CN107192327B - Wheel gauge for coating and high-corrosion-resistance coating process for wind power main shaft adopting wheel gauge - Google Patents
Wheel gauge for coating and high-corrosion-resistance coating process for wind power main shaft adopting wheel gauge Download PDFInfo
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- CN107192327B CN107192327B CN201710424898.9A CN201710424898A CN107192327B CN 107192327 B CN107192327 B CN 107192327B CN 201710424898 A CN201710424898 A CN 201710424898A CN 107192327 B CN107192327 B CN 107192327B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to the technical field of coating, in particular to a wheel gauge for coating and a high-corrosion-resistance coating process for a wind power main shaft by adopting the wheel gauge. The wheel gauge for coating comprises a non-conductive wheel gauge body, wherein the wheel gauge body comprises two concentric discs with the same diameter and being concentric with each other and an eccentric disc positioned between the two concentric discs, the two concentric discs and the eccentric disc are connected into a whole, the diameter of the eccentric disc is smaller than that of the concentric disc, a projection circle of the eccentric disc is contained in a projection circle of the concentric disc in the projection direction of a rotating axis of the concentric disc, more than two metal wires which are not contacted with each other are buried in the wheel gauge body, two ends of each metal wire are respectively a detection end and a lead-out end, the detection ends of the metal wires extend to be level with the outer circle surface of the eccentric disc, and the lead-out ends of the metal wires extend to the end face of the concentric disc. The wheel gauge is used for on-line monitoring of the conductive wet film, and improves the coating quality of the wind power main shaft.
Description
Technical Field
The invention relates to the technical field of coating, in particular to a wheel gauge for coating and a high-corrosion-resistance coating process for a wind power main shaft by adopting the wheel gauge.
Background
Painting is an important step in the modern product manufacturing process. During the coating process, improper control of the coating thickness can lead to quality problems with the coating. For example, the coating is too thick at one time, so that stress cracks are generated in the drying process of the coating; too thin a coating increases the risk of insufficient protection of the substrate, thereby creating rust spots. Thus, control of the coating thickness is a key factor in achieving high quality coating.
In the industrial fields of wind power generation equipment manufacture, marine vessels, auxiliary equipment manufacture and the like, products are generally required to have higher anti-corrosion requirements so as to adapt to the severe environment of marine climate. For example, for a wind power main shaft in a wind generating set, the corrosion resistance requirement reaches the C4 grade requirement, an epoxy zinc-rich coating (typically, for example, interzinc52 of Acronobe, inc.) or an inorganic zinc-rich coating (for example, interzinc22 of Acronobe, inc.) with high corrosion resistance is generally adopted as a primer of the wind power main shaft, the intermediate layer is transitionally sealed by using an epoxy iron cloud coating, and finally, an acrylic polyurethane top coating is further coated. In the coating process, the epoxy zinc-rich primer or the inorganic zinc-rich primer is used as a main high anti-corrosion coating, and the thickness control of the coating is important in the coating process, so that the wet film thickness of the epoxy zinc-rich primer or the inorganic zinc-rich primer needs to be detected and controlled to ensure that the coating is dried to obtain the dry film thickness meeting the requirement.
In the prior art, for the wet film thickness detection of the epoxy zinc-rich primer or the inorganic zinc-rich primer, a traditional wet film thickness detection wheel gauge or a comb gauge is generally adopted for manual measurement. When the wheel gauge is adopted for detection, the wheel gauge rolls on the wet film, the wet film thickness is read out from the position where the edge of the eccentric wheel in the middle just touches the surface of the wet film, and the specific measurement principle is shown in fig. 5. The measuring method adopting the wheel gauge is simpler, has higher precision, but is not suitable for continuous on-line monitoring and coating control in the coating process. For this reason, in the prior art, an on-line measurement system of the wet film thickness has also been developed, for example, a special thickness gauge for coating industry has been developed by the manufacturer SPC of near infrared on-line testers in the united states, which can indirectly measure the wet film thickness of a coating layer by detecting the content of an organic solvent in paint and indirectly obtaining thickness data of the wet film through conversion. However, the method has the defect that the measurement accuracy of the thickness of the wet film is influenced by the change of the solvent content in the coating, so that the actual thickness of the wet film cannot be truly reflected; in addition, such devices are expensive.
Disclosure of Invention
In order to solve the above problems, the present invention provides a wheel gauge for coating, which can be used for measuring the thickness of a wet film with conductive properties, such as an epoxy zinc-rich primer or an inorganic zinc-rich primer, and can realize on-line monitoring and control of the thickness of the wet film after being combined with a control circuit, and the specific technical scheme is as follows:
the utility model provides a wheel rule for application, includes the non-conductive wheel rule body, the wheel rule body include two concentric discs that the diameter is the same and concentric each other and be located two concentric discs between eccentric disc, two concentric discs, eccentric disc connect into an organic wholely, the diameter of eccentric disc is less than the diameter of concentric disc, and in the projection direction of the axis of revolution of concentric disc the projection circle of eccentric disc contains in the projection circle of concentric disc the metal wire that the mutual non-contact of more than two is buried in the wheel rule body, the both ends of metal wire are detection end and extraction end respectively, the detection end of metal wire extends to the excircle surface parallel and level with the eccentric disc, the extraction end of metal wire extends to on the terminal surface of concentric disc.
When the wheel gauge is used, the concentric disc of the wheel gauge body is rolled for a circle against the surface of a part coated with the epoxy zinc-rich primer or the inorganic zinc-rich primer, the coating is adhered on the outer circle of the eccentric disc to form a section of coating belt, and the metal wire detection end in the wheel gauge body is positioned in the range of the coating belt to form electric connection because the epoxy zinc-rich primer or the inorganic zinc-rich primer is conductive coating, so that the thickness of the coating can be judged by detecting whether the metal wire at the end part of the coating belt is conducted or not.
For detecting and controlling the wet film coating, the wheel gauge for coating also comprises a control circuit, wherein the control circuit comprises an alarm device, and two outgoing ends on the end face of the concentric disc are electrically connected with the input end of the control circuit.
Preferably, the concentric circle of the wheel gauge is tangential to the outer circle of the eccentric disc. The projection circle of the eccentric disc is tangent to the projection circle of the concentric disc in the projection direction of the rotation axis of the concentric disc, the leading-out end comprises a fixed leading-out end and more than one switchable leading-out end, and the detection end of the metal wire where the fixed leading-out end is positioned on the outer circle of the eccentric disc where the tangent points of the concentric disc and the eccentric disc are positioned; the detection end of the metal wire with the switchable lead-out end is positioned on the outer circle of the eccentric disc except the tangential points of the concentric disc and the eccentric disc, one electric terminal in the input end of the control circuit is connected with the fixed lead-out end, and the other electric terminal is connected with the switchable lead-out end.
For convenience, numbers corresponding to the detection thickness are engraved at the leading-out ends of the end faces of the concentric discs of the wheel gauge body, and the units are μm.
In order to realize the setting of different wet film thickness limiting values according to the production requirement, the invention is characterized in that a rotatable elastic metal sheet is connected in series on a conductive loop between the switchable leading-out end and the input end of the control circuit, and the mounting end of the rotatable elastic metal sheet is rotatably mounted on the end surface of the concentric disc and is electrically connected with the input end of the control circuit; the other end of the rotatable elastic metal sheet is a contact, the contact is in elastic contact with the end face of the concentric disc, and the switchable leading-out end is positioned on a circumferential line through which the contact of the rotatable elastic metal sheet passes when rotating.
The installation mode of the rotatable elastic metal sheet is that a conductive slip ring is further connected between the installation end, the fixed leading-out end and the alarm device of the rotatable elastic metal sheet, the conductive slip ring comprises a fixed end and a rotating end, the fixed end of the conductive slip ring is fixed on the rotating center position of the wheel gauge body, the installation end and the fixed leading-out end of the rotatable elastic metal sheet are respectively and electrically connected with two input ends on the fixed end of the conductive slip ring, and the input end of the control circuit is electrically connected with two output ends on the rotating end of the conductive slip ring.
Preferably, the alarm device is an audible and visual alarm device. When the wet film thickness reaches a set value, the control circuit is conducted, and the alarm device gives an audible and visual alarm.
In order to enable the wheel gauge for coating to be used for controlling coating equipment, a voltage signal output end for judging whether the thickness of the wet film reaches a set value is further arranged on a conductive loop of the control circuit. The voltage signal output end of the coating equipment can be connected to a PLC (programmable logic controller) for example, so that the coating equipment is controlled to stop coating when the thickness of the wet film reaches a set value.
The wheel gauge for coating also comprises a clamping handle and a rolling bearing, wherein the wheel gauge body is rotatably arranged on the clamping handle through the rolling bearing. When the wet film thickness detection device is used, the clamping handle can be arranged on the mechanical arm or the moving mechanism, and when detection is needed, the mechanical arm or the moving mechanism conveys the wheel gauge to the coated surface to detect the wet film thickness.
The wheel gauge for coating can be used as a conventional wheel gauge, and can realize on-line monitoring of wet film thickness by combining with a control circuit.
The wheel gauge for coating can be used in the coating process of the epoxy zinc-rich primer or the inorganic zinc-rich primer of the wind power main shaft coating process, and the measurement of the wet film thickness by using the wheel gauge on line is realized.
The specific implementation process is as follows: the wind power main shaft is arranged on an electric roller frame, a spraying manipulator is arranged on one side of the wind power main shaft, the wheel gauge is arranged on the other side of the wind power main shaft, and the wheel gauge is arranged on a moving mechanism through a clamping handle; the electric roller frame, the spraying manipulator, the moving mechanism and the voltage signal output end of the wheel gauge are connected with the controller, the electric roller frame is controlled by the controller to enable the wind power main shaft to rotate, the spraying manipulator is controlled by the controller to spray epoxy zinc-rich primer or inorganic zinc-rich primer on the wind power main shaft, the wheel gauge is controlled by the controller to enable the moving mechanism to be in contact with the wind power main shaft to measure wet film thickness, and coating is stopped when the wet film thickness reaches a set value.
The controller in the coating process of the wind power main shaft can be a PLC controller.
The beneficial effects of the invention are as follows:
firstly, the wheel gauge for coating is improved to be an electronic wheel gauge by the wheel gauge in the prior art, and the online monitoring problem of the conductive high-corrosion-resistance paint such as the epoxy zinc-rich primer or the inorganic zinc-rich primer is realized on the basis of keeping the original traditional wheel gauge high in measurement precision.
Secondly, compared with the wet film on-line monitoring system in the prior art, the wheel gauge for coating disclosed by the invention adopts a direct measurement method, has high measurement precision, overcomes the defect of reduced measurement precision caused by factors such as coating solvent change in an indirect measurement method, and has relatively low manufacturing cost.
Thirdly, the set value of the wet film thickness of the wheel gauge for coating disclosed by the invention is adjustable, so that the wheel gauge can meet the requirements of coating thicknesses of different products.
Fourth, the wheel gauge for coating is applied to wet film thickness measurement of epoxy zinc-rich primer or inorganic zinc-rich primer of the wind power main shaft, and high anti-corrosion coating quality of the wind power main shaft is effectively improved.
Drawings
FIG. 1 is a schematic view of a wheel gauge for painting according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a schematic illustration of wind power spindle painting using a painting wheel gauge of the present invention;
fig. 5 is a schematic diagram of a prior art paint gauge for wet film thickness measurement.
In the figure: 100. wheel gauge body, 101, concentric disc, 102, eccentric disc, 103, metal wire, 104, detection end, 105, fixed leading-out end, 106, switchable leading-out end, 107, tangential point of concentric disc and eccentric disc, 108, conductive metal sheet fixing seat, 109, disc spring, 110, nut, 111, knob;
in the figure: 201. the device comprises a rotatable elastic metal sheet, 202, a mounting end of the rotatable elastic metal sheet, 203, a contact of the rotatable elastic metal sheet, 204, a conductive slip ring, 205, a fixed end of the conductive slip ring, 206, a rotating end of the conductive slip ring, 207, two input ends on the fixed end of the conductive slip ring, 208 and two output ends on the rotating end of the conductive slip ring;
in the figure: 300. the control circuit 301, the alarm device 302, the input end of the control circuit 303 and the voltage signal output end;
in the figure: 401. a grip handle, 402, a rolling bearing;
in the figure: 500. a wind power main shaft 600, an electric roller frame 700 and a spraying manipulator;
in the figure: 800. a moving mechanism 801, a guide seat 802 and a buffer mechanism;
in the figure: 900. and a controller.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1:
fig. 1 to 3 show a wheel gauge for painting, comprising a non-conductive wheel gauge body 100, wherein the wheel gauge body 100 comprises two concentric discs 101 with the same diameter and being concentric with each other and an eccentric disc 102 positioned between the two concentric discs 101, the two concentric discs 101 and the eccentric disc 102 are connected into a whole, the diameter of the eccentric disc 102 is smaller than that of the concentric disc 101, the projected circle of the eccentric disc 102 is contained in the projected circle of the concentric disc in the projection direction of the rotation axis of the concentric disc 101, more than two non-contact conductive metal wires are buried in the wheel gauge body 100, two ends of each metal wire are respectively a detection end 104 and a lead-out end, the detection end 104 of each metal wire is extended to be flush with the outer circle surface of the eccentric disc 102, and the lead-out end of each metal wire is extended to the end face of the concentric disc 101.
The wheel gauge for coating in this embodiment further includes a control circuit 300, the control circuit 300 includes an alarm device 301, and two of the outlets on the end surface of the concentric disc 101 are electrically connected to an input end 302 of the control circuit.
The projection circle of the eccentric disc 102 is tangent to the projection circle of the concentric disc in the projection direction of the rotation axis of the concentric disc 101, the leading-out end comprises a fixed leading-out end 105 and more than one switchable leading-out end 106, and the detection end of the metal wire where the fixed leading-out end 105 is positioned on the outer circle of the eccentric disc 102 where the tangent point 107 of the concentric disc and the eccentric disc is positioned; the detection end of the metal wire where the switchable terminal 106 is located on the outer circle of the eccentric disc 102 except the tangential point 107 of the concentric disc and the eccentric disc, one electric terminal of the input end 302 of the control circuit is connected with the fixed terminal 105, and the other electric terminal is connected with the switchable terminal 106.
In this embodiment, a rotatable elastic metal sheet 201 is further connected in series to the conductive loop between the switchable exit end 106 and the input end 302 of the control circuit, and the mounting end 202 of the rotatable elastic metal sheet is rotatably mounted on the end surface of the concentric disc 101 and is electrically connected to the input end 302 of the control circuit; the other end of the rotatable elastic metal sheet is a contact 203, the contact 203 is in elastic contact with the end surface of the concentric disc, and the switchable terminal 106 is positioned on a circumferential line through which the contact 203 of the rotatable elastic metal sheet passes when rotating.
In this embodiment, the rotatable elastic metal sheet 201 is mounted on the end surface of the concentric disc 101 through the conductive metal sheet fixing seat 108, and is pressed by the disc spring 109 and the nut 110, and a knob 111 is further provided to facilitate operation. The conductive sheet metal anchor 108 material is made of a conductive metal such as copper.
In this embodiment, a conductive slip ring 204 is further connected between the mounting end 202 and the fixed lead-out end 105 of the rotatable elastic metal sheet and the alarm device 301, the conductive slip ring 204 includes a fixed end 205 and a rotating end 206, the fixed end 205 of the conductive slip ring is fixed on the rotation center position of the wheel gauge body 100, the mounting end 202 and the fixed lead-out end 105 of the rotatable elastic metal sheet are respectively electrically connected with two input ends 208 on the fixed end 205 of the conductive slip ring, and an input end 302 of the control circuit is electrically connected with two output ends 208 on the rotating end of the conductive slip ring.
The alarm device of this embodiment is an audible and visual alarm device.
In this embodiment, the conductive loop of the control circuit is further provided with a voltage signal output end 303 for determining whether the wet film thickness reaches a set value.
The wheel gauge for painting of the present embodiment further includes a grip 401 and a rolling bearing 402, and the wheel gauge body 100 is rotatably attached to the grip 401 via the rolling bearing 402.
Example 2:
in the coating process of the epoxy zinc-rich primer or the inorganic zinc-rich primer of the wind power main shaft coating process, the wheel gauge is used for measuring the wet film thickness on line.
Example 3:
fig. 4 is a schematic diagram of wind power spindle painting using a painting wheel gauge according to the present invention. In the figure, the wind power main shaft 500 is mounted on an electric roller frame 600, a spraying manipulator 700 is arranged on one side of the wind power main shaft 500, the wheel gauge is mounted on the other side of the wind power main shaft 500, and the wheel gauge is mounted on a moving mechanism 800 through a clamping handle 401; the electric roller frame 600, the spraying manipulator 700, the moving mechanism 800 and the voltage signal output end 303 of the wheel gauge are connected with the controller 900, the electric roller frame 600 is controlled by the controller 900 to enable the wind power main shaft 500 to rotate, the spraying manipulator 700 is controlled by the controller 900 to spray the epoxy zinc-rich primer or the inorganic zinc-rich primer of the wind power main shaft, the moving mechanism 800 is controlled by the controller 900 to enable the wheel gauge to be in contact with the wind power main shaft to measure the wet film thickness, and the coating is stopped when the wet film thickness reaches a set value.
In this embodiment, the moving mechanism 800 includes a guide holder 801 and a buffer mechanism 802, and the painting wheel gauge is attached to the moving mechanism 800 via the guide holder 801 and the buffer mechanism 802. In addition, the controller 900 of the present embodiment is a PLC controller.
The wheel gauge body in this embodiment is made of a non-conductive material, such as engineering plastic, nylon or other non-metallic powder compacts, and the metal wire material inside the wheel gauge body is copper.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (7)
1. The utility model provides a wheel rule for application, includes the non-conductive wheel rule body, the wheel rule body include two diameter the same and concentric disc each other and be located two concentric disc between eccentric disc, two concentric disc, eccentric disc connect into an organic wholely, the diameter of eccentric disc is less than the diameter of concentric disc, and in the projection direction of the axis of rotation of concentric disc the projection circle of eccentric disc contains in the projection circle of concentric disc, characterized by: more than two metal wires which are not contacted with each other are buried in the wheel gauge body, the two ends of each metal wire are respectively a detection end and a leading-out end, the detection ends of the metal wires extend to be level with the outer circle surface of the eccentric disc, and the leading-out ends of the metal wires extend to the end surfaces of the concentric discs;
the control circuit comprises an alarm device, wherein the alarm device is an audible and visual alarm device, and two leading-out ends on the end face of the concentric disc are electrically connected with the input end of the control circuit; the projection circle of the eccentric disc is tangent to the projection circle of the concentric disc in the projection direction of the rotation axis of the concentric disc, the leading-out end comprises a fixed leading-out end and more than one switchable leading-out end, and the detection end of the metal wire where the fixed leading-out end is positioned on the outer circle of the eccentric disc where the tangential points of the concentric disc and the eccentric disc are positioned; the detection end of the metal wire with the switchable lead-out end is positioned on the outer circle of the eccentric disc except the tangential points of the concentric disc and the eccentric disc, one electric terminal in the input end of the control circuit is connected with the fixed lead-out end, and the other electric terminal is connected with the switchable lead-out end.
2. A wheel gauge for painting according to claim 1, characterized in that: a rotatable elastic metal sheet is connected in series on the conductive loop between the switchable lead-out end and the input end of the control circuit, and the mounting end of the rotatable elastic metal sheet is rotatably mounted on the end surface of the concentric disc and is electrically connected with the input end of the control circuit; the other end of the rotatable elastic metal sheet is a contact, the contact is in elastic contact with the end face of the concentric disc, and the switchable leading-out end is positioned on a circumferential line through which the contact of the rotatable elastic metal sheet passes when rotating.
3. A wheel gauge for painting according to claim 2, characterized in that: the rotary elastic metal sheet is characterized in that a conductive slip ring is further connected between the mounting end, the fixed leading-out end and the alarm device, the conductive slip ring comprises a fixed end and a rotary end, the fixed end of the conductive slip ring is fixed on the rotary center position of the wheel gauge body, the mounting end and the fixed leading-out end of the rotary elastic metal sheet are respectively and electrically connected with two input ends on the fixed end of the conductive slip ring, and the input end of the control circuit is electrically connected with two output ends on the rotary end of the conductive slip ring.
4. A wheel gauge for painting according to claim 1, characterized in that: and a voltage signal output end for judging whether the thickness of the wet film reaches a set value is also arranged on the conductive loop of the control circuit.
5. A wheel gauge for painting according to any one of claims 1 to 4, characterized in that: the wheel gauge body is rotatably mounted on the clamping handle through the rolling bearing.
6. A wind power spindle coating process using the wheel gauge for coating according to any one of claims 1 to 5, characterized in that: in the coating process of the epoxy zinc-rich primer or the inorganic zinc-rich primer of the wind power main shaft coating process, the wheel gauge is used for measuring the wet film thickness on line.
7. The wind power spindle coating process of the wheel gauge for coating according to claim 6, wherein the wind power spindle coating process is characterized in that: the wind power main shaft is arranged on an electric roller frame, a spraying manipulator is arranged on one side of the wind power main shaft, the wheel gauge is arranged on the other side of the wind power main shaft, and the wheel gauge is arranged on a moving mechanism through a clamping handle; the electric roller frame, the spraying manipulator, the moving mechanism and the voltage signal output end of the wheel gauge are connected with the controller, the electric roller frame is controlled by the controller to enable the wind power main shaft to rotate, the spraying manipulator is controlled by the controller to spray epoxy zinc-rich primer or inorganic zinc-rich primer on the wind power main shaft, the wheel gauge is controlled by the controller to enable the moving mechanism to be in contact with the wind power main shaft to measure wet film thickness, and coating is stopped when the wet film thickness reaches a set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424898.9A CN107192327B (en) | 2017-06-05 | 2017-06-05 | Wheel gauge for coating and high-corrosion-resistance coating process for wind power main shaft adopting wheel gauge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710424898.9A CN107192327B (en) | 2017-06-05 | 2017-06-05 | Wheel gauge for coating and high-corrosion-resistance coating process for wind power main shaft adopting wheel gauge |
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| CN107192327A CN107192327A (en) | 2017-09-22 |
| CN107192327B true CN107192327B (en) | 2023-05-30 |
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| CN107994707A (en) * | 2017-12-14 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of ocean platform box lightweight generators of 25MW |
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| JP5119860B2 (en) * | 2007-10-31 | 2013-01-16 | 大日本印刷株式会社 | Method and apparatus for measuring wet film thickness |
| CN101670653A (en) * | 2009-08-04 | 2010-03-17 | 东莞市雄林塑胶有限公司 | Method for producing TPU low-permeation waterproof humidity-permeant film and equipment thereof |
| CN204115622U (en) * | 2014-08-26 | 2015-01-21 | 常州澳弘电子有限公司 | Ink thickness detecting instrument |
| CN205300451U (en) * | 2015-10-28 | 2016-06-08 | 中国石油天然气集团公司 | Coating thickness of wet film testing arrangement |
| CN206930261U (en) * | 2017-06-05 | 2018-01-26 | 江阴振宏重型锻造有限公司 | A kind of application is advised with wheel |
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