CN107966378A - A kind of detection device and its method of the test of Automotive Paint Film Properties scratch-resistant - Google Patents

A kind of detection device and its method of the test of Automotive Paint Film Properties scratch-resistant Download PDF

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Publication number
CN107966378A
CN107966378A CN201810022917.XA CN201810022917A CN107966378A CN 107966378 A CN107966378 A CN 107966378A CN 201810022917 A CN201810022917 A CN 201810022917A CN 107966378 A CN107966378 A CN 107966378A
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China
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plate
detection
paint film
sand paper
magnet
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CN201810022917.XA
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Chinese (zh)
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CN107966378B (en
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陈丽红
徐晨葵
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浙江吉利汽车有限公司
浙江吉润汽车有限公司
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56Investigating resistance to wear or abrasion
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details

Abstract

The present invention relates to the detection device and its method of a kind of test of Automotive Paint Film Properties scratch-resistant, belong to paint film detection technique field.In order to solve the problems, such as existing easily occur slipping and falling out and make accuracy difference, a kind of detection device and its method of the test of Automotive Paint Film Properties scratch-resistant are provided, including pedestal, sand paper, handle and roller, pedestal includes plate-like bottom plate, and bottom plate at least one end has connecting portion one, and one end and the connecting portion one of handle are rotatably connected, roller is rollably installed on handle close to the side of connecting portion one, magnet is fixed with the upside of bottom plate, sand paper is fixed on bottom plate lower surface, and sand paper is located at below magnet;The region that the corresponding paint film of vehicle body need to detect is chosen during detection, tests its initial average gloss;By the suction between magnet and vehicle body, sand paper is fitted in surface, after carrying out reciprocation cycle movement, test final average gloss;Calculate little loss of gloss.The present invention can avoid the occurrence of to be slipped and fallen out relatively, improves detection accuracy.

Description

A kind of detection device and its method of the test of Automotive Paint Film Properties scratch-resistant
Technical field
The present invention relates to the detection device and its method of a kind of test of Automotive Paint Film Properties scratch-resistant, belongs to paint film detection technique neck Domain.
Background technology
With the rapid development of Domestic Automotive Industry, automobile has become the indispensable instrument of people's lives, while people are to vapour The appearance requirement of car is also higher and higher, most important for automobile with good gloss appearance.And client generally reflects vapour Car painting paint film is washable intolerant to scraping, and not, this just requires car paint film scraping and wiping resistance performance also increasingly stringent.At present, both at home and abroad Scraping and wiping resistance performance test for Automotive Paint Film Properties is also without relevant standard test method, on vehicle body paint film scraping and wiping resistance performance Test without fixed universal method.
And it is existing to evaluating Automotive Paint Film Properties scraping and wiping resistance performance, by the judgement of user's subjectivity, there are larger deviation, nothing The excellent case of the test scraping and wiping resistance performance of standard measure.It is existing in order to quantitative test scraping and wiping resistance performance, pass through processing Suitable test plate (panel) carries out relevant performance test, such as Chinese patent application (publication number:CN105973739A) one kind is disclosed to comment Valency Automotive Paint Film Properties marresistance can method, including sand paper flour milling is laid in the surface of test plate (panel) paint film downward, then in sand paper table Place the counterweight of a 500g in face;Sand paper is pulled, sand paper is moved in test plate (panel) coating surface, back and forth toward to repetition, observes test plate (panel) The scratch situation of coating surface, evaluates scratch result.Although the device is relatively simple, between its counterweight and sand paper Easily there is opposite slip, and the test plate (panel) placed in the plane can only be detected, and in actually using, the vehicle body of automobile is not The paint film face being on horizontal plane, so that making device using being above greatly limited;In addition, the detection mode Still can not qualitatively it be tested.
And for example Chinese patent (publication number:CN105181505A) disclose measure car paint film scraping and wiping resistance performance method and Scratch-resistant tester, the tester include test-bed, front wheel, rear wheel, weight, sand paper, preceding drawstring and rear-pulling rope.The party Method is prepared including model, and the original average gloss G of the model is measured with glossometerO;Above-mentioned model is fixed on scratch resistance again Wipe on tester, the sand paper of setting is rubbed repeatedly model, test the model average gloss G after being rubbed1;Before calculating friction Gloss retention Δ G afterwards.Although its can carry out certain quantitative test as a result, it can only also examine sample Survey, directly the vehicle body of vehicle can not be detected;And the weight of the tester is only located in surface, easily there is opposite slide Or obscission, the sample under horizontality can only be detected, and since experiment process is frequent, easily break drawstring And the phenomenon to come off, easily make the accuracy of detection reduce.
The content of the invention
Present invention defect existing in the prior art for more than, proposes a kind of detection dress of Automotive Paint Film Properties scratch-resistant test Put and its method, solve the problems, such as be how to realize avoiding device occur it is opposite slip and fall out make to apply on sand paper it is constant Pressure improves the accuracy of detection.
An object of the present invention technical scheme is that, a kind of test of Automotive Paint Film Properties scratch-resistant Detection device, including pedestal and sand paper, the device further include handle and roller, and the pedestal includes plate-like bottom plate, described At least one end of bottom plate has connecting portion one, and one end and the connecting portion one of the handle are rotatably connected, and the roller can roll Ground is fixed with magnet installed in handle on the upside of the side of connecting portion one, the bottom plate, and the sand paper is fixed on bottom plate Lower surface, the sand paper are located at the lower section of magnet.
The present apparatus is equipped with sand paper by directly in the magnet that is fixedly arranged at the upper side of bottom plate in the lower surface of bottom plate, utilizes The magnetic attraction of magnet, enables devices to inhale in the region to be detected of vehicle body, keeps fixing and making sand paper stronger for magnet It is fitted on the surface of vehicle body paint film, can either so avoids magnet and sand paper from the opposite phenomenon slipped and fallen out each occur, The accuracy of detection and the convenience of operation are improved, and directly the paint film on vehicle body can be detected, without sample It is detected, and due to being to carry out application pressure using the suction of magnet, using the constant magnet suction between magnet and vehicle body, Constant friction is produced to vehicle body, the vehicle body coating surface of different angle can be detected, solving existing can only lead to The defects of making sample is detected in the horizontal plane is crossed, realizes fast and efficiently effect.In addition, the present apparatus passes through in bottom plate One end be equipped with handle and roller, in use, due to being mutually rotatably connected between handle and bottom plate, by driving handle, just It can realize that the present apparatus moves back and forth back and forth when detecting, avoid easily the phenomenon broken occur using drawstring etc., can also avoid There is obscission;And using the structure that is rotatably connected, can according to the flatness or angle of inclination situation in region to be detected, The angle of handle is adjusted at any time, and pressure when detecting holding will not be by because of the extra stress shadow that testing staff operates and produces Ring, improve the accuracy of detection.
In the detection device of above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, the roller is two, the handle With grip part and plate-like connecting portion two, the handle is rotatably connected by connecting portion two and connecting portion one;The company The downside of socket part two has two axis mounting bases being symmetrical set, and has through hole one in two axis mounting bases, described logical Rotation axis is equipped with hole one, two rollers are respectively provided at the both ends of rotation axis.By making connecting portion two plate-like, it is therefore an objective to be More preferable installation roller, and symmetrical two rollers are set, it is possible to increase balance, preferably controls the stability of stress.
In the detection device of above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, the connecting portion one is in be bent upwards Shape, the upper end of the connecting portion one have symmetrically arranged mounting hole;Have on the connecting portion two and run through through hole two, it is described to pass through Rotatable connecting shaft is equipped with reach through hole two, the both ends of the connecting shaft are separately mounted on mounting hole.It is in bending to enable Enough make the Smoothing angle between bottom plate and vehicle body coating surface to be detected with a transition, make to be more advantageous to moving back and forth Operation;Meanwhile make in being bent upwards, to be also beneficial to make the junction of bottom plate and handle that there is certain altitude, allow to and roller Height substantially remain in consistent horizontality, make when promoting the present apparatus, can make Impact direction substantially with bottom plate In-plane is in parallel, and the direction for being also equivalent to that Impact direction can be made to move with device is consistent, avoids detecting during detection The extra stress in region, the further accuracy for improving detection.
In the detection device of above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, the lower surface of the bottom plate is glued and is equipped with Felt pan, the sand paper removably stick in the lower surface of felt pan.Sand paper is preferably played fixed effect, and use felt Pad is fixed, and sand paper is had convertibility, ensures the friction effect of sand paper, improves the accuracy of detection.
In the detection device of above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, the pedestal further includes top plate, it is described Magnet is fixed between top plate and bottom bracing plate, and upper end and the top plate of the magnet lean, and the top plate and bottom plate pass through bolt Connection is fixed.Allow to that preferably magnet is fixed, further avoid the occurrence of the effect to come off.
The second object of the present invention technical scheme is that, a kind of test of Automotive Paint Film Properties scratch-resistant Method, this method comprise the following steps:
A, the region that the corresponding paint film of vehicle body need to detect is chosen, after cleaning treatment, gloss is carried out to vehicle body coating surface Degree detection, tests its initial average gloss Bi;
B, using above-mentioned detection device, according to stressed difference is applied, select the magnet of different magnetic attractions, by magnet with Suction between vehicle body makes sand paper be fitted in the surface for needing detection zone, promotes detection device to carry out reciprocation cycle movement, to inspection After survey region progress rub cycle 10~30 times, then glossiness detection is carried out, tested through circulation friction rear coating surface Final average gloss Bj;
C, according to the glossiness tested twice, little loss of gloss Δ B=Bi-Bj is calculated.
Sand paper is oppressed by using the suction between magnet and vehicle body, scraping inspection is carried out to the paint film of vehicle body different parts Survey, and paint film scraping and wiping resistance performance is shown come quantitative according to the little loss of gloss of detection, have the advantages that reliability is high, need to only lead to The effect of quantitative detection can just be reached by crossing calculating little loss of gloss, generally required little loss of gloss≤5UB, be then judged as closing Lattice, are then judged as unqualified if more than 5UB.Meanwhile the surface for needing detection zone by being bonded sand paper, promote detection device Shuttling movement is carried out, magnet or sand paper can be avoided the opposite phenomenon slided occur, so as to ensure the accuracy of detection.Separately Outside, in addition this method be without making test plate (panel), have easy to operate, and directly the paint film on vehicle body can be detected, had The high effect of applicability.
In the method for above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, glossiness described in step A and step B is examined The environmental testing temperature of survey is 20 DEG C~25 DEG C, and envionmental humidity is 45%~55%.Make in the wet of certain temperature It is detected under degree environment, paint film is lain substantially in the environmental condition under use state, it is possible to increase the accuracy of detection, energy The scraping and wiping resistance performance of enough more effectively reaction paint films.
In the method for above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, sand paper described in step B grinds for M classes P2400 Light sand paper (SIC).Purpose is to improve frictional force of the sand paper to paint film, naturally it is also possible to which the thicker sand paper of selection is surveyed Examination.
In the method for above-mentioned Automotive Paint Film Properties scratch-resistant test, preferably, described in step B applies stressed size For 5N~8N.Certain application pressure is constant pressure value when testing every time here, makes the scratch-resistant in the pressure limit The getable guarantee of property, the applicability effect of the test of scraping and wiping resistance performance.
In conclusion compared with prior art, the present invention has the following advantages:
1. setting magnet and sand paper is fixed on the lower surface of bottom plate, magnet can be utilized to apply constant attraction to sand paper Pressure, actuator carry out paint film scraping test by sand paper, and magnet and sand paper can be avoided opposite slip and fall out occur Phenomenon, the accuracy of detection is improved, therefore the present invention directly can be detected the paint film on vehicle body, without sample It is detected, realizes fast and efficiently effect.
2. setting handle and roller and handle is rotatably connected, the angle for adjusting handle at any time can be played, makes holding Pressure condition during detection is basically identical, improves the accuracy of detection and improves the effect of service life.
3. the method for the present invention directly can be detected the paint film of vehicle body, without in addition making sample, there is operation The advantages of simple, and the scraping and wiping resistance performance for the detection vehicle body paint film that can be quantified, there is the high effect of the accuracy of detection.
Brief description of the drawings
Fig. 1 is the three-dimensional structure diagram of the detection device of this Automotive Paint Film Properties scratch-resistant test.
Fig. 2 is the dimensional structure diagram of the handle in the detection device of this Automotive Paint Film Properties scratch-resistant test.
Fig. 3 is the stereochemical structure signal after the handle in the detection device of this Automotive Paint Film Properties scratch-resistant test is combined with roller Figure.
In figure, 1, pedestal;11st, bottom plate;111st, connecting portion one;112nd, mounting hole;12nd, top plate;13rd, bolt;2nd, sand paper;3、 Handle;31st, grip part;32nd, connecting portion two;321st, axis mounting base;322nd, through hole one;323rd, through through hole two;4th, roller;5th, magnetic Iron;6th, rotation axis;7th, connecting shaft;8th, felt pan.
Embodiment
Below by specific embodiments and the drawings, the technical solutions of the present invention will be further described, but this Invention is not limited to these embodiments.
With reference to shown in Fig. 1-Fig. 3, the detection device of this Automotive Paint Film Properties scratch-resistant test includes pedestal 1 and sand paper 2, more important , which further includes handle 3 and roller 4, wherein, pedestal 1 includes plate-like bottom plate 11, and bottom plate 11 here can be adopted It is made of a variety of materials such as plastics or iron or Steel material etc., it is, however, preferred that being made of iron or Steel material material.Mainly by It is iron in the main component of iron or Steel material, and iron can be magnetized in itself, magnet 5 is preferably inhaled on its surface On, and improve fixed fastness.At least one end of above-mentioned bottom plate 11 has connecting portion 1, by one end of handle 3 and connection Portion 1 is rotatably connected, and the rotatable handle 3 that is installed on of roller 4 is close to the side of connecting portion 1, in the upper of bottom plate 11 Side is fixed with magnet 5, and magnet 5 makes the magnetism for more effectively ensureing magnet 5, the selection of magnet 5 can preferably with permanent magnet To replace different permanent magnet according to the requirement of magnetic attraction, and sand paper 3 is set to be fixed on the lower surface of bottom plate 11, sand paper 3 is located at The lower section of magnet 5.It can so keep the pressure that the suction of magnet 5 produces preferably to be applied on sand paper 3, improve detection Accuracy.
Further, as shown in figure 3, above-mentioned roller 4 is preferably two, and handle 4 is made to there is grip part 31 and in plate The connecting portion 2 32 of shape, is preferably integrally formed structure between grip part 31 and connecting portion 2 32, is conducive to processing and fabricating, even The downside of socket part 2 32 has two axis mounting bases 321 being symmetrical set, and has through hole 1 in two axis mounting bases 321, Rotation axis 6 is equipped with through hole 1, two rollers 4 are respectively provided at the both ends of rotation axis 6.Further say, connecting portion one 111 is curved in being bent up, and the upper end of connecting portion 1 is had symmetrically arranged mounting hole 112;Such as offer inside recessed Groove, mounting hole 112 is offered in the both sides of groove, can be blind hole or through hole, meanwhile, make to have on connecting portion 2 32 and run through Through hole 2 323, opens up along the axial direction with rotation axis 6, and rotatable connecting shaft 7, connecting shaft 7 are equipped with through hole 2 323 Both ends be separately mounted on mounting hole 112, it is mutually rotatable by making between connecting portion 2 32 and connecting shaft 7, adjusted to reach The effect of whole position, preferably makes to be set in parallel between connecting portion 2 32 and bottom plate 11, is further ensured that when promoting the present apparatus Impact direction is set to be acted on along the in-plane of bottom plate, what reduction operated is additionally applied with pressure to sand paper, improves detection Accuracy.It is in bending to make connecting portion 1, the end face of bottom plate 11 is smoothly bent upwards, and is conducive to improve operability.This In, the both ends of bottom plate 11 is respectively provided with the connecting portion 1 being bent upwards.Allow to realize both sides symmetry operation, carry The convenience that the high present apparatus uses.Certainly, being rotatably connected between connecting portion 1 and connecting portion 2 32 here can also It is directly by the way of hinged, can equally realizes mutually equivalent function and effect.As shown in Figure 1, the lower surface of bottom plate 11 It is viscous to be equipped with felt pan 8, felt pan 8 can be such as bonded on the lower surface of bottom plate 11 by glue, sand paper 2 removably sticks in felt The lower surface of pad 8.Here it can make to be bonded in a manner of magic is glued between felt pan 8 and sand paper 2, sand paper 2 need to only be buckled and be sticked to It is convenient to dismantle and just improve operation and the convenience used on felt pan 8.Certainly, sand paper 2 here can also pass through Other dismountable modes are fixed on the lower surface of felt pan 8, as clamped by clip etc. or directly by glue bonding Mode, can also be bonded using double faced adhesive tape.Pedestal 1 can also be made to include top plate 12, magnet 5 is fixed on 12 He of top plate Between bottom plate 11, upper end and the top plate 12 of magnet 5 lean, and top plate 12 and bottom plate 11 are connected by bolt 13 and fixed.Using spiral shell Bolt 13, which is fixed, has detachability, allows to easily replace magnet 5, and can play good fixed effect, avoids operating It is improper, magnet 5 phenomenon to come off is occurred.
It is specific implementation method of the detection device of this Automotive Paint Film Properties scratch-resistant test when specifically used below.
Embodiment 1
The region that the corresponding paint film of vehicle body of automobile need to detect is chosen, automobile engine cover (hood) is selected in the present embodiment On paint film be detected, the detection zone of a 50mm × 150mm is put up with paper self-adhesive tape, the region be preferably surfacing, Trace and dust etc. are not referred to, by the detection zone of the 50mm × 150mm after cleaning treatment, with distilled water and soft lint-free Cloth carries out wiping cleaning, then, carries out glossiness detection to the surface in vehicle body paint film region to be detected using gloss meter, passes through survey Examination six times, calculates the glossiness of six times, then calculates average value, it is 95.75UB to obtain its initial average gloss Bi;
Then, using this detection device, according to stressed difference is applied, the magnet 5 of different magnetic attractions is selected, preferably with Permanent magnet, is fixed on the upside of bottom plate 11, and being fitted in sand paper 2 by the suction between magnet 5 and vehicle body bonnet needs to examine The surface in region is surveyed, and makes the magnetic attraction of permanent magnet be 5N to the pressure and device of sand paper 2 constant pressure in itself and value, sand Paper 2 holds the grip part 31 for handle 3 of stopping using M classes P2400 polishing sand paper (SIC), 10um granularities, testing staff, and makes two Roller 4 is using bonnet as support, and testing staff is by promoting detection device to carry out reciprocation cycle movement, in the 12cm of detection zone Distance in carry out reciprocation cycle movement, after carrying out rub cycle 30 times to detection zone, then the coating surface to detection zone Glossiness detection is carried out, it is 91.9UB to test the final average gloss Bj through 30 circulation friction rear coating surfaces, this In final average gloss Bj be also to carry out repeating detection by the six different detection zones chosen on bonnet obtaining Glossiness calculates average value and obtains.Wherein, when carrying out original gloss and final glossiness detects, environment test temperature is kept It it is 20 DEG C, envionmental humidity is 55%.According to the above-mentioned average gloss tested twice, little loss of gloss Δ B is calculated =Bi-Bj=3.85UB, it can make little loss of gloss≤5UB, then be qualification.
Embodiment 2
The region that the corresponding paint film of vehicle body of automobile need to detect is chosen, the front door on automobile left side or right side is selected in the present embodiment On paint film be detected, the detection zone of a 50mm × 150mm is put up with paper self-adhesive tape, the region be preferably surfacing, Trace and dust etc. are not referred to, by the detection zone of the 50mm × 150mm after cleaning treatment, with distilled water and soft lint-free Cloth carries out wiping cleaning, then, carries out glossiness detection to the paint film at corresponding front door region surface to be detected using gloss meter, leads to Test six times are crossed, the glossiness of six times is calculated, then calculates average value, it is 95.0UB to obtain its initial average gloss Bi;
Then, using this detection device, according to stressed difference is applied, the magnet 5 of different magnetic attractions is selected, is used here Permanent magnet, is fixed on the upside of bottom plate 11, is fitted in sand paper 2 by the suction between magnet 5 and vehicle body left or right front door The surface of detection zone is needed, and makes the magnetic attraction of permanent magnet be 6N to the constant pressure of sand paper 2, due to the application pressure to front door Force direction is mutually perpendicular to the gravity direction suffered by the present apparatus, and device will not produce pressure to sand paper 2.Therefore, in the present embodiment In disregard the pressure that the present apparatus in itself produces left or right front door, sand paper 2 is using M classes P2400 polishing sand paper (SIC), 10um Spend, testing staff holds the grip part 32 for handle 3 of stopping, and makes two rollers 4 using front door as support, and testing staff, which passes through to promote, to be examined Survey device and carry out reciprocation cycle movement, after detection zone progress rub cycle 20 times, then to left or right front door detection zone Coating surface carries out glossiness detection, tests the final average gloss Bj through 20 circulation friction rear coating surfaces and is 88.6UB, final average gloss Bj is also to carry out weight by the six different detection zones chosen on left or right front door here Recheck the glossiness calculating average value measured and obtain the value of final average gloss Bj.Wherein, carry out original gloss and During final glossiness detection, it is 25 DEG C to keep environment test temperature, and envionmental humidity is 45%.It is above-mentioned twice to test Average gloss, calculates little loss of gloss Δ B=Bi-Bj=6.4UB, its little loss of gloss is more than 5UB, then to be unqualified.
Embodiment 3
Choose the region that need to detect of the corresponding paint film of vehicle body of automobile, selected in the present embodiment the paint film that car roof covers into Row detection, puts up the detection zone of a 50mm × 150mm with paper self-adhesive tape, the region be preferably surfacing, finger trace and Dust etc., by the detection zone of the 50mm × 150mm after cleaning treatment, can be carried out with distilled water and soft lint-free cloth Wipe it is clean after, then, using gloss meter to the paint film of corresponding roof region surface to be detected carry out glossiness detection, lead to Test six times are crossed, the glossiness of six times is calculated, then calculates average value, it is 96.4UB to obtain its initial average gloss Bi;
Then, using this detection device, according to stressed difference is applied, select the magnet 5 of different magnetic attractions, use here Permanent magnet, is fixed on the upside of bottom plate 11, and being fitted in sand paper 2 by the suction between magnet 5 and car body top cover needs to detect The surface in region, since head cover lies substantially in horizontality, when in use, it need to consider the pressure of device in itself, it is overall Make the magnetic attraction of permanent magnet to the pressure and device of sand paper 2 pressure itself and value be 8N, equivalent to total perseverance to sand paper Constant-pressure is 8N.Sand paper 2 holds the gripping for handle 3 of stopping using M classes P2400 polishing sand paper (SIC), 10um granularities, testing staff Portion 31, and make two rollers 4 using head cover as support, testing staff is by promoting detection device progress reciprocation cycle movement, to inspection After survey region progress rub cycle 10 times, then glossiness detection is carried out to the coating surface of head cover detection zone, tested through 10 times The final average gloss Bj of circulation friction rear coating surface is 91.8UB, and final average gloss Bj is also to pass through here Choose six different detection zones on head cover and repeatedlys detect obtained glossiness calculating average value and obtain.Wherein, exist When carrying out original gloss and the detection of final glossiness, it is 22 DEG C to keep environment test temperature, and envionmental humidity is 50%.The above-mentioned average gloss tested twice, calculates little loss of gloss Δ B=Bi-Bj=4.6UB, it can make glossiness Loss≤5UB, then be qualification.
Specific embodiment described in the present invention is only to spirit explanation for example of the invention.Technology belonging to the present invention is led The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.

Claims (9)

1. a kind of detection device of Automotive Paint Film Properties scratch-resistant test, including pedestal (1) and sand paper (2), it is characterised in that the device Handle (3) and roller (4) are further included, the pedestal (1) includes plate-like bottom plate (11), at least one end of the bottom plate (11) With connecting portion one (111), one end of the handle (3) is rotatably connected with connecting portion one (111), and the roller (4) can roll The dynamic handle (3) that is installed on is fixed with magnet (5), the sand paper on the side of connecting portion one (11), the bottom plate (11) (2) lower surface of bottom plate (11) is fixed on, the sand paper (2) is located at the lower section of magnet (5).
2. the detection device of Automotive Paint Film Properties scratch-resistant test according to claim 1, it is characterised in that the roller (4) is Two, the handle (3) has grip part (31) and plate-like connecting portion two (32), and the handle (3) passes through connecting portion two (32) it is rotatably connected between connecting portion one (111);The downside of the connecting portion two (32) has two be symmetrical set Axis mounting base (321), has through hole one (322) on two axis mounting bases (321), is equipped with the through hole one (322) Rotation axis (6), two rollers (4) are respectively provided at the both ends of rotation axis (6).
3. the detection device of Automotive Paint Film Properties scratch-resistant test according to claim 2, it is characterised in that the connecting portion one (111) curved in being bent up, the upper end of the connecting portion one (111) has symmetrically arranged mounting hole (112);The connecting portion Have on two (32) and run through through hole two (323), it is described to be equipped with rotatable connecting shaft (7), the company in through hole two (323) The both ends of spindle (7) are separately mounted on mounting hole (112).
4. the detection device tested according to the 1 or 2 or 3 Automotive Paint Film Properties scratch-resistant of claim, it is characterised in that the bottom plate (11) lower surface is glued removably sticks in the lower surface of felt pan (8) equipped with felt pan (8), the sand paper (2).
5. the detection device tested according to the 1 or 2 or 3 Automotive Paint Film Properties scratch-resistant of claim, it is characterised in that the pedestal (1) further include top plate (12), the magnet (5) is fixed between top plate (12) and bottom plate (11), the upper end of the magnet (5) with Top plate (12) leans, and the top plate (12) and bottom plate (11) are connected by bolt (13) and fixed.
A kind of 6. method of Automotive Paint Film Properties scratch-resistant test, it is characterised in that this method comprises the following steps:
A, the region that the corresponding paint film of vehicle body need to detect is chosen, after cleaning treatment, glossiness inspection is carried out to vehicle body coating surface Survey, test its initial average gloss Bi;
B, using detection device described in the claims 1-5 any one, according to stressed difference is applied, different magnetic are selected The magnet (5) of power, being fitted in sand paper (2) by suction of the magnet (5) between vehicle body needs the surface of detection zone, promotes inspection Survey device and carry out reciprocation cycle movement, after detection zone progress rub cycle 10~30 times, then carry out glossiness detection, test Final average gloss Bj through circulation friction rear coating surface;
C, according to the glossiness tested twice, little loss of gloss Δ B=Bi-Bj is calculated.
7. the method for Automotive Paint Film Properties scratch-resistant test according to claim 6, it is characterised in that described in step A and step B The environmental testing temperature of glossiness detection is 20 DEG C~25 DEG C, and envionmental humidity is 45%~55%.
8. the method tested according to the Automotive Paint Film Properties scratch-resistant of claim 6 or 7, it is characterised in that sand paper described in step B (2) sand paper is polished for M classes 2400.
9. the method tested according to the Automotive Paint Film Properties scratch-resistant of claim 6 or 7, it is characterised in that applied described in step B Stressed size is 5N~8N.
CN201810022917.XA 2018-01-10 2018-01-10 Detection device and method for scratch resistance test of automobile paint film Active CN107966378B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001066A (en) * 2018-06-13 2018-12-14 浙江吉利汽车有限公司 Automotive Paint Film Properties crocking resistance detection device and its detection method

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