Hot rolling equipment and processing technology for aluminum alloy composite material

Abstract

The invention belongs to the technical field of aluminum alloy hot rolling, and particularly relates to hot rolling equipment and a machining process of an aluminum alloy composite material. The hot rolling equipment comprises at least three sets of hot rolling rollers which are symmetrically arranged up and down, and conveying rollers are arranged between every two adjacent sets of hot rolling rollers and on the two sides of the hot rolling rollers; spraying mechanisms for spraying emulsified liquid are arranged on the two sides of the hot rolling roller, and drainage grooves are formed in the two sides of the conveying roller. According to the hot rolling equipment for the aluminum alloy composite material, an aluminum alloy blank is placed above the conveying roller and conveyed to the hot rolling roller through the conveying roller to be subjected to hot rolling, and in the hot rolling process, emulsified liquid is sprayed to the hot rolling roller from the emulsified liquid spraying opening to flush away aluminum powder on the surface of the hot rolling roller; the flushed aluminum powder falls above the aluminum alloy blank, meanwhile, the spraying sleeve and the emulsified liquid spraying hole obliquely spray the emulsified liquid outwards, the fallen aluminum powder can be rapidly flushed to the outer side of the aluminum alloy blank, and therefore the blown aluminum powder can be prevented from being bonded with the aluminum alloy blank.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum alloy hot rolling, and in particular relates to hot rolling equipment for aluminum alloy composite materials. Background Art

[0002] The hot rolling of aluminum alloys has high rolling temperature and heavy rolling load, which will produce a large amount of aluminum powder. These newly generated aluminum powders will be pressed into the surface of the rollers under high temperature and high pressure conditions, thus affecting the quality of the roller surface and the quality of the rolled strip. What is more serious is that the aluminum powder at high temperature has strong viscosity and is not easy to fall off under normal conditions, which makes it difficult to remove. When there is a lot of aluminum and aluminum powder on the roller surface, it is easy to puncture the lubricating oil film during the rolling process, resulting in lubrication failure, thus causing hot rolling defects.

[0003] Aluminum powder may be pressed into the surface of aluminum alloy plates, forming tiny pits or protrusions, destroying the flatness and finish of the surface. Aluminum powder may accelerate the oxidation of aluminum alloys during hot rolling, resulting in the formation of an oxide layer or corrosion spots on the surface, reducing the corrosion resistance and appearance quality of the product.

[0004] For example, the Chinese patent with publication number CN103450985B discloses an aluminum and aluminum alloy hot rolling ionic emulsion composition, which uses No. 5 full-loss system oil as base oil; and multiple additives including: anti-wear agent, oiliness agent, antioxidant preservative, bactericide, emulsifier, metal deactivator, coupling agent, etc. The aluminum plate hot rolling ionic emulsion has good cooling and lubricity, moderate thermal decomposition, good aluminum powder separation ability, no corrosion to rollers and related equipment, no taste, no toxicity, long service life, and convenient maintenance and management.

[0005] By changing the ratio of the emulsion, the aluminum powder separation capacity is increased. However, if the aluminum powder cannot be washed away in time during the hot rolling process, it will be squeezed into the billet again by the hot rolling rollers.

[0006] For example, the Chinese patent with publication number CN112718865B discloses a production method for reducing aluminum and aluminum powder sticking to the aluminum alloy hot rolling roller surface, by increasing the roller gap at a certain speed before rolling tail casting, reducing the rolling thickness, and increasing the amount of rolling emulsion spray; after the rolling is completed, the working roller is operated at a certain speed, the emulsion spray amount is increased, and the working roller brush is turned on to wash the roller surface. It not only reduces the aluminum powder generated during the rolling process, but also reduces the aluminum powder content on the roller surface, and improves the cleaning ability of the hot rolling roller surface, thereby achieving the purpose of reducing aluminum and aluminum powder sticking to the aluminum alloy hot rolling roller surface.

[0007] The above patent has the following problems: first, the time point for cleaning the hot rolling rollers proposed in the patent is after rolling is completed. During the rolling process, aluminum powder has already adhered to the surface of the rollers and the billet. For the finished billet surface, aluminum powder has already adhered to the billet surface. Secondly, even if the rollers are cleaned during the rolling process, the aluminum powder that falls off during cleaning will fall onto the billet surface. Therefore, a new aluminum alloy hot rolling equipment and process are needed. Summary of the invention

[0008] The purpose of the present invention is to provide a hot rolling equipment for aluminum alloy composite materials in order to prevent blown aluminum powder from adhering to the aluminum alloy billet.

[0009] In view of this, the present invention provides a hot rolling equipment for aluminum alloy composite materials, comprising at least three groups of hot rolling rollers symmetrically arranged up and down, conveying rollers are arranged between two adjacent groups of hot rolling rollers and on both sides of the hot rolling rollers, spray mechanisms for spraying emulsion are arranged on both sides of the hot rolling rollers, drainage grooves are arranged on both sides of the conveying rollers, lifting sleeves that can be lifted up and down are arranged on the outer sides of the hot rolling rollers and the conveying rollers, a power mechanism for driving the hot rolling rollers and the conveying rollers to rotate is fixedly installed on the outer side of the lifting sleeves, a fixed frame is arranged above the conveying rollers, the lifting sleeves located at the upper end are fixedly connected to the fixed frame, fixed frames are fixedly installed on both sides of the free end of the lifting sleeves, the spray mechanism is located at one end of the fixed frame away from the lifting sleeve, the spray mechanism is located on both sides of the hot rolling rollers, the spray mechanism comprises an emulsion spray pipe, and the middle part of the emulsion spray pipe is fixed A sealing gasket is installed, which divides the emulsion spray pipe into left and right parts, wherein a group of emulsion spray holes are opened on the side away from the hot-rolling roller, and the side close to the hot-rolling roller is divided into three parts of upper, middle and lower by a dividing plate, and a group of emulsion spray holes are opened on the part of the emulsion spray pipe located below the dividing plate, and an emulsion injection port is opened on the part of the emulsion spray pipe located below the dividing plate, and a baffle covering the bottom of the liquid inlet part is fixedly installed inside the emulsion spray pipe above the dividing plate, and the other end of the baffle does not contact the inner wall of the emulsion spray pipe, and a spray sleeve is fixedly installed on the dividing plate below the baffle, and the spray sleeve downwardly penetrates the emulsion spray pipe, and the spray sleeve is located between adjacent emulsion spray holes, and a motor is fixedly installed on one side of the fixed frame, the emulsion spray pipe is rotatably connected to the fixed frame, and the output end of the motor is fixedly connected to the emulsion spray pipe.

[0010] Preferably, one end of the emulsion spray pipe away from the motor is rotatably connected to a water inlet cover, the water inlet cover covers half of the emulsion spray pipe, and the water inlet cover is fixedly connected to the fixing frame.

[0011] Preferably, the fixing frame includes a fixing ring, which is fixedly sleeved on the outer surface of the motor, and limiting rings are sleeved on both ends of the outer surface of the emulsion spray pipe. The inner ring of the limiting ring is fixedly installed with a raised ring, and the outer surface of the emulsion spray pipe is provided with a groove adapted to the raised ring, and the inner ring of the limiting ring is fixedly installed with a spring locating head, and the outer surface of the emulsion spray pipe is provided with a locating hole engaged with the spring locating head, the limiting ring and the top end of the fixing ring are fixedly connected by a cross beam, and the water inlet cover is fixedly connected to the cross beam.

[0012] Preferably, the fixed frame also includes a fixed plate, a sliding lifting block is fixedly installed on the top of the cross beam, a sliding lifting groove is opened at the bottom end of the fixed plate, the sliding lifting block is slidably connected to the inside of the sliding lifting groove, and a telescopic rod is fixedly installed on one end of the fixed plate, the telescopic rod is parallel to the cross beam, and the free end of the telescopic rod is fixedly connected to the cross beam.

[0013] Preferably, a flange is fixedly mounted on one end of the emulsion spray pipe away from the motor, and a sliding cavity adapted to the flange is provided inside the water inlet cover.

[0014] Preferably, the cross-sectional area of ​​the spray sleeve is the same as the area of ​​the emulsion spray hole, and the spray sleeve and the emulsion spray hole are inclined to the same side.

[0015] Preferably, both ends of the sealing gasket on one side close to the emulsion spray hole are bulged outward, and the total area of ​​the emulsion spray hole is smaller than the total area of ​​the emulsion shower hole.

[0016] Preferably, the effective telescopic length of the telescopic rod is greater than the distance between two adjacent emulsion spray holes.

[0017] A hot rolling process for an aluminum alloy composite material comprises the following steps: S1. Reduce the gap between the upper and lower hot rolling rollers in the feeding direction and spray the emulsion through the emulsion spray pipe; S2. The conveyor roller conveys the aluminum alloy billet and passes through the hot rolling roller in sequence; S3. The three sets of hot rolling rollers are lifted up in sequence during the hot rolling process, and the emulsion spray pipe is rotated to spray the emulsion onto the hot rolling rollers through the emulsion spray holes to remove the aluminum powder on the surface; S4. Adjust the distance between the hot rolling rollers so that the gap between the two hot rolling rollers gradually increases from the initial feeding direction, and the gap between the two largest hot rolling rollers is smaller than the gap between the two smallest hot rolling rollers in S1; S5. The power mechanism drives the conveying roller to move in the reverse direction, so that the aluminum alloy billet after hot rolling once passes through the two hot rolling rollers again.

[0018] Preferably, the gaps between the three groups of hot rolling rollers are divided into large, medium and small gaps according to the order in which they contact the aluminum alloy billet. When the hot rolling rollers corresponding to the small gap are lifted, the hot rolling rollers corresponding to the medium gap need to be reduced to the small gap. When the hot rolling roller is lifted, it is necessary to ensure that the last lifted hot rolling roller is already located at the corresponding gap.

[0019] The beneficial effects of the present invention are: 1. The hot rolling equipment of the aluminum alloy composite material places the aluminum alloy billet above the conveying roller and conveys the aluminum alloy billet to the hot rolling roller through the conveying roller for hot rolling. During the hot rolling process, the emulsion is sprayed from the emulsion injection port to the hot rolling roller to wash off the aluminum powder on the surface of the hot rolling roller, and the washed off aluminum powder falls on the top of the aluminum alloy billet. At the same time, the spray sleeve and the emulsion spray hole are tilted to spray the emulsion outward, which can quickly wash the fallen aluminum powder to the outside of the aluminum alloy billet, thereby preventing the blown aluminum powder from sticking to the aluminum alloy billet.

[0020] 2. The hot rolling equipment of the aluminum alloy composite material is provided with a baffle in the emulsion spray pipe to change the direction of part of the water flow, so that the water pressure on the side of the spray sleeve away from the water inlet is the largest, and the spray sleeve and the emulsion spray holes are alternately arranged so that the water pressure on the side of the water inlet of the emulsion spray holes is the largest, so that there is enough power to blow the aluminum powder out to the outside of the aluminum alloy, and avoid the water pressure on the side away from the water inlet becoming smaller and unable to blow the aluminum powder out completely 3. The hot rolling equipment of the aluminum alloy composite material rotates the emulsion spray pipe so that only one side of the emulsion spray hole faces the hot rolling roller. Since the water outlet area of ​​the emulsion spray hole is small, the water pressure remains unchanged, and the impact force of the sprayed emulsion on the hot rolling roller is increased, thereby being able to blow off the aluminum powder adhered to the surface of the hot rolling roller.

[0021] 4. The hot rolling equipment of the aluminum alloy composite material is provided with a telescopic rod because the impact force of the emulsion spray hole is relatively large. The reciprocating extension of the telescopic rod can make the emulsion spray pipe move back and forth, thereby preventing the emulsion spray hole from impacting the same position for a long time, causing annular grooves to appear on the surface of the hot rolling roller.

[0022] 5. The hot rolling equipment of the aluminum alloy composite material is provided with a fixing frame including a fixing ring, the fixing ring is fixedly sleeved on the outer surface of the motor, the outer surface of the emulsion spray pipe is sleeved with limiting rings at both ends, the inner ring of the limiting ring is fixedly installed with a raised ring, the outer surface of the emulsion spray pipe is provided with a groove adapted to the raised ring, the inner ring of the limiting ring is fixedly installed with a spring positioning head, the outer surface of the emulsion spray pipe is provided with a positioning hole engaged with the spring positioning head, the limiting ring is fixedly connected to the top of the fixing ring through a crossbeam, and the water inlet cover is fixedly connected to the crossbeam. The fixing ring crossbeam and the limiting ring can connect the motor and the emulsion spray pipe together so that they can rotate and reciprocate together. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection of the conveying rollers in the present invention; Figure 3 It is a schematic diagram of the connection of the hot rolling rollers in the present invention; Figure 4 It is a schematic diagram of the connection of the fixing plate in the present invention; Figure 5 This is a schematic diagram of the connection of the sliding lifting block in the present invention; Figure 6 It is a schematic diagram of the crossbeam connection in the present invention; Figure 7 This is a schematic diagram of the connection of the emulsion spray pipe in the present invention; Figure 8 It is a cross-sectional view of the end face of the emulsion spray pipe in the present invention; Fig. 9 It is a horizontal cross-sectional view of the emulsion spray pipe in the present invention; Fig.10 It is a schematic diagram of the connection of the water inlet cover in the present invention; Fig.11 It is a vertical cross-sectional view of the emulsion spray pipe in the present invention.

[0024] The symbols in the figure are: 1. Hot rolling roller; 2. Conveying roller; 3. Spraying mechanism; 4. Drainage trough; 5. Lifting sleeve; 6. Power mechanism; 7. Fixed frame; 8. Fixed frame; 9. Emulsion spray pipe; 10. Emulsion spray hole; 11. Dividing plate; 12. Emulsion spray hole; 13. Emulsion injection port; 14. Baffle; 15. Spray sleeve; 16. Motor; 17. Water inlet cover; 18. Flange; 19. Sliding cavity; 20. Sealing gasket; 801. Fixed ring; 802. Limiting ring; 803. Raised ring; 804. Groove; 805. Spring positioning head; 806. Positioning hole; 807. Crossbeam; 808. Fixed plate; 809. Sliding lifting block; 810. Sliding lifting slot; 811. Telescopic rod. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-Figure 11 This application is described in further detail.

[0026] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] The embodiment of the present application discloses a hot rolling equipment for aluminum alloy composite materials, comprising at least three groups of hot rolling rollers 1 symmetrically arranged in an upper and lower direction, conveying rollers 2 are arranged between two adjacent groups of hot rolling rollers 1 and on both sides of the hot rolling rollers 1, spray mechanisms 3 for spraying emulsion are arranged on both sides of the hot rolling rollers 1, drainage grooves 4 are arranged on both sides of the conveying rollers 2, lifting sleeves 5 that can be lifted up and down are arranged on the outer sides of the hot rolling rollers 1 and the conveying rollers 2, a power mechanism 6 for driving the hot rolling rollers 1 and the conveying rollers 2 to rotate is fixedly installed on the outer side of the lifting sleeves 5, a fixed frame 7 is arranged above the conveying rollers 2, the lifting sleeve 5 located at the upper end is fixedly connected to the fixed frame 7, fixed frames 8 are fixedly installed on both sides of the free ends of the lifting sleeves 5, the spray mechanism 3 is located at one end of the fixed frame 8 away from the lifting sleeve 5, the spray mechanism 3 is located on both sides of the hot rolling rollers 1, the spray mechanism 3 comprises an emulsion spray pipe 9, a sealing gasket 20 is fixedly installed in the middle of the emulsion spray pipe 9, and the sealing gasket 20 The emulsion spray pipe 9 is divided into left and right parts, wherein a group of emulsion spray holes 10 are opened on the side away from the hot rolling roller 1, wherein the side close to the hot rolling roller 1 is divided into three parts, upper, middle and lower, by a partition plate 11, a group of emulsion spray holes 12 are opened on the part of the emulsion spray pipe 9 located below the partition plate 11, an emulsion injection port 13 is opened on the part of the emulsion spray pipe 9 located below the partition plate 11, and the inside of the emulsion spray pipe 9 is fixed above the partition plate 11. A baffle 14 is installed to cover the bottom of the liquid inlet part, and the other end of the baffle 14 does not contact the inner wall of the emulsion spray pipe 9. The dividing plate 11 is located below the baffle 14 and is fixedly installed with a spray sleeve 15. The spray sleeve 15 penetrates the emulsion spray pipe 9 downwardly. The spray sleeve 15 is located between adjacent emulsion spray holes 12. A motor 16 is fixedly installed on one side of the fixed frame 8. The emulsion spray pipe 9 is rotatably connected to the fixed frame 8, and the output end of the motor 16 is fixedly connected to the emulsion spray pipe 9.

[0028] In one embodiment, the end of the emulsion spray pipe 9 away from the motor 16 is rotatably connected to a water inlet cover 17, which covers half of the emulsion spray pipe 9 and is fixedly connected to the fixing frame 8. Specifically, the water inlet end of the water inlet cover 17 is a semicircular boss sleeve connected to the water inlet pipe.

[0029] In this embodiment, such an arrangement can ensure that only the emulsion spray pipe 9 on the side close to the hot rolling roller 1 can spray the emulsion.

[0030] In one embodiment, the fixing frame 8 includes a fixing ring 801, which is fixedly sleeved on the outer surface of the motor 16, and the two ends of the outer surface of the emulsion spray pipe 9 are sleeved with a limiting ring 802, and the inner ring of the limiting ring 802 is fixedly installed with a raised ring 803, and the outer surface of the emulsion spray pipe 9 is provided with a groove 804 adapted to the raised ring 803, and the inner ring of the limiting ring 802 is fixedly installed with a spring positioning head 805, and the outer surface of the emulsion spray pipe 9 is provided with a positioning hole 806 engaged with the spring positioning head 805. Such a setting can ensure that the positioning can be performed during rotation to avoid angle errors, and the limiting ring 802 is fixedly connected to the top of the fixing ring 801 through a crossbeam 807, and the water inlet cover 17 is fixedly connected to the crossbeam 807. Specifically, the fixing ring 801, the crossbeam 807 and the limiting ring 802 can connect the motor 16 and the emulsion spray pipe 9 together.

[0031] In this embodiment, such an arrangement can play a supporting role.

[0032] In one embodiment, the fixing frame 8 further includes a fixing plate 808, a sliding hoisting block 809 is fixedly installed on the top of the cross beam 807, a sliding hoisting slot 810 is provided at the bottom of the fixing plate 808, the sliding hoisting block 809 is slidably clamped inside the sliding hoisting slot 810, a telescopic rod 811 is fixedly installed at one end of the fixing plate 808, the telescopic rod 811 is parallel to the cross beam 807, and the free end of the telescopic rod 811 is fixedly connected to the cross beam 807. Specifically, the sliding hoisting block 809 can be fixedly connected to the fixing ring 801 and the limiting ring 802, and the length of the sliding hoisting block 809 is less than the length of the sliding hoisting slot 810, and the cross beam 807 can be reciprocated by the periodic telescopic energy of the telescopic rod 811.

[0033] In this embodiment, the reciprocating cross beam 807 can drive the emulsion spray pipe 9 to move, thereby preventing the spray position from being fixed relative to the hot rolling roller 1 and causing an annular groove to be impacted on the surface of the hot rolling roller 1.

[0034] In one embodiment, a flange 18 is fixedly mounted on one end of the emulsion spray pipe 9 away from the motor 16, and a sliding cavity 19 adapted to the flange 18 is provided inside the water inlet cover 17. Specifically, the flange 18 can slide in the sliding cavity 19.

[0035] In this embodiment, such an arrangement can ensure that the emulsion can always be connected during the reciprocating movement and rotation.

[0036] In one embodiment, the cross-sectional area of ​​the spray sleeve 15 is the same as the area of ​​the emulsion spray hole 12, and the spray sleeve 15 and the emulsion spray hole 12 are arranged to be inclined to the same side. Specifically, the spray sleeve 15 and the emulsion spray hole 12 are arranged alternately, but the spray sleeve 15 and the emulsion spray hole 12 work together to impact the aluminum powder on the surface of the aluminum alloy billet.

[0037] In this embodiment, by providing an inclined spray sleeve 15 and an emulsion spray hole 12, the aluminum powder on the surface of the aluminum alloy billet can be flushed to one side. Since the water pressure is high near the water inlet and low far from the water inlet, a baffle 14 is provided to allow part of the water flow to supply water to the spray sleeve 15 from the side far from the water inlet, so that the spray sleeve 15 with the lowest water pressure can be matched with the emulsion spray hole 10 with the highest water pressure, thereby continuously flushing the aluminum powder to one side.

[0038] In one embodiment, both ends of the sealing gasket 20 on one side close to the emulsion spray hole 10 are convex outward, and the total area of ​​the emulsion spray hole 10 is smaller than the total area of ​​the emulsion spray hole 12. Specifically, the smaller the total area of ​​the emulsion spray hole 10, the greater the energy of the water spray. At the same time, reducing the volume of the cavity connected to the emulsion spray hole 10 can also increase the energy of the sprayed emulsion, thereby effectively flushing the hot rolling roller 1.

[0039] In this embodiment, the area of ​​the emulsion spray hole 10 is reduced to increase the energy of the sprayed water so as to flush the aluminum powder on the surface of the hot rolling roller 1 .

[0040] In one embodiment, the effective telescopic length of the telescopic rod 811 is greater than the distance between two adjacent emulsion spray holes 10. Specifically, the telescopic rod 811 is telescoped to change the spraying position of the emulsion spray hole 10.

[0041] In this embodiment, the hot rolling roller 1 can be cleaned more thoroughly through such an arrangement.

[0042] A hot rolling process for an aluminum alloy composite material comprises the following steps: From the feeding direction, the gap between the upper and lower hot rolling rollers 1 is reduced in sequence and the emulsion is sprayed through the emulsion spray pipe 9. The conveying roller 2 conveys the aluminum alloy billet and passes through the hot rolling roller 1 in sequence. The three groups of hot rolling rollers 1 are lifted up in sequence during the hot rolling process, and the emulsion spray pipe 9 is rotated to spray the emulsion to the hot rolling roller 1 through the emulsion spray hole 10 to remove the surface aluminum powder. The gaps between the three groups of hot rolling rollers 1 are divided into large, medium and small gaps according to the order of contact with the aluminum alloy billet. When the hot rolling roller 1 corresponding to the small gap is lifted, the hot rolling roller 1 corresponding to the medium gap needs to be reduced to a small gap. When the hot rolling roller 1 is lifted, it is necessary to ensure that the last lifted hot rolling roller 1 is already at the corresponding gap. The distance between the hot rolling rollers 1 is adjusted so that the gap between the two hot rolling rollers 1 gradually increases from the initial feeding direction, and the gap between the two largest hot rolling rollers 1 is smaller than the gap between the two smallest hot rolling rollers 1 in the previous hot rolling process. The power mechanism 6 drives the conveying roller 2 to move in the reverse direction, and the aluminum alloy billet that has been hot rolled once passes through the two hot rolling rollers 1 again to repeat the cycle until it is hot rolled to a specified thickness.

[0043] When the embodiment is used, the aluminum alloy billet is placed above the conveying roller 2 and conveyed to the hot rolling roller 1 by the conveying roller 2 for hot rolling. During the hot rolling process, the emulsion is sprayed from the emulsion spray port 13 to the hot rolling roller 1 to wash off the aluminum powder on the surface of the hot rolling roller 1. The washed off aluminum powder falls above the aluminum alloy billet. At the same time, the spray sleeve 15 and the emulsion spray hole 12 are tilted to spray the emulsion outward, which can quickly wash the fallen aluminum powder to the outside of the aluminum alloy billet, thereby preventing the blown off aluminum powder from adhering to the aluminum alloy billet. In particular, a baffle 14 is provided in the emulsion spray pipe 9 to change the direction of part of the water flow, so that the water pressure on the side of the spray sleeve 15 away from the water inlet is the largest, and the spray sleeve 15 and the emulsion spray hole 12 are alternately arranged so that the water pressure on the side of the water inlet of the emulsion spray hole 12 is the largest, so that there is enough power to blow the aluminum powder out to the outside of the aluminum alloy, and avoid the water pressure on the side away from the water inlet being reduced and unable to blow the aluminum powder out completely; For some aluminum powder that has been adhered to the hot rolling roller 1, the emulsion spray pipe 9 is rotated so that only one side of the emulsion spray hole 10 is facing the hot rolling roller 1. Since the water outlet area of ​​the emulsion spray hole 10 is small, the water pressure remains unchanged, and the impact force of the sprayed emulsion on the hot rolling roller 1 is increased, thereby being able to blow off the aluminum powder adhered to the surface of the hot rolling roller 1.

[0044] Since the impact force of the emulsion spray hole 10 is relatively large, a telescopic rod 811 is provided. The reciprocating extension of the telescopic rod 811 enables the emulsion spray pipe 9 to move back and forth, thereby preventing the emulsion spray hole 10 from impacting the same position for a long time, resulting in an annular groove on the surface of the hot rolling roller 1.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hot rolling equipment for aluminum alloy composite materials, comprising at least three groups of hot rolling rollers (1) symmetrically arranged in an upper and lower direction, conveying rollers (2) are arranged between two adjacent groups of hot rolling rollers (1) and on both sides of the hot rolling rollers (1), spraying mechanisms (3) for spraying emulsion are arranged on both sides of the hot rolling rollers (1), and drainage grooves (4) are arranged on both sides of the conveying rollers (2), characterized in that: The outer sides of the hot rolling roller (1) and the conveying roller (2) are both provided with lifting sleeves (5) that can be lifted up and down, and a power mechanism (6) that drives the hot rolling roller (1) and the conveying roller (2) to rotate is fixedly installed on the outer sides of the lifting sleeves (5), and a fixing frame (7) is provided above the conveying roller (2), and the lifting sleeve (5) at the upper end is fixedly connected to the fixing frame (7); A fixing frame (8) is fixedly mounted on both sides of the free end of the lifting sleeve (5), the spray mechanism (3) is located at one end of the fixing frame (8) away from the lifting sleeve (5), and the spray mechanism (3) is located on both sides of the hot rolling roller (1); The spray mechanism (3) comprises an emulsion spray pipe (9), a sealing gasket (20) being fixedly mounted in the middle of the emulsion spray pipe (9), the sealing gasket (20) dividing the emulsion spray pipe (9) into left and right parts, wherein a group of emulsion spray holes (10) are provided on the side away from the hot rolling roller (1), wherein a side close to the hot rolling roller (1) is divided into three parts, namely, an upper, middle and lower part, by a dividing plate (11), a group of emulsion spray holes (12) are provided on the part of the emulsion spray pipe (9) located below the dividing plate (11), and the emulsion spray pipe (9) is provided with a group of emulsion spray holes (12). An emulsion injection port (13) is provided at a portion of the tube (9) located below the dividing plate (11); a baffle (14) covering the lower portion of the liquid inlet is fixedly installed inside the emulsion spray tube (9) located above the dividing plate (11); the other end of the baffle (14) does not contact the inner wall of the emulsion spray tube (9); a spray sleeve (15) is fixedly installed below the baffle (14) on the dividing plate (11); the spray sleeve (15) penetrates downwardly through the emulsion spray tube (9); and the spray sleeve (15) is located between adjacent emulsion spray holes (12); A motor (16) is fixedly mounted on one side of the fixing frame (8), the emulsion spray pipe (9) is rotatably connected to the fixing frame (8), and the output end of the motor (16) is fixedly connected to the emulsion spray pipe (9).

2. The hot rolling equipment for aluminum alloy composite material according to claim 1, characterized in that: One end of the emulsion spray pipe (9) away from the motor (16) is rotatably connected to a water inlet cover (17), the water inlet cover (17) covers half of the emulsion spray pipe (9), and the water inlet cover (17) is fixedly connected to the fixing frame (8).

3. The hot rolling equipment for aluminum alloy composite material according to claim 2, characterized in that: The fixing frame (8) comprises a fixing ring (801), the fixing ring (801) being fixedly sleeved on the outer surface of the motor (16), limiting rings (802) being sleeved on both ends of the outer surface of the emulsion spray pipe (9), a raised ring (803) being fixedly mounted on the inner ring of the limiting ring (802), a groove (804) matching the raised ring (803) being provided on the outer surface of the emulsion spray pipe (9), a spring positioning head (805) being fixedly mounted on the inner ring of the limiting ring (802), a positioning hole (806) engaging with the spring positioning head (805) being provided on the outer surface of the emulsion spray pipe (9), the limiting ring (802) and the top of the fixing ring (801) being fixedly connected via a crossbeam (807), and the water inlet cover (17) being fixedly connected to the crossbeam (807).

4. The hot rolling equipment for aluminum alloy composite material according to claim 3, characterized in that: The fixing frame (8) further comprises a fixing plate (808), a sliding lifting block (809) is fixedly mounted on the top of the cross beam (807), a sliding lifting groove (810) is provided at the bottom of the fixing plate (808), the sliding lifting block (809) is slidably engaged in the interior of the sliding lifting groove (810), a telescopic rod (811) is fixedly mounted on one end of the fixing plate (808), the telescopic rod (811) is parallel to the cross beam (807), and the free end of the telescopic rod (811) is fixedly connected to the cross beam (807).

5. The hot rolling equipment for aluminum alloy composite material according to claim 4, characterized in that: A flange (18) is fixedly mounted on one end of the emulsion spray pipe (9) away from the motor (16), and a sliding cavity (19) adapted to the flange (18) is provided inside the water inlet cover (17).

6. A hot rolling equipment for aluminum alloy composite materials according to any one of claims 1 to 5, characterized in that: The cross-sectional area of ​​the spray sleeve (15) is the same as the area of ​​the emulsion spray hole (12), and the spray sleeve (15) and the emulsion spray hole (12) are arranged to be inclined toward the same side.

7. The hot rolling equipment for aluminum alloy composite material according to claim 6, characterized in that: Both ends of the sealing gasket (20) on one side close to the emulsion spray hole (10) are bulged outwards, and the total area of ​​the emulsion spray hole (10) is smaller than the total area of ​​the emulsion spray hole (12).

8. The hot rolling equipment for aluminum alloy composite material according to claim 7, characterized in that: The effective telescopic length of the telescopic rod (811) is greater than the distance between two adjacent emulsion spray holes (10).

9. The hot rolling process of the aluminum alloy composite material according to claim 1, characterized in that: The following steps are involved: S1. The gap between the upper and lower hot rolling rollers (1) is reduced in sequence from the feeding direction and the emulsion is sprayed through the emulsion spray pipe (9); S2. The conveying roller (2) conveys the aluminum alloy billet and sequentially passes through the hot rolling roller (1); S3. The three sets of hot rolling rollers (1) are lifted up in sequence during the hot rolling process, and the emulsion spray pipe (9) is rotated to spray the emulsion onto the hot rolling rollers (1) through the emulsion spray hole (10) to remove the aluminum powder on the surface; S4. adjusting the distance between the hot rolling rollers (1) so that the gap between the two hot rolling rollers (1) gradually increases from the initial feeding direction, and the gap between the two largest hot rolling rollers (1) is smaller than the gap between the two smallest hot rolling rollers (1) in S1; S5. The power mechanism (6) drives the conveying roller (2) to move in the reverse direction, so that the aluminum alloy billet, which has been hot-rolled once, passes through the two hot-rolling rollers (1) again.

10. The hot rolling process of the aluminum alloy composite material according to claim 9, characterized in that: S3 also includes: The gaps between the three groups of hot rolling rollers (1) are divided into three types of gaps: large, medium and small according to the order in which they come into contact with the aluminum alloy billet, and when the hot rolling rollers (1) corresponding to the small gap are lifted, the hot rolling rollers (1) corresponding to the medium gap need to be reduced to a small gap; When the hot rolling roller (1) is lifted, it is necessary to ensure that the last lifted hot rolling roller (1) is already located at the corresponding gap.

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