CN214864969U - Heating equipment for repairing inorganic phosphate Al coating - Google Patents
Heating equipment for repairing inorganic phosphate Al coating Download PDFInfo
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- CN214864969U CN214864969U CN202120105707.4U CN202120105707U CN214864969U CN 214864969 U CN214864969 U CN 214864969U CN 202120105707 U CN202120105707 U CN 202120105707U CN 214864969 U CN214864969 U CN 214864969U
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Abstract
The utility model belongs to coating surface treatment equipment field specifically discloses a firing equipment convenient to carry out heating solidification to the local repair coating of inorganic phosphate Al coating. The heating equipment for repairing the inorganic phosphate Al coating comprises a low-temperature hot air device and a high-temperature heating device. The heating equipment can firstly carry out low-temperature hot air heating on the local repair coating of the inorganic phosphate Al coating through the low-temperature hot air device, and can carry out high-temperature heat radiation heating on the local repair coating of the inorganic phosphate Al coating through the high-temperature heating device, so that the effective curing of the local repair coating is finally realized; the integral disassembly and assembly of the workpiece caused by local defects are avoided, and time and labor cost are saved; meanwhile, the integral heating of the workpiece is avoided, the energy consumption is reduced, and the cost is further saved; in addition, the heating equipment is convenient to operate on the equipment installation site, and is particularly suitable for heating and curing the local repair coating of the large-scale part.
Description
Technical Field
The utility model belongs to coating surface treatment equipment field, concretely relates to inorganic phosphate Al coating is restoreed and is used firing equipment.
Background
The inorganic phosphate Al coating usually comprises a bottom layer and a surface layer, wherein the bottom layer is a sacrificial anode coating and has better electrochemical protection capability, and the surface layer mainly plays a hole sealing and blocking role and can further improve the erosion resistance and the corrosion resistance of the coating. The coating can be used for protecting components and parts such as stainless steel, low alloy steel, high-strength steel, aluminum alloy and the like, has better thermal stability and higher adhesive force, and is widely applied to the corrosion-resistant and wear-resistant industries of aviation, gas turbines and air blowers.
In the preparation of the inorganic phosphate Al coating, the coating needs to be cured at a high temperature of 300-350 ℃, so that the preparation of the coating usually needs professional heating equipment, such as: curing oven equipment; particularly, when the coating is repaired or treated for local defects, if the heating and curing process is improper, the defects of poor local coating bonding force, poor conductivity, high roughness and the like are easily caused, and the overall corrosion resistance of the coating is finally influenced. In addition, local defects of the coating occur on the equipment installation site, and if the local defects cannot be repaired on site, a large amount of time for assembling and disassembling the workpiece is wasted, and time and labor are wasted; however, the existing professional heating equipment can only heat the whole coating part, and is not suitable for heating and curing the local repair coating of the inorganic phosphate Al coating, particularly for local heating of the coating on the equipment installation site.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a heating equipment that is convenient for carry out the heating solidification to the local repair coating of inorganic phosphate Al coating.
The utility model provides a technical scheme that its technical problem adopted is: the heating equipment for repairing the inorganic phosphate Al coating comprises a low-temperature hot air device and a high-temperature heating device; the low-temperature hot air device comprises a protective cover with an air outlet, a fan arranged in the protective cover and with an air supply direction facing the air outlet, and a first heating element arranged in the protective cover and positioned between the fan and the air outlet; the high-temperature heating device is a heat radiation heater, and the rated heating temperature of the high-temperature heating device is higher than that of the low-temperature hot air device.
Further, the low-temperature hot air device further comprises a first temperature sensor which is arranged in the protective cover and is positioned between the first heating element and the air outlet.
Further, the rated heating temperature of the low-temperature hot air device is not higher than 100 ℃.
Further, the high-temperature heating device is a crawler-type heater, and comprises a heating crawler and a controller, wherein the controller is electrically connected with the heating crawler through a lead.
Further, the heating track includes a ceramic coated second heating element.
Further, a second temperature sensor electrically connected with the controller is arranged on the heating crawler.
The utility model has the advantages that: the heating equipment can firstly carry out low-temperature hot air heating on the local repair coating of the inorganic phosphate Al coating through the low-temperature hot air device, and can carry out high-temperature heat radiation heating on the local repair coating of the inorganic phosphate Al coating through the high-temperature heating device, so that the effective curing of the local repair coating is finally realized; the integral disassembly and assembly of the workpiece caused by local defects are avoided, and time and labor cost are saved; meanwhile, the integral heating of the workpiece is avoided, the energy consumption is reduced, and the cost is further saved; in addition, the heating equipment is convenient to operate on the equipment installation site, and is particularly suitable for heating and curing the local repair coating of the large-scale part.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
labeled as: the air conditioner comprises a protective cover 1, a fan 2, a first heating element 3, an air outlet 4, a first temperature sensor 5, a heating crawler 6, a lead 7 and a controller 8.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, the heating device for repairing the inorganic phosphate Al coating comprises a low-temperature hot air device and a high-temperature heating device; the low-temperature hot air device comprises a protective cover 1 with an air outlet 4, a fan 2 which is arranged in the protective cover 1 and the air supply direction of which faces the air outlet 4, and a first heating element 3 which is arranged in the protective cover 1 and is positioned between the fan 2 and the air outlet 4; the high-temperature heating device is a heat radiation heater, and the rated heating temperature of the high-temperature heating device is higher than that of the low-temperature hot air device.
The heating device is used for heating and curing the local repair coating of the inorganic phosphate Al coating, and comprises the following two stages: in the first stage, hot air is blown out by a low-temperature hot air device to heat and cure the local repair coating, the heating temperature in the first stage is 60-80 ℃, and the curing time is 60-90 min; and in the second stage, the high-temperature heating device emits heat radiation to heat and cure the local repair coating, the heating temperature in the stage is 300-350 ℃, and the curing time is 1-2 hours. In order to ensure the curing effect, the temperature rise rate of the heating process of the high-temperature heating device is preferably controlled to be less than 10 ℃/min in the second stage.
Wherein, the low temperature of the low temperature hot air device is relative to the high temperature of the high temperature heating device, and the rated heating temperature of the low temperature hot air device is generally not higher than 100 ℃; the rated heating temperature refers to the heating temperature generated when the low-temperature hot air device or the high-temperature heating device works at rated power; the low-temperature hot air device mainly forms hot air after air flow generated by the fan 2 is heated by the first heating element 3 and then is blown out from the air outlet 4 to heat the local repair coating, the heating is uniform, and the air outlet volume is adjustable.
In order to monitor the heating temperature of the low-temperature hot air device in real time to improve the effectiveness of heating the local repair coating, as shown in fig. 1, the low-temperature hot air device further includes a first temperature sensor 5 disposed in the protective cover 1 and between the first heating element 3 and the air outlet 4.
The high temperature heating device is capable of generating thermal radiation to heat the local repair coating, which may be of various types, for example: a far infrared heater, a heating rod, a heating pipe and the like; as further shown in fig. 1, the high temperature heating device is preferably a track heater, which generally includes a heating track 6 and a controller 8, the controller 8 being electrically connected to the heating track 6 via a wire 7. The crawler-type heater is uniform in heating temperature, convenient to control and better in curing effect on the local repair coating. In particular, the heating track 6 comprises a second heating element coated with ceramic; the second heating elements are usually uniformly distributed and can be folded randomly, so that the uniformity of the temperature field is guaranteed.
On the basis, in order to monitor the heating temperature of the high-temperature heating device in real time so as to improve the effectiveness of heating the local repair coating, the heating crawler 6 is provided with a second temperature sensor electrically connected with the controller 8.
Example 1
The local defect repairing process of the inorganic phosphate Al coating of a large part comprises the following steps:
s1, removing oil stains on the surface of the defective part of the coating by adopting a chemical oil removal mode, wherein acetone, alcohol and other similar organic solvents can be adopted for oil removal, and acetone is preferably adopted for wiping; meanwhile, spraying protection of non-defective parts is well performed;
s2, performing sand blasting treatment on the coating defect part by adopting a sand blasting device, wherein Al is generally adopted2O3Sand, wherein the sand blasting pressure is 0.4 MPa, the sand blasting distance is 150-200 mm, and Al2O3The grain diameter of the sand is 180 meshes;
s3, preparing a new coating on the defective part of the coating by adopting a spray painting mode to form a local repair coating;
s4, the heating equipment for repairing the inorganic phosphate Al coating provided by the utility model is used for heating and curing the local repairing coating, and comprises the following two stages:
in the first stage, hot air is blown out by a low-temperature hot air device to heat and cure the local repair coating, the heating temperature in the first stage is 70-80 ℃, and the curing time is 60-70 min;
and in the second stage, the high-temperature heating device emits heat radiation to heat and cure the local repair coating, the heating temperature in the stage is 330-350 ℃, the heating speed is less than 10 ℃/min, and the curing time is 60-70 min.
To compare the difference between the properties of the repair coating and the original coating in example 1, the repair coating and the original coating were tested for adhesion strength, conductivity, and corrosion resistance, as detailed in table 1.
Table 1: comparison of the repair coating of example 1 with the original coating Performance
Example 2
The local defect repairing process of the inorganic phosphate Al coating of a large part comprises the following steps:
s1, removing oil stains on the surface of the defective part of the coating by adopting a chemical oil removal mode, wherein acetone, alcohol and other similar organic solvents can be adopted for oil removal, and acetone is preferably adopted for wiping; meanwhile, spraying protection of non-defective parts is well performed;
s2, performing sand blasting treatment on the coating defect part by adopting a sand blasting device, wherein Al is generally adopted2O3Sand, wherein the sand blasting pressure is 0.2 MPa, the sand blasting distance is 100-150 mm, and Al2O3The grain diameter of the sand is 120 meshes;
s3, preparing a new coating on the defective part of the coating by adopting a spray painting mode to form a local repair coating;
s4, the heating equipment for repairing the inorganic phosphate Al coating provided by the utility model is used for heating and curing the local repairing coating, and comprises the following two stages:
in the first stage, hot air is blown out by a low-temperature hot air device to heat and cure the local repair coating, the heating temperature in the first stage is 60-70 ℃, and the curing time is 80-90 min;
and in the second stage, the high-temperature heating device emits heat radiation to heat and cure the local repair coating, the heating temperature in the stage is 250-280 ℃, the heating speed is less than 10 ℃/min, and the curing time is 80-90 min.
To compare the difference between the properties of the repair coating and the original coating in example 2, the repair coating and the original coating were tested for adhesion strength, conductivity, and corrosion resistance, as detailed in table 2.
Table 2: comparison of the repair coating of example 2 with the original coating Performance
Claims (6)
1. Inorganic phosphate Al coating restores and uses firing equipment, its characterized in that: comprises a low-temperature hot air device and a high-temperature heating device; the low-temperature hot air device comprises a protective cover (1) with an air outlet (4), a fan (2) which is arranged in the protective cover (1) and the air supply direction of which faces the air outlet (4), and a first heating element (3) which is arranged in the protective cover (1) and is positioned between the fan (2) and the air outlet (4); the high-temperature heating device is a heat radiation heater, and the rated heating temperature of the high-temperature heating device is higher than that of the low-temperature hot air device.
2. The heating apparatus for repairing inorganic phosphate Al coating according to claim 1, wherein: the low-temperature hot air device further comprises a first temperature sensor (5) which is arranged in the protective cover (1) and is positioned between the first heating element (3) and the air outlet (4).
3. The heating apparatus for repairing inorganic phosphate Al coating according to claim 1, wherein: the rated heating temperature of the low-temperature hot air device is not higher than 100 ℃.
4. The heating apparatus for inorganic phosphate Al coating restoration as recited in any one of claims 1 to 3, characterized in that: the high-temperature heating device is a crawler-type heater and comprises a heating crawler belt (6) and a controller (8), wherein the controller (8) is electrically connected with the heating crawler belt (6) through a lead (7).
5. The heating apparatus for repairing inorganic phosphate Al coating according to claim 4, wherein: the heating track (6) comprises a ceramic coated second heating element.
6. The heating apparatus for repairing inorganic phosphate Al coating according to claim 4, wherein: and a second temperature sensor electrically connected with the controller (8) is arranged on the heating crawler (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120105707.4U CN214864969U (en) | 2021-01-14 | 2021-01-14 | Heating equipment for repairing inorganic phosphate Al coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120105707.4U CN214864969U (en) | 2021-01-14 | 2021-01-14 | Heating equipment for repairing inorganic phosphate Al coating |
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| Publication Number | Publication Date |
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| CN214864969U true CN214864969U (en) | 2021-11-26 |
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| CN202120105707.4U Active CN214864969U (en) | 2021-01-14 | 2021-01-14 | Heating equipment for repairing inorganic phosphate Al coating |
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2021
- 2021-01-14 CN CN202120105707.4U patent/CN214864969U/en active Active
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