High-temperature-oxidation-resistant cast iron brake disc material

Abstract

The invention relates to the technical field of brake discs, in particular to a high-temperature oxidation resistant cast iron brake disc material which comprises Fe element, C element, Si element and other elements, the other elements at least comprise all of Mn, P, S, Mo, Sn, Sr and Al, and the content of the elements in vermicular graphite cast iron is as follows: 3.6% < = C < = 3.75%; 1.4% < Si < = 1.6%; 0.35% < = Mn < = 0.55%; the inoculation effect is strengthened through trace Sr and Al elements, graphite particles can be fewer under the condition of the same graphite content, the graphite length is longer, and therefore the high-temperature oxidation path is reduced while the high heat-conducting property is obtained; the content of the Mo element is increased, the content of the Mo element is made to range from 0.45% to 0.6%, the Si / Mo content ratio ranges from 0.28 to 0.42, and bone-shaped carbides are separated out among graphite particles at the end of the eutectic reaction to further hinder formation of a high-temperature oxidation path; and meanwhile, the atomic radius of the Mo element is large, a strong solid solution strengthening effect is achieved, and the crack propagation resistance of a matrix can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of brake discs, and in particular to a high temperature resistant oxidation cast iron brake disc material. Background Art

[0002] The brake disc of a heavy-duty vehicle needs to provide a large braking inertia on a small friction area. The peak temperature of the brake disc during braking is usually over 450°C. At this time, the brake disc material will react with the air and oxygen decomposed by the heat of the brake pad at high temperatures, causing oxidation and embrittlement of the matrix, thereby aggravating the expansion of thermal fatigue cracks and causing the brake disc to fail.

[0003] The brake discs of civil commercial vehicles and passenger cars are usually made of cast iron. There is a significant difference in the thermal expansion of the graphite phase and the iron matrix in the cast iron material. The gap formed between the two when the temperature changes promotes the high-temperature oxidation process. This causes oxidation channels to form between different graphite particles, which becomes the main path for the expansion of thermal fatigue cracks. Therefore, inhibiting the formation of high-temperature oxidation channels between graphite particles is the fundamental way to increase the service life of cast iron brake discs.

[0004] There are three main types of cast iron materials used for conventional brake discs; the first is high-carbon cast iron, which increases the carbon content to obtain more graphite content to improve the thermal conductivity of the material; however, since cast iron still contains 85%-90% iron matrix, when the braking inertia is large, the brake disc still has the phenomenon of high-temperature oxidation; the second is alloy cast iron, which improves the mechanical properties of the iron matrix by adding alloys such as Cr and Cu; however, due to the existence of high-temperature oxidation, thermal fatigue cracks will extend along the oxidation channel; when the peak temperature of the brake disc is high, the improvement of the mechanical properties of the iron matrix has little effect on the service life; the third is to apply a dense coating on the surface of the cast iron brake disc at high temperature, but the dense coating reduces the thermal conductivity of the brake disc and causes the friction coefficient of the brake disc to decline on the one hand, and on the other hand, it will lose its protective ability after a period of wear. Summary of the invention

[0005] The problem solved by the present invention is to provide a high-temperature oxidation-resistant cast iron brake disc material. By strengthening the inoculation effect of trace Sr and Al elements, the graphite particles can be reduced and the graphite length can be longer at the same graphite content, thereby reducing the high-temperature oxidation path while obtaining higher thermal conductivity; the content of the Mo element is increased, so that the Mo element content is between 0.45% and 0.6%, and the Si / Mo content ratio is between 0.28 and 0.42, and bone-like carbides are precipitated between the graphite particles at the end of the eutectic reaction to further hinder the formation of the high-temperature oxidation path; at the same time, the Mo element has a large atomic radius and a strong solid solution strengthening effect, which can improve the matrix's ability to resist crack propagation.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high temperature resistant oxidation cast iron brake disc material, the formula includes: composed of Fe element, C element, Si element and other elements, the other elements at least include all of Mn, P, S, Mo, Sn, Sr and Al, and the content of each element in the vermicular graphite cast iron is as follows by weight percentage: 3.6%≤C≤3.75%; 1.4%<Si≤1.6%; 0.35%≤Mn≤0.55%; 0.02%≤P≤0.03%; 0.01%≤S≤0.02%; 0.45%≤Mo≤0.6%; Sn≤0.035%; 0.001%≤Sr≤0.006%; 0.009%≤Al≤0.02%; the remaining elements are Fe element.

[0007] Preferably, a processing technology used for a high temperature resistant oxidation cast iron brake disc material is mainly reflected in the inoculation stage of gray cast iron, and includes the following steps:

[0008] Fe-Si particles and Sr-Al particles are placed at the bottom of the ladle, wherein the particle size of the Sr-Al particles is between 0.1 and 3 mm, and the amount of Sr-Al particles added meets the above-mentioned composition requirements; after the molten iron is melted, it is kept warm at a temperature of 1530-1550° C. for 5-10 minutes to obtain high-temperature molten iron, which is then directly poured into the vermicular ladle for primary inoculation, and then during the pouring process, the Fe-Si particles are continuously used in the pouring equipment for secondary inoculation; the particle size of the Fe-Si particles is between 1 and 6 mm, and the amount of Fe-Si particles added in the primary inoculation and the secondary inoculation is 0.2% and 0.25% of the total weight of the molten iron, respectively.

[0009] Preferably, the pouring equipment in the processing technology includes a pouring device body, a sealing cover, a moving component, a cooling component and a pouring pipe. A sealing cover is installed on the outside of the pouring device body, and a moving component is installed on the sealing cover and the pouring device body. A cooling component is installed on the pouring device body, and a pouring pipe is connected to the top of the pouring device body.

[0010] Preferably, the moving assembly includes a motor, a first gear, a toothed belt, a support plate, a rotating hole, a fixed ring, a slip ring, a second gear, a threaded hole, a support pad, a connecting plate and a screw rod, a connecting plate is symmetrically fixedly connected to an outer wall on one side of the sealing cover, a screw rod is rotatably connected to an outer wall on one side of the connecting plate, a support pad is symmetrically fixedly connected to an outer wall on one side of the pouring device body at a position corresponding to the screw rod, a support plate is symmetrically fixedly connected to an outer wall on one side of the pouring device body, a rotating hole is provided on the support plate at a position corresponding to the screw rod, a fixing ring is fixedly connected to an outer wall on one side of the support plate, a slip ring is slidably connected to the fixing ring, a second gear is fixedly connected to one side of the slip ring, a threaded hole is provided in the middle of the second gear at a position corresponding to the screw rod, and a toothed belt is meshingly installed on an outer wall on one side of the second gear.

[0011] Preferably, a first gear is meshedly installed in the toothed belt, a motor is embedded and installed on one side of the watering device body, and one end of the output shaft of the motor is fixedly connected to the outer wall of the first gear.

[0012] Preferably, the cooling assembly includes an electromagnetic adsorption plate, a third gear, a rotating shaft, an eccentric wheel, a cooling box, a sealing port, a sealing arc plate, a cooler, a spring, an extrusion frame, a cooling groove and a water inlet hole. A cooling groove is provided in the main body of the sprinkler, and a water inlet hole is provided on the inner wall of the bottom end of the cooling groove. A cooling box is fixedly connected to the outer wall of the bottom end of the main body of the sprinkler, and a sealing arc plate is sealed in the cooling box. A cooler is symmetrically installed on the top end of the sealing arc plate, a spring is fixedly connected to the outer wall of the top end of the sealing arc plate, and the top end of the spring is fixedly connected to the outer wall of the main body of the sprinkler, an extrusion frame is symmetrically fixedly connected to the outer wall of the top end of the sealing arc plate, a sealing port is symmetrically provided at the top end of the cooling box corresponding to the position of the extrusion frame, and an electromagnetic adsorption plate is symmetrically installed on the outer wall of one side of the sprinkler main body corresponding to the position of the extrusion frame.

[0013] Preferably, an eccentric wheel is contactingly mounted on the outer wall of the bottom end of the extrusion frame, a rotating shaft is fixedly connected to the outer wall of one side of the eccentric wheel, and one side of the rotating shaft is rotatably connected to the inner wall of the support plate, a third gear is fixedly connected to the outer wall of one end of the rotating shaft, and one side of the third gear is meshingly mounted on the inner wall of the toothed belt.

[0014] Preferably, a snap-fit ​​groove is provided on one side of the watering device body, and a sealing ring is fixedly connected to an outer wall of one side of the sealing cover at a position corresponding to the snap-fit ​​groove.

[0015] Preferably, a water supply pipe is connected through the top of the cooling box, and a valve is installed on the water supply pipe.

[0016] The beneficial effects of the present invention are as follows: by strengthening the inoculation effect by trace Sr and Al elements, the graphite particles can be reduced and the graphite length can be extended at the same graphite content, thereby obtaining higher thermal conductivity and reducing the high-temperature oxidation path; the content of the Mo element is increased, so that the Mo element content is between 0.45% and 0.6%, and the Si / Mo content ratio is between 0.28 and 0.42, and bone-like carbides are precipitated between the graphite particles at the end of the eutectic reaction to further hinder the formation of the high-temperature oxidation path; at the same time, the Mo element has a large atomic radius and a strong solid solution strengthening effect, which can improve the crack propagation resistance of the matrix;

[0017] The mobile components can automatically open the pouring equipment after pouring and cooling, and then take out the pouring parts, which simplifies the taking and placing process and improves the use effect of the equipment;

[0018] The cooling component is used to cool the casting, eliminating the need for long-term air cooling, reducing the cooling time and improving the cooling efficiency of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The graphite particles and metal matrix distribution diagram of the oxidized cast iron brake disc of the present invention;

[0020] Figure 2 This is the distribution diagram of graphite and high Mo carbide of the oxidized cast iron brake disc of the present invention;

[0021] Figure 3 It is the overall three-dimensional structural diagram of the watering device of the present invention;

[0022] Figure 4 It is a three-dimensional structural diagram of the other side of the watering device of the present invention;

[0023] Figure 5 It is a front view cutaway structural diagram of the watering device of the present invention;

[0024] Figure 6 It is a top view cutaway structural diagram of the watering device of the present invention;

[0025] Figure 7 It is the internal three-dimensional structure diagram of the watering device of the present invention.

[0026] Legend:

[0027] 1. Irrigator body; 2. Sealing cover; 3. Moving assembly; 4. Cooling assembly; 5. Casting pipe; 6. Engaging groove; 7. Sealing ring; 8. Water supply pipe; 9. Valve; 301. Motor; 302. First gear; 303. Toothed belt; 304. Support plate; 305. Rotating hole; 306. Fixed ring; 307. Slip ring; 308. Second gear; 309. Threaded hole; 3010. Support pad; 3011. Connecting plate; 3012. Screw; 401. Electromagnetic adsorption plate; 402. Third gear; 403. Rotating shaft; 404. Eccentric wheel; 405. Cooling box; 406. Sealing port; 407. Sealing arc plate; 408. Cooler; 409. Spring; 4010. Extrusion frame; 4011. Cooling groove; 4012. Water inlet hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] See also Figure 1-2 A high temperature oxidized cast iron brake disc material, the formula of which includes: Fe, C, Si and other elements, the other elements at least include all of Mn, P, S, Mo, Sn, Sr and Al, and the content of each element in the vermicular graphite cast iron is as follows by weight percentage: 3.6%≤C≤3.75%; 1.4%<Si≤1.6%; 0.35%≤Mn≤0.55%; 0.02%≤P≤0.03%; 0.01%≤S≤0.02%; 0.45%≤Mo≤0.6%; Sn≤0.035%; 0.001%≤Sr≤0.006%; 0.009%≤Al≤0.02%; the remaining elements are Fe.

[0031] The graphite morphology in the metallographic structure of cast iron should meet the average phase spacing between 0.048-0.052mm; the average phase spacing Lp is defined as:

[0032]

[0033] Where PL is the number of intersections between the unit length measurement line and graphite, and VG is the area percentage of graphite; Figure 1 As shown, the black part is graphite particles and the white part is metal matrix;

[0034] The silicon content and Mo content are kept within a certain range: 1.4%<Si≤1.6%, 0.45%≤Mo≤0.6%; and the Si / Mo content ratio is between 0.28-0.42; this causes the precipitation of bone-like high-Mo carbides between graphite particles, hindering the formation of oxidation channels between graphite particles and aggravating the expansion of thermal fatigue cracks; Figure 2 As shown, the black color is graphite and the white-gray color is high Mo carbide.

[0035] Embodiment 2

[0036] A processing technology used for high temperature oxidation resistant cast iron brake disc material, mainly reflected in the inoculation stage of gray cast iron, includes the following steps:

[0037] Fe-Si particles and Sr-Al particles are placed at the bottom of the ladle, wherein the particle size of the Sr-Al particles is between 0.1 and 3 mm, and the amount of Sr-Al particles added meets the above-mentioned composition requirements; after the molten iron is melted, it is kept warm at a temperature of 1530-1550° C. for 5-10 minutes to obtain high-temperature molten iron, which is then directly poured into the vermicular ladle for primary inoculation, and then during the pouring process, the Fe-Si particles are continuously used in the pouring equipment for secondary inoculation; the particle size of the Fe-Si particles is between 1 and 6 mm, and the amount of Fe-Si particles added in the primary inoculation and the secondary inoculation is 0.2% and 0.25% of the total weight of the molten iron, respectively.

[0038] The casting was placed on an inertia test bench, and then the heat fatigue resistance of the brake disc was tested under a braking inertia of 80 kg·m2. The vehicle speed was braked from 140 km / h to 10 km / h for one cycle. After 300 braking cycles, the cracks on the surface of the brake disc were observed. It can be observed that there are a large number of penetrating cracks on the wear surface of the ordinary HT250 brake disc, and the length of the cracks exceeds 2 / 3 of the friction surface of the brake disc. However, no obvious macro cracks appear on the wear surface of the brake disc of the present invention.

[0039] Embodiment 3

[0040] See also Figure 3 to Figure 7 The pouring equipment in the processing technology includes a pouring device body 1, a sealing cover 2, a moving component 3, a cooling component 4 and a pouring pipe 5. The sealing cover 2 is installed outside the pouring device body 1, and the moving component 3 is installed on the sealing cover 2 and the pouring device body 1. The cooling component 4 is installed on the pouring device body 1, and the top of the pouring device body 1 is connected with the pouring pipe 5; a clamping groove 6 is opened on one side of the pouring device body 1, and a sealing ring 7 is fixedly connected to the position corresponding to the clamping groove 6 on the outer wall of one side of the sealing cover 2. The sealing ring 7 on the sealing cover 2 is inserted into the inside of the clamping groove 6 to seal the pouring device body 1; a water supply pipe 8 is connected to the top of the cooling box 405, and a valve 9 is installed on the water supply pipe 8. When the clean water in the cooling box 405 is less, the valve 9 is opened, and then the water supply treatment is carried out through the water supply pipe 8;

[0041] The moving assembly 3 includes a motor 301, a first gear 302, a toothed belt 303, a support plate 304, a rotating hole 305, a fixing ring 306, a slip ring 307, a second gear 308, a threaded hole 309, a support pad 3010, a connecting plate 3011 and a screw 3012. The connecting plate 3011 is symmetrically fixedly connected to the outer wall of one side of the sealing cover 2, and the screw 3012 is rotatably connected to the outer wall of one side of the connecting plate 3011. The support pad 3010 is symmetrically fixedly connected to the outer wall of one side of the watering device body 1 at a position corresponding to the screw 3012. The support plate 304 is symmetrically fixedly connected to the outer wall of one side of the watering device body 1, and the support plate 304 is provided with a rotating hole 305 at a position corresponding to the screw 3012. A fixing ring 306 is fixedly connected to the outer wall of one side of the 4, and a slip ring 307 is slidably connected to the fixing ring 306. A second gear 308 is fixedly connected to one side of the slip ring 307. A threaded hole 309 is provided in the middle of the second gear 308 corresponding to the position of the screw rod 3012. A toothed belt 303 is meshedly installed on the outer wall of one side of the second gear 308; a first gear 302 is meshedly installed in the toothed belt 303, a motor 301 is embedded and installed on one side of the watering device body 1, and one end of the output shaft of the motor 301 is fixedly connected to the outer wall of the first gear 302. The motor 301 is started to rotate the first gear 302, and then under the action of the toothed belt 303, the second gear 308 on the slip ring 307 rotates along the fixing ring 306.

[0042] Working principle: First, cool the clean water in the cooling box 405 through the cooler 408, start the motor 301 to rotate the first gear 302, and then under the action of the toothed belt 303, the second gear 308 on the slip ring 307 rotates along the fixed ring 306, and then under the action of the threaded hole 309 and supported by the support pad 3010, the screw rod 3012 on the connecting plate 3011 rotates and moves in the rotating hole 305 on the support plate 304, so that the sealing ring 7 on the sealing cover 2 is inserted into the clamping groove 6, so that the pouring device body 1 is sealed, and then the pouring device body 1 is poured. When the casting needs to be taken out When the first gear 302 is rotated in the reverse direction, the motor 301 is started to make the first gear 302 rotate in the reverse direction. Then, under the action of the toothed belt 303, the second gear 308 on the slip ring 307 rotates in the reverse direction along the fixed ring 306. Then, under the action of the threaded hole 309 and supported by the support pad 3010, the screw rod 3012 on the connecting plate 3011 is reset and moved in the rotating hole 305 on the support plate 304, so that the sealing ring 7 on the sealing cover 2 is separated from the engaging groove 6, and the brake disc is taken out. After the casting is cooled, the casting equipment can be automatically opened, and then the casting parts can be taken out conveniently, which simplifies the picking and placing process and improves the use effect of the equipment.

[0043] Embodiment 4

[0044] See also Figure 5 to Figure 7 The cooling assembly 4 includes an electromagnetic adsorption plate 401, a third gear 402, a rotating shaft 403, an eccentric wheel 404, a cooling box 405, a sealing port 406, a sealing arc plate 407, a cooler 408, a spring 409, an extrusion frame 4010, a cooling groove 4011 and a water inlet 4012. A cooling groove 4011 is provided in the main body 1 of the watering device, and a water inlet 4012 is provided on the inner wall of the bottom end of the cooling groove 4011. The cooling box 405 is fixedly connected to the outer wall of the bottom end of the watering device main body 1. The sealing arc plate 407 is sealed in the cooling box 405. The cooler 408 is symmetrically installed on the top of the sealing arc plate 407. The spring 409 is fixedly connected to the outer wall of the top end of the sealing arc plate 407, and the top end of the spring 409 is fixedly connected to the outer wall of the main body 1 of the watering device. The sealing arc plate 407 is symmetrically fixed on the outer wall of the top end. An extrusion frame 4010 is connected, and a sealing opening 406 is symmetrically provided on the top of the cooling box 405 corresponding to the position of the extrusion frame 4010, and an electromagnetic adsorption plate 401 is symmetrically installed on the outer wall of one side of the watering device body 1 corresponding to the position of the extrusion frame 4010; an eccentric wheel 404 is contactingly installed on the outer wall of the bottom end of the extrusion frame 4010, and a rotating shaft 403 is fixedly connected to the outer wall of one side of the eccentric wheel 404, and one side of the rotating shaft 403 is rotatably connected to the inner wall of the support plate 304, and a third gear 402 is fixedly connected to the outer wall of one end of the rotating shaft 403, and one side of the third gear 402 is meshingly installed on the inner wall of the toothed belt 303, and the extrusion frame 4010 is extruded by the raised part of the eccentric wheel 404, so that the extrusion frame 4010 on the sealing arc plate 407 rises along the sealing opening 406 in the cooling box 405.

[0045] Working principle: First, the clean water in the cooling box 405 is cooled by the cooler 408, and the motor 301 is started to rotate the first gear 302. Then, under the action of the toothed belt 303, the second gear 308 on the slip ring 307 is rotated along the fixed ring 306. Then, under the action of the threaded hole 309 and supported by the support pad 3010, the screw rod 3012 on the connecting plate 3011 is rotated and moved in the rotating hole 305 on the supporting plate 304, so that the sealing ring 7 on the sealing cover 2 is inserted into the engaging groove 6, so that the watering device body 1 is sealed. Then, under the action of the toothed belt 303, the third gear 402 is rotated, and then the eccentric wheel 404 on the rotating shaft 403 is rotated. The convex part of the sealing arc plate 407 is used to extrude the extrusion frame 4010, so that the extrusion frame 4010 on the sealing arc plate 407 rises along the sealing port 406 in the cooling box 405, and the cold water is injected into the cooling trough 4011 through the water inlet hole 4012 through the sealing arc plate 407, and then the casting material is injected into the inside of the pouring device body 1 through the pouring pipe 5, and then the casting is cooled by cold water. When the casting is taken out, the electromagnetic adsorption plate 401 is closed. At this time, under the action of the spring 409, the sealing arc plate 407 is reset. At this time, under the action of gravity, the cold water is refluxed through the water inlet hole 4012, so that water resources are reused, and the casting can be cooled. There is no need for long-term air cooling, which shortens the cooling time and improves the cooling efficiency of the casting.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature resistant oxidation cast iron brake disc material, characterized in that: The formula includes: Fe, C, Si and other elements, and the other elements include at least all of Mn, P, S, Mo, Sn, Sr and Al. Calculated by weight percentage, the content of each element in the vermicular graphite cast iron is: 3.6%≤C≤3.75%; 1.4%<Si≤1.6%; 0.35%≤Mn≤0.55%; 0.02%≤P≤0.03%; 0.01%≤S≤0.02%; 0.45%≤Mo≤0.6%; Sn≤0.035%; 0.001%≤Sr≤0.006%; 0.009%≤Al≤0.02%; the remaining elements are Fe.

2. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 1 is characterized in that: It is mainly reflected in the incubation stage of gray cast iron, including the following steps; Fe-Si particles and Sr-Al particles are placed at the bottom of the ladle, wherein the particle size of the Sr-Al particles is between 0.1 and 3 mm, and the amount of Sr-Al particles added meets the above-mentioned composition requirements; after the molten iron is melted, it is kept warm at a temperature of 1530-1550° C. for 5-10 minutes to obtain high-temperature molten iron, which is then directly poured into the vermicular ladle for primary inoculation, and then during the pouring process, the Fe-Si particles are continuously used in the pouring equipment for secondary inoculation; the particle size of the Fe-Si particles is between 1 and 6 mm, and the amount of Fe-Si particles added in the primary inoculation and the secondary inoculation is 0.2% and 0.25% of the total weight of the molten iron, respectively.

3. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 2 is characterized in that: The pouring equipment in the processing technology comprises a pouring device body (1), a sealing cover (2), a moving component (3), a cooling component (4), a pouring pipe (5), a locking groove (6), a sealing ring (7), a water supply pipe (8), a valve (9), a motor (301), a first gear (302), a toothed belt (303), a support plate (304), a rotating hole (305), a fixing ring (306), a slip ring (307), a second gear (308), a threaded hole (309), a support pad (3010), a connecting plate (3011), a screw rod (3012), and an electromagnetic adsorption plate (401). , a third gear (402), a rotating shaft (403), an eccentric wheel (404), a cooling box (405), a sealing port (406), a sealing arc plate (407), a cooler (408), a spring (409), an extrusion frame (4010), a cooling groove (4011), and a water inlet hole (4012); a sealing cover (2) is installed outside the irrigation device body (1); a moving component (3) is installed on the sealing cover (2) and the irrigation device body (1); a cooling component (4) is installed on the irrigation device body (1); and a pouring pipe (5) is connected to the top of the irrigation device body (1).

4. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 3 is characterized in that: The moving assembly (3) comprises a motor (301), a first gear (302), a toothed belt (303), a support plate (304), a rotating hole (305), a fixing ring (306), a slip ring (307), a second gear (308), a threaded hole (309), a support pad (3010), a connecting plate (3011) and a screw rod (3012); the connecting plate (3011) is symmetrically fixedly connected to an outer wall of one side of the sealing cover (2); the screw rod (3012) is rotatably connected to an outer wall of one side of the connecting plate (3011); and the support pad is symmetrically fixedly connected to an outer wall of one side of the watering device body (1) at a position corresponding to the screw rod (3012). (3010), a support plate (304) is symmetrically fixedly connected to the outer wall of one side of the watering device body (1), a rotating hole (305) is opened on the support plate (304) at the position corresponding to the screw rod (3012), a fixing ring (306) is fixedly connected to the outer wall of one side of the support plate (304), a slip ring (307) is slidably connected to the fixing ring (306), a second gear (308) is fixedly connected to one side of the slip ring (307), a threaded hole (309) is opened in the middle of the second gear (308) at the position corresponding to the screw rod (3012), and a toothed belt (303) is meshingly installed on the outer wall of one side of the second gear (308).

5. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 4 is characterized in that: A first gear (302) is meshedly mounted inside the toothed belt (303), a motor (301) is embedded and mounted on one side of the watering device body (1), and one end of the output shaft of the motor (301) is fixedly connected to the outer wall of the first gear (302).

6. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 3 is characterized in that: The cooling assembly (4) comprises an electromagnetic adsorption plate (401), a third gear (402), a rotating shaft (403), an eccentric wheel (404), a cooling box (405), a sealing port (406), a sealing arc plate (407), a cooler (408), a spring (409), an extrusion frame (4010), a cooling groove (4011) and a water inlet hole (4012). The watering device body (1) is provided with a cooling groove (4011), and the inner wall at the bottom end of the cooling groove (4011) is provided with a water inlet hole (4012). The outer wall at the bottom end of the watering device body (1) is fixedly connected with the cooling box (405), and the cooling box (405) The inner seal is connected with a sealing arc plate (407), and a cooler (408) is symmetrically installed on the top of the sealing arc plate (407). A spring (409) is fixedly connected to the outer wall of the top of the sealing arc plate (407), and the top of the spring (409) is fixedly connected to the outer wall of the pouring device body (1). An extrusion frame (4010) is symmetrically fixedly connected to the outer wall of the top of the sealing arc plate (407). A sealing opening (406) is symmetrically opened at the top of the cooling box (405) corresponding to the position of the extrusion frame (4010), and an electromagnetic adsorption plate (401) is symmetrically installed on the outer wall of one side of the pouring device body (1) corresponding to the position of the extrusion frame (4010).

7. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 6 is characterized in that: An eccentric wheel (404) is contact-mounted on the outer wall of the bottom end of the extrusion frame (4010), a rotating shaft (403) is fixedly connected to the outer wall of one side of the eccentric wheel (404), and one side of the rotating shaft (403) is rotatably connected to the inner wall of the support plate (304), a third gear (402) is fixedly connected to the outer wall of one end of the rotating shaft (403), and one side of the third gear (402) is meshingly mounted on the inner wall of the toothed belt (303).

8. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 3 is characterized in that: A snap-fit ​​groove (6) is provided on one side of the watering device body (1), and a sealing ring (7) is fixedly connected to a position corresponding to the snap-fit ​​groove (6) on an outer wall of one side of the sealing cover (2).

9. The processing technology used for the high temperature oxidation resistant cast iron brake disc material according to claim 6 is characterized in that: A water supply pipe (8) is connected through the top end of the cooling box (405), and a valve (9) is installed on the water supply pipe (8).

Images