High temperature sliding friction performance test device and control system for coated steel plates

Abstract

The present invention discloses a high-temperature sliding friction performance test device and control system for coated steel plates, comprising a frame, and a loading mechanism, a sliding test mechanism and a heating mechanism arranged on the frame; the loading mechanism and the sliding test mechanism are respectively arranged on the two end surfaces inside the frame, and the heating mechanism is arranged at the front end of the loading mechanism. The present invention facilitates the high-temperature friction performance test experiment of coated steel plates.

Description

Technical Field

[0001] The invention relates to a friction performance testing device, and more specifically to a high-temperature sliding friction performance testing device and a control system for a coated steel plate. Background Art

[0002] Coated steel sheets have excellent corrosion resistance and decorative properties and are widely used in light industry, construction, home appliances, automobiles and other fields. Coated steel sheets are used in home appliances, automobile manufacturing and other fields, and most of them require stamping. Due to the friction between the mold and the steel plate, the coating is prone to powdering and blackening during forming, which not only affects the appearance quality, corrosion resistance, and paintability of the formed parts, but also aggravates the wear of the mold and reduces its service life. Due to the long production process of coated steel sheets and the large differences in the processes and equipment of each production line, surface defects are still difficult to avoid. This requires steel mills to systematically study and classify the various defects that occur in the production process, continuously supplement and improve control measures, and improve the quality control level of coated products. In the tribological performance analysis and mechanism research of coated steel plates, it is necessary to conduct flat plate sliding friction experiments to simulate the actual working conditions of the coated steel ladle during the stamping process, and pressurize and heat the steel plate at the same time, and carry out tribological performance tests under such conditions.

[0003] At present, the scratch tester is usually used for the tribological performance test of steel plates. The scratch tester usually uses a probe to scratch the surface to test the tribological performance. However, the scratch tester usually uses point contact, the applied pressure is small, the formation is short, and it is impossible or inconvenient to heat large samples. Therefore, it is not suitable for simulating the actual working conditions of coated steel plates during the stamping process.

[0004] In existing patent applications, such as Chinese patent CN 1789964A, a reciprocating high-temperature and high-load friction and wear test method and equipment are disclosed, with a rated maximum applied load of up to 10,000N; the mass of the motion mechanism is minimized to the greatest extent, the inertia force of the reciprocating motion is reduced, and the system operates smoothly at 800r / min; due to the directional heating and heat preservation of the sample, while the sample obtains a higher temperature, the bottom temperature is lower, especially the rolling bearing support retains sufficient space under the lower sample load floor, and circulating lubricating oil is used to achieve cooling and lubrication at the same time. The invention uses fixed weights and levers for loading, and a heating furnace and oil pump for heating.

[0005] For another example, Chinese patent CN 1724994A discloses a high-temperature sliding wear and thermal contact fatigue material testing machine, which uses a hydraulic mechanism to pressurize a test object and uses an induction heating method to heat the test object.

[0006] The solutions adopted in the above two inventions have relatively complex structures and are not suitable for simulating the actual working conditions of coated steel plates during the stamping process. Summary of the invention

[0007] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a high-temperature sliding friction performance testing device and control system for coated steel plates, so as to facilitate high-temperature friction performance testing experiments of coated steel plates.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] In one aspect, a high temperature sliding friction performance testing device for a coated steel plate comprises a frame, and a loading mechanism, a sliding testing mechanism and a heating mechanism arranged on the frame;

[0010] The loading mechanism and the sliding test mechanism are respectively arranged on the two end surfaces inside the frame, and the heating mechanism is arranged at the front end position of the loading mechanism.

[0011] Preferably, the loading mechanism comprises a loading mechanism base disposed on the inner end surface of the frame, a loading linear guide rail disposed vertically on the loading mechanism base, and a wedge block disposed on the loading linear guide rail, wherein the wedge block moves along the loading linear guide rail;

[0012] An inclined linear guide rail provided on the inclined surface of the wedge block, and a loading block provided on the inclined linear guide rail, wherein the loading block moves along the inclined linear guide rail;

[0013] a force sensor disposed on the loading block;

[0014] A horizontal linear guide rail provided on the inner end surface of the frame, along which the loading block moves;

[0015] A loading servo motor is arranged on the wedge block.

[0016] Preferably, the sliding test mechanism comprises a sliding test base arranged on the inner end surface of the frame, a sliding test linear guide rail arranged on the sliding test base, and a test head mounting plate arranged on the sliding test linear guide rail, wherein the test head mounting plate moves along the sliding test linear guide rail;

[0017] A test head disposed on the test head mounting plate, a test head sensor disposed at the bottom of the test head, and a test head spring disposed between the test head and the test head mounting plate;

[0018] A sliding test servo motor is arranged on the test head mounting plate.

[0019] Preferably, the heating mechanism includes a heating mechanism base disposed on the horizontal linear guide rail and moving along the horizontal linear guide rail, a heating plate disposed on the heating mechanism base, a heating rod and a temperature sensor disposed inside the heating plate, and a sample fixture disposed on the front end surface of the heating plate.

[0020] Preferably, a loading servo motor reducer is connected to the output end of the loading servo motor, and the loading servo motor reducer is connected to the wedge block through a coupling, a loading trapezoidal lead screw, and a trapezoidal lead screw nut.

[0021] Preferably, a sliding test servo motor reducer is connected to the output end of the sliding test servo motor, and the sliding test servo motor reducer is connected to the test head mounting plate through a coupling, a sliding test trapezoidal lead screw, and a trapezoidal lead screw nut.

[0022] Preferably, the test head is arranged on the test head mounting plate via a test head rotating shaft.

[0023] On the other hand, a high-temperature sliding friction performance test control system for coated steel plates includes the high-temperature sliding friction performance test device, a mobile frame for placing the high-temperature sliding friction performance test device, a control cabinet arranged on the mobile frame for controlling the high-temperature sliding friction performance test device, and a touch screen for setting test parameters.

[0024] Preferably, the control cabinet is provided with a servo motor driver for controlling the operation of the loading servo motor and the sliding test servo motor, and a main controller for collecting data of the force sensor and the temperature sensor and controlling the heating rod.

[0025] The high-temperature sliding friction performance test device and control system provided by the present invention for coated steel plates adopts a servo motor and a wedge block mechanism combination for loading, and adopts a multi-stage reduction mechanism, which can generate a large pressurized load, while avoiding the use of a complex hydraulic loading system, and has a simple structure and precise control. Since the test object of the high-temperature sliding friction performance test device and control system of the present invention is a thin steel plate with good thermal conductivity, a contact heating method is adopted, avoiding the use of a heating furnace solution, and facilitating the high-temperature friction performance test experiment of the coated steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a high temperature sliding friction performance testing device of the present invention;

[0027] Figure 2 yes Figure 1 A schematic front view of a medium and high temperature sliding friction performance test device;

[0028] Figure 3It is a structural schematic diagram of a loading mechanism in a high-temperature sliding friction performance testing device of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a sliding test mechanism in a high-temperature sliding friction performance test device of the present invention;

[0030] Figure 5 It is a structural schematic diagram of a heating mechanism in a high-temperature sliding friction performance testing device of the present invention;

[0031] Figure 6 It is a structural schematic diagram of a high-temperature sliding friction performance test control system of the present invention. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Please combine Figure 1 As shown, a high-temperature sliding friction performance testing device for a coated steel plate provided by the present invention comprises a frame 1, and a loading mechanism 2, a sliding testing mechanism 3 and a heating mechanism 4 installed on the frame 1.

[0034] The loading mechanism 2 and the sliding test mechanism 3 are respectively installed on the two end surfaces inside the frame 1, the heating mechanism 4 is installed at the front end position of the loading mechanism 2, and the test sample (coated steel plate) is fixed on the installation surface of the heating mechanism 4. The loading mechanism 2 and the sliding test mechanism 3 are driven by AC servo motors to realize the horizontal movement of the test sample and the vertical movement of the test head 305 respectively. During the test, the test sample and the test head 305 maintain contact, the loading pressure of the contact part is controlled by the loading mechanism 2, the heating mechanism 4 controls the temperature of the test sample, and the sliding test mechanism 3 controls the sliding stroke and speed of the test head 305, so as to realize the automatic high-temperature sliding friction test process of the test sample.

[0035] Please combine Figure 2 , Figure 3 As shown, the loading mechanism 2 includes a loading mechanism base 201 installed on the inner end surface of the frame 1, a loading linear guide rail 202 installed on the loading mechanism base 201 and arranged to be vertical, and a wedge block 203 installed on the loading linear guide rail 202. The wedge block 203 can move vertically along the loading linear guide rail 202.

[0036] An inclined linear guide 204 is installed on the inclined surface of the wedge block 203, and a loading block 205 is installed on the inclined linear guide 204. The inclined linear guide 204 can make inclined motion along the wedge block 203. A force sensor 206 is installed on the end face of the loading block 205, and the force sensor 206 is in contact with the heating mechanism base 401.

[0037] A horizontal linear guide rail 207 is also installed on the inner end surface of the frame 1 , and the loading block 205 is also installed on the horizontal linear guide rail 207 . The loading block 205 can also move horizontally along the horizontal linear guide rail 207 .

[0038] While the loading block 205 moves horizontally along the horizontal linear guide rail 207, it also moves obliquely along the wedge block 203 through the inclined linear guide rail 204, so that the loading block 205 and the force sensor 206 push the heating mechanism 4 to move horizontally.

[0039] The output end of the loading servo motor 208 is connected to a loading servo motor reducer 209. The loading servo motor reducer 209 pushes the wedge block 203 to move in the vertical direction along the loading linear guide 202 through the coupling 210, the loading trapezoidal screw 211, and the trapezoidal screw nut 212. The wedge block 203 then pushes the loading block 205 to move in the horizontal direction along the horizontal linear guide 207 through the combined action of the inclined linear guide 205 and the horizontal linear guide 207.

[0040] Please combine Figure 2 , Figure 4 As shown, the sliding test mechanism 3 includes a sliding test base 301 installed on the inner end surface of the frame 1, a sliding test linear guide 302 is installed on the sliding test base 301, a test head mounting plate 303 is installed on the sliding test linear guide 302, and the test head mounting plate 303 can move vertically along the sliding test linear guide 302.

[0041] A test head 305 is mounted on the test head mounting plate 303 via a test head shaft 304. The test head shaft 304 is vertically mounted on the test head mounting plate 303. The test head 305 can rotate around the test head shaft 304. A test head sensor 306 is mounted at the bottom of the test head 305. A test head spring 307 is installed between the test head 305 and the test head mounting plate 303.

[0042] The output end of the sliding test servo motor 308 is connected to a sliding test servo motor reducer 309 , and the sliding test servo motor reducer 309 pushes the test head mounting plate 303 to move vertically along the sliding test linear guide 302 through a coupling 310 , a sliding test trapezoidal screw, and a trapezoidal screw nut.

[0043] During the loading process, the test head 305 can rotate around the test head shaft 304 to ensure that the test head 305 is in full contact with the test sample during the test process. After unloading, the test head spring 307 can keep the test head 305 in the middle, which is convenient for installing and removing the test sample. The test head sensor 306 can measure the position of the test head 305.

[0044] Please combine Figure 2 , Figure 5As shown, the heating mechanism 4 includes a heating mechanism base 401 installed on the horizontal linear guide rail 207 and moving horizontally along the horizontal linear guide rail 207, a heating plate 402 is installed on the heating mechanism base 401, a plurality of heating rods 403 and a temperature sensor 404 are installed inside the heating plate 402, and a sample fixture 405 is installed on the front end surface of the heating plate 402.

[0045] The test sample is fixed on the front end surface of the heating plate 402 by the sample fixture 405 , the heating rod 403 can heat the heating plate 402 , and the temperature sensor 404 can measure the temperature of the heating plate 402 .

[0046] During the test, the loading block 205 of the loading mechanism 2 moves horizontally along the horizontal linear guide 207, and also moves obliquely along the wedge block 203 through the inclined linear guide 204, so that the loading block 205 and the force sensor 206 push the heating mechanism 4 to move horizontally, and the test sample on the heating plate 402 at the front end of the heating mechanism 4 contacts the test head 305 of the sliding test mechanism 3, and its contact pressure is controlled by the loading servo motor 208 and measured by the force sensor 206. The test sample is heated by the heating plate 402 of the heating mechanism 4, and its temperature is controlled by the heating rod 403 and measured by the temperature sensor 404. The test head 305 slides in the vertical direction on the surface of the test sample, and its sliding distance and speed are controlled by the sliding test servo motor 308.

[0047] Please combine Figure 6 As shown, the present invention also provides a high-temperature sliding friction performance test control system for coated steel plates, including a moving frame 5 for placing a high-temperature sliding friction performance test device 100.

[0048] A control cabinet 6 for controlling the high-temperature sliding friction performance testing device 100 and a touch screen 7 for setting test parameters are also installed on the moving frame 5 .

[0049] The control cabinet 6 is equipped with a servo motor driver for controlling the loading servo motor 208 and the sliding test servo motor 308 , as well as a main controller for collecting data from the force sensor 206 and the temperature sensor 404 and controlling the heating rod 403 .

[0050] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A high temperature sliding friction performance testing device for coated steel plates, characterized in that: It comprises a frame, and a loading mechanism, a sliding test mechanism and a heating mechanism arranged on the frame; The loading mechanism and the sliding test mechanism are respectively arranged on the two end surfaces inside the frame, and the heating mechanism is arranged at the front end position of the loading mechanism. The loading mechanism comprises a loading mechanism base disposed on the inner end surface of the frame, a loading linear guide rail disposed perpendicularly on the loading mechanism base, and a wedge block disposed on the loading linear guide rail, wherein the wedge block moves along the loading linear guide rail; An inclined linear guide rail provided on the inclined surface of the wedge block, and a loading block provided on the inclined linear guide rail, wherein the loading block moves along the inclined linear guide rail; a force sensor disposed on the loading block; A horizontal linear guide rail provided on the inner end surface of the frame, along which the loading block moves; A loading servo motor provided on the wedge block, The sliding test mechanism comprises a sliding test base arranged on the inner end surface of the frame, a sliding test linear guide rail arranged on the sliding test base, and a test head mounting plate arranged on the sliding test linear guide rail, wherein the test head mounting plate moves along the sliding test linear guide rail; A test head disposed on the test head mounting plate, a test head sensor disposed at the bottom of the test head, and a test head spring disposed between the test head and the test head mounting plate; a sliding test servo motor disposed on the test head mounting plate, The heating mechanism comprises a heating mechanism base disposed on the horizontal linear guide rail and moving along the horizontal linear guide rail, a heating plate disposed on the heating mechanism base, a heating rod and a temperature sensor disposed inside the heating plate, and a sample fixture disposed on the front end surface of the heating plate. The output end of the loading servo motor is connected to a loading servo motor reducer, and the loading servo motor reducer is connected to the wedge block through a coupling, a loading trapezoidal lead screw, and a trapezoidal lead screw nut. The output end of the sliding test servo motor is connected with a sliding test servo motor reducer, and the sliding test servo motor reducer is connected to the test head mounting plate through a coupling, a sliding test trapezoidal lead screw, and a trapezoidal lead screw nut.

2. The high temperature sliding friction performance testing device for coated steel sheets according to claim 1, characterized in that: The test head is arranged on the test head mounting plate via a test head rotating shaft.

3. A control system for testing the high temperature sliding friction performance of coated steel plates, characterized in that: It comprises a high-temperature sliding friction performance testing device as described in any one of claims 1-2, a mobile frame for placing the high-temperature sliding friction performance testing device, a control cabinet arranged on the mobile frame for controlling the high-temperature sliding friction performance testing device, and a touch screen for setting test parameters.

4. The high temperature sliding friction performance test control system for coated steel sheets according to claim 3, characterized in that: The control cabinet is provided with a servo motor driver for controlling the loading servo motor and the sliding test servo motor, and a main controller for collecting data of the force sensor and the temperature sensor and controlling the heating rod.

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