Alkali liquor tank for low-power erosion of aluminum alloy

Abstract

The utility model discloses a lye tank for aluminum alloy low-power erosion, belongs to the technical field of aluminum alloy erosion, and solves the problems that an existing aluminum alloy low-power erosion lye tank is poor in heating effect and cleaning is difficult due to the fact that alkali residues adhere to the inner wall of the lye tank. The inner groove plates of the inner groove are fixedly connected to the inner side of the top of the outer groove, the four inner groove plates incline inwards and downwards, every two opposite inner groove plates are in a V shape, the bottom of the inner groove is suspended and not connected with the outer groove, lining plates matched with the inner groove plates are clamped on the inner groove plates, a waste discharge hole is formed in the lower portion of one inner groove plate and connected with a waste discharge pipe, the waste discharge pipe extends out of the outer groove, and the waste discharge pipe is connected with the waste discharge hole. A water injection hole and a water outlet hole are formed in the outer tank, a rectangular box body is arranged at the bottom of the outer tank, and a heating pipe is arranged in the rectangular box body. According to the utility model, the problem that alkaline residues are firmly adhered and are difficult to clean is solved, the concentration of alkaline liquor is effectively ensured, the standardization and accuracy of tests in any season are ensured, and the safety is also remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of aluminium alloy corrosion, specifically relates to a caustic lye tank for aluminium alloy macro etching. BACKGROUND

[0002] Aluminium alloy is widely used in aerospace, automobile manufacturing, construction engineering and many other fields due to its small density, high specific strength, good corrosion resistance and other advantages. In the production and processing of aluminium alloy, the detection of its internal quality is crucial, and macro etching detection is a common and effective detection method, which can clearly show the macro features of aluminium alloy, such as grain size, organization form and defect distribution, and plays a key role in evaluating the quality and performance of aluminium alloy materials.

[0003] At present, the method of alkali etching and acid washing is often used for aluminium alloy macro etching, so a proper caustic lye tank is needed for alkali etching of samples. Small aluminium processing enterprises usually use stainless steel basins or containers to directly hold caustic lye, and put the material frame into the caustic lye by hand to complete the etching of the sample. The caustic lye is usually disposable, and there is no need to clean the container. However, large aluminium processing enterprises usually set up large caustic lye tanks to repeatedly use the caustic lye, which may cause accumulation of alkali residues in the caustic lye tank.

[0004] Generally, the production units of aluminium industry use fixed caustic lye tanks equipped with electric hoists for testing. Since the amount of caustic lye is large and repeated testing is needed, the caustic lye is not replaced after each etching, but the concentration of the remaining caustic lye is adjusted to the specified concentration for further testing. A large amount of alkali residues will be formed during the etching of aluminium alloy in caustic lye, and the residues may adhere to the side walls and bottom of the caustic lye tank after repeated testing. The adhesion of the residues is very firm, and the residues become very hard after a long time, which makes it difficult to clean the residues. When cleaning, the caustic lye needs to be emptied, and the operator needs to use impact drills and steel picks to knock off the residues bit by bit. Since the caustic lye tank must be equipped with ventilation facilities, and the electric hoist for sampling is also used, the space is very small, the operation is difficult, the labor intensity is high, and there is a great safety risk.

[0005] In addition, the original caustic lye tank lacks a heating device, and the caustic lye may precipitate when the room temperature is too low. Therefore, other auxiliary heating equipment such as electric furnaces needs to be used, which may cause electrical safety hazards. The above problems are common in the industry. Therefore, it is necessary to develop a caustic lye tank for aluminium alloy macro etching, which can heat, facilitate operation, especially facilitate cleaning of alkali residues, reduce labor intensity and reduce safety risks. SUMMARY

[0006] The utility model aims at providing a caustic lye tank for aluminium alloy macro etching, to solve the problems of poor heating effect of the current caustic lye tank for aluminium alloy macro etching and difficulty in cleaning the residues adhered to the inner wall of the caustic lye tank.

[0007] The technical scheme of the utility model discloses: a kind of caustic lye tank for aluminum alloy low multiple erosion, including inner tank and outer tank, outer tank is hollow cubic structure, inner tank includes four inner tank plates, inner tank plate is fixedly connected in outer tank top inner side, four inner tank plates are inclined inwards and downwards, opposite two inner tank plates are V-shaped, form an inner tank tank body with upper opening, periphery and lower part sealing, inner tank bottom is suspended and not connected with outer tank, lining plate is clamped in inner tank plate, one of inner tank plate lower part is equipped with waste hole, waste hole penetrates lining plate on its same surface, waste hole is connected with waste pipe, waste pipe extends out of outer tank, water injection hole and water outlet are provided on outer tank, rectangular box is provided in outer tank bottom, heating pipe is provided in rectangular box.

[0008] As a further improvement of the utility model, a stirring rod and a temperature probe are respectively arranged in the outer tank.

[0009] As a further improvement of the utility model, a support rod is arranged between the inner tank plate and the inner side wall of the outer tank.

[0010] As a further improvement of the utility model, a temperature control meter is arranged on the rectangular box, and the temperature control meter is connected with a switch.

[0011] As a further improvement of the utility model, a support column is arranged at the bottom of the rectangular box.

[0012] As a further improvement of the utility model, an upper cover plate is arranged at the top of the outer tank.

[0013] The utility model has the advantages that the utility model is directed to the problem that the current caustic lye tank for aluminum alloy low multiple erosion is not equipped with a special heating device, the heating effect is poor, there is an electrical safety hazard, and the alkali residue adheres to the inner wall of the caustic lye tank, which causes cleaning difficulties.

[0014] The utility model has the characteristics of simple manufacturing and convenient use, the original common square tank side wall is changed into an inclined side wall, a lining plate is installed on the side wall, the cleaning tank is cleverly converted into a cleaning lining plate, and the lining plate can be pulled out, which solves the problem that the alkali residue is firmly adhered and difficult to clean. The heating device is additionally installed, the water bath heating principle is adopted, the use of a self-connected heater is avoided, the concentration of the caustic lye is effectively ensured, the standardization and accuracy of tests in any season are ensured, and the safety is significantly improved. DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model.

[0016] In the figure: 1 - water injection hole; 2 - outer tank; 3 - waste pipe; 4 - stirring rod; 5 - water outlet hole; 6 - rectangular box; 7 - heating pipe; 8 - support column; 9 - upper cover plate; 10 - inner tank; 11 - lining plate; 12 - inner tank plate; 13 - support rod; 14 - waste hole; 15 - temperature probe; 16 - temperature controller; 17 - switch. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0018] As Figure 1 shown, an alkali tank for low-magnification etching of aluminum alloy includes an inner tank 10 and an outer tank 2. The outer tank 2 is a hollow cuboid structure. The inner tank 10 includes four inner tank plates 12, which are fixedly connected to the inner side of the top of the outer tank 2. The four inner tank plates 12 are inclined downward inwardly. Opposite two of the inner tank plates 12 are in a V shape, forming an inner tank 10 body with an upper opening, a sealed periphery, and a sealed lower part. The bottom of the inner tank 10 is suspended and not connected to the outer tank 2. A lining plate 11 is clamped on each of the inner tank plates 12. One of the inner tank plates 12 is provided with a waste hole 14 at the lower part. The waste hole 14 penetrates through the lining plate 11 on the same surface. The waste hole 14 is connected to a waste pipe 3, which extends out of the outer tank 2. The outer tank 2 is provided with a water injection hole 1 and a water outlet hole 5. The bottom of the outer tank 2 is provided with a rectangular box 6, which is provided with a heating pipe 7.

[0019] The outer tank 2 is provided with a stirring rod 4 and a temperature probe 15. Support rods 13 are arranged between the inner tank plates 12 and the inner side wall of the outer tank 2. The rectangular box 6 is provided with a temperature controller 16, which is connected to a switch 17. The bottom of the rectangular box 6 is provided with a support column 8. The top of the outer tank 2 is provided with an upper cover plate 9.

[0020] Example 1,

[0021] The utility model mainly consists of an inner tank 10 and an outer tank 2. The inner tank 10 is filled with alkali solution and used for etching a sample. The outer tank 2 is filled with water and used for water bath heating. The inner tank 10 is firmly installed in the outer tank 2. The top edges of the inner tank 10 are firmly welded to the top edges of the outer tank 2 without any gap. The bottom of the inner tank 10 is suspended and not connected to the outer tank 2. This design allows water flow in the outer tank 2 to be communicated, thereby better playing the role of water bath.

[0022] The inner tank 10 is welded by four inner tank plates 12, made of stainless steel, and firmly welded with the top edges of the outer tank 2, without gaps, and inclined inwardly and downwardly on four sides, with the opposite two inner tank plates 12 forming a V shape, constituting an upper opening, and a sealed inner tank 10 body around and below. Each inner tank plate 12 has a dovetail groove in the middle for connecting the lining plate 11, and each inner tank plate 12 has a lining plate 11 that matches and covers the inner tank plate 12, with the dovetail groove on the back of the lining plate 11 corresponding to the dovetail groove on the inner tank plate 12, and the lining plate 11 being inlaid on the inner tank plate 12 through the dovetail groove, and the four lining plates 11 being tightly combined into a whole lining, and the lining plate 11 being made of polytetrafluoroethylene.

[0023] Among the four inner tank plates 12, the front inner tank plate 12 has a waste discharge hole 14 at the lower part, and the corresponding front lining plate 11 also has the same waste discharge hole 14, and the waste discharge hole 14 is connected with a waste discharge pipe 3, which is welded with the outer tank 2 and extends out of the outer tank 2, for discharging the lye and waste residue.

[0024] The outer tank 2 is a cubic structure, composed of six stainless steel plates, one of which is the upper cover plate 9, and the remaining five plates are welded into a tank body, and the tank body top of the outer tank 2 is firmly connected with the inner tank plate 12 of the inner tank 10, and there are four support rods 13 in the middle, welded between the inner and outer tanks, to further support the inner tank 10.

[0025] The inner side of the outer tank 2 is provided with a temperature probe 15 and a stirring rod 4 for testing water temperature and promoting uniform water temperature, to better play the role of water bath. The outer tank 2 has a water inlet hole 1 above the front tank wall and a water outlet hole 5 below. The lower part of the outer tank 2 is a rectangular box 6, in which a heating pipe 7 is arranged for heating the water bath, and the front of the rectangular box 6 is provided with a temperature control meter 16 and a power switch 17. The lower part of the rectangular box 6 has support columns 8 at the four corners for supporting the whole device.

[0026] The use process of the device is as follows:

[0027] When used for the first time, fill the outer tank 2 with water through the water inlet hole 1 on the outer tank 2, turn on the power switch 17, set the temperature control meter 16 according to the needs, block the waste discharge hole 14 on the inner tank 10 from the inside and close it, and do not block the waste discharge hole 14 from the inside to prevent the alkali residue from blocking the waste discharge hole 14. After the temperature reaches the set value, add the prepared lye into the inner tank 10, put the sample frame into the lye, cover the upper cover plate 9 and start timing, and take out the sample frame after the sample corrosion is completed. Subsequent use only needs to add alkali and water according to the actual situation.

[0028] When the alkali residue is cleaned, the waste discharge hole 14 is connected with the waste discharge pipe 3, and the alkali solution is discharged by the waste discharge pipe 3, and the alkali solution can be recycled. Because of the adhesion of the alkali residue, generally, a steel drill or other tools is needed to be inserted from the outside of the waste discharge pipe 3 to knock the blockage in the inside of the waste discharge hole 14, and then the external force is used to pull out each lining plate 11, so that the alkali residue adhered together is broken with the lining plate 11, and then the alkali residue on the lining plate 11 is cleaned, the loose alkali residue remaining in the inner groove 10 is dug out, the inner groove 10 is washed with water, and the cleaned lining plate 11 is installed, the waste discharge hole 14 is blocked to close the waste discharge hole 14, and then the cleaning of the alkali residue is completed.

Claims

1. An alkali tank for macroetching of an aluminum alloy, characterized by: The utility model relates to a kind of water heating device, including inner groove (10) and outer groove (2), the outer groove (2) is hollow cubic structure, inner groove (10) includes four inner groove plates (12), and inner groove plate (12) is fixedly connected in the inner side of outer groove (2) top, four inner groove plates (12) are inclined inwards and downwards, and opposite two inner groove plates (12) are V-shaped, and form an inner groove (10) tank body with upper opening, sealing four sides and lower part, the bottom of inner groove (10) is suspended and not connected with outer groove (2), and lining plate (11) is clamped with its matching on inner groove plate (12), one of inner groove plate (12) is equipped with waste hole (14) in lower part, waste hole (14) penetrates lining plate (11) with its same surface, waste pipe (3) is connected with waste hole (14), and waste pipe (3) extends out of outer groove (2), water injection hole (1) and water outlet (5) are equipped on outer groove (2), and rectangular box (6) is equipped on the bottom of outer groove (2), and heating pipe (7) is equipped in rectangular box (6).

2. The caustic tank for macroetching of an aluminum alloy according to claim 1, characterized by: The outer groove (2) is respectively equipped with stirring rod (4) and temperature probe (15) in.

3. The caustic tank for macroetching of an aluminum alloy according to claim 1 or 2, characterized by: Supporting rod (13) is equipped between the inner groove plate (12) and the inner side wall of outer groove (2).

4. The caustic tank for macroetching of an aluminum alloy according to claim 1, characterized by: Temperature control meter (16) is equipped on the rectangular box (6), and switch (17) is connected with temperature control meter (16).

5. The caustic tank for macroetching of an aluminum alloy according to claim 4, characterized by: Supporting column (8) is equipped on the bottom of rectangular box (6).

6. The caustic tank for macroetching of an aluminum alloy according to claim 1, characterized by: Upper cover plate (9) is equipped on the top of outer groove (2).

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