KR101710332B1 - Apparatus for testing of steel plate surface friction - Google Patents

Apparatus for testing of steel plate surface friction Download PDF

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Publication number
KR101710332B1
KR101710332B1 KR1020150173859A KR20150173859A KR101710332B1 KR 101710332 B1 KR101710332 B1 KR 101710332B1 KR 1020150173859 A KR1020150173859 A KR 1020150173859A KR 20150173859 A KR20150173859 A KR 20150173859A KR 101710332 B1 KR101710332 B1 KR 101710332B1
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KR
South Korea
Prior art keywords
friction
guide
main body
plate
assembly
Prior art date
Application number
KR1020150173859A
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Korean (ko)
Inventor
김진영
한상빈
Original Assignee
주식회사 포스코
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Priority to KR1020150173859A priority Critical patent/KR101710332B1/en
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Publication of KR101710332B1 publication Critical patent/KR101710332B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/06—Investigating by removing material, e.g. spark-testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals

Abstract

The present invention relates to a device for testing surface friction of a steel plate, which is to easily perform a test by performing a steel plate surface friction assessment using a friction tip and, on the one hand, grinding the friction tip. According to an embodiment of the present invention, the device for testing surface friction of a steel plate comprises: a main body; a friction unit installed in the upper part of the main body and having an assembly unit having the friction tip at an end, wherein the assembly unit is installed at the lower end which can ascend and descend in the friction unit to rotate; a sample fixing unit installed in the lower part of the main body to ascend and descend and enabling a sample fixed to the upper surface to horizontally reciprocate; and a grinding unit installed on one side of the main body and having a grinding member grinding the surface of the friction tip on the front side to rotate. The friction unit includes: comprises: an upper assembly guide installed in the upper part of the main body; a rotation plate accommodated on the inner side of the upper assembly guide to rotate and having a path inside, wherein the rotation plate has an outer gear unit on the circumference; a cover covering the upper part of the upper assembly guide; a rotation motor installed outside the cover and assembled with a motor gear rotating by being engaged with the outer gear unit of the rotation plate by a shaft; a vertical cylinder installed outside the cover and having a pushing plate at the end of a piston rod ascending and descending a path by passing through the cover; a cylinder installed in the lower part of the upper assembly guide to be connected to the inside of the path; a coil spring installed in the cylinder; a transfer guide wherein the lower part is exposed to the outside of the cylinder as the transfer guide is inserted and assembled to the inner side of the coil spring; and an assembly unit installed at the end of the transfer guide to rotate.

Description

[0001] APPARATUS FOR TESTING OF STEEL PLATE SURFACE FRICTION [0002]

The present invention relates to a steel plate surface friction evaluation apparatus. More particularly, the present invention relates to a steel sheet surface friction evaluation apparatus for testing a steel sheet for comparing a degree of blackening of a friction surface through a phenomenon in which an object gradually shakes off due to mechanical motion on the surface of the steel sheet.

The steel sheet surface friction evaluating device is a test for comparing the degree of blackening, which is a phenomenon of turbidity or gloss failure on the surface of a steel sheet, by applying tribology which is a technique related to friction and abrasion relating to a contact surface for performing relative motion. . In other words, the test data is obtained by rubbing the friction tip, which is one of the friction members, on the surface of the steel plate through the relative movement. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an enlarged view of a main part of a steel sheet surface friction coefficient evaluating apparatus according to the prior art. FIG. 1 is a perspective view of a steel plate surface frictional coefficient evaluating apparatus according to the related art, including a base frame 12 vertically installed on the bottom of a main body 11, A horizontal cylinder 14 connected to one side of the fixing plate 13 and a fixing plate 13 mounted on the upper side of the main body 11, And the vertical cylinder 15 having the friction tip 2 at the lower end thereof constitutes the steel plate surface friction evaluating apparatus 10. As shown in Fig.

Therefore, the test piece 1 is fixed on the upper surface of the fixed plate 13, and the friction tip 2 is coupled to the lower end of the vertical cylinder 15, and then the vertical cylinder 15 is lowered, The test piece 1 is driven by moving the horizontal cylinder 14 connected to the fixing plate 13 in a state of being in contact with the surface of the test piece 1 by relatively moving the friction piece 2 and the test piece 1, And a surface friction evaluation test is being conducted on the surface.

Here, the friction tip (2) is an important factor in the progress of the surface friction evaluation. In order to correct the smoothness or the like, the friction tip (2) is usually used after polishing the surface of the steel cylinder .

However, since the steel plate surface friction evaluating apparatus 10 according to the prior art has no polishing function, it is manually operated to manually grasp the friction tip 2 while contacting with the sandpaper, In the course of polishing the surface, a curved surface is formed, which affects the test result, which causes the accuracy of the test data to deteriorate.

KR 2013-0030894 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a steel plate surface friction evaluation device capable of easily testing a steel plate surface while performing a friction evaluation on the steel strip surface while allowing the friction tip to be polished.

In order to achieve the above object,

A steel plate surface friction evaluating apparatus according to an embodiment of the present invention includes: a body; A frictional portion provided at an upper portion of the main body and having an assembling portion to which a friction tip is attached at an end thereof, A specimen fixing unit installed on the lower portion of the main body so as to be able to move up and down, And a polishing unit installed on one side of the main body and having an abrasive member rotatable forwardly, the abrasive member polishing the surface of the abrasive tip, wherein the friction unit comprises an upper assembly guide provided on an upper portion of the main body; A rotary plate accommodated inside the upper assembly guide so as to be rotatable, having a passage formed therein, and having an outer gear portion formed around the passage; A cover installed to cover an upper portion of the upper assembly guide; A rotation motor installed outside the cover and having a shaft engaged with a motor gear engaged with an outer gear of the rotary plate; A vertical cylinder provided outside the lid and provided with a pressing plate at a distal end of the piston rod passing through the lid and moving up and down the passage; A cylindrical body provided at a lower portion of the upper assembly guide so as to communicate with the passage; A coil spring incorporated in the cylindrical body; A transfer guide inserted and assembled into the coil spring and having a lower portion exposed to the outside of the cylindrical body; And an assembling part rotatably provided at a distal end of the conveying guide.

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Further, in the steel plate surface friction evaluation apparatus according to an embodiment of the present invention, the friction portion may be rotatably arranged on the upper portion of the main body.

Further, in the steel plate surface friction evaluating apparatus according to an embodiment of the present invention, the roughness surface roughness measuring apparatus may further include: an illuminance measuring unit disposed at a lower portion of the rubbing portion to measure the roughness of the rubbing tip;

As shown in FIG.

Further, in the steel plate surface friction evaluating apparatus according to an embodiment of the present invention, the illuminance measuring instrument may include a transfer cylinder installed to be able to move forward and backward; And

A lower assembling guide provided on the lower portion of the main body,

As shown in FIG.

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Further, in the steel plate surface friction evaluation apparatus according to an embodiment of the present invention, the assembly unit may include: a first shaft rotatably pinned to a lower portion of the conveyance guide;

A rotating cylinder having an upper end coupled to the transport guide and a distal end of the piston rod pinned to the first shaft to rotate the first shaft;

A connector provided at an end of the first shaft; And

A rotor rotatably mounted at an end of the connector and having a friction tip mounted at an end thereof;

.

Further, in the steel plate surface friction evaluation apparatus according to an embodiment of the present invention, the specimen fixing unit may include: a second shaft rotatably provided at a lower portion of the body;

A connecting cross bar staggeredly provided in multiple stages on the second shaft;

An assembly installed at one end of the connecting cross bar, the lower part being open and having a fixing plate incorporated therein;

A magnetic body embedded in the fixed plate to fix the specimen;

A horizontal cylinder connected to one side of the fixing plate and housed inside the assembly;

A vertical guide mounted on the assembly such that an upper surface thereof is in close contact with a lower edge of the fixing plate,

A lower plate attached to a lower portion of the main body, and a lower plate attached to the upper plate;

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Further, in the steel plate surface friction evaluation apparatus according to an embodiment of the present invention, the polishing unit may include: a fixed body fixed to one side of the body;

A driving unit rotatably installed in the fixed body; And

A roller provided with a polishing member parallel to the driving unit and rotating in association with the driving unit through rotation of the polishing member;

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These solutions will become more apparent from the following detailed description of the invention based on the attached drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor should appropriately define the concept of the term in order to describe its invention in the best way possible It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

According to one embodiment of the present invention, since continuous steel surface friction evaluation test is possible, shortening of the test time is easy, and automation of the polishing of the friction tip is facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an enlarged view showing a main part of a steel plate surface friction evaluation apparatus according to the prior art; Fig.
2 is a sectional view of the steel sheet surface friction evaluation apparatus according to the present invention as a whole.
3 to 6 are enlarged views showing essential parts of a steel plate surface friction evaluation apparatus according to the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Although not defined differently, all terms including technical terms and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

The steel plate surface friction evaluating apparatus according to an embodiment of the present invention imparts its own polishing function to allow the friction tip subjected to the steel plate surface friction evaluation test to be polished and reused. Further, at least two friction tips are provided, and while rotating, the steel plate surface friction evaluation test is conducted with one friction tip, and the other friction tip is polished. It is also possible to carry out a continuous steel surface friction evaluation test by allowing a plurality of specimens to be evaluated to be mounted. Here, the friction tip is used to measure the roughness frequently by using the roughness meter to determine the wear time.

Therefore, according to the steel plate surface friction evaluating apparatus according to an embodiment of the present invention, it is possible to shorten the replacement time of the friction tip and the test piece, and obtain accurate test data.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 to 3, the steel plate surface friction evaluating apparatus 10 according to an embodiment of the present invention includes at least two friction parts 20 on the upper side of the main body 11, Will be installed and operated. The friction parts 20 are arranged horizontally in the main body 11 so that they can be used alternately through rotations, and the lower ends of the friction parts 20 can be raised and lowered, and the assembling parts 30 are rotatably provided at the lower ends . A friction tip (2) is mounted at the end of the assembly (30).

That is, the friction part 20 is installed on the upper part of the main body 11 and the upper assembling guide 21 is installed on the lower part of the upper assembling guide 21, So that rotation is performed by the rotation of the rotation plate 22. At this time, the rotary plate 22 has a passage 22a formed therein, an outer gear portion 22b formed around the rotary plate 22, and a lower surface thereof being brought into close contact with the bearing 21a built in the upper assembly guide 21, .

The upper assembly guide 21 is provided with a lid 23 at an upper portion thereof so as to cover a rotary plate 22 provided inside and a rotary motor 24 is installed outside the lid 23. The rotation motor 24 rotates the rotation plate 22 when the rotation motor 24 is driven by a motor gear 24a that rotates in engagement with the outer gear portion 22b of the rotation plate 22. [

The lid 23 is provided with a vertical cylinder 25 on the outside and is attached to the end of the piston rod 25a of the vertical cylinder 25 which passes through the lid 23 and ascends and descends the passage 22a, 25b. A cylindrical body 26 is inserted into the lower part of the upper assembly guide 21 so as to communicate with the passage 22a from the upper direction and a coil spring 27 is installed inside the cylindrical body 26 A conveying guide 28 is inserted and assembled in the coil spring 27 from the upper direction to be raised and lowered by the press plate 25b when the vertical cylinder 25 is operated.

The lower part of the conveyance guide 28 is exposed to the outside of the cylindrical body 26 to form the lower end of the friction part 20. The pressing action of the vertical cylinder 25 and the elastic action of the coil spring 27 As shown in FIG. The transport guide 28 is provided with an assembling portion 30 at its end.

As shown in FIGS. 3 to 4, the assembly unit 30 includes a first shaft 31 pivotally coupled to a distal end of the conveying guide 28. The end of the piston rod 32a drawn out from the pivoting cylinder 32 is fastened to the first shaft 31 by a pin so that the piston rod 32a is pivoted When the cylinder 32 is driven, the first shaft 31 is rotated in one direction.

The first shaft 31 is provided with a connector 33 at its distal end. A rotor 34 is rotatably assembled to the distal end of the connector 33 and a friction tip 2 is mounted at the distal end of the rotor 34. At this time, the rotor 34 is formed with a rotation protrusion 34a at its upper portion so that the rotation protrusion 34a is coupled to the connector 33 to be rotated, and the upper gear portion 34b formed on the upper portion is rotated And is rotated by the rotation of the motor (M) by connecting the gear (G). That is, after the motor M is fixed to the outside of the connector 33, the spur gear G is rotated to connect the spur gear G to the upper gear portion 34b.

The frictional tip 2 is formed in an inverted triangular protrusion on the upper portion thereof and coupled to the rotor 34 so as not to be separated during the steel friction test. The specimen 1 rubbed through the relative movement with the friction tip 2 is mounted on the upper surface of the specimen holder 40 provided on the lower portion of the main body 11 so as to correspond to the center of the rubbing portion 20 And is reciprocally moved left and right.

2 and 5 to 6, the specimen holder 40 is rotatably provided at the lower portion of the main body 11 with a second shaft 41 rotated through a normal motor M, At least two connecting crossbars 42a and 42b are staggeredly installed in the shaft 41 in a staggered manner. An assembly 43 having a lower portion opened at one end of the connecting crossbar 42a and 42b is installed and a fixing plate 43a is installed inside the assembly 43. [ The fixed plate 43a has a magnetic body 44 for fixing the test piece 1 through a magnetic force.

The fixing plate 43a is connected to one side of the horizontal cylinder 45 accommodated in the assembly 43. A buffer spring 46a is mounted on the assembly 43 and is closely attached to the upper edge of the vertical guide 46 which is lifted and lowered along the vertical guide 46. Therefore, the fixing plate 43a is accommodated in the assembly 43 while pressing the vertical guide 46, and is raised and lowered by the plate 47 in the upper direction.

The plate 47 penetrates through the assembly 43 and its upper surface is in close contact with the lower portion of the fixing plate 43a. In the upper surface of the plate 47, five balls 47a are rotatably installed, And is raised and lowered through the lower cylinder 48 installed at the lower portion.

Therefore, according to the embodiment of the present invention, the test piece 1 is lifted and lowered through the lower cylinder 48, the friction tip 2 is lowered through the vertical cylinder 25, 45 to reciprocate the test piece 1 to the left and right to frictionally evaluate the surface friction test of the steel sheet.

On the other hand, the friction tip 2 is polished through the polishing part 50 and reused to correct the flatness and the like after friction with the test piece 1. [

2, the polishing unit 50 is provided on one side of the main body 11 which can be brought into contact with the friction tip 2 during the turning operation of the first shaft 31, And an abrasive member 51 capable of being carried out by sandpaper or the like which can be polished is rotatably provided forward. That is, a fixed body 50a is fixed to one side of the main body 11, and a driving part 50b, which can be implemented by a normal motor, is provided inside the fixed body 50a, A roller 50c is provided.

The roller 50c is provided with an abrading member 51 in parallel with the driving unit 50b and rotates in conjunction with the driving unit 50b through the rotation of the abrading member 51. [ The driving unit 50b and the roller 50c may be provided with a buffer function through a normal spring.

On the other hand, in order to accurately determine the polishing time of the friction tip 2 through the polishing part 50, an illuminance measuring instrument 60 is disposed under the friction part 20 to measure the roughness of the friction tip 2 .

As shown in FIG. 2, the roughness measuring instrument 60 is installed to be able to move forward and backward of the transfer cylinder 61 to easily measure the roughness of the friction tip 2. The transfer cylinder 61 is provided on an upper portion of a lower assembling guide 62 provided at a lower portion of the main body 11.

The roughness measurement using the roughness meter 60 advances the roughness meter 60 to a position where the transfer cylinder 61 can be inspected to inspect the friction tip 2 and the vertical cylinder 25 is driven, (2) is lowered, the roughness measuring device (60) is operated to measure the surface roughness of the friction tip (2), the measured data is stored in the controller and compared with the previously measured data, . The lower assembly guide 62 is installed at a lower portion of the friction portion 20 so that openings 62a and 62b are formed on the upper and the side surfaces, respectively, for easy friction between the test piece 1 and the friction tip 2, .

Hereinafter, a steel sheet surface friction evaluation method using a steel sheet surface friction evaluation apparatus according to an embodiment of the present invention will be described.

First, the specimen 1 processed to a predetermined size is mounted on the upper surface of the fixing plate 43a and fixed by the magnetic body 44. [ The second shaft 41 is rotated so that the test piece 1 corresponds to the center of the friction tip 2 and one of the connecting legs 42a is positioned inside the lower assembling guide 62. [ At this time, the connecting bar 42a is positioned inside through the side opening 62b formed in the lower assembling guide 62, and the other connecting bar 42b is positioned outside. When the lower cylinder 48 is then driven to raise the fixing plate 43a through the plate 47, the fixing plate 43a moves to the upper opening 62a formed in the lower assembly guide 62, The upper part of the test piece 1 fixed to the lower assembly guide 62 is exposed to the outside of the lower assembly guide 62.

When the setting of the test piece 1 is completed, the vertical cylinder 25 on the upper part of the main body 11 is driven to bring the pressing plate 25b downward into contact with the upper part of the conveying guide 28. [ At this time, the conveyance guide 28 and the first shaft 31 are lowered and the friction tip 2 provided on the rotor 34 is lowered to be brought into contact with the upper part of the specimen 1. In the vertical cylinder 25, When the friction tip 2 is strongly contacted with the test piece 1, it is detected by the load measuring device 47b provided on the plate 47 and moved to a desired pressing setting value by the operator. The driving of the cylinder 25 is stopped.

The horizontal cylinder 45 is moved forward and backward by the fixing plate 43a fixing the test piece 1 in the state where the friction piece 2 and the test piece 1 are in contact with each other, So that the specimen 1 rubs through the relative movement with the friction tip 2 while reciprocating. At this time, the fixing plate 43a is easily operated by preventing the gap with the plate 47 by the ball 47a.

When the steel plate surface friction evaluation test is completed, finally, the vertical cylinder 25 is raised and the conveyance guide 28 is raised through the coil spring 27 to separate the friction tip 2 from the test piece 1 , And the lower cylinder 48 which raised the specimen 1 is lowered. Then, the surface roughness of the friction tip 2 is inspected through the roughness measuring instrument 60, and when the friction tip 2 is worn and needs polishing, the rotation motor 24 is driven to rotate the motor gear 24a, The rotation plate 22 engaged with the motor gear 24a rotates to rotate the friction portion 20. [

When the position of the friction portion 20 is changed as described above, the assembling portion 30 is rotated to the right side in the drawing through the rotating cylinder 32 so that the surface of the worn friction portion 2 contacts the abrasive member 51 And in this state, the polishing member 51 is rotated to polish the surface of the friction tip 2.

In this case, the polishing direction of the friction tip 2 can be changed by rotating the rotor 34 connected to the connector 33 in order to prevent uneven wear at the time of polishing the friction tip 2, The surface of the friction tip 2 can be smoothly polished.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: Specimen 2: Friction Tip
10: steel plate surface friction evaluation device 11:
12: base frame 13, 43a: fixed plate
14, 45: Horizontal cylinder 15, 25: Vertical cylinder
20: Friction part 21: Upper assembly guide
21a: Bearing 22: Spindle
22a: passage 22b: outer gear portion
23: lid 24: rotary motor
24a: motor gear 25: vertical cylinder
25a, 32a: piston rod 26: cylindrical body
27: coil spring 28: conveying guide
30: assembly part 31: first shaft
32: Rotating cylinder 33: Connector
34: Rotor 34a: Rotation projection
34b: upper gear portion 40: specimen fixing portion
41: second shaft 42a, 42b: connecting shaft
43: assembly 44: magnetic body
46: vertical guide 46a: buffer spring
47: Plate 47a: Ball
47b: load measuring device 48: lower cylinder
50: polishing section 50a: fixed body
50b: driving part 50c: roller
51: abrasive member 60: illuminance meter
61: Feed cylinder 62: Lower assembly guide
62a: Upper opening 62b: Side opening

Claims (8)

main body;
A frictional portion provided at an upper portion of the main body and having an assembling portion to which a friction tip is attached at an end thereof,
A specimen fixing unit installed on the lower portion of the main body so as to be able to move up and down, And
And a polishing unit installed on one side of the main body and having an abrading member for grinding the surface of the abrading tip rotatably forward,
The friction portion includes an upper assembly guide provided on an upper portion of the body;
A rotary plate accommodated inside the upper assembly guide so as to be rotatable, having a passage formed therein, and having an outer gear portion formed around the passage;
A cover installed to cover an upper portion of the upper assembly guide;
A rotation motor installed outside the cover and having a shaft engaged with a motor gear engaged with an outer gear of the rotary plate;
A vertical cylinder provided outside the lid and provided with a pressing plate at a distal end of the piston rod passing through the lid and moving up and down the passage;
A cylindrical body provided at a lower portion of the upper assembly guide so as to communicate with the passage;
A coil spring incorporated in the cylindrical body;
A transfer guide inserted and assembled into the coil spring and having a lower portion exposed to the outside of the cylindrical body; And
And an assembling part rotatably provided at an end of the conveying guide.
The method according to claim 1,
Wherein the friction portion is rotatably arranged on an upper portion of the main body.
The method according to claim 1 or 2,
An illuminance measuring device disposed at a lower portion of the friction portion to measure a roughness of the friction tip;
Further comprising: a steel plate surface frictional coefficient estimating device
The method of claim 3,
A transfer cylinder installed in the illuminance measuring device so as to be able to move forward and backward; And
A lower assembling guide provided on the lower portion of the main body,
Further comprising: a steel plate surface frictional coefficient estimating device
delete The method according to claim 1,
The assembly includes a first shaft rotatably coupled to a lower portion of the conveyance guide;
A rotating cylinder having an upper end coupled to the transport guide and a distal end of the piston rod pinned to the first shaft to rotate the first shaft;
A connector provided at an end of the first shaft; And
A rotor rotatably mounted at an end of the connector and having a friction tip mounted at an end thereof;
Wherein the steel plate surface friction evaluation device comprises:
The method according to claim 1,
The specimen fixing unit includes: a second shaft rotatably installed at a lower portion of the main body;
A connecting cross bar staggeredly provided in multiple stages on the second shaft;
An assembly installed at one end of the connecting cross bar, the lower part being open and having a fixing plate incorporated therein;
A magnetic body embedded in the fixed plate to fix the specimen;
A horizontal cylinder connected to one side of the fixing plate and housed inside the assembly;
A vertical guide mounted on the assembly such that an upper surface thereof is in close contact with a lower edge of the fixing plate,
A lower plate attached to a lower portion of the main body, and a lower plate attached to the upper plate;
Wherein the steel sheet surface friction evaluation device comprises:
The method according to claim 1,
The polishing unit includes: a fixed body fixed to one side of the body;
A driving unit rotatably installed in the fixed body; And
A roller provided with a polishing member parallel to the driving unit and rotating in association with the driving unit through rotation of the polishing member;
Wherein the steel plate surface friction evaluation device comprises:
KR1020150173859A 2015-12-08 2015-12-08 Apparatus for testing of steel plate surface friction KR101710332B1 (en)

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CN113458942A (en) * 2021-07-08 2021-10-01 徐风堂 Portable welding rod tail grinding device
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KR100710571B1 (en) * 2006-02-07 2007-04-24 엘에스전선 주식회사 Grinding device providing dressing
KR20080051474A (en) * 2006-12-05 2008-06-11 주식회사 포스코 Device for evaluating friction property of material for hot press forming
KR20130030894A (en) 2011-09-20 2013-03-28 대우조선해양 주식회사 Apparatus for measuring wear of surface coated material
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CN108081092A (en) * 2017-11-27 2018-05-29 长沙双合盛企业管理有限公司 A kind of plate derusting device of steel building
KR20190074737A (en) * 2017-12-20 2019-06-28 주식회사 포스코 Apparatus for holding specimen
KR102039088B1 (en) 2017-12-20 2019-10-31 주식회사 포스코 Apparatus for holding specimen
CN109500297A (en) * 2018-11-06 2019-03-22 刘见虎 A kind of bar straightening rust remover
CN113458942A (en) * 2021-07-08 2021-10-01 徐风堂 Portable welding rod tail grinding device
CN116698651A (en) * 2023-07-27 2023-09-05 常州凯得新材料科技有限公司 Plastic film decoloration test detection device
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