JPH09184796A - Wear characteristics estimation equipment of slide material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To observe wear progress state during sliding, by installing a thin static side plate material to be tested which constitutes an opposite surface of thickness capable of measuring temperature distribution to the heat generation on a sliding surface, material to be tested on the movable side, a transparent plate material stuck on the opposite surface of the plate material to be tested, and a means which measures the temperature distribution, penetrating the transparent plate material. SOLUTION: The abutting surface between a movable side material 1-1 to be tested and a static side material 2-1 to be tested of a thin plate becomes a sliding surface. A transparent plate material 3-1 made of glass is formed on the upper surface of the material 2-1. When the material 1-1 to be tested is rotated, the heat generated by friction of a D part is guided to the upper surface of the material 2-1 by the effect of thermal conduction. The state of heat generation is detected by an infrared heat image equipment 6, through a small diameter observation hole 5-1 formed in a ceiling plate 4. The material 1-1 to be tested is fixed to a holder 7 and rotated to the material 2-1, at a specific number of revolution, by a motor via a pulley 8 and a belt 9, so that a specific sliding speed is imparted. A cylinder rod 10 pushes the material 1-1 in the arrow C direction, and applies a load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for evaluating wear characteristics of sliding materials.

[0002]

2. Description of the Related Art As a conventional general friction / wear tester used for evaluating the wear property of sliding materials, the one shown in the perspective view of FIG. 4 is known. The sliding surface of the machine is composed of a sample 20 and a sample disk 30,
The sample disk 30 is rotated by a motor (not shown) via a rotation transmission pulley 40 with respect to the sample. Here, the pneumatic cylinder 50 applies a pressing force for applying a compressive load to the sample 20 with respect to the sample disk 30 via a shaft that penetrates the rotating shaft. In this type of device, in terms of evaluation of sliding materials, the friction torque during operation and the amount of wear after operation for a certain time
The fact is that they are compared relative to each other.

[0003]

However, in the conventional friction / wear test machine, although the rotation speed and the load can be applied, if the sliding surface of the test machine is directly observed from the outside of the test machine, Due to structural restrictions and lack of appropriate observation means and methods, the sliding surface cannot be observed during the sliding test, and the sliding material is evaluated based on the friction torque or the amount of wear after a certain period of operation. Has been done. In addition, in order to observe the sliding surface, there is no means other than observing the sliding surface after the test device has been temporarily stopped. You can't. The temperature of the sliding surface during operation becomes extremely high locally,
It is known that they adhere or wear due to a decrease in shearing force. Especially, since the plastic material and the like are thermally weak, this local temperature greatly affects the wear characteristics. The apparatus for evaluating characteristics of sliding materials according to the present invention evaluates the characteristics of the sliding material based on the local temperature generation state and its progress (stabilization). This is achieved by observing and measuring the time-dependent change in the temperature.

The present invention has been proposed in view of such circumstances, and detects the progress of local temperature generation and fluctuation with time, and shows the progress of wear of a test material during sliding in real time. It is an object of the present invention to provide an apparatus for evaluating wear characteristics of high-performance sliding materials that can be observed.

[0005]

In order to achieve such an object, the invention of claim 1 comprises a pair of flat plates and flat plates, flat plates and circular plates, or flat plates and circular rings, which face each other in parallel. Both test materials are brought into contact with each other to form a relative sliding surface,
In a sliding material abradability evaluation device of a type in which one member constituting this sliding surface is pressed against the other test material with a predetermined load and reciprocated at a desired rotation speed or at a desired speed, One of the stationary test materials,
The relatively thin test plate material that constitutes the opposite surface of the thickness that enables temperature distribution measurement without time delay with respect to the heat generation on the sliding surface, the other movable test material, and the test plate material. It is characterized by comprising a transparent plate material attached to the opposite surface, and a means for measuring the temperature distribution on the opposite surface of the plate material to be inspected through the transparent plate material.

According to a second aspect of the present invention, in the first aspect, one of the relatively thin test plate materials is a movable test material, and the other test material is a stationary test material. To do.

According to a third aspect of the present invention, in the first or second aspect, a through hole for measuring the temperature distribution of the sliding surface formed in the support plate that supports the transparent plate member and the through hole are used to measure the temperature distribution. And an infrared thermal imaging device for imaging the temperature distribution of the sliding surface.

According to a fourth aspect of the present invention, in the first aspect, the stationary plate member on the stationary side and the horizontal stationary member made of the transparent plate member are horizontally supported in an upside down posture, and the plate member on the upper surface is supported. The movable test material according to claim 1 is mounted on the upper surface of the transparent plate material, and an infrared thermal imaging device is installed below the transparent plate material to penetrate the transparent plate material and slide the test plate material on the stationary side. It is characterized in that the temperature distribution of the surface is picked up by an infrared thermal imaging device.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. FIG. 1, FIG. 2 and FIG. 3 are vertical sectional views showing a first embodiment, a second embodiment and a third embodiment, respectively. .

First, in the first embodiment of FIG. 1, the sliding surface is indicated by the plane AA. That is, the movable test material 1
-1 and the stationary side test material 2-1 forming a horizontal thin plate material are sliding surfaces. A glass transparent plate 3-1 is attached to the upper surface of the stationary-side test material 2-1. When the movable-side test material 1-1 is rotated by rotating the holder 7 around the center line BB, The heat generated by the friction of the portion D is transmitted to the upper surface of the stationary-side test material 2-1 by heat conduction. The state of heat generation in this portion is detected by the infrared thermal imaging device 6 through the small-diameter observation hole 5-1 formed in the top plate (support plate) 4 which is a support plate. Here, the movable-side test material 1-1 is attached to a holder 7, and the holder 7 is a pulley 8
And, a predetermined sliding speed is given to the sliding surface AA by rotating the stationary side test material 2-1 at a predetermined rotation speed by a motor (not shown) via the belt 9. At that time, a cylinder rod 10 of a vertical type hydraulic cylinder is attached to the lower portion of the holder 7, and the cylinder rod 10 allows the holder 7, that is, the movable-side test material 1 to be inspected.
-1 is pressed against the stationary side test material 2-1 in the direction of arrow C, whereby a predetermined pressing load is applied to the sliding surface A.
I am giving it to A.

In such a device, the stationary-side test material 2-1 having a sliding surface on the lower surface is used by the infrared thermal imaging device 6 from the upper surface of the sliding surface to generate heat on the sliding surface. On the other hand, it is a relatively thin plate material that can measure the temperature distribution on the sliding surface with no time delay. Further, a transparent plate material (for example, glass, acrylic resin, or plastic) 3-1 is attached to the upper surface, which is the surface opposite to the sliding surface of the stationary-side test material 2-1, by means such as adhesion, vapor deposition, or suction. Has been. A predetermined pressing force is applied to one of the two materials to be inspected constituting the sliding surface by the load mechanism, and at the same time, a predetermined rotary motion or reciprocal motion is applied by the drive mechanism. At that time, when heat accompanying friction is generated on the sliding surfaces of both test materials, on the plane on which the above-mentioned transparent plate material is attached, the surface opposite to the friction surface, that is, the attachment of the transparent plate material is applied. This heat is transmitted to the wearing surface. The temperature distribution on this sticking surface is determined by the transparent plate material 3-1 such as a glass plate material.
Can be observed by the infrared thermal imager 6 via
This makes it possible to observe the temperature distribution on the sliding surface.
In addition to this, the thickness of the stationary side test material to which the transparent plate material is adhered among the planes constituting the sliding surface is Since it is a relatively thin plate with a thickness that allows temperature distribution measurement, the temperature distribution due to friction on the sliding surface can be observed in real time by the infrared thermal imaging device 6. As a result, it is possible to observe the time change of the temperature distribution of the sliding surface during the sliding test and to observe the progress of wear in situ. In the figure, 101 is a thrust bearing that receives a thrust load from a cylinder (not shown), and 102 is a holder 7.
Are radial bearings that receive a radial load received from the belt 9, respectively. As described above, in the first embodiment, the stationary side thin plate test material is supported on the upper surface of the lower horizontal disk-shaped movable side test material. The temperature distribution is observed and recorded through an observation hole penetrating a top plate supporting the thin plate test material. In the first embodiment, it is possible to implement a modification in which the thin plate test material is a movable test material and the stationary test material is arranged on the upper surface of the movable test material.

Next, FIG. 2 shows a second embodiment. In the first embodiment, the observation hole 5-2 is formed as a large diameter hole which is larger than that of the first embodiment and is provided on the center line. However, this is an example in which the temperature distribution of the entire sliding surface can be measured.
By making the large-diameter observation hole 5-2 large so that the temperature distribution of the entire sliding surface can be measured, it is possible to clarify the heat generation point, that is, the contact point on the sliding surface AA.

Furthermore, FIG. 3 shows a third embodiment in which the present invention is applied to a reciprocating friction / wear test apparatus. In the figure, the movable-side test material 1-3 reciprocates on the stationary-side test material 2-3 by the hydraulic cylinder 201. Movable side test material 1-
A pressing load is applied to 3 by a lever having a force point of the weight 202 as 205, a fulcrum 204 as a fulcrum, and a pressing jig 203 as an action point. A glass transparent plate 3-3 is attached to the lower surface of the stationary-side test material 2-3, and the infrared thermal imaging device 6 measures the heat generation state of the sliding surface in real time.

[0014]

As is apparent from the above embodiments and modifications, the present invention can be expected to provide the following effects which cannot be achieved by the conventional friction / wear test apparatus. (1) The process of the sliding surface becoming accustomed by repeated sliding causes a heat generation phenomenon due to friction (if it becomes accustomed, the temperature distribution on the sliding surface becomes a constant value and uniform, otherwise The distribution is non-uniform and the temperature also shows a high value), which enables real-time observation, and allows the performance evaluation of the sliding material when developing the sliding material. (2) The presence or absence of oil shortage on the sliding surface can be evaluated by observing the friction heat generated due to oil shortage.

In short, according to the first aspect of the present invention, a pair of flat plates and flat plates, flat plates and circular plates, or flat plates and circular rings, which are parallel to each other, are brought into contact with each other to be relatively slid. A sliding material that forms a moving surface, presses one member that constitutes this sliding surface against the other test material with a predetermined load, and rotates at a desired rotation speed or reciprocates at a desired speed. In the wearability evaluation device, a relatively thin plate material to be tested, which is one stationary side material and constitutes the opposite surface of the thickness that enables temperature distribution measurement without time delay with respect to heat generation on the sliding surface. And the other movable side test material, and a transparent plate material adhered to the opposite surface of the test plate material,
By including means for measuring the temperature distribution on the opposite surface of the test plate material through the transparent plate material, it detects the temporal progress of generation and fluctuation of local temperature, and slides the test material. INDUSTRIAL APPLICABILITY The present invention is extremely useful industrially because a high-performance sliding material wear characteristic evaluation device capable of observing the progress of wear during operation in real time is obtained. The invention of claim 1 is an extraction of the undercurrent idea of the first embodiment shown in FIG. 1 as a superordinate concept.

According to a second aspect of the present invention, in the first aspect, one of the relatively thin test plate materials is a movable test material, and the other test material is a stationary test material. , A high-performance sliding material wear characteristic evaluation device capable of detecting the progress of local temperature generation and fluctuation over time and observing the progress of wear during sliding of a test material in real time Therefore, the present invention is extremely useful in industry. The present invention extracts the underflow idea from the modification of claim 1.

According to a third aspect of the present invention, in the first or second aspect, there is a through hole which is formed in the support plate which supports the transparent plate member and which measures the temperature distribution of the sliding surface, and the through hole. Through the use of an infrared thermal imager that captures the temperature distribution of the sliding surface through the device, it detects the temporal progress of local temperature generation and fluctuation, and the progress of wear of the test material during sliding. The present invention is extremely useful industrially because a wear characteristic evaluation device for a high performance sliding material capable of observing in real time is obtained. The invention of claim 3 is obtained by extracting the undercurrent idea from the first embodiment shown in FIG. 1 and the second embodiment shown in FIG.

According to a fourth aspect of the present invention, in the first aspect, the stationary plate member to be inspected and the horizontal stationary member made of the transparent plate member are horizontally supported in an upside down posture, and the upper surface is covered. The movable-side test material according to claim 1 is placed on the upper surface of the inspection plate material, and an infrared thermal imager is installed below the transparent plate material so that the transparent plate material is transmitted therethrough and the stationary-side test material By capturing the temperature distribution on the sliding surface with an infrared thermal imager, the progress of local temperature generation and fluctuations can be detected, and the progress of wear of the test material during sliding can be monitored in real time. The present invention is extremely useful industrially, since a high-performance sliding material wear characteristic evaluation apparatus that can be observed by the method described above is obtained. The invention of claim 4 is obtained by extracting the undercurrent idea from the third embodiment shown in FIG.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a main part of a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a main part of a second embodiment of the present invention.

FIG. 3 is a vertical sectional view showing a main part of a third embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional friction / wear tester.

[Explanation of symbols]

 1-1 Movable-side test material 1-2 Movable-side test material 1-3 Movable-side test material 2-1 Stationary-side test material 2-2 Stationary-side test material 2-3 Stationary-side test material 3- 1 Transparent Plate Material 3-2 Transparent Plate Material 3-3 Transparent Plate Material 4 Top Plate (Support Plate) 5-1 Observation Hole 5-2 Observation Hole 6 Infrared Thermal Imager 7 Holder 8 Pulley (Drive Mechanism) 9 Belt (Drive Mechanism) 10 Cylinder rod (load mechanism) 101 Thrust bearing 102 Radial bearing 201 Hydraulic cylinder 202 Weight 203 Pressing jig 204 Support point 205 Force point

Claims (4)

[Claims] 1. A relative sliding surface is formed by abutting a pair of flat plates and flat plates, flat plates and circular plates, or flat plates and circular rings that are in parallel with each other, respectively, to make relative sliding surfaces. In the sliding material wear resistance evaluation device of the type in which one member constituting the moving surface is pressed against the other test material with a predetermined load and is rotated at a desired rotation speed or reciprocated at a desired speed, A relatively thin plate material to be inspected on the stationary side, which constitutes an opposite surface of the thickness that enables temperature distribution measurement without time delay with respect to heat generation on the sliding surface, and the movable side of the other side. A test material, a transparent plate material adhered to the opposite surface of the test plate material, and means for measuring the temperature distribution on the opposite surface of the test plate material through the transparent plate material. A characteristic evaluation device for wear characteristics of sliding materials. 2. The sliding material according to claim 1, wherein one of the relatively thin test plate materials is a movable test material, and the other test material is a stationary test material. Wear characteristic evaluation device. 3. The through hole according to claim 1 or 2, which is provided in the support plate for supporting the transparent plate material, for measuring the temperature distribution of the sliding surface, and the temperature of the sliding surface through the through hole. An abrasion property evaluation device for a sliding material, comprising: an infrared thermal imaging device for imaging the distribution. 4. The flat plate according to claim 1, wherein the stationary plate member on the stationary side and the horizontal stationary member made of the transparent plate member are horizontally supported in an upside down posture, and the plate member is mounted on the upper surface of the plate member to be tested. In addition to placing the movable side test material of No. 1 above, an infrared thermal imager is installed below the transparent plate material to transmit the transparent plate material to the temperature distribution of the sliding surface of the stationary side test plate material. An apparatus for evaluating wear characteristics of a sliding material, characterized by being imaged by an infrared thermal imager.