CN112760635A - Novel hot-pressing device and process for single crystal alumina powder coating - Google Patents
Novel hot-pressing device and process for single crystal alumina powder coating Download PDFInfo
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- CN112760635A CN112760635A CN202110193069.0A CN202110193069A CN112760635A CN 112760635 A CN112760635 A CN 112760635A CN 202110193069 A CN202110193069 A CN 202110193069A CN 112760635 A CN112760635 A CN 112760635A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
Abstract
The invention discloses a novel hot-pressing device and a process for a monocrystalline alumina powder coating, which comprises a feeding winch, a carbon silicon rod heating pipe and a fixed transverse plate, wherein the hot-pressing device and the process utilize the high ductility and the expansion and contraction properties of metal, adopt a hot-pressing technology to press monocrystalline sapphire powder into the surface of the metal, and are matched with a first guide shaft, a second guide shaft and a third guide shaft, so that the difficulty in angular deflection of the metal plate in the advancing process is reduced, a material spreading brush is driven to rotate by the rotation end of a first motor, the spreading thickness of the monocrystalline sapphire powder can be controlled, the spreading uniformity is improved, the powder can be inhibited from being lifted and scattered by the arrangement of a blocking cover, the pollution to the outside is reduced, an electric cylinder and a second motor are started by an external switch, a U-shaped plate is driven by the extension end of the electric cylinder to drive a first roller to move downwards, a second roller is driven by the second motor to rotate the roller, meanwhile, the metal plate is rolled through the matching of the second rolling roller.
Description
Technical Field
The invention relates to the field of coating material application, in particular to a novel hot-pressing device and a novel hot-pressing process for a single crystal alumina powder coating.
Background
With the rapid development of the industrial production of single crystal sapphire, a large amount of sapphire single crystal powder is produced during the sapphire processing (cutting, grinding). Since it is not used, it is often disposed of as solid waste, creating a large amount of waste. And because the physical and chemical properties are very stable, the material can not be degraded or is not easy to chemically refine, the environmental protection recovery and treatment are very difficult, and the pollution is caused to soil and underground water. The sapphire powder is single crystal alpha-phase alumina, has high purity, uniform and fine particles, is colorless and transparent, is insulating, corrosion-resistant, acid-base resistant, high temperature resistant (the melting point is 2050 ℃), thermal shock resistant and stable in property, and can be used as an excellent coating material. Can be widely applied to metal surface coatings, and improves the physical and chemical properties of metal, such as insulation, corrosion resistance and the like. Meanwhile, waste can be changed into valuable, income is created for enterprises, and the problem of environmental protection and recovery is solved.
Because the physical and chemical properties of the single crystal sapphire powder are very stable, the single crystal sapphire powder does not diffuse with metal, and the chemical spraying, electronic spraying and other technologies cannot be effectively applied, a hot pressing device for solving the problem of the coating of the single crystal sapphire powder is needed.
Disclosure of Invention
The invention aims to provide a novel hot-pressing device and a novel hot-pressing process for a single crystal alumina powder coating, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a novel hot pressing device for a monocrystalline aluminum oxide powder coating comprises a bottom plate, wherein two side plates are symmetrically and fixedly connected to the top of the bottom plate, a second motor is fixedly mounted on the side wall of one of the side plates, a second supporting plate is fixedly connected to the tops of the two side plates, a fixed transverse plate is fixedly connected to the tops of the two second supporting plates, an electric cylinder is fixedly mounted at the bottom of the fixed transverse plate, a U-shaped plate is fixedly connected to the telescopic end of the electric cylinder, a first rotating shaft is rotatably connected to the inner side of the U-shaped plate, a first rolling roller is fixedly sleeved on the outer side of the first rotating shaft, a second rotating shaft is rotatably connected to the inner sides of the two side plates, a second rolling roller is fixedly sleeved on the outer side of the second rotating shaft, one end of the second rotating shaft penetrates through the side wall of one of the side, the utility model discloses a heating device, including bottom plate, curb plate, standing groove, carbon silicon rod heating pipe, thermocouple fixed mounting, the one side outside of bottom plate is provided with the feed hoist engine, the opposite side outside of bottom plate is provided with the collection hoist engine, two the common fixedly connected with two sets of mechanisms that generate heat in the inboard of curb plate, the mechanism that generates heat includes thermocouple, standing groove and carbon silicon rod heating pipe, carbon silicon rod heating pipe evenly is provided with a plurality of, carbon silicon rod heating pipe fixed mounting is in the inboard of standing groove, thermocouple fixed mounting is in the inboard of standing groove, two the common fixedly connected with heat preservation groove in the outside of the standing groove in the mechanism.
As a further scheme of the invention: two the inboard of curb plate is rotated jointly and is connected with four second guiding axles, four all be provided with first guiding axle directly over the second guiding axle, be provided with the clearance between first guiding axle and the second guiding axle, the both ends correspondence of first guiding axle is rotated with the inboard of two curb plates and is connected, two the common fixedly connected with in top of curb plate blocks the cover, the inboard of blocking the cover has set gradually three stone mechanism from left to right, stone mechanism includes first motor, connecting rod and stone brush, the inboard top fixed connection of connecting rod top and block the cover, connecting rod bottom fixed mounting has first motor, the rotation end fixedly connected with stone brush of first motor, the stone brush is the level setting.
As a still further scheme of the invention: and a feeding mechanism is fixedly connected between the two first supporting plates.
As a still further scheme of the invention: the first rolling roller is arranged right above the second rolling roller.
As a still further scheme of the invention: the heat insulation and preservation groove is made of alumina fiber felt.
As a still further scheme of the invention: the collecting winch, the heating device, the thermocouple, the electric cylinder, the first motor, the second motor and the carbon silicon rod heating pipe are all electrically connected with the external switch through wires.
A novel hot pressing process for a monocrystalline alumina powder coating comprises the following steps:
the method comprises the following steps: preparing a roll of stainless steel metal plate with the thickness of 1mm, winding the stainless steel metal plate on a winding drum of a feeding winch, penetrating one end of the metal plate between a first guide shaft and a second guide shaft, and simultaneously penetrating between a first rolling roller and a second rolling roller, and connecting one end of the stainless steel metal plate on the winding drum of a collecting winch;
step two: feeding is carried out through a feeding mechanism, sapphire powder is spread on the upper surface of the stainless steel metal plate, traction transmission is carried out through a feeding winch and a collecting winch by starting the feeding winch and the collecting winch, and the transmission speed is 10 mm/h-200 mm/h;
step three: the distance between the material spreading brush and the stainless steel metal plate is the spreading thickness of the sapphire powder (the distance is 0.1-1 mm), the rotating end of the first motor drives the brush to rotate in the horizontal direction (the rotating speed is 1-5 r/min) by starting the first motor, so that the sapphire powder is uniformly spread on the whole plate, and meanwhile, the separation cover can prevent the sapphire powder from being lifted and scattered by mechanical vibration and indoor air flow;
step four: under a stainless steel metal plate, in a process heating area range, an alumina fiber felt is used for manufacturing a heat insulation layer, two thermocouples in two groups of heating mechanisms are used for independently controlling the temperature (one group is low and medium temperature, and the other group is medium and high temperature), and a carbon silicon rod heating pipe is used for heating, so that the stainless steel metal plate is gradually heated, the thermal deformation of the stainless steel metal plate caused by sudden high temperature is avoided, and in the process of heating the stainless steel metal plate, the first group is heated to 600 ℃, and the second group is heated to 900 ℃;
step five: stainless steel sheet metal carries out the roll-in cooperation through first roller and second roller, and pressure is 500MPa, and after the roll-in, in the stainless steel sheet metal can be inseparable inlaying of single crystal sapphire powder, along with stainless steel sheet metal progressively cools off, the volume shrinkage, the embedding of single crystal sapphire powder can become inseparabler firm, prepares single crystal sapphire powder cladding process at sheet metal surface and finishes.
Compared with the prior art, the invention has the beneficial effects that:
1. through the cooperation setting of first guiding axle, second guiding axle and third wire axle, reduce sheet metal and be difficult for taking place the angle deflection at the in-process of marcing, march more stably, rotate the rotation end through first motor and drive the stone brush rotation of spreading, can control spreading of monocrystalline sapphire stone powder and spill the thickness and improve and spread and spill the homogeneity, through the setting of separation cover, can restrain the powder and raise and scatter, reduce to cause the pollution to outside.
Drawings
FIG. 1 is a schematic structural diagram of a new hot-pressing device and process for a single crystal alumina powder coating.
FIG. 2 is a partial cross-sectional view of a new single crystal alumina powder coating hot pressing apparatus and process.
FIG. 3 is a schematic structural diagram of a novel single crystal alumina powder coating hot-pressing device and a spreading mechanism in the process.
Shown in the figure: the feeding winch 1, the first guide shaft 2, the collecting winch 3, the feeding mechanism 4, the spreading mechanism 5, the heat insulation and preservation groove 6, the heating device 7, the thermocouple 8, the first roller pressing roller 9, the second guide shaft 10, the bottom plate 11, the side plate 12, the second roller pressing roller 13, the blocking cover 14, the first supporting plate 15, the electric cylinder 16, the U-shaped plate 17, the first rotating shaft 18, the second rotating shaft 19, the first motor 20, the connecting rod 21, the spreading hairbrush 22, the heating mechanism 23, the placing groove 24, the second supporting plate 25, the second motor 26, the carbon silicon rod heating pipe 27, the third guide shaft 28 and the fixed transverse plate 29.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the present invention, a novel hot pressing apparatus for a single crystal alumina powder coating includes a bottom plate 11, two side plates 12 are symmetrically and fixedly connected to a top of the bottom plate 11, a second motor 26 is fixedly installed on a side wall of one of the side plates 12, second supporting plates 25 are fixedly connected to tops of the two side plates 12, a fixed transverse plate 29 is fixedly connected to tops of the two second supporting plates 25, an electric cylinder 16 is fixedly installed at a bottom of the fixed transverse plate 29, a U-shaped plate 17 is fixedly connected to a telescopic end of the electric cylinder 16, a first rotating shaft 18 is rotatably connected to an inner side of the U-shaped plate 17, a first rolling roller 9 is fixedly installed on an outer side of the first rotating shaft 18, a second rotating shaft 19 is rotatably connected to inner sides of the two side plates 12, a second rolling roller 13 is fixedly installed on an outer, one end of the second rotating shaft 19 penetrates through the side wall of one of the side plates 12 and is fixedly connected with the rotating end of a second motor 26, the first rolling roller 9 is arranged right above the second rolling roller 13, a feeding winch 1 is arranged outside one side of the bottom plate 11, a collecting winch 3 is arranged outside the other side of the bottom plate 11, four second guide shafts 10 are jointly and rotatably connected with the inner sides of the two side plates 12, a first guide shaft 2 is arranged right above the four second guide shafts 10, a gap for stainless steel plates to pass through is arranged between the first guide shaft 2 and the second guide shaft 10, two ends of the first guide shaft 2 are correspondingly and rotatably connected with the inner sides of the two side plates 12, a blocking cover 14 is jointly and fixedly connected with the top of the two side plates 12, and three paving mechanisms 5 are sequentially arranged on the inner side of the blocking cover 14 from left to right, the spreading mechanism 5 comprises a first motor 20, a connecting rod 21 and a spreading brush 22, the top of the connecting rod 21 is fixedly connected with the top of the inner side of the blocking cover 14, the bottom end of the connecting rod 21 is fixedly provided with the first motor 20, the rotating end of the first motor 20 is fixedly connected with the spreading brush 22, the spreading brush 22 is horizontally arranged, two groups of heating mechanisms 23 are fixedly connected with the inner sides of the side plates 12 together, each heating mechanism 23 comprises a thermocouple 8, a placing groove 24 and a carbon silicon rod heating pipe 27, the carbon silicon rod heating pipes 27 are uniformly provided with a plurality of heating mechanisms, the carbon silicon rod heating pipes 27 are fixedly arranged on the inner sides of the placing grooves 24, the thermocouple 8 is fixedly arranged on the inner sides of the placing grooves 24, the outer sides of the placing grooves 24 in the two heating mechanisms 23 are fixedly connected with heat insulation grooves 6 together, and the heat insulation grooves 6 are made of alumina fiber felts, the heating elements are prevented from escaping heating energy, the heating efficiency is improved, surrounding electromechanical devices are protected, the carbon silicon rod heating pipes in the two groups of heating mechanisms 23 can also be made of heating elements made of other materials, such as nickel-chromium wires, silicon-molybdenum rods and the like, the heating temperature and the using environment are determined according to the process requirements, a metal plate can be heated to 300-1500 ℃ according to the process requirements, the tops of the two side plates 12 are fixedly connected with first supporting plates 15, a feeding mechanism 4 is fixedly connected between the two first supporting plates 15 together, the feeding mechanism 4 has a knocking function and a weighing function and is provided with a screen, the knocking frequency and the consumption of sapphire single crystal powder in a storage tank in unit time can be controlled, the screen can control the coarse and fine particle size of the powder and the paving uniformity knocking speed to be 0.2-5 times/s, and the weighing control is combined to accurately control the spraying amount of the, meanwhile, the collection winch 3, the heating device 7, the thermocouple 8, the electric cylinder 16, the first motor 20, the second motor 26 and the carbon silicon rod heating pipe 27 are all electrically connected with an external switch through wires by matching with a screen (200-1000 meshes) to uniformly fall on a metal plate.
A novel hot pressing process for a monocrystalline alumina powder coating comprises the following steps:
the method comprises the following steps: preparing a roll of stainless steel metal plate with the thickness of 1mm, winding the stainless steel metal plate on a winding drum of a feeding winch 1, penetrating one end of the metal plate between a first guide shaft 2 and a second guide shaft 10, and simultaneously penetrating between a first rolling roller 9 and a second rolling roller 13, and connecting one end of the stainless steel metal plate on the winding drum of a collecting winch 3;
step two: the sapphire powder is spread on the upper surface of the stainless steel metal plate by feeding through a feeding mechanism 4, and traction transmission is carried out by the feeding winch 1 and the collecting winch 3 by starting the feeding winch 1 and the collecting winch 3, wherein the transmission speed is 10 mm/h-200 mm/h;
step three: the distance between the material spreading brush 22 and the stainless steel metal plate is the spreading thickness of the sapphire powder (the distance is 0.1 mm-1 mm), the brush can be driven by the rotating end of the first motor 20 to rotate in the horizontal direction (the rotating speed is 1 r/min-5 r/min) by starting the first motor 20, so that the sapphire powder is uniformly spread on the whole plate, and meanwhile, the separation cover 14 can prevent the sapphire powder from being lifted and scattered by mechanical vibration and indoor air flow;
step four: in the process heating area range below the stainless steel metal plate, an alumina fiber felt is used for manufacturing a heat insulation layer, two thermocouples 8 in two groups of heating mechanisms 23 are independently controlled in temperature (one group is low and medium temperature, and the other group is medium and high temperature), a carbon silicon rod heating pipe 27 is used for heating, so that the stainless steel metal plate is gradually heated, the thermal deformation of the stainless steel metal plate caused by sudden high temperature is avoided, and in the process of heating the stainless steel metal plate, the first group is heated to 600 ℃, and the second group is heated to 900 ℃;
step five: stainless steel sheet metal carries out the roll-in cooperation through first roller press 9 and second roller press 13, and pressure is 500MPa, and after the roll-in, in the stainless steel sheet metal can be inseparable inlaying of single crystal sapphire powder, along with stainless steel sheet metal progressively cools off, the volume shrinkage, the embedding of single crystal sapphire powder can become inseparabler firm, prepares single crystal sapphire powder cladding process at sheet metal surface and finishes.
The working principle of the invention is as follows:
utilize the high ductility of metal and expend with heat and contract with cold nature, adopt the hot extrusion technique, extrude into the metal surface with single crystal sapphire powder, after the metal cools down, sapphire single crystal powder closely inlays among the metal, the cooperation setting of first guiding axle 2, second guiding axle 10 and third wire shaft 28, it is difficult for taking place the angle deflection to reduce sheet metal in the in-process of marcing, it is more stable to march, rotate through the rotation end of first motor 20 and drive stone brush 22 and rotate, can control the spreading thickness of single crystal sapphire powder and improve spreading uniformity, through the setting of separation cover 14, can restrain the powder and raise and scatter, reduce and cause the pollution to the outside, start electronic jar 16 and second motor 26 through external switch, it makes first roll-pressing roller 9 move downwards to drive U-shaped plate 17 through the extension of electronic jar 16, drive second roll-pressing roller 13 through second motor 26 and rotate, meanwhile, the metal plate is rolled through the matching of the second rolling roller 13.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A novel hot-pressing device for a monocrystalline alumina powder coating comprises a base plate (11), and is characterized in that: two curb plates (12) of bottom plate (11) top symmetry fixedly connected with, one of them the lateral wall fixed mounting of curb plate (12) has second motor (26), two equal fixedly connected with second backup pad (25) in top of curb plate (12), two the common fixedly connected with fixed diaphragm (29) in top of second backup pad (25), fixed diaphragm (29) bottom fixed mounting has electronic jar (16), the flexible end fixedly connected with U-shaped plate (17) of electronic jar (16), the inboard rotation of U-shaped plate (17) is connected with first pivot (18), the fixed cover in the outside of first pivot (18) is equipped with first roll compression roller (9), two the inboard of curb plate (12) rotates jointly and is connected with second pivot (19), the outside fixed cover of second pivot (19) is equipped with second roll compression roller (13), one end of the second rotating shaft (19) penetrates through the side wall of one of the side plates (12) and then is fixedly connected with the rotating end of a second motor (26), a feeding winch (1) is arranged outside one side of the bottom plate (11), a collecting winch (3) is arranged outside the other side of the bottom plate (11), two groups of heating mechanisms (23) are fixedly connected to the inner sides of the two side plates (12) together, each heating mechanism (23) comprises a thermocouple (8), a placing groove (24) and a carbon silicon rod heating pipe (27), the carbon silicon rod heating pipes (27) are uniformly provided with a plurality of carbon silicon rod heating pipes (27), the carbon silicon rod heating pipes (27) are fixedly installed on the inner sides of the placing groove (24), the thermocouple (8) is fixedly installed on the inner sides of the placing groove (24), and the outer sides of the placing grooves (24) in the two heating mechanisms (23) are fixedly connected with a heat insulation groove (, and the tops of the two side plates (12) are fixedly connected with first supporting plates (15).
2. The new hot pressing apparatus for single crystal alumina powder coating according to claim 1, wherein: two the inboard of curb plate (12) is rotated jointly and is connected with four second guiding axle (10), four all be provided with first guiding axle (2) directly over second guiding axle (10), be provided with the clearance between first guiding axle (2) and second guiding axle (10), the both ends of first guiding axle (2) correspond to rotate with the inboard of two curb plates (12) and are connected, two the common fixedly connected with in top of curb plate (12) separates cover (14), the inboard of separating cover (14) has set gradually three stone mechanism (5) from left to right, stone mechanism (5) include first motor (20), connecting rod (21) and stone brush (22), the inboard top fixed connection of connecting rod (21) top and separation cover (14), connecting rod (21) bottom fixed mounting has first motor (20), the rotating end of the first motor (20) is fixedly connected with a paving brush (22), and the paving brush (22) is horizontally arranged.
3. The new hot pressing apparatus for single crystal alumina powder coating according to claim 1, wherein: a feeding mechanism (4) is fixedly connected between the two first supporting plates (15).
4. The new hot pressing apparatus for single crystal alumina powder coating according to claim 1, wherein: the first rolling roller (9) is arranged right above the second rolling roller (13).
5. The new hot pressing apparatus for single crystal alumina powder coating according to claim 1, wherein: the heat insulation and preservation tank (6) is made of alumina fiber felt.
6. The new hot pressing apparatus for single crystal alumina powder coating according to claim 1, wherein: the collecting winch (3), the heating device (7), the thermocouple (8), the electric cylinder (16), the first motor (20), the second motor (26) and the carbon silicon rod heating pipe (27) are all electrically connected with an external switch through wires.
7. The novel single crystal alumina powder coating hot pressing process of claim 1, wherein: the method comprises the following steps:
the method comprises the following steps: preparing a roll of stainless steel metal plate with the thickness of 1mm, winding the stainless steel metal plate on a winding drum of a feeding winch (1), penetrating one end of the metal plate between a first guide shaft (2) and a second guide shaft (10) and between a first rolling roller (9) and a second rolling roller (13), and connecting one end of the stainless steel metal plate on the winding drum of a collecting winch (3);
step two: sapphire powder is spread on the upper surface of the stainless steel metal plate by feeding through the feeding mechanism (4), and traction transmission is carried out by the feeding winch (1) and the collecting winch (3) by starting the feeding winch (1) and the collecting winch, wherein the transmission speed is 10-200 mm/h;
step three: the distance between the material spreading brush 22 and the stainless steel metal plate is the spreading thickness of the sapphire powder (the distance is 0.1 mm-1 mm), the brush can be driven to rotate in the horizontal direction (the rotation speed is 1 r/min-5 r/min) through the rotation end of the first motor (20) by starting the first motor (20), so that the sapphire powder is uniformly spread on the whole plate, and meanwhile, the separation cover (14) can prevent the sapphire powder from being lifted and scattered by mechanical vibration and indoor air flow;
step four: in the technical heating area range below a stainless steel metal plate, an alumina fiber felt is used for manufacturing a heat insulation layer, two thermocouples (8) in two groups of heating mechanisms (23) are independently controlled in temperature (one group is low and medium temperature, and the other group is medium and high temperature), a carbon silicon rod heating pipe (27) is used for heating, so that the stainless steel metal plate is gradually heated, the stainless steel metal plate is prevented from being subjected to thermal deformation due to sudden high temperature, the first group is heated to 600 ℃, and the second group is heated to 900 ℃ in the process of heating the stainless steel metal plate;
step five: stainless steel sheet metal carries out the roll-in cooperation through first roll-in roller (9) and second roll-in roller (13), and pressure is 500MPa, and after the roll-in, in the stainless steel sheet metal can be inseparable inlaying of single crystal sapphire powder, along with stainless steel sheet metal progressively cools off, the volume shrinkage, the embedding of single crystal sapphire powder can become inseparabler firm, prepares single crystal sapphire powder cladding process at sheet metal surface and finishes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023002027A1 (en) | 2023-05-19 | 2024-01-18 | Mercedes-Benz Group AG | Method for producing a metal-ceramic composite component and the metal-ceramic composite component |
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