CN104345136B - Paint covering power determinator and covering power assay method - Google Patents

Paint covering power determinator and covering power assay method Download PDF

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Publication number
CN104345136B
CN104345136B CN201310700831.5A CN201310700831A CN104345136B CN 104345136 B CN104345136 B CN 104345136B CN 201310700831 A CN201310700831 A CN 201310700831A CN 104345136 B CN104345136 B CN 104345136B
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China
Prior art keywords
covering power
base plate
paint
vertical base
test paper
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Expired - Fee Related
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CN201310700831.5A
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CN104345136A (en
Inventor
徐晨葵
安聪慧
冯擎峰
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Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Zhejiang Jirun Automobile Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Zhejiang Jirun Automobile Co Ltd
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Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Geely Automobile Research Institute Co Ltd, Zhejiang Jirun Automobile Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN201310700831.5A priority Critical patent/CN104345136B/en
Publication of CN104345136A publication Critical patent/CN104345136A/en
Application granted granted Critical
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Abstract

The invention discloses a kind of paint covering power determinator and covering power assay method, comprise bracing frame, be located at the column on bracing frame and be located at the vertical baffle plate on column; The vertical base plate that can move up and down along column is provided with between column and vertical baffle plate, the surface middle part relative with vertical baffle plate of vertical base plate is provided with covering power test paper, gap is provided with between covering power test paper and vertical baffle plate, vertical base plate and column removably connect, and described vertical base plate is cold-rolled steel sheet or tinplate.The present invention has the covering power that can measure paint accurately and the covering power data recorded can be directly used in the oil paint coating thickness instructed in painting dressing automobiles production operation; Save material of paint, aberration easily controls, the feature that the painting dressing automobiles quality conformance produced is good.

Description

Paint covering power determinator and covering power assay method
Technical field
The present invention relates to Painting Technology for Automobile field, especially relate to a kind of can measure paint accurately covering power and paint covering power determinator and the covering power assay method of accurate guide data can be provided painting dressing automobiles production operation.
Background technology
In painting dressing automobiles production run, spray robot needs to carry out middle painting to vehicle body, face is coated with spray painting operation.Paint film is too thin, background color can not be covered in, and paint film is too thick, wastes paint, increases cost.Therefore, before spraying, need to measure paint covering power, find the film thickness that can just hide background color.
Existing paint covering power method of testing is that root Ju GB1726-79 carries out, but the method exists following shortcoming:
1, the method is brushed equably on a surface of an by measuring paint, and the minimum paint amount that its background color is no longer presented is to measure paint covering power; But in automobile actual production process, use minimum paint figureofmerit to instruct practical operation, by best coating thickness index, then effect is better.This best coating thickness achievement data obtains by patent experiment of the present invention.After application completes, vehicle body is again through film thickness measurement, and whether result is consistent with paint covering power test figure, determines the amount of spraying paint or the spray gun translational speed that whether change robot.
2, car coating ground is cold-rolled steel sheet, film thickness need be measured with electromagnetic type film thickness gauge, film thickness on black and white lattice test paper to measure by electricity consumption magnetic film thickness instrument, simultaneously, if the ground measured is black and white lattice test paper, also lack comparability with the cold-rolled steel sheet ground in actual production, but the black and white lattice model measured is the printing of inconvenience cold-rolled steel sheet.
Chinese patent mandate publication number: CN201464468U, authorize publication date on May 12nd, 2010, disclose a kind of determination board for covering power of paint, comprise frame and handle, also be provided with assay plate and transparent panel, described assay plate and transparent panel are fixed on frame, and described assay plate is provided with chequered with black and white grid, and described transparent panel covers assay plate.The weak point of this utility model is, can not be used for painting painting dressing automobiles carrying out covering power mensuration.
Summary of the invention
Goal of the invention of the present invention is to overcome the deficiency of paint covering power determination method of the prior art to painting dressing automobiles production operation directiveness difference, provide a kind of can measure paint exactly covering power and paint covering power determinator and the covering power assay method of accurate guide data can be provided painting dressing automobiles production operation.
To achieve these goals, the present invention is by the following technical solutions:
A kind of paint covering power determinator, comprises bracing frame, is located at the column on bracing frame and is located at the vertical baffle plate on column; The vertical base plate that can move up and down along column is provided with between column and vertical baffle plate, the surface middle part relative with vertical baffle plate of vertical base plate is provided with covering power test paper, gap is provided with between covering power test paper and vertical baffle plate, vertical base plate and column removably connect, described vertical base plate is cold-rolled steel sheet or tinplate, identical with body of a motor car material.
During mensuration, spray gun horizontal movement velocity is identical, paint is sprayed on equably and hides on test paper and vertical base plate, therefore the two is identical at phase co-altitude japanning film thickness, thus paint covering power state can be observed on black and white lattice test paper, and on the cold-rolled steel sheet or tinplate of identical film thickness, test covering power index, this index film thickness μm represents.
Covering power test paper of the present invention is located on vertical base plate, and vertical base plate is cold-rolled steel sheet or tinplate, and the cold-rolled steel sheet used with the vehicle body in actual production is identical, and the paint film of the two has comparability.Therefore, the covering power data recorded can be directly used in and instruct painting dressing automobiles production operation, actual production is instructed with this thickness, by minimum paint amount, ensure that covering power, meet quality requirements, save paint consumption, reduce production cost, ensure that the consistance of the car body coating quality produced.Simultaneously, because the covering power of this invention represents with film thickness, therefore, after car body coating completes, when carrying out quality testing, directly can carry out film thickness test with electromagnetic type film thickness gauge, if in the error range of the covering power data that its data measure in patent method of testing of the present invention, proof meets the requirements, if error is too large, then needs to be solved by adjustment robot arm translational speed and the spray cup amount of spraying paint.Therefore, the paint covering power that the present invention tests out has the good effect of directiveness to actual production.
Vertical baffle plate is used for blocking vertical base plate and covering power test paper, and covering power test paper can move up and down along with vertical base plate, thus the gradient paint film that finally coating thickness gradually changes on covering power test paper and vertical base plate.Then, the covering power test paper on vertical base plate and vertical base plate is put into baking oven to dry; And to be placed on temperature be 21 DEG C to 25 DEG C, relative humidity is leave standstill in the environment of 45% to 55%; Test the dried paint film thickness on the vertical base plate corresponding with each row black and white lattice successively with electromagnetic type film thickness gauge, and data are recorded; If wherein certain row black and white grid is all covered and thickness is minimum, then the actual application be defined as by the build of the vertical base plate corresponding to this row black and white grid on production line hides thickness, the i.e. covering power of described tested paint.
As preferably, described covering power test paper is black and white lattice test papers, and the vertical base plate exposed outside black and white lattice test paper is three-back-shaped.
As preferably, support frame as described above is A-frame, and described vertical baffle plate upper end is connected with column upper end by horizontal connecting plate.
As preferably, described column adopts iron material to make, and vertical base plate and column are removably connected by the button magnet be located on vertical base plate.
As preferably, the width of described vertical baffle plate is 380mm to 410mm, and length is 480mm to 510mm, and thickness is 1.5mm to 2.1mm; Spacing between described covering power test paper and vertical baffle plate is 3 to 5mm.
The setting of the size of vertical baffle plate, covering power test paper and spacing, vertical baffle plate intactly can be blocked needing the covering power test paper blocked, paint can not enter the covering power test paper at vertical baffle plate rear by gap, guarantee the accuracy of test result.
As preferably, vertical base plate is rectangle tabular, and the length of vertical base plate is 290 to 310mm, and the width of vertical base plate is 190 to 210mm; Covering power test paper is of a size of 90mm × 150mm, and the size of black square and white square is 30mm × 30mm.
Utilize paint covering power determinator to measure a method for paint covering power, comprise the steps:
(7-1) by covering power test paper sticking double faced adhesive tape on vertical base plate, make the two maintain static, the mutually level film thickness of both guarantees is identical;
(7-2) with button magnet, vertical base plate is fixed on column;
(7-3) on covering power test paper, the impermeable protective seam of one deck is sprayed with clear varnish;
(7-4) regulate the position that vertical base plate is fixing on column, each row black and white lattice on covering power test paper are exposed outside vertical baffle plate from the bottom to top line by line;
(7-5) often expose a line black and white lattice, on the covering power test paper exposed outside vertical baffle plate and vertical base plate, evenly spray one deck paint with the spray gun being marked with tested paint;
(7-6) adjust the spray pressure of spray gun and go out paint amount, the black and white lattice of arbitrary row in the third line to fifth line are completely covered, painting the gradient paint film thinning gradually formed on covering power test paper and vertical base plate from the bottom to top;
(7-7) the black and white lattice when all row are all complete by spraying, and the covering power test paper on vertical base plate and vertical base plate is at room temperature placed 5 to 7 minutes; Then, the covering power test paper on vertical base plate and vertical base plate is put into 140 DEG C to 150 DEG C baking ovens and dries 20 to 30 minutes, baking temperature and time are determined according to paint of different nature, and principle ensures that stoving of the paint is done as standard; By vertical base plate and on covering power test paper take out from baking oven, and to be placed on temperature be 21 DEG C to 25 DEG C, relative humidity is leave standstill 30 minutes to 1 hour in the environment of 45% to 55%, and this temperature and humidity ensure to have comparability under ambient temperature and moisture condition;
(7-8) measure the dried paint film thickness be positioned on every row black and white lattice extension line of vertical base plate with electromagnetic type film thickness gauge successively, and data are recorded; If the thickness on the vertical base plate that wherein line A black and white grid is all covered and corresponding with line A is minimum, then the actual application that the build on the vertical base plate corresponding with line A black and white grid is defined as on production line is hidden thickness, i.e. the covering power of described tested paint.
A is the arbitrary row black and white grid on covering power test paper.
As preferably, in described step (7-5), often expose a line black and white lattice, evenly spray the paint of one deck 2.6 μm to 3 μm with the spray gun being marked with tested paint at the covering power test paper exposed outside vertical baffle plate and vertical base plate.
Therefore, the present invention has following beneficial effect: (1) can measure the covering power of paint accurately and the covering power data recorded can be directly used in the oil paint coating thickness instructed in painting dressing automobiles production operation; (2) save material of paint, aberration easily controls, and the painting dressing automobiles quality conformance produced is good.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is another kind of structural representation of the present invention;
Fig. 3 is a kind of process flow diagram of embodiments of the invention.
In figure: bracing frame 1, vertical baffle plate 2, vertical base plate 3, covering power test paper 4, A-frame 5, column 6, button magnet 7.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1
Embodiment is as shown in Figure 1 and Figure 2 a kind of paint covering power determinator, the vertical baffle plate 2 comprising bracing frame 1, be located at the column 6 on bracing frame and be located on column; The vertical base plate 3 that can move up and down along column is provided with between column and vertical baffle plate, the surface middle part relative with vertical baffle plate of vertical base plate is provided with covering power test paper 4, be provided with gap between covering power test paper and vertical baffle plate, vertical base plate and column removably connect.Covering power test paper is black and white lattice test papers, and the vertical base plate exposed outside black and white lattice test paper is three-back-shaped.
Bracing frame is A-frame 5, and vertical baffle plate upper end is connected with column upper end by horizontal connecting plate.Column adopts iron material to make, and vertical base plate and column are removably connected by the button magnet 7 be located on vertical base plate.
Vertical baffle plate is the cold-rolled steel sheet of 400mm × 500mm × 2mm, and the spacing between covering power test paper and vertical baffle plate is 3mm.Vertical base plate is the cold-rolled steel sheet of 300mm × 200mm, also can be tinplate.
Covering power test paper is black and white lattice test papers, and black and white lattice test paper is of a size of 90mm × 150mm, and the size of black square and white square is 30mm × 30mm, and this black and white lattice test paper is the test paper of unification of the motherland standard.
As shown in Figure 3, be a kind of method flow diagram utilizing paint covering power determinator to measure finish paint paint covering power, the existing covering power test case enumerating paint of different nature according to this process flow diagram:
The covering power method of testing of Gothic black flour paint:
Step 100, by covering power test paper sticking double faced adhesive tape on vertical base plate;
Step 200, is fixed on column with button magnet by vertical base plate;
Step 300, sprays the impermeable protective seam of one deck with clear varnish on covering power test paper;
Step 400, regulates the position that vertical base plate is fixing on column, and each row black and white lattice on covering power test paper and vertical base plate are exposed outside vertical baffle plate from the bottom to top line by line;
Step 500, often exposes a line black and white lattice, and on the covering power test paper exposed outside vertical baffle plate and vertical base plate, evenly spraying a layer thickness with the spray gun being marked with tested Gothic black flour paint is 3 μm of goth black finish paints of taxi driver brother;
Step 600, adjusts the spray pressure of spray gun and goes out paint amount, the black and white lattice of certain a line in the third line to fifth line are completely covered, and finish paint paint forms gradient paint film thinning gradually from the bottom to top on covering power test paper and vertical base plate;
Step 700, when the black and white lattice of all row are all complete by spraying, at room temperature places 7 minutes by the covering power test paper on vertical base plate and vertical base plate; Then, the covering power test paper on vertical base plate and vertical base plate is put into 140 DEG C of baking ovens to dry 30 minutes; Taken out from baking oven by covering power test paper on vertical base plate and vertical base plate, and to be placed on temperature be 25 DEG C, relative humidity is leave standstill 1 hour in the environment of 55%;
Step 800, measures the dried paint film thickness be positioned on every row black and white lattice extension line of vertical base plate successively, and data is recorded with electromagnetic type film thickness gauge, as shown in the table:
As can be seen from the above table: in the present embodiment, the all covered and vertical base plate thickness on extension line minimum (9.1 μm) of 3rd row lattice black and white grid, then the build (9.1 μm) of the vertical base plate on the 3rd row black and white grid extension line is defined as the covering thickness of the Gothic black flour paint of actual application on production line, the i.e. covering power of described Athens black flour paint, Gothic black covering power is very strong.
Embodiment 2
The covering power method of testing of the red finish paint of mocha:
Step 500 in embodiment 2 is replaced by following step:
Step 500, often exposes a line black and white lattice, evenly sprays the red finish paint of mocha that a layer thickness is 3.0 μm with the spray gun being marked with the red finish paint of tested mocha on the covering power test paper exposed outside vertical baffle plate and vertical base plate;
Step 800 in embodiment 2 is replaced by following step:
Step 800, measures the dried paint film thickness be positioned on every row black and white lattice extension line of vertical base plate successively, and data is recorded with electromagnetic type film thickness gauge, as shown in the table:
As can be seen from the above table: in the present embodiment, the all covered and vertical base plate thickness on extension line minimum (12.2 μm) of 4th row lattice black and white grid, then the build (12.2 μm) of the vertical base plate on the 4th row black and white grid extension line is defined as the covering thickness of the red finish paint of actual application mocha on production line, the i.e. covering power of the red finish paint of described mocha, mocha red finish paint covering power is general.
Embodiment 3
The covering power method of testing of Alps silver finish paint:
Step 500 in embodiment 3 is replaced by following step:
Step 500, often exposes a line black and white lattice, evenly sprays with the spray gun being marked with tested Alps silver finish paint the Alps silver finish paint that a layer thickness is 3.0 μm on the covering power test paper exposed outside vertical baffle plate and vertical base plate;
Step 800 in embodiment 3 is replaced by following step:
Step 800, measures the dried paint film thickness be positioned on every row black and white lattice extension line of vertical base plate successively, and data is recorded with electromagnetic type film thickness gauge, as shown in the table:
As can be seen from the above table: in the present embodiment, the all covered and vertical base plate thickness on extension line minimum (15.3 μm) of 5th row lattice black and white grid, then the build (15.3 μm) of the vertical base plate on the 4th row black and white grid extension line is defined as the covering thickness of the actual painting Alps silver black flour paint on production line, the i.e. covering power of described Alps silver finish paint, Alps silver finish paint covering power is general.
Should be understood that the present embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.

Claims (8)

1. paint a covering power determinator, the vertical baffle plate (2) that it is characterized in that, comprise bracing frame (1), be located at the column (6) on bracing frame and be located on column; The vertical base plate (3) that can move up and down along column is provided with between column and vertical baffle plate, the surface middle part relative with vertical baffle plate of vertical base plate is provided with covering power test paper (4), gap is provided with between covering power test paper and vertical baffle plate, vertical base plate and column removably connect, and described vertical base plate is cold-rolled steel sheet or tinplate.
2. paint covering power determinator according to claim 1, is characterized in that, described covering power test paper is black and white lattice test papers, and the vertical base plate exposed outside black and white lattice test paper is three-back-shaped.
3. paint covering power determinator according to claim 1, is characterized in that, support frame as described above is A-frame (5), and described vertical baffle plate upper end is connected with column upper end by horizontal connecting plate.
4. paint covering power determinator according to claim 1, is characterized in that, described column adopts iron material to make, and vertical base plate and column are removably connected by the button magnet (7) be located on vertical base plate.
5. paint covering power determinator according to claim 1, is characterized in that, described vertical baffle plate is rectangular slab, and the width of vertical baffle plate is 380mm to 410mm, and length is 480mm to 510mm, and thickness is 1.5mm to 2.1mm; Spacing between described covering power test paper and vertical baffle plate is 3 to 5mm.
6. the paint covering power determinator according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that, vertical base plate is rectangle tabular, and the length of vertical base plate is 290 to 310mm, and the width of vertical base plate is 190 to 210mm; Covering power test paper is of a size of 90mm × 150mm, and the size of black square and white square is 30mm × 30mm.
7. utilize the paint covering power determinator described in claim 1 to measure a method for paint covering power, it is characterized in that, comprise the steps:
(7-1) covering power test paper is pasted onto on vertical base plate;
(7-2) with button magnet, vertical base plate is fixed on column;
(7-3) on covering power test paper, the impermeable protective seam of one deck is sprayed with clear varnish;
(7-4) regulate the position that vertical base plate is fixing on column, each row black and white lattice on covering power test paper are exposed outside vertical baffle plate from the bottom to top line by line;
(7-5) often expose a line black and white lattice, on the covering power test paper exposed outside vertical baffle plate and vertical base plate, evenly spray one deck paint with the spray gun being marked with tested paint;
(7-6) adjust the spray pressure of spray gun and go out paint amount, the black and white lattice of arbitrary row in the third line to fifth line are completely covered, painting the gradient paint film thinning gradually formed on covering power test paper and vertical base plate from the bottom to top;
(7-7) the black and white lattice when all row are all complete by spraying, and the covering power test paper on vertical base plate and vertical base plate is at room temperature placed 5 to 7 minutes; Then, the baking oven covering power test paper on vertical base plate and vertical base plate being put into 140 DEG C to 150 DEG C is dried 20 to 30 minutes; Taken out from baking oven by covering power test paper on vertical base plate and vertical base plate, and to be placed on temperature be 21 DEG C to 25 DEG C, relative humidity is leave standstill 30 minutes to 1 hour in the environment of 45% to 55%;
(7-8) measure the dried paint film thickness be positioned on every row black and white lattice extension line of vertical base plate with electromagnetic type film thickness gauge successively, and data are recorded; If the thickness on the vertical base plate that wherein line A black and white grid is all covered and corresponding with line A is minimum, then the actual application that the build on the vertical base plate corresponding with line A black and white grid is defined as on production line is hidden thickness, i.e. the covering power of described tested paint.
8. the method measuring paint covering power according to claim 7, it is characterized in that, often expose a line black and white lattice in described step (7-5), evenly spray the paint of one deck 2.6 μm to 3 μm with the spray gun being marked with tested paint at the covering power test paper exposed outside vertical baffle plate and vertical base plate.
CN201310700831.5A 2013-12-18 2013-12-18 Paint covering power determinator and covering power assay method Expired - Fee Related CN104345136B (en)

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CN106198935A (en) * 2016-07-26 2016-12-07 廊坊立邦涂料有限公司 A kind of detection method of the engineering covering power of coating
CN106501188A (en) * 2016-11-15 2017-03-15 攀钢集团钛业有限责任公司 Coating covering power detection method and control methods
CN108051569B (en) * 2017-12-26 2021-03-05 奇瑞商用车(安徽)有限公司 Gradient board and experiment method based on gradient board paint covering power
CN109444137B (en) * 2018-11-11 2021-04-27 廊坊立邦涂料有限公司 Method for detecting covering power of black and white grids of coating
JP2022098774A (en) * 2020-12-22 2022-07-04 トヨタ自動車株式会社 Concealing property testing method of coating material

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