High and low temperature alternating environment wear simulation experiment machine

Abstract

The utility model provides a high and low temperature alternating environment wear simulation experiment machine which comprises a rack, and a heating mechanism, a wear mechanism, a blowing cooling mechanism and a clamping mechanism which are arranged on the rack, and the heating mechanism comprises an electromagnetic induction heater arranged on the rack; the abrasion mechanism comprises a grinding machine installed on the machine frame and a first driving mechanism connected with the grinding machine to drive the grinding machine to move up and down, the clamping mechanism comprises a clamp installed on the machine frame and a second driving mechanism driving the clamp to move, and the blowing cooling mechanism is installed on the machine frame and used for conducting blowing cooling on grid sections on the clamp. The high and low temperature alternating environment abrasion simulation experiment machine can consider factors such as reciprocating heating and cooling, temperature monitoring, contact load, mechanical abrasion and cyclic experiments, and can reduce actual working conditions of abrasion of quick-wear parts in metallurgical processes such as sintering and pelletizing in a high-precision manner, so that the influence effect of a coating technology on the service life of a grid section is verified.

Description

TECHNICAL FIELD

[0001] The utility model relates to wear detection device technical field especially relates to a high and low temperature alternating environment wear simulation experiment machine. BACKGROUND

[0002] At present, the roasting trolley equipment is mainly applied to the metallurgical process equipment such as iron ore sintering, pellet and plays a key role in the sintering process of steel metallurgy and other industries. The trolley usually works in the high and low temperature periodic alternating environment of 20 ℃~1500 ℃, is repeatedly abraded by material in the service process, and the abrasion condition can be intensified due to the repeated temperature rising service environment, so that the grate bar and other main vulnerable parts of the trolley need to be frequently repaired and replaced. The wear simulation experiment aims at solving the actual problem of the wear of the grate bar and other wear parts of the trolley in the sintering and pellet production process, and through the simulation experiment, technical support can be provided for improving the service life of the grate bar and optimizing the sintering process, so as to improve the metallurgical production efficiency and reduce the cost. The material and processing technology of the grate bar are improved through the simulation experiment, so that it can better adapt to the harsh conditions in the metallurgical sintering process.

[0003] However, the existing wear simulation experiment machine can only simulate a single wear form, such as simple wear or high temperature wear, and cannot consider the comprehensive action of temperature change, contact load, mechanical wear and other factors, which has a large difference with the actual service environment of the trolley grate bar. For example, some experiment machines can only carry out abrasive wear test at room temperature, and cannot simulate the complex situation in the high temperature sintering process. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide a high and low temperature alternating environment wear simulation experiment machine, which can simulate the high temperature environment by heating and improve the diversification of the wear form of the abrasive wear test of the grate bar.

[0005] In order to achieve the above purpose, the utility model provides a high and low temperature alternating environment wear simulation experiment machine, which comprises a rack, a heating mechanism, a wear mechanism, a blowing cooling mechanism and a clamping mechanism installed on the rack, wherein,

[0006] The heating mechanism comprises an electromagnetic induction heater installed on the rack, the wear mechanism comprises a grinding machine installed on the rack and a first driving mechanism connected with the grinding machine to drive the up and down movement thereof, the clamping mechanism comprises a clamp installed on the rack and a second driving mechanism driving the movement of the clamp, and the blowing cooling mechanism is installed on the rack for blowing and cooling the grate bar sample on the clamp.

[0007] Preferably, the high and low temperature alternating environment wear simulation experiment machine further comprises a temperature measuring device installed on the rack.

[0008] Preferably, the clamp comprises a ceramic rod, a connecting rod fixedly connected with the ceramic rod, and a base supporting the connecting rod, the second driving mechanism is connected with the end of the connecting rod to drive the lateral movement of the connecting rod, and the ceramic rod is provided with a threaded hole at the end for inserting the grate bar sample.

[0009] Preferably, the base comprises a supporting plate fixed on the frame, a supporting frame sleeved on the connecting rod, and a connecting plate fixed on the side surface of the supporting frame, the bottom of the connecting plate is elastically connected with the top end surface of the frame through elastic members, and the end of the supporting plate is inserted into the slot on the side surface of the supporting frame, and the up-down movement displacement of the supporting frame is limited by the length of the slot.

[0010] Preferably, the two side surfaces of the supporting frame are provided with the connecting plates, and at least two elastic members are arranged below the connecting plates.

[0011] Preferably, the air blowing cooling mechanism comprises a nozzle, an air compressor, and a metal hose connected between the nozzle and the air compressor.

[0012] Preferably, the heating mechanism is also provided with a cooling device to cool the heating mechanism.

[0013] Preferably, the side surface of the frame is provided with a power distribution cabinet, and the power distribution cabinet is provided with a controller electrically connected with the first driving mechanism, the second driving mechanism, the grinding machine and the electromagnetic induction heater.

[0014] Preferably, the grinding machine is located between the clamp and the electromagnetic induction heater.

[0015] Preferably, the frame is formed by assembling a plurality of aluminum profiles, and the bottom end surface of the frame is provided with a roller.

[0016] The high-low temperature alternating environment wear simulation experiment machine has the following beneficial effects:

[0017] 1. Because the heating mechanism, the wear mechanism, the air blowing cooling mechanism and the clamping mechanism are cooperatively arranged, reciprocating temperature rising and falling, temperature monitoring, contact load, mechanical wear, cycle experiment and other factors can be realized, the actual working condition of the wear of the vulnerable parts in the metallurgical process such as sintering and pelletizing can be restored with high precision, the influence of the coating technology on the service life of the grate bar is verified, and the selection of equipment materials and processing technology is guided.

[0018] 2. The experiment machine has the advantages of simple structure, stable and reliable work and easy realization. DRAWINGS

[0019] Figure 1 It is a structure schematic view of the high-low temperature alternating environment wear simulation experiment machine.

[0020] In the figure, 1 - power distribution cabinet, 2 - start button, 3 - air compressor, 4 - temperature measuring device, 5 - electromagnetic induction heater, 6 - grate sample, 7 - nozzle, 8 - ceramic rod, 9 - second driving mechanism, 10 - grinder, 11 - elastic member, 12 - cooling water bucket, 13 - rack.

[0021] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not intended to limit the utility model.

[0023] It should be noted that in the description of the utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0024] REFERENCE Figure 1 In the preferred embodiment, a high-low temperature alternating environment wear simulation experiment machine includes a rack 13 and a heating mechanism, a wear mechanism, a blowing cooling mechanism and a clamping mechanism mounted on the rack 13, wherein,

[0025] The heating mechanism includes an electromagnetic induction heater 5 mounted on the rack 13, the wear mechanism includes a grinder 10 mounted on the rack 13, and a first driving mechanism (a pneumatic cylinder can be used) connected with the grinder 10 to drive it to move up and down, the clamping mechanism includes a clamp mounted on the rack 13 and a second driving mechanism 9 (a pneumatic cylinder can be used) to drive the clamp to move, and the blowing cooling mechanism is mounted on the rack 13 to blow and cool the grate sample 6 on the clamp.

[0026] Specifically, in the embodiment, the electromagnetic induction heater 5 is adjustable at 0~9KW power. The grinder 10 selects φ80*40 grinding wheel. The electromagnetic induction heater 5 is provided with a temperature controller to accurately control the heating temperature.

[0027] Further, the high-low temperature alternating environment wear simulation experiment machine further includes a temperature measuring device 4 mounted on the rack 13. The temperature measuring device 4 can use an infrared temperature sensor, and the measurement accuracy is ±2.5%.

[0028] Specifically, in the embodiment, the clamp comprises a ceramic rod, a connecting rod fixedly connected with the ceramic rod, and a base supporting the connecting rod, the second driving mechanism 9 is connected with the end of the connecting rod to drive the lateral movement of the connecting rod, and the ceramic rod is provided with a threaded hole at the end for inserting the grate sample 6.

[0029] The base comprises a support plate fixed on the frame 13, a support frame sleeved on the connecting rod, and a connecting plate fixed on the side surface of the support frame, the bottom of the connecting plate is elastically connected with the top end surface of the frame 13 through the elastic member 11, the end of the support plate is inserted into the slot on the side surface of the support frame, and the up-down movement displacement of the support frame is limited by the length of the slot. The elastic member 11 can be a spring. By arranging the elastic member 11 below the connecting plate, the contact load of the sample and the grinding wheel can be controlled.

[0030] Further, the two side surfaces of the support frame are provided with the connecting plates, and at least two elastic members 11 are arranged below the connecting plates.

[0031] In the embodiment, the air blowing cooling mechanism comprises a nozzle 7, an air compressor 3, and a metal hose connecting the nozzle 7 and the air compressor 3. The air compressor 3 is an oil-free silent air compressor with a maximum pressure of 0.8 MPa. The opening and closing of the air compressor 3 can be controlled by a pneumatic electromagnetic valve.

[0032] Further, the heating mechanism is also provided with a cooling device to cool it, and the cooling mechanism can accelerate the cooling of the electromagnetic induction heater 5. In the embodiment, the cooling device uses a cooling water bucket 12 to provide cooling water required for operation. The cooling water bucket 12 is fixed on the frame 13.

[0033] Further, the power distribution cabinet 1 is installed on the side surface of the frame 13, the controller is installed in the power distribution cabinet 1, and the controller is electrically connected with the first driving mechanism, the second driving mechanism 9, the grinding machine 10, and the electromagnetic induction heater 5, so as to realize the automatic control of the mechanisms. The actions of the contactor, the relay control heater, the grinding machine 10, and the air blowing electromagnetic valve are controlled.

[0034] Specifically, the grinding machine 10 is located between the clamp and the electromagnetic induction heater 5. The frame 13 is formed by assembling multiple aluminum profiles, and the frame 13 is provided with a roller at the bottom end surface to facilitate the movement of the frame 13.

[0035] The working process of the high-low temperature alternating environment wear simulation experiment machine is as follows: the grate bar sample 6 is inserted into the threaded hole on the clamp, and the grate bar sample 6 is fixed and connected by being screwed tightly, then the start button 2 of the distribution cabinet 1 is pressed, the cylinder of the second driving mechanism 9 is extended to drive the grate bar sample 6 to move to the induction heating area, the electromagnetic induction heater 5 is started to perform induction heating, the heating temperature is controlled to the target temperature by the temperature controller + infrared temperature sensor (4~20mA signal), and the temperature is kept for a period of time, then the second driving mechanism 9 drives the grate bar sample 6 to retract, so that the grate bar sample 6 moves to the above of the grinding machine 10, at this time the heating is stopped, then the air blowing cooling mechanism is controlled by the electromagnetic valve to blow and cool the grate bar sample 6, and the temperature is stopped to drop when the temperature drops to the target cooling temperature. The first driving mechanism drives the grinding machine 10 to move upwards so that the grinding machine 10 contacts the grate bar sample 6, then the grinding wheel speed and the contact load are selected and set according to the service condition, the grinding machine 10 is started, and the corresponding time is worn. The running process is completed by PLC programming. Finally, the wear depth of the grate bar sample 6 is measured by the differential micrometer, the wear condition of the sample is evaluated, and the experimental cycle can be repeated according to the experimental requirements.

[0036] The high-low temperature alternating environment wear simulation experiment machine has the following beneficial effects:

[0037] 1、Because the heating mechanism, the wear mechanism, the air blowing cooling mechanism and the clamping mechanism are cooperatively arranged, reciprocating temperature rising and falling, temperature monitoring, contact load, mechanical wear, cycle experiment and other factors can be realized, the actual working condition of the wear parts in the metallurgical process such as sintering and pelletizing can be restored with high precision, the influence of the coating technology on the service life of the grate bar is verified, and the selection of equipment materials and processing technology is guided;

[0038] 2、The experiment machine has the advantages of simple structure, stable and reliable work and easy realization.

[0039] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A high-low temperature alternating environment wear simulation test machine, characterized in that, The rack is provided with a heating mechanism, a grinding mechanism, a blowing cooling mechanism and a clamping mechanism, The heating mechanism comprises an electromagnetic induction heater mounted on the rack, the grinding mechanism comprises a grinding machine mounted on the rack and a first driving mechanism connected with the grinding machine to drive the grinding machine to move up and down, the clamping mechanism comprises a clamp mounted on the rack and a second driving mechanism to drive the clamp to move, and the blowing cooling mechanism is mounted on the rack to blow and cool the grate on the clamp.

2. The high-low temperature alternating environment wear simulation test machine of claim 1, wherein, The rack is further provided with a temperature measuring device mounted on the rack.

3. The high-low temperature alternating environment wear simulation test machine of claim 1, wherein, The clamp comprises a ceramic rod, a connecting rod fixedly connected with the ceramic rod and a base supporting the connecting rod, the second driving mechanism is connected with the end of the connecting rod to drive the connecting rod to move laterally, and the ceramic rod is provided with a threaded hole at the end for inserting the grate sample.

4. The high-low temperature alternating environment wear simulator of claim 3, wherein, The base comprises a support plate fixed on the rack, a support frame sleeved on the connecting rod and a connecting plate fixed on the side of the support frame, the bottom of the connecting plate is elastically connected with the top end surface of the rack through elastic members, the end of the support plate is inserted into the slot on the side of the support frame, and the length of the slot defines the up-down movement displacement of the support frame.

5. The high-low temperature alternating environment wear simulator of claim 4, wherein, The support frame is provided with the connecting plate on both sides, and at least two elastic members are mounted below the connecting plate.

6. The high-low thermal shock environment wear simulator machine of claim 1, wherein, The blowing cooling mechanism comprises a nozzle, an air compressor and a metal hose connected between the nozzle and the air compressor.

7. The high-low thermal shock environment wear simulator machine of claim 1, wherein, The heating mechanism is further provided with a cooling device to cool the heating mechanism.

8. The high-low thermal shock environment wear simulator machine of claim 1, wherein, A power distribution cabinet is mounted on the side of the rack, a controller is mounted in the power distribution cabinet, and the controller is electrically connected with the first driving mechanism, the second driving mechanism, the grinding machine and the electromagnetic induction heater.

9. The high-low thermal shock environment wear simulator machine of claim 1, wherein, The grinding machine is located between the clamp and the electromagnetic induction heater.

10. The high-low thermal shock environment wear simulator machine according to any one of claims 1 to 9, wherein, The rack is formed by assembling a plurality of aluminum profiles, and the bottom end surface of the rack is provided with a roller.

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