistance circuit
Device working end is connected, and test sample is connected with electrochemical testing device earth terminal, and reference electrode (adding salt bridge) is surveyed with electrochemistry
Try the connection of equipment and instrument reference electrode end.
Step 5：Opsition dependent is with detected materials composition galvanic couple pair respectively for each probe, the determination sampling according to the characteristics of material
At the moment, after sampling terminates, a probe is changed, until all probe samplings terminate.
Step 6：The current potential and current signal of collection are analyzed and processed, export current potential and current distributing figure, it is determined that examination
The anode and cathode region on sample surface simultaneously judges that the galvanic corrosion sensitiveness at each position of welding point is strong and weak.After being gathered in the present embodiment
Electric current and potential data carry out processing drawing using the self-editing difference programs of Matlab.It is accurate in order to show the measurement of the inventive method
Degree, the specific embodiment only list the current potential and current distributing figure after welding point position corrosion 10min.
After the corrosion 10min obtained referring to Fig. 4 specific embodiment of the invention Computer analyzing and processing corrosion current data
Current distributing figure, it can be seen that electric current large area is both sides mother metal, corresponding current potential smaller area simultaneously corresponding erosion profile figure
In corrosion area, these regions can occur preferentially to corrode as anode；Current value smaller area is intermediate weld area, corresponding electricity
Non- corrosion area in position large area and corresponding erosion profile figure, these regions are not corroded as negative electrode.As a result show
The galvanic corrosion of mother metal and weld seam can occur in 3.5%NaCl electrolyte solutions for the welding point position, and mother metal is as anode
Corrode, and weld seam is protected as negative electrode, this is consistent with Fig. 3 erosion profile figure results.It is distributed referring to Fig. 4 corrosion currents
Figure, maximum galvanic corrosion current value is in 2 μ A/cm2To 3 μ A/cm2Between, according to by electric according to galvanic couple in navigation mark HB5374-1987
Stream size judges the corrosion class category C levels of galvanic corrosion sensitivity, weld seam and mother metal galvanic couple pair.It is referring to Fig. 4 it can be seen that red
The deeper zonal corrosion current value of color is bigger, i.e. galvanic corrosion sensitiveness is stronger.
In summary, the method in the embodiment of the present invention can with online real time collecting welding point in corrosive environment each portion
The corrosion current divided, obtains current distributing figure, judges anode region and cathodic region that galvanic corrosion occurs, to grind so as to visual and clear
The galvanic corrosion sensitiveness for studying carefully each position of welding point is strong and weak.This detects the galvanic couple at metal welding jointses position for online prison in real time
Corrosion susceptibility provides a kind of important method, and it is simple to operate, measurement accuracy is high, there is important practical significance.
Exemplary description has been done to the present invention above, it should explanation, in the situation for the core for not departing from the present invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent substitution of creative work equal
Fall into protection scope of the present invention.
Claims (7)
1. the metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device, it is characterised in that nothing
Damage detection means includes weld joint samples to be measured, conductive membrane, electrolyte solution container, reference electrode, and multi-channel electrode is popped one's head in,
Electro-chemical measuring apparatus and computer, the weld joint samples to be measured include welding point mother metal area and welding point weld seam
Area, the welding point weld metal zone occupy the centre position of the welding point to be measured, welding point weld metal zone surface with
The welding point mother metal area is parallel, and the area of the multi-channel electrode probe is more than the area of the welding point weld metal zone,
The multi-channel electrode probe is arranged on the upper surface of the weld joint samples to be measured, and the multi-channel electrode probe is by phenolic aldehyde
Resin and metal electrode bar composition, the metal electrode bar are distributed in the phenolic resin in M rows N row are equidistant, and the M is big
In being less than or equal to 20 equal to 5, the N is more than or equal to 5 and is less than or equal to 20, and the electrolyte solution container includes two identicals the
One electrolyte solution container and the second electrolyte solution container, the first electrolyte solution container and second electrolyte are molten
Liquid container is symmetrically arranged at the both sides of the weld joint samples to be measured, is visited in the bottom of multi-channel electrode probe
The conductive membrane, the film surface point of the conductive membrane are provided between head test side and the upper surface of the weld joint samples to be measured
It is not in close contact with the bottom of multi-channel electrode probe and the upper surface of the weld joint samples to be measured, and the conducting
The electrolyte that the two side ends of film infiltrate in the first electrolyte solution container and the second electrolyte solution container respectively is molten
In liquid, one end of the reference electrode is placed on by salt bridge in the electrolyte solution of the second electrolyte solution container, institute
Top i.e. Signal connector end, the reference electrode, the bottom surface of the welding point weld metal zone for stating multi-channel electrode probe are distinguished
It is connected by wire with signal acquisition terminal, demarcation reference electrode end and the earth terminal of the electro-chemical measuring apparatus, the electrification
Learning measurement apparatus includes zero resistance circuit, and the signal output part of the electro-chemical measuring apparatus is connected with the computer；According to
Following step is carried out：
Step 1：Conductive membrane is placed in weld joint samples to be measured and the multichannel being made up of phenolic resin and metal electrode bar
It is the upper of test side and the weld joint samples to be measured of popping one's head in the bottom of multi-channel electrode probe between electrode probe
Be provided with the conductive membrane between surface, the metal electrode bar by the conductive membrane it is orderly be emitted on the welding to be measured
Joint samples upper surface, the metal electrode bar are distributed in the phenolic resin in M rows N row are equidistant, and the M is more than or equal to
5 are less than or equal to 20, and the N is more than or equal to 5 and is less than or equal to 20, and reference electrode surface treatment is standby；
Step 2：The reference electrode is fixed in the electrolyte solution of the first electrolyte container by salt bridge, the conductive membrane
Both ends simultaneously infiltrate in the electrolyte solution of first electrolyte container and the second electrolyte container；
Step 3：Current signal is gathered using the electro-chemical measuring apparatus with zero resistance circuit, wherein the multi-channel electrode is visited
Head is connected with the electro-chemical measuring apparatus working end, and the weld joint samples lower surface to be measured fills with the electro-chemical test
Put earth terminal to be connected, the reference electrode (adding salt bridge) is connected with the reference electrode end set in the electrochemical testing device；
Step 4：Each metal electrode bar of multi-channel electrode probe is turning on weld joint samples to be measured at different moments respectively
Galvanic couple pair is formed, and current signal corresponding to gathering, terminate and by the current signal of collection until all metal electrode bars sample
It is defeated by the computer being connected with electro-chemical measuring apparatus；
Step 5：Computer analyzes and processes to the current signal of collection, output current distribution map, in current distributing figure, often
A piece electrode all correspond to a two-dimensional coordinate, i.e. current distributing figure shows the metal electrode bar array being equally spaced in M rows N row
The CURRENT DISTRIBUTION on corresponding weld joint samples surface to be measured, different corrosion currents are told by current distributing figure coordinate and sat
The position on weld joint samples surface to be measured corresponding to mark, corrosion current value is bigger, shows the galvanic corrosion sensitiveness of the position
It is stronger.
2. the metal welding jointses position galvanic corrosion sensitivity Detection according to claim 1 based on the cannot-harm-detection device
Method, it is characterised in that from saturated calomel electrode as reference electrode.
3. the metal welding jointses position galvanic corrosion sensitivity Detection according to claim 1 based on the cannot-harm-detection device
Method, it is characterised in that be respectively arranged with 3.5% in the first electrolyte solution container and the second electrolyte solution container
NaCl solution.
4. the metal welding jointses position galvanic corrosion sensitivity Detection according to claim 1 based on the cannot-harm-detection device
Method, it is characterised in that the ion conductive membrane for that can turn on ion, but can not conduct electrons, such as sponge, timber, filter
Paper, bamboo, the filter paper of 3.5%NaCl solution is preferably soaked with as ion conductive membrane.
5. the metal welding jointses position galvanic corrosion sensitivity Detection according to claim 1 based on the cannot-harm-detection device
Method, it is characterised in that the metal electrode bar uses the carbon steel of Q235 models, a diameter of 1.0- of the metal electrode bar
1.5mm。
6. the metal welding jointses position galvanic corrosion sensitivity Detection according to claim 1 based on the cannot-harm-detection device
Method, it is characterised in that a diameter of 1.2mm of the metal electrode bar.
7. the metal welding jointses position galvanic corrosion sensitivity Detection according to claim 1 based on the cannot-harm-detection device
Method, it is characterised in that the multi-channel electrode detecting head surface is parallel with the upper surface of the weld joint samples to be measured, and institute
The worksheet area for stating the covering of multi-channel electrode detecting head surface is not more than the surface area of the weld joint samples to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682386.2A CN107576709A (en) | 2015-02-25 | 2015-02-25 | Metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682386.2A CN107576709A (en) | 2015-02-25 | 2015-02-25 | Metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device |
| CN201510087246.1A CN105319158B (en) | 2015-02-25 | 2015-02-25 | The cannot-harm-detection device and method of online prison detection metal welding jointses position galvanic corrosion sensitiveness |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510087246.1A Division CN105319158B (en) | 2015-02-25 | 2015-02-25 | The cannot-harm-detection device and method of online prison detection metal welding jointses position galvanic corrosion sensitiveness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107576709A true CN107576709A (en) | 2018-01-12 |
Family
ID=55247023
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510087246.1A Expired - Fee Related CN105319158B (en) | 2015-02-25 | 2015-02-25 | The cannot-harm-detection device and method of online prison detection metal welding jointses position galvanic corrosion sensitiveness |
| CN201710682386.2A Pending CN107576709A (en) | 2015-02-25 | 2015-02-25 | Metal welding jointses position galvanic corrosion sensitive detection method based on the cannot-harm-detection device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510087246.1A Expired - Fee Related CN105319158B (en) | 2015-02-25 | 2015-02-25 | The cannot-harm-detection device and method of online prison detection metal welding jointses position galvanic corrosion sensitiveness |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105319158B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562625A (en) * | 2018-03-23 | 2018-09-21 | 天津大学 | The non-destructive testing device and method of integral type on-line checking metal soldering tip welding position galvanic corrosion sensibility |
| CN108562535A (en) * | 2018-03-23 | 2018-09-21 | 天津大学 | A kind of the corrosion electrochemistry non-destructive testing device and detection method of detection cracks of metal surface |
| CN109900630A (en) * | 2019-01-31 | 2019-06-18 | 中国科学院金属研究所 | It is a kind of to evaluate complicated metal pair to the test device and method of galvanic corrosion |
| CN110823690A (en) * | 2019-11-05 | 2020-02-21 | 南京钢铁股份有限公司 | Method for rapidly evaluating atmospheric environmental stress corrosion sensitivity of low-alloy structural steel |
| WO2020149862A1 (en) * | 2019-01-18 | 2020-07-23 | The Boeing Company | Systems and methods for measuring galvanic corrosion potential |
| CN115753585A (en) * | 2022-11-22 | 2023-03-07 | 中国海洋大学 | In-situ detection system and detection method based on stress and gap coupling effect |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680492B (en) * | 2016-04-29 | 2020-09-01 | 天津大学 | Method for measuring corrosion depth in galvanic corrosion of metal welding joint part |
| CN109781616A (en) * | 2017-11-13 | 2019-05-21 | 广西大学 | It is a kind of for detecting the experimental rig corroded in molten salt reactor and detection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861453A (en) * | 1986-12-26 | 1989-08-29 | Nippon Steel Corporation | Corrosion detecting probe for steel buried in concrete |
| CN1046042A (en) * | 1989-04-01 | 1990-10-10 | 北京科技大学 | Electric chemistry by use of concentration-beam microelectrode corrosion principle measuring method and device |
| CN2236653Y (en) * | 1995-07-04 | 1996-10-02 | 厦门大学 | Matrix electrode |
| CN102680543A (en) * | 2012-05-28 | 2012-09-19 | 天津大学 | Sensor for electrochemical detection on surface defects of metal material and use method of sensor |
| CN103076376A (en) * | 2013-01-08 | 2013-05-01 | 苏州热工研究院有限公司 | Array electrode for testing corrosion states of metal and coated metal |
| CN203148889U (en) * | 2013-03-19 | 2013-08-21 | 中国石油大学(华东) | Nondestructive testing device |
| CN103418924A (en) * | 2013-08-06 | 2013-12-04 | 中国石油大学(华东) | Modularized array electrode of precision simulate welded joint and manufacturing method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5549803A (en) * | 1994-01-14 | 1996-08-27 | Honeywell Inc. | Smart fastener |
| CN2750317Y (en) * | 2004-12-09 | 2006-01-04 | 中国船舶重工集团公司第七二五研究所 | Multi-channel galvanic corrosion experiment data collecting device |
| JP2007024872A (en) * | 2005-06-16 | 2007-02-01 | Taiheiyo Cement Corp | Compound sensor module, sheath pipe, and sheath pipe joint member |
| CN102072873B (en) * | 2009-11-25 | 2012-11-14 | 中国石油天然气集团公司 | Experiment device for couple corrosion |
| CN103278442B (en) * | 2013-05-17 | 2016-02-17 | 中国海洋石油总公司 | A kind of underground pipe column galvanic corrosion pick-up unit |
| CN203908922U (en) * | 2014-07-01 | 2014-10-29 | 国家电网公司 | Online real-time corrosion resistance monitoring device for weathering resistant steel |
| CN204116199U (en) * | 2014-09-23 | 2015-01-21 | 中国石油天然气股份有限公司 | Device for evaluating corrosion resistance of metal composite pipe |
| CN204514780U (en) * | 2015-02-25 | 2015-07-29 | 天津大学 | A kind of the cannot-harm-detection device detecting metal welding joints bimetallic corrosion susceptibility |
-
2015
- 2015-02-25 CN CN201510087246.1A patent/CN105319158B/en not_active Expired - Fee Related
- 2015-02-25 CN CN201710682386.2A patent/CN107576709A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861453A (en) * | 1986-12-26 | 1989-08-29 | Nippon Steel Corporation | Corrosion detecting probe for steel buried in concrete |
| CN1046042A (en) * | 1989-04-01 | 1990-10-10 | 北京科技大学 | Electric chemistry by use of concentration-beam microelectrode corrosion principle measuring method and device |
| CN2236653Y (en) * | 1995-07-04 | 1996-10-02 | 厦门大学 | Matrix electrode |
| CN102680543A (en) * | 2012-05-28 | 2012-09-19 | 天津大学 | Sensor for electrochemical detection on surface defects of metal material and use method of sensor |
| CN103076376A (en) * | 2013-01-08 | 2013-05-01 | 苏州热工研究院有限公司 | Array electrode for testing corrosion states of metal and coated metal |
| CN203148889U (en) * | 2013-03-19 | 2013-08-21 | 中国石油大学(华东) | Nondestructive testing device |
| CN103418924A (en) * | 2013-08-06 | 2013-12-04 | 中国石油大学(华东) | Modularized array electrode of precision simulate welded joint and manufacturing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 唐晓 等: "NaCl薄液膜下不锈钢腐蚀行为研究", 《腐蚀科学与防护技术》 * |
| 张全城 等: "周浸加速循环腐蚀试验中耐候钢锈层的电化学特征", 《机械工程材料》 * |
| 王荣 等: "《管道的腐蚀与控制》", 31 March 2013 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562625A (en) * | 2018-03-23 | 2018-09-21 | 天津大学 | The non-destructive testing device and method of integral type on-line checking metal soldering tip welding position galvanic corrosion sensibility |
| CN108562535A (en) * | 2018-03-23 | 2018-09-21 | 天津大学 | A kind of the corrosion electrochemistry non-destructive testing device and detection method of detection cracks of metal surface |
| CN108562535B (en) * | 2018-03-23 | 2023-10-27 | 天津大学 | Corrosion electrochemical nondestructive detection device and detection method for detecting metal surface defects |
| WO2020149862A1 (en) * | 2019-01-18 | 2020-07-23 | The Boeing Company | Systems and methods for measuring galvanic corrosion potential |
| CN112930474A (en) * | 2019-01-18 | 2021-06-08 | 波音公司 | System and method for measuring galvanic corrosion potential |
| US11796451B2 (en) | 2019-01-18 | 2023-10-24 | The Boeing Company | Systems and methods for measuring galvanic corrosion potential |
| CN109900630A (en) * | 2019-01-31 | 2019-06-18 | 中国科学院金属研究所 | It is a kind of to evaluate complicated metal pair to the test device and method of galvanic corrosion |
| CN110823690A (en) * | 2019-11-05 | 2020-02-21 | 南京钢铁股份有限公司 | Method for rapidly evaluating atmospheric environmental stress corrosion sensitivity of low-alloy structural steel |
| CN115753585A (en) * | 2022-11-22 | 2023-03-07 | 中国海洋大学 | In-situ detection system and detection method based on stress and gap coupling effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105319158A (en) | 2016-02-10 |
| CN105319158B (en) | 2017-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105319158B (en) | The cannot-harm-detection device and method of online prison detection metal welding jointses position galvanic corrosion sensitiveness | |
| CN100385231C (en) | Electrochemical noise technique for corrosion | |
| CN204514780U (en) | A kind of the cannot-harm-detection device detecting metal welding joints bimetallic corrosion susceptibility | |
| CN108007985A (en) | The high-flux detection method of high-strength steel sea water corrosion resistant | |
| CN105954186B (en) | The measurement device and assay method of metal welding joints position galvanic corrosion | |
| CN207557160U (en) | System is monitored for the Multifunctional corrosion of reinforced concrete structure | |
| CN107505256A (en) | Weld corrosion monitoring device and its monitoring method under stress can be simulated | |
| CN105319248B (en) | A kind of electrochemistry the cannot-harm-detection device and method for detecting cracks of metal surface | |
| CN103278551A (en) | Active carbon double-electrode system-based heavy metal electrochemical sensor and method for detection of heavy metals by the active carbon double-electrode system-based heavy metal electrochemical sensor | |
| CN108362637B (en) | Corrosion electrochemical testing device and corrosion electrochemical testing method | |
| CN108303453A (en) | The sensor and its construction method of In vivo detection salicylic acid and heteroauxin simultaneously | |
| CN204514850U (en) | A kind of galvanochemistry the cannot-harm-detection device detecting cracks of metal surface | |
| Hampel et al. | Efficient detection of localized corrosion processes on stainless steel by means of scanning electrochemical microscopy (SECM) using a multi-electrode approach | |
| CN108061745A (en) | A kind of method for surveying feed solution system oxidation-reduction potential using current-vs-time and open circuit potential combined techniques | |
| CN110095336A (en) | A kind of online sound emission of tank bottom stress corrosion-electrochemistry Collaborative experiment device | |
| CN106248770A (en) | A kind of electrochemical method of quick detection fenifrothion pesticide residues | |
| CN109612921B (en) | Corrosion monitoring sensor and preparation method thereof | |
| CN104713820A (en) | Method for detecting corrosion state of metal in concrete | |
| CN209673703U (en) | Drag-line corrosion monitor | |
| CN107655814B (en) | The high-flux detection method that alloying element influences mild steel corrosion resistance | |
| CN201069429Y (en) | An electrochemical sensor | |
| CN108061704A (en) | A kind of single electrode crossed array wire beam electrode system corroded under Test coverage object | |
| CN108562535A (en) | A kind of the corrosion electrochemistry non-destructive testing device and detection method of detection cracks of metal surface | |
| CN208568550U (en) | A kind of corrosion electrochemistry non-destructive testing device detecting cracks of metal surface | |
| CN208568662U (en) | The non-destructive testing device of integral type on-line checking galvanic corrosion sensibility |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |