Improved aluminum alloy salt-fog-resistant nickel-free medium-temperature hole sealing agent, hole sealing process and hole sealing equipment

Abstract

The invention relates to the technical field of aluminum alloy hole sealing, in particular to an improved aluminum alloy salt-fog-resistant nickel-free medium-temperature hole sealing agent, a hole sealing process and hole sealing equipment. The improved nickel-free medium-temperature hole sealing agent for the salt mist resistance of the aluminum alloy comprises the following raw materials in parts by mass: 60-90 parts of sodium silicate, 10-20 parts of sodium chloride, 15-25 parts of polyvinyl alcohol, 30-40 parts of sodium formate, 5-15 parts of sodium sulfate, 1-8 parts of a surfactant and 0.3-0.5 part of a silane coupling agent. The hole sealing effect and the corrosion resistance effect of the aluminum alloy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy sealing, in particular to an improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent, a sealing process and a sealing device. Background Art

[0002] As a lightweight and corrosion-resistant metal material, aluminum is widely used in the fields of construction, transportation, aerospace, etc. However, during the processing and use of aluminum, many tiny pores will form on the surface, which not only affect the appearance, but also may reduce the corrosion resistance and service life of aluminum. Therefore, it is particularly important to seal the pores of aluminum.

[0003] When sealing the aluminum material, it needs to be immersed in the sealing liquid, and the sealing effect is achieved by electrifying the sealing liquid. After the sealing is completed, the aluminum material needs to be taken out. During this process, the aluminum material needs to be clamped. Although this is convenient for transferring the aluminum material, the area on the aluminum material covered by the clamp cannot be sealed, which makes the corrosion resistance of this area poor, affecting the overall corrosion resistance of the aluminum material. Summary of the invention

[0004] The purpose of the present invention is to provide an improved nickel-free medium-temperature sealing agent, sealing process and sealing equipment for aluminum alloys resistant to salt spray, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent comprises the following raw materials in parts by weight: 60-90 parts of sodium silicate, 10-20 parts of sodium chloride, 15-25 parts of polyvinyl alcohol, 30-40 parts of sodium formate, 5-15 parts of sodium sulfate, 1-8 parts of surfactant, and 0.3-0.5 parts of silane coupling agent.

[0006] As a further solution of the present invention: the improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent comprises the following raw materials in parts by weight: 65-80 parts of sodium silicate, 12-17 parts of sodium chloride, 18-22 parts of polyvinyl alcohol, 32-36 parts of sodium formate, 8-11 parts of sodium sulfate, 2-5 parts of surfactant, and 0.35-0.4 parts of silane coupling agent.

[0007] As a further solution of the present invention: the improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent comprises the following raw materials in parts by weight: 70 parts of sodium silicate, 15 parts of sodium chloride, 20 parts of polyvinyl alcohol, 34 parts of sodium formate, 10 parts of sodium sulfate, 3 parts of surfactant, and 0.38 parts of silane coupling agent.

[0008] As a further solution of the present invention: a sealing process, using the improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent, comprises the following steps: Step 1: adding distilled water to the improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent to prepare a sealing solution; Step 2: Immerse the aluminum alloy to be sealed in the sealing solution and let it stand for 30 minutes; Step 3: Take out the soaked aluminum alloy and dry it.

[0009] As a further solution of the present invention: a sealing device, applied to the sealing process, comprises: an immersion tank, a lifting device and a clamping device, wherein the lifting device can drive the aluminum alloy clamped by the clamping device to move in a vertical direction in space; The clamping device comprises: A connecting plate, detachably connected to the lifting device, wherein the connecting plate is provided with two sets of side plates capable of relative movement; A clamping assembly is provided in multiple groups and connected to a connecting shaft installed on the side plate, and abutment members that cooperate with each other and can clamp the aluminum alloy are formed on the clamping assembly; An energy storage mechanism is arranged on the connecting plate, the energy storage structure comprises an elastic component and a guide groove, the elastic component cooperates with the guide groove to enable the two groups of side plates to move; A driving component is arranged on the connecting plate, and the driving component can sequentially drive multiple groups of clamping components to perform release and clamping actions on the aluminum alloy, and the driving component can lock the position of the elastic component.

[0010] As a further solution of the present invention: the elastic component includes a guide groove arranged on the connecting plate, a sliding member is slidably installed in the guide groove, a first transverse rod is connected to the sliding member, a transverse member is slidably installed on the first transverse rod, and a first spring is sleeved on the first transverse rod, one end of the first spring is connected to the end of the first transverse rod, and the other end is connected to the transverse member; The elastic component also includes a second protruding shaft rotatably connected to the transverse member, and the second protruding shaft can roll in the guide groove.

[0011] As a further solution of the present invention: the guide groove includes a first inclined groove and a second inclined groove arranged on the connecting plate, the first inclined groove is connected to the second inclined groove, and an outer protrusion protruding toward the guide groove is formed at the connection between the first inclined groove and the second inclined groove.

[0012] As a further solution of the present invention: the sliding member is further connected to a second transverse rod, and a third cam shaft is rotatably mounted on the second transverse rod; The side plate is provided with a third inclined groove and a vertical groove, and the third convex shaft can roll in the third inclined groove and the vertical groove. When the third convex shaft rolls in the third inclined groove, the two groups of side plates can be driven to move closer to each other.

[0013] As a further solution of the present invention: the clamping assembly includes a connecting rod slidably connected to the connecting shaft, one end of the connecting rod is connected to the abutment member, and the other end is provided with a connecting frame, the connecting frame is connected to the connecting shaft through a second spring, and the connecting frame is provided with an abutment portion; The abutment roller connected to the driving assembly can cooperate with the abutment portion to drive the two groups of the abutment members that cooperate to move away from each other.

[0014] As a further solution of the present invention: the driving assembly includes an electric telescopic rod fixedly mounted on the connecting plate, the action end of the electric telescopic rod is connected to a first bracket and a second bracket, and the second bracket is rotatably connected to the abutting roller; The first bracket is formed with an inclined surface and a vertical surface; The driving assembly also includes a horizontal groove connected to one end of the second inclined groove away from the first inclined groove and a slide groove arranged on the transverse member, a slider is slidably installed in the slide groove, the slider is slidably connected to the first guide member arranged on the connecting plate, and a first cam is rotatably installed on the slider, the first cam cooperates with the inclined surface to drive the second cam into the horizontal groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting the driving assembly, the two groups of side plates can be locked first in the action of the electric telescopic rod to prevent the two groups of side plates from moving away from each other when the abutting roller acts on the abutting part, causing the multiple groups of clamping assemblies to perform the release action at the same time, so that the clamping assembly is separated from the aluminum alloy, and the aluminum alloy sinks into the immersion tank. In the process that the abutting roller cooperates with the abutting part in turn, the abutting members on the multiple groups of clamping assemblies can be separated from the aluminum alloy in turn, so that the area of ​​the aluminum alloy covered by the abutting members is exposed, while ensuring that the remaining abutting members can maintain the clamping of the aluminum alloy, that is, while ensuring that the area of ​​the aluminum alloy covered by the abutting members can be sealed, it is ensured that the aluminum alloy can also be clamped by other abutting members, so that the aluminum alloy has a certain stability, improves the comprehensiveness of the aluminum alloy sealing, and ensures its overall corrosion resistance effect. By setting the elastic component and the side plate, the two sets of side plates can have higher stability in different position states, so that on the one hand, when loading the aluminum alloy, the aluminum alloy can be placed in the clamping component more conveniently, which is convenient for operation; on the other hand, when the clamping component performs the pre-clamping state on the aluminum alloy, the pre-clamping state can be made more stable, avoiding the separation of the aluminum alloy and the clamping component, resulting in the subsequent failure of sealing the aluminum alloy. By setting up the clamping assembly, the abutment piece can abut against the aluminum alloy under the cooperation of the first spring and the second spring, thereby ensuring the connection stability between the abutment piece and the aluminum alloy, and at the same time being able to clamp different types of aluminum alloys, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of an embodiment of a sealing device.

[0017] Figure 2 This is a schematic structural diagram from another angle in one embodiment of the sealing device.

[0018] Figure 3 It is a structural schematic diagram of the energy storage mechanism in one embodiment of the sealing device.

[0019] Figure 4 This is an exploded view of the structure of the second transverse rod and the side plate in one embodiment of the sealing device.

[0020] Figure 5 This is an exploded view of the structure of the elastic component in one embodiment of the sealing device.

[0021] Figure 6 It is a schematic diagram of the planar structure of the connecting plate in one embodiment of the sealing device.

[0022] Figure 7 The figure is a schematic diagram of the planar structure of the side plate in one embodiment of the sealing device.

[0023] Figure 8 This is a schematic diagram of the structure of a clamping assembly in one embodiment of a sealing device.

[0024] Fig. 9 for Figure 8 A magnified view of the structure at center.

[0025] Fig.10 This is a schematic diagram of the structure of a driving component in an embodiment of a sealing device.

[0026] In the figure: 1, connecting plate; 101, guide groove; 102, first inclined groove; 103, second inclined groove; 104, horizontal groove; 2, sliding member; 3, first transverse rod; 4, second transverse rod; 5, first spring; 6, transverse member; 601, slide groove; 7, sliding block; 8, first cam shaft; 9, second cam shaft; 10, first guide member; 11, third cam shaft; 12, side plate; 1201, third inclined groove; 1202, vertical groove; 13, hooking part; 14, second guide member; 15, electric telescopic rod; 16, first bracket; 1601, inclined surface; 1602, vertical surface; 17, second bracket; 18, abutment roller; 19, connecting shaft; 20, connecting rod; 21, abutment member; 22, connecting frame; 23, second spring; 24, abutment part. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0029] Example 1, an improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent, comprising the following raw materials in parts by weight: 60 parts of sodium silicate, 10 parts of sodium chloride, 15 parts of polyvinyl alcohol, 30 parts of sodium formate, 5 parts of sodium sulfate, 1 part of surfactant, and 0.3 parts of silane coupling agent.

[0030] Example 2, an improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent, comprising the following raw materials in parts by weight: 65 parts of sodium silicate, 12 parts of sodium chloride, 18 parts of polyvinyl alcohol, 32 parts of sodium formate, 8 parts of sodium sulfate, 2 parts of surfactant, and 0.35 parts of silane coupling agent.

[0031] Example 3, an improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent, comprising the following raw materials in parts by weight: 70 parts of sodium silicate, 15 parts of sodium chloride, 20 parts of polyvinyl alcohol, 34 parts of sodium formate, 10 parts of sodium sulfate, 3 parts of surfactant, and 0.38 parts of silane coupling agent.

[0032] Example 4, an improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent, comprising the following raw materials in parts by weight: The invention comprises the following raw materials in parts by weight: 80 parts of sodium silicate, 17 parts of sodium chloride, 22 parts of polyvinyl alcohol, 36 parts of sodium formate, 11 parts of sodium sulfate, 5 parts of surfactant and 0.4 parts of silane coupling agent.

[0033] Example 5, an improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent, comprising the following raw materials in parts by weight: 90 parts of sodium silicate, 20 parts of sodium chloride, 25 parts of polyvinyl alcohol, 40 parts of sodium formate, 15 parts of sodium sulfate, 8 parts of surfactant, and 0.5 parts of silane coupling agent.

[0034] Comparative Example 1, removing sodium formate and sodium sulfate from raw materials, including the following raw materials in parts by weight: 90 parts of sodium silicate, 20 parts of sodium chloride, 25 parts of polyvinyl alcohol, 8 parts of surfactant, 0.5 parts of silane coupling agent; Six groups of aluminum alloy materials (ten in each group) were taken, and the six groups of aluminum alloys were treated with the sealing agents of Examples 1 to 5 and Comparative Example 1, respectively, and then the six groups of aluminum alloys were placed in a hydrochloric acid solution for 60 hours, and the following table was obtained:

[0035] It can be seen from the above table that when sodium formate and sodium sulfate are added as raw materials, the sealed aluminum alloy can be subjected to lower corrosion in the hydrochloric acid solution, indicating that the sealing agent with the addition of sodium formate and sodium sulfate can make the aluminum alloy have better corrosion resistance.

[0036] As an embodiment of the present invention, a sealing process is also proposed, using the improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent, comprising the following steps: Step 1: adding distilled water to the improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent to prepare a sealing solution; Step 2: Immerse the aluminum alloy to be sealed in the sealing solution and let it stand for 30 minutes; Step 3: Take out the soaked aluminum alloy and dry it.

[0037] See also Figure 1 to Figure 10 , a sealing device, applied to the sealing process, comprising: an immersion tank, a lifting device and a clamping device, wherein the lifting device can drive the aluminum alloy clamped by the clamping device to move in the vertical direction of space, wherein the immersion tank contains a sealing solution; The clamping device comprises: a connecting plate 1, a clamping assembly, an energy storage mechanism and a driving assembly.

[0038] An energy storage mechanism is arranged on the connecting plate 1, and the energy storage structure includes an elastic component and a guide groove. The elastic component cooperates with the guide groove to enable the two groups of side plates 12 to move; The elastic component includes a guide groove 101 provided on the link plate 1, a sliding member 2 is slidably installed in the guide groove 101, a first transverse rod 3 is connected to the sliding member 2, a transverse member 6 is slidably installed on the first transverse rod 3, and a first spring 5 is sleeved on the first transverse rod 3, one end of the first spring 5 is connected to the end of the first transverse rod 3, and the other end is connected to the transverse member 6; The elastic component also includes a second convex shaft 9 rotatably connected to the transverse member 6, and the second convex shaft 9 can roll in the guide groove. The guide groove includes a first inclined groove 102 and a second inclined groove 103 arranged on the connecting plate 1, and the first inclined groove 102 is connected to the second inclined groove 103, and an outer protrusion protruding toward the guide groove 101 is formed at the connection between the first inclined groove 102 and the second inclined groove 103.

[0039] In the initial state, the first spring 5 is in a compressed state. At this time, the first spring 5 can release the elastic potential energy to make the two groups of transverse members 6 move away from each other, so that the second cam shaft 9 can be at one end of the first inclined groove 102 away from the second inclined groove 103 and have a certain stability, so that the clamping assembly is in a released state. At this time, the aluminum alloy can be placed in the clamping assembly more conveniently, making it more convenient to load the aluminum alloy onto the clamping assembly.

[0040] When the aluminum alloy is placed in the clamping assembly, the sliding member 2 is pulled downward to move, and the second protrusion 9 can move along the first inclined groove 102 toward the outer protrusion so that the first spring 5 can be further compressed. When the second protrusion 9 moves over the outer protrusion, the first spring 5 can actively release its elastic potential energy and drive the second protrusion 9 to move along the second inclined groove 103. At this time, the clamping assembly can switch from a released state to a clamping state, thereby realizing pre-clamping of the aluminum alloy. At the same time, after the clamping assembly clamps the aluminum alloy, the first spring 5 is still in a compressed state, which improves the clamping stability of the clamping assembly to the aluminum alloy to a certain extent.

[0041] See also Figure 4~Figure 5 , Figure 7 The connecting plate 1 is detachably connected to the lifting device, and two sets of side plates 12 capable of relative movement are provided on the connecting plate 1. Specifically, a hooking portion 13 is provided on the side plate 12, and the hooking portion 13 can slide in a second guide member 14 provided on the connecting plate 1; The sliding member 2 is also connected to a second transverse rod 4, and a third cam shaft 11 is rotatably mounted on the second transverse rod 4; The side plate 12 is provided with a third inclined groove 1201 and a vertical groove 1202, and the third protrusion 11 can roll in the third inclined groove 1201 and the vertical groove 1202, and when the third protrusion 11 rolls in the third inclined groove 1201, it can drive the two groups of side plates 12 to move closer to each other.

[0042] When the second protrusion 9 is at one end of the first inclined groove 102 away from the second inclined groove 103, the third protrusion 11 is at one end of the vertical groove 1202 away from the third inclined groove 1201, so that when the sliding member 2 moves downward and the second protrusion 9 moves in the first inclined groove 102, the third protrusion 11 can slide in the vertical groove 1202. At this time, the distance between the two sets of side plates 12 remains unchanged, and the clamping assembly remains in a released state, that is, when the sliding member 2 is pulled downward, the elastic assembly only performs an energy storage action without changing the state of the clamping assembly, so that the clamping assembly is more stable during the energy storage process.

[0043] When the first spring 5 releases its elastic potential energy and actively drives the second protrusion 9 to move along the second inclined groove 103, the third protrusion 11 can move in the third inclined groove 1201. At this time, the two groups of side plates 12 can move close to each other, so that the clamping assembly switches from a released state to a clamping state, and maintains a relatively stable clamping state for the aluminum alloy, thereby realizing the state switching of the clamping assembly.

[0044] Based on the above arrangement, the two sets of side panels 12 can have higher stability in different position states, so that on the one hand, when loading the aluminum alloy, the aluminum alloy can be placed in the clamping assembly more conveniently for easy operation; on the other hand, when the clamping assembly performs the pre-clamping state on the aluminum alloy, the pre-clamping state can be made more stable, thereby avoiding separation of the aluminum alloy from the clamping assembly, resulting in subsequent failure of sealing the aluminum alloy.

[0045] See also Figure 8~Figure 9 The clamping assembly is provided with multiple groups and connected to the connecting shaft 19 installed on the side plate 12, and the clamping assembly is formed with abutment members 21 that cooperate with each other and can clamp the aluminum alloy; The clamping assembly includes a connecting rod 20 slidably connected to the connecting shaft 19, one end of the connecting rod 20 is connected to the abutment member 21, and the other end is provided with a connecting frame 22, the connecting frame 22 is connected to the connecting shaft 19 via a second spring 23, and the connecting frame 22 is provided with an abutment portion 24; The abutment roller 18 connected to the driving assembly can cooperate with the abutment portion 24 to drive the two groups of the abutment members 21 that cooperate with each other to move away from each other.

[0046] In the initial state, the second spring 23 is in a natural state. At this time, the two groups of side plates 12 are in a state of being away from each other, so that there is a larger gap between the two groups of abutment members 21, so as to facilitate the placement of the aluminum alloy to be sealed between the two groups of abutment members 21. When the two groups of side plates 12 move towards each other, the two groups of connecting shafts 19 connected thereto can be driven to move towards each other until the two groups of abutment members 21 abut against the aluminum alloy. The two groups of side plates 12 can further move towards each other, so that the second spring 23 is stretched. At this time, the abutment member 21 can achieve abutment against the aluminum alloy under the coordinated cooperation of the first spring 5 and the second spring 23, thereby ensuring the connection stability between the abutment member 21 and the aluminum alloy.

[0047] Furthermore, the provision of the second spring 23 can also enable the aluminum alloy to be clamped by changing the stretching amount of the second spring 23 when aluminum alloys of different widths (or thicknesses) are placed between the two sets of abutment members 21. That is, when clamping aluminum alloys of different widths (or thicknesses), the abutment members 21 have the ability to stably clamp them, thereby improving the applicability of the device in processing different types of aluminum alloys.

[0048] It is worth noting that the stiffness of the first spring 5 is much greater than the stiffness of the second spring 23 .

[0049] See also Figure 3 , Figure 8~Figure 10 The driving component is arranged on the connecting plate 1, and the driving component can sequentially drive multiple groups of clamping components to perform the release and clamping actions on the aluminum alloy, and the driving component can lock the position of the elastic component; The driving assembly includes an electric telescopic rod 15 fixedly mounted on the connecting plate 1, a first bracket 16 and a second bracket 17 are connected to the action end of the electric telescopic rod 15, and the second bracket 17 is rotatably connected to the abutting roller 18; The first bracket 16 is formed with an inclined surface 1601 and a vertical surface 1602; The driving assembly also includes a horizontal groove 104 connected to the end of the second inclined groove 103 away from the first inclined groove 102 and a slide groove 601 arranged on the transverse member 6, and a slider 7 is slidably installed in the slide groove 601, and the slider 7 is slidably connected to the first guide member 10 arranged on the connecting plate 1, so that when the sliding member 2 is raised or lowered, it will not drive the slider 7 to move, and the movement of the slider 7 can drive the transverse member 6 to move, and a first cam 8 is rotatably installed on the slider 7, and the first cam 8 cooperates with the inclined surface 1601 to drive the second cam 9 to enter the horizontal groove 104.

[0050] After the multiple groups of clamping components complete the pre-clamping of the aluminum alloy, the lifting device can drive the aluminum alloy to be immersed below the liquid level of the sealing agent solution. At this time, by controlling the action of the electric telescopic rod 15, the first bracket 16 and the second bracket 17 can be moved downward, and during the downward movement of the first bracket 16 and the second bracket 17, the inclined surface 1601 on the first bracket 16 will preferentially abut against the first convex shaft 8. At this time, the first convex shaft 8 can move along the length direction of the first guide member 10 under the drive of the inclined surface 1601, so that the two groups of transverse members 6 can They move towards each other and make the second cam 9 enter into the horizontal groove 104, then the first bracket 16 continues to move downward to make the first cam 8 abut against the vertical surface 1602, at which time the second cam 9 is locked in the horizontal groove 104. At this time, the height of the sliding member 2 is locked, and the distance between the two sets of side plates 12 is locked, so as to prevent the two sets of side plates 12 from moving away from each other when the abutment roller 18 acts on the abutment portion 24, causing multiple sets of clamping components to perform a release action at the same time, thereby separating the clamping components from the aluminum alloy, and the aluminum alloy sinks into the immersion tank.

[0051] After the position of the side plate 12 is locked, the abutment roller 18 can continue to move downward until the abutment roller 18 abuts against the abutment portion 24. The abutment portion 24 can pull the connecting frame 22 to move away from the aluminum alloy, so that the two groups of abutment members 21 located at the upper portion can move away from each other. At this time, the two groups of abutment members 21 located at the upper portion can be separated from the aluminum alloy, and the area on the aluminum alloy covered by the two groups of abutment members 21 can be exposed, so that the area can also be sealed, and the remaining abutment members 21 can still maintain the abutment state with the aluminum alloy to ensure the stability of the aluminum alloy in the sealing solution.

[0052] Furthermore, as the abutment roller 18 continues to move downward, the abutment members 21 on the multiple clamping assemblies can be separated from the aluminum alloy in sequence, so that the area on the abutment members 21 covered by the abutment members 21 can fully contact with the sealing solution to achieve a sealing effect.

[0053] Through the above arrangement, when the electric telescopic rod 15 moves, the two groups of side plates 12 can be locked first to prevent the two groups of side plates 12 from moving away from each other when the abutment roller 18 acts on the abutment portion 24, causing the multiple groups of clamping components to perform a release action at the same time, so that the clamping components are separated from the aluminum alloy, and the aluminum alloy sinks into the immersion tank. In the process that the abutment roller 18 cooperates with the abutment portion 24 in turn, the abutments 21 on the multiple groups of clamping components can be separated from the aluminum alloy in turn, so that the area of ​​the aluminum alloy covered by the abutment members 21 is exposed, while ensuring that the remaining abutment members 21 can maintain the clamping of the aluminum alloy, that is, while ensuring that the area of ​​the aluminum alloy covered by the abutment members 21 can be sealed, it is ensured that the aluminum alloy can also be clamped by other abutment members 21, so that the aluminum alloy has a certain stability, improves the comprehensiveness of the aluminum alloy sealing, and ensures its corrosion resistance.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An improved nickel-free medium-temperature sealing agent for aluminum alloys resistant to salt spray, characterized in that: Including the following raw materials by weight: 60-90 parts of sodium silicate, 10-20 parts of sodium chloride, 15-25 parts of polyvinyl alcohol, 30-40 parts of sodium formate, 5-15 parts of sodium sulfate, 1-8 parts of surfactant, and 0.3-0.5 parts of silane coupling agent.

2. The improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 65-80 parts of sodium silicate, 12-17 parts of sodium chloride, 18-22 parts of polyvinyl alcohol, 32-36 parts of sodium formate, 8-11 parts of sodium sulfate, 2-5 parts of surfactant and 0.35-0.4 parts of silane coupling agent.

3. The improved aluminum alloy salt spray resistant nickel-free medium temperature sealing agent according to claim 2, characterized in that: The invention comprises the following raw materials in parts by weight: 70 parts of sodium silicate, 15 parts of sodium chloride, 20 parts of polyvinyl alcohol, 34 parts of sodium formate, 10 parts of sodium sulfate, 3 parts of surfactant and 0.38 parts of silane coupling agent.

4. A sealing process, characterized in that: Using the improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent as described in any one of claims 1 to 3 comprises the following steps: Step 1: Adding distilled water to the improved aluminum alloy salt spray resistant nickel-free medium-temperature sealing agent according to any one of claims 1 to 3 to prepare a sealing solution; Step 2: Immerse the aluminum alloy to be sealed in the sealing solution and let it stand for 30 minutes; Step 3: Take out the soaked aluminum alloy and dry it.

5. A sealing device, characterized in that: The sealing process as claimed in claim 4 comprises: an immersion tank, a lifting device and a clamping device, wherein the lifting device can drive the aluminum alloy clamped by the clamping device to move in a vertical direction in space; The clamping device comprises: A connecting plate (1) is detachably connected to the lifting device, and the connecting plate (1) is provided with two sets of side plates (12) capable of relative movement; A clamping assembly, which is provided with a plurality of groups and is connected to a connecting shaft (19) mounted on the side plate (12), and the clamping assembly is provided with abutment members (21) that cooperate with each other and are capable of clamping the aluminum alloy; An energy storage mechanism is arranged on the connecting plate (1), the energy storage structure comprising an elastic component and a guide groove, the elastic component cooperates with the guide groove to enable the two groups of side plates (12) to move; A driving component is arranged on the connecting plate (1), and the driving component can sequentially drive multiple groups of clamping components to perform release and clamping actions on the aluminum alloy, and the driving component can lock the position of the elastic component.

6. A sealing device according to claim 5, characterized in that: The elastic component comprises a guide groove (101) arranged on the connecting plate (1), a sliding member (2) is slidably installed in the guide groove (101), a first transverse rod (3) is connected to the sliding member (2), a transverse member (6) is slidably installed on the first transverse rod (3), and a first spring (5) is sleeved on the first transverse rod (3), one end of the first spring (5) is connected to the end of the first transverse rod (3), and the other end is connected to the transverse member (6); The elastic component further comprises a second convex shaft (9) rotatably connected to the transverse member (6), and the second convex shaft (9) is capable of rolling in the guide groove.

7. A sealing device according to claim 6, characterized in that: The guide groove comprises a first inclined groove (102) and a second inclined groove (103) arranged on the connecting plate (1); the first inclined groove (102) is connected to the second inclined groove (103); and an outer protrusion protruding toward the guide groove (101) is formed at the connection between the first inclined groove (102) and the second inclined groove (103).

8. The sealing device according to claim 6, characterized in that: The sliding member (2) is also connected to a second transverse rod (4), and a third cam shaft (11) is rotatably mounted on the second transverse rod (4); The side plate (12) is provided with a third inclined groove (1201) and a vertical groove (1202), and the third convex shaft (11) can roll in the third inclined groove (1201) and the vertical groove (1202), and when the third convex shaft (11) rolls in the third inclined groove (1201), it can drive the two groups of side plates (12) to move towards each other.

9. The sealing device according to claim 7, characterized in that: The clamping assembly comprises a connecting rod (20) slidably connected to the connecting shaft (19), one end of the connecting rod (20) is connected to the abutment member (21), and the other end is provided with a connecting frame (22), the connecting frame (22) and the connecting shaft (19) are connected via a second spring (23), and an abutment portion (24) is provided on the connecting frame (22); The abutment roller (18) connected to the driving assembly can cooperate with the abutment portion (24) to drive the two matched groups of abutment members (21) to move away from each other.

10. A sealing device according to claim 9, characterized in that: The driving assembly comprises an electric telescopic rod (15) fixedly mounted on the connecting plate (1), the action end of the electric telescopic rod (15) being connected to a first bracket (16) and a second bracket (17), the second bracket (17) being rotatably connected to the abutment roller (18); An inclined surface (1601) and a vertical surface (1602) are formed on the first bracket (16); The driving assembly also includes a horizontal groove (104) connected to one end of the second inclined groove (103) away from the first inclined groove (102) and a slide groove (601) arranged on the transverse member (6), a slider (7) is slidably installed in the slide groove (601), the slider (7) is slidably connected to the first guide member (10) arranged on the connecting plate (1), and a first convex shaft (8) is rotatably installed on the slider (7), the first convex shaft (8) cooperates with the inclined surface (1601) to drive the second convex shaft (9) into the horizontal groove (104).

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