CN112518157A - Temperature control method for high-speed jet material increase repair of aluminum alloy structure - Google Patents
Temperature control method for high-speed jet material increase repair of aluminum alloy structure Download PDFInfo
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- CN112518157A CN112518157A CN202011337254.4A CN202011337254A CN112518157A CN 112518157 A CN112518157 A CN 112518157A CN 202011337254 A CN202011337254 A CN 202011337254A CN 112518157 A CN112518157 A CN 112518157A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
Abstract
The application belongs to the field of additive repair, and particularly relates to a temperature control method for high-speed jet additive repair of an aluminum alloy structure. The method comprises the following steps: the method comprises the following steps that firstly, a part to be repaired is obtained, A-type measuring points and B-type measuring points are selected on the part, a first temperature sensor is arranged at the A-type measuring points, and a second temperature sensor is arranged at the B-type measuring points; setting the alarm threshold of the first temperature sensor as a first alarm threshold, and setting the alarm threshold of the second temperature sensor as a second alarm threshold; thirdly, performing high-speed jet flow additive repair operation on the part, and immediately stopping the high-speed jet flow additive repair operation when the first temperature sensor or the second temperature sensor gives an alarm; when the measured value of the first sensor reaches the first preset temperature and the measured value of the second sensor reaches the second preset temperature, the high-speed jet flow material increasing repairing operation is conducted on the part again, and the step is repeated until the high-speed jet flow material increasing repairing is completed.
Description
Technical Field
The application belongs to the field of additive repair, and particularly relates to a temperature control method for high-speed jet additive repair of an aluminum alloy structure.
Background
The main bearing component of the airplane body is easy to generate fatigue cracks due to large bearing load, and the flight safety is directly endangered once the main bearing component is damaged. The member has a complex structure, a narrow construction passage and is often in a fuel environment, and the limitation on the repair means of cracks is severe. The traditional bolt connection reinforcement and glue joint reinforcement repair modes and the 3D printing and friction stir welding which belong to the same additive manufacturing are not enough. Therefore, a high-speed jet flow additive-based repair method is provided, the method is based on the technical principle of jet flow, high-speed particle jet flow is formed by driving particles through high-pressure gas, the particles collide with a component to be repaired to generate severe plastic deformation, and a deposition layer (additive layer) is formed on the surface of the component to be repaired, so that the crack is repaired.
The high temperature resistance of the aluminum alloy structure is poor, and when the temperature exceeds the allowable value, the aluminum alloy structure is annealed, so that the original strength performance of the matrix is damaged, and the significance of additive repair is lost. The control of the temperature state of an aluminum alloy structure during high-speed jet additive repair is of great importance, and means in the aspect are lacked at present.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide a high-speed jet flow additive repair aluminum alloy structure temperature control method to solve at least one problem in the prior art.
The technical scheme of the application is as follows:
a temperature control method for high-speed jet additive repair of an aluminum alloy structure comprises the following steps:
the method comprises the steps of firstly, obtaining a part to be repaired, selecting A-type measuring points and B-type measuring points on the part according to the position of a material increasing repair area, arranging a first temperature sensor at the A-type measuring points, and arranging a second temperature sensor at the B-type measuring points;
setting the alarm threshold of the first temperature sensor as a first alarm threshold, and setting the alarm threshold of the second temperature sensor as a second alarm threshold;
step three,
Carrying out high-speed jet flow additive repair operation on the part, and immediately stopping the high-speed jet flow additive repair operation when the first temperature sensor or the second temperature sensor gives an alarm;
when the measured value of the first sensor reaches the first preset temperature and the measured value of the second sensor reaches or is lower than the second preset temperature, the high-speed jet flow additive repairing operation on the part is resumed, and
and repeating the steps until the high-speed jet flow additive repair is completed on the additive repair area of the part.
Optionally, in the first step, the obtaining of the part to be repaired selects a type a measurement point and a type B measurement point on the part according to the position of the material-added repair area, the arranging of the first temperature sensor at the type a measurement point, and the arranging of the second temperature sensor at the type B measurement point include:
obtaining a part to be repaired, wherein the part is plate-shaped and comprises a first plate surface and a second plate surface, and the middle part of the first plate surface of the part is a material increasing repair area;
the position on the second board surface corresponding to the center of the additive repair area of the first board surface is used as a type A measurement point, and a type B measurement point is respectively selected from non-additive repair areas on two sides of the additive repair area of the first board surface;
a first temperature sensor is arranged at the type A measuring point, and a second temperature sensor is arranged at the type B measuring point.
Optionally, in the first step, the obtaining of the part to be repaired selects a type a measurement point and a type B measurement point on the part according to the position of the material-added repair area, the arranging of the first temperature sensor at the type a measurement point, and the arranging of the second temperature sensor at the type B measurement point include:
obtaining a part to be repaired, wherein the part is plate-shaped and comprises a first plate surface and a second plate surface, and the middle parts of the first plate surface and the second plate surface of the part are additive repairing areas;
when carrying out high-speed efflux increase material repair operation to the increase material repair area of the first face of part, the measuring point is selected through following mode:
the position on the second board surface corresponding to the center of the additive repair area of the first board surface is used as a type A measurement point, and a type B measurement point is respectively selected from non-additive repair areas on two sides of the additive repair area of the first board surface;
when carrying out high-speed efflux increase material repair operation to the increase material repair area of the second face of part, the measuring point is selected through following mode:
respectively selecting a B-type measuring point on the non-additive repair area on the two sides of the additive repair area of the second plate surface;
a second temperature sensor is arranged at the class B measurement point.
Optionally, in the second step, the first alarm threshold is 95% of the allowable temperature value of the aluminum alloy material, and the second alarm threshold is 75% of the allowable temperature value of the aluminum alloy material.
Optionally, in the third step, the first preset temperature is 70% of the allowable temperature value of the aluminum alloy material, and the second preset temperature is 50% of the allowable temperature value of the aluminum alloy material.
Optionally, in the third step, when the high-speed jet flow material increasing repair operation is performed on the part, an air inlet channel and an air outlet channel are arranged around the part, and the part is cooled through air circulation flow.
Optionally, in the third step, when the high-speed jet flow additive repair operation is performed on the part, a cooling gas conveying device is arranged on the back of the additive repair area of the part.
Optionally, the cooling gas of the cooling gas delivery device is compressed air or cold air of an air conditioner.
The invention has at least the following beneficial technical effects:
the temperature control method for the high-speed jet flow additive repair aluminum alloy structure can ensure that the temperature of the aluminum alloy structure is within the allowable temperature range in the high-speed jet flow additive repair process, ensure normal high-speed jet flow additive repair, prevent the original structure from being damaged due to overtemperature, and meet the requirement of high-speed jet flow additive repair.
Drawings
FIG. 1 is a schematic view of arrangement of measurement points when an additive repair area of a part is located on a first plate surface according to an embodiment of the application;
FIG. 2 is a schematic view of arrangement of measurement points when an additive repair area of a part is located on a second plate surface according to an embodiment of the application;
FIG. 3 is a schematic diagram of a high-speed jet additive repair operation performed on a part according to an embodiment of the present application.
Wherein:
1-parts; 2-a spray gun; 3-cooling the gas delivery device.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. 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 application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1 to 3.
The application provides a temperature control method for high-speed jet additive repairing of an aluminum alloy structure, which comprises the following steps:
the method comprises the steps of firstly, obtaining a part to be repaired, selecting A-type measuring points and B-type measuring points on the part according to the position of a material increasing repair area, arranging a first temperature sensor at the A-type measuring points, and arranging a second temperature sensor at the B-type measuring points;
setting the alarm threshold of the first temperature sensor as a first alarm threshold, and setting the alarm threshold of the second temperature sensor as a second alarm threshold;
step three,
Carrying out high-speed jet flow additive repair operation on the part, and immediately stopping the high-speed jet flow additive repair operation when the first temperature sensor or the second temperature sensor gives an alarm;
when the measured value of the first sensor reaches the first preset temperature and the measured value of the second sensor reaches or is lower than the second preset temperature, the high-speed jet flow additive repairing operation on the part is resumed, and
and repeating the steps until the high-speed jet flow additive repair is completed on the additive repair area of the part.
According to the temperature control method for the high-speed jet additive repairing aluminum alloy structure, in the first step, a part to be repaired is obtained firstly, A-type measuring points and B-type measuring points are selected on the part according to the position of an additive repairing area, a first temperature sensor is arranged at the A-type measuring points, and a second temperature sensor is arranged at the B-type measuring points.
In an embodiment of the present application, as shown in fig. 1, the part is plate-shaped, and includes a first plate surface and a second plate surface, in this embodiment, single-side additive repair is performed, and only a middle portion of the first plate surface of the part is an additive repair area; the A-type measuring points are arranged on the back of the center of the additive repair area, namely positions on the second plate surface corresponding to the center of the additive repair area of the first plate surface are used as the A-type measuring points, and B-type measuring points are respectively selected from non-additive repair areas on two sides of the additive repair area, namely non-additive repair areas on two sides of the additive repair area of the first plate surface, wherein the two B-type measuring points are shown in FIG. 1; a first temperature sensor is arranged at the class a measurement point and a second temperature sensor is arranged at the class B measurement point, see fig. 1.
In another embodiment of the application, as shown in fig. 1 to 2, a part to be repaired is obtained, the part is in a plate shape and includes a first plate surface and a second plate surface, the middle parts of the first plate surface and the second plate surface of the part are both additive repair areas, and the two plate surfaces need to be respectively subjected to additive repair; the arrangement of the measurement points needs to be divided into two steps:
firstly, when carrying out high-speed efflux reinforcement restoration operation to the reinforcement restoration region of the first face of part, the measuring point is selected through following mode: the position on the second board surface corresponding to the center of the additive repair area of the first board surface is used as a type A measurement point, and a type B measurement point is respectively selected from non-additive repair areas on two sides of the additive repair area of the first board surface; a first temperature sensor is arranged at the class a measurement point and a second temperature sensor is arranged at the class B measurement point, see fig. 1.
Further, when carrying out high-speed efflux increase repair operation to the increase repair area of the second face of part, the measuring point is selected through following mode: respectively selecting a B-type measuring point on the non-additive repair area on the two sides of the additive repair area of the second plate surface; a second temperature sensor is arranged at the class B measurement point, see fig. 2.
In one embodiment of the present application, in the second step, the first alarm threshold is 95% of the allowable temperature value of the aluminum alloy material, and the second alarm threshold is 75% of the allowable temperature value of the aluminum alloy material. In the third step of this embodiment, the first preset temperature is 70% of the allowable temperature value of the aluminum alloy material, and the second preset temperature is 50% of the allowable temperature value of the aluminum alloy material.
Advantageously, in an embodiment of the present application, in step three, when the high-speed jet flow additive repair operation is performed on the part, the part may be placed in a work box in which an air inlet channel and an air outlet channel are arranged, and the part is cooled through air circulation flow.
It can be understood that, if the structural style of part is unfavorable for the heat dissipation, the circulation of air of simplicity can not satisfy the temperature control requirement, or frequently appears the temperature warning when carrying out high-speed efflux increase material restoration operation, when influencing work efficiency, when carrying out high-speed efflux increase material restoration operation to the part through spray gun 2, can also set up forced cooling gas conveying device 5, the cooling of auxiliary component at the increase material of part 1 and restore regional back. In this embodiment, the cooling gas in the cooling gas delivery unit 5 may be compressed air or may be cold air supplied from an air conditioner.
The temperature control method for the high-speed jet additive repair of the aluminum alloy structure has the following specific implementation mode:
S100、
obtaining a part to be repaired, wherein as shown in fig. 1 to 2, the part 1 is plate-shaped and comprises a first plate surface and a second plate surface, and the middle parts of the first plate surface and the second plate surface of the part 1 are material-increasing repair areas;
when high-speed jet flow additive repair operation is performed on an additive repair area of a first plate surface of a part 1, selecting A-type measurement points and B-type measurement points on the part 1 according to the position of the additive repair area, and arranging 1A-type measurement point and 2B-type measurement points according to the graph 1;
a first temperature sensor is arranged at the type A measuring point, and a second temperature sensor is arranged at the type B measuring point.
S200、
In this embodiment, the allowable temperature of the part material is 125 ℃, the temperature alarm threshold of the first temperature sensor of the class a measurement point is set to be 115 ℃, and the temperature alarm threshold of the second temperature sensor of the class B measurement point is set to be 95 ℃.
S300、
Increase the temperature control of material restoration first face in-process:
s301, placing the part 1 to be repaired in a work box with an air inlet channel and an exhaust channel, reliably fixing, carrying out high-speed jet flow material increasing repair operation on the part 1 through a spray gun 2, monitoring a part temperature rising change curve of a temperature measuring point in real time, and immediately stopping the high-speed jet flow material increasing repair operation when any temperature monitoring point gives an alarm.
S302, after the first sensor of the type A measuring point falls back to 85 ℃ and the second temperature sensor of the type B measuring point falls back to below 65 ℃, restoring the high-speed jet flow material increasing repair operation on the part;
and S303, repeating the steps S301 to S302 until the additive on the first plate surface is restored to the specified thickness.
Further, in the present invention,
S100、
when high-speed jet flow additive repair operation is performed on an additive repair area of a second plate surface of the part 1, selecting B-type measurement points on the part 1 according to the position of the additive repair area, wherein in the embodiment, 2B-type measurement points are arranged according to FIG. 2;
a second temperature sensor is arranged at the class B measurement point.
S200、
The temperature alarm threshold of the second temperature sensor of the class B measuring point is 95 ℃.
S300、
Increase the temperature control of material restoration second face in-process:
s301, placing the part 1 to be repaired in a work box with an air inlet channel and an exhaust channel, reliably fixing, carrying out high-speed jet flow material increasing repair operation on the part 1 through a spray gun 2, monitoring a part temperature rising change curve of a temperature measuring point in real time, and immediately stopping the high-speed jet flow material increasing repair operation when any temperature monitoring point gives an alarm.
S302, after the second temperature sensor of the B-type measuring point falls back to below 65 ℃, restoring to perform high-speed jet flow additive repairing operation on the part;
and S303, repeating the steps S301 to S302 until the additive of the second plate surface is restored to the specified thickness.
The temperature control method for the high-speed jet flow additive repair aluminum alloy structure can ensure that the temperature of the aluminum alloy structure is within the allowable temperature range in the high-speed jet flow additive repair process, ensure normal high-speed jet flow additive repair, prevent the original structure from being damaged due to overtemperature, and meet the requirement of high-speed jet flow additive repair.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A high-speed jet flow additive repair aluminum alloy structure temperature control method is characterized by comprising the following steps:
the method comprises the steps of firstly, obtaining a part to be repaired, selecting A-type measuring points and B-type measuring points on the part according to the position of a material increasing repair area, arranging a first temperature sensor at the A-type measuring points, and arranging a second temperature sensor at the B-type measuring points;
setting the alarm threshold of the first temperature sensor as a first alarm threshold, and setting the alarm threshold of the second temperature sensor as a second alarm threshold;
step three,
Carrying out high-speed jet flow additive repair operation on the part, and immediately stopping the high-speed jet flow additive repair operation when the first temperature sensor or the second temperature sensor gives an alarm;
when the measured value of the first sensor reaches the first preset temperature and the measured value of the second sensor reaches or is lower than the second preset temperature, the high-speed jet flow additive repairing operation on the part is resumed, and
and repeating the steps until the high-speed jet flow additive repair is completed on the additive repair area of the part.
2. The temperature control method for the high-speed jet additive repair of the aluminum alloy structure according to claim 1, wherein in the first step, the obtaining of the part to be repaired, the selecting of a type A measuring point and a type B measuring point on the part according to the position of the additive repair area, the arranging of the first temperature sensor at the type A measuring point, and the arranging of the second temperature sensor at the type B measuring point comprise:
obtaining a part to be repaired, wherein the part is plate-shaped and comprises a first plate surface and a second plate surface, and the middle part of the first plate surface of the part is a material increasing repair area;
the position on the second board surface corresponding to the center of the additive repair area of the first board surface is used as a type A measurement point, and a type B measurement point is respectively selected from non-additive repair areas on two sides of the additive repair area of the first board surface;
a first temperature sensor is arranged at the type A measuring point, and a second temperature sensor is arranged at the type B measuring point.
3. The temperature control method for the high-speed jet additive repair of the aluminum alloy structure according to claim 1, wherein in the first step, the obtaining of the part to be repaired, the selecting of a type A measuring point and a type B measuring point on the part according to the position of the additive repair area, the arranging of the first temperature sensor at the type A measuring point, and the arranging of the second temperature sensor at the type B measuring point comprise:
obtaining a part to be repaired, wherein the part is plate-shaped and comprises a first plate surface and a second plate surface, and the middle parts of the first plate surface and the second plate surface of the part are additive repairing areas;
when carrying out high-speed efflux increase material repair operation to the increase material repair area of the first face of part, the measuring point is selected through following mode:
the position on the second board surface corresponding to the center of the additive repair area of the first board surface is used as a type A measurement point, and a type B measurement point is respectively selected from non-additive repair areas on two sides of the additive repair area of the first board surface;
when carrying out high-speed efflux increase material repair operation to the increase material repair area of the second face of part, the measuring point is selected through following mode:
respectively selecting a B-type measuring point on the non-additive repair area on the two sides of the additive repair area of the second plate surface;
a second temperature sensor is arranged at the class B measurement point.
4. The method for controlling the temperature of the high-speed jet flow additive repair aluminum alloy structure according to claim 1, wherein in the second step, the first alarm threshold is 95% of the allowable temperature value of the aluminum alloy material, and the second alarm threshold is 75% of the allowable temperature value of the aluminum alloy material.
5. The temperature control method for the high-speed jet flow additive repair aluminum alloy structure according to claim 4, wherein in the third step, the first preset temperature is 70% of the allowable temperature value of the aluminum alloy material, and the second preset temperature is 50% of the allowable temperature value of the aluminum alloy material.
6. The method for controlling the temperature of the high-speed jet additive repair aluminum alloy structure according to claim 5, wherein in the third step, when the high-speed jet additive repair operation is performed on the part, an air inlet channel and an air outlet channel are arranged around the part, and the part is cooled through air circulation flow.
7. The method for controlling the temperature of the high-speed jet additive repair aluminum alloy structure according to claim 6, wherein in the third step, when the high-speed jet additive repair operation is performed on the part, a cooling gas conveying device is arranged on the back surface of the additive repair area of the part.
8. The method for controlling the temperature of the high-speed jet additive repair aluminum alloy structure according to claim 7, wherein the cooling gas of the cooling gas conveying device is compressed air or cold air of an air conditioner.
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