Tool for rapidly detecting front pinhole degree of aluminum alloy smelting furnace

Abstract

The utility model discloses an aluminum alloy smelting furnace front pinhole degree rapid detection tool, which relates to the technical field of aluminum alloy smelting, and comprises an upper base and a section block, a lower base is fixed at the lower end of the upper base, a positioning block is arranged at one end in the upper base, inclined locking surfaces are symmetrically arranged on two sides of the upper base, the section block is reversely matched with the locking surfaces, and the section block is fixed on the upper base. The section block is embedded into the upper base, a positioning pin is fixed at the upper end of the upper base, a scraping plate is rotatably sleeved on the positioning pin, the front end of the scraping plate is of a long thin-wall structure, and a semicircular sample area is arranged at the upper part of the section block. The problem of uneven scraping thickness caused by unstable single handheld operation can be solved, judgment errors are completely eradicated, meanwhile, the tool is stable and excellent in detection effect, low in manufacturing cost and suitable for application and popularization, the ejector rod is arranged and connected with an external air source to push the ejector rod to rise, a sample is ejected out, and the burn problem caused by manual mistaken touch is avoided.

Description

Technical Field

[0001] The utility model relates to the field of aluminum alloy smelting, in particular to a tool for quickly detecting pinhole degree in front of an aluminum alloy smelting furnace. Background Art

[0002] Aluminum alloy smelting is a key process in aluminum alloy casting. The quality of its smelting directly determines the final quality of the casting product. During the aluminum alloy smelting process, the high-temperature aluminum alloy liquid easily absorbs water vapor in the surrounding air, forming pinholes in the casting after cooling. Pinholes in the casting are the root cause of poor surface treatment and internal quality of the casting. Therefore, pinhole degree is often used as an important inspection item in aluminum alloy smelting inspection.

[0003] At present, the pinhole degree of aluminum alloy smelting is detected by expensive hydrogen measuring instruments. This equipment is expensive, has strict detection requirements, and has high operating costs. It is not easy to promote its use in small and micro enterprises. Therefore, we propose a rapid pinhole degree detection tool for aluminum alloy smelting furnace. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fast pinhole detection tool in front of an aluminum alloy melting furnace, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool for rapid pinhole detection in front of an aluminum alloy melting furnace, comprising an upper base and a mold block, a lower base fixed to the lower end of the upper base, a positioning block provided at one end of the upper base, and symmetrical oblique locking surfaces on both sides, the mold block cooperates with the locking surfaces in reverse and is embedded in the upper base, a positioning pin is fixed to the upper end of the upper base, and a scraper is rotated to be sleeved on the positioning pin, the front end of the scraper is a long thin-walled structure, a semicircular sample area is provided on the upper part of the mold block, and the positioning block and the oblique matching structure are provided to achieve accurate and firm positioning, and a scraper for fixed rotation and scraping can evenly remove the surface of the molten sample, facilitate observation, and eliminate judgment errors.

[0006] Furthermore, an air duct is provided on the upper part of the lower base, a movable ejector is provided on the air duct, a sealing groove is provided around the air duct, a sealing ring is embedded in the sealing groove, the ejector passes through the upper base and the mold block to the sample area, and a sealed pneumatic ejector is provided to automatically eject the sample without manual removal.

[0007] Furthermore, a counterclockwise overflow trough is provided on the upper part of the mold block, and a collecting trough is provided in the overflow trough. The overflow trough and the overflow trough are provided to collect and store the scraped molten surface to avoid splashing and hurting people.

[0008] Furthermore, the airway is communicated with the air pipe, and the air pipe is connected to an external air source. The air pipe and the airway are provided to provide a driving force for the lifting of the push rod.

[0009] Furthermore, the upper base, the lower base, the scraper and the push rod are made of 45# steel, and the mold block is made of refractory powder. The upper base, the lower base, the scraper and the push rod are made of 45# steel to maintain strength and improve service life. The mold block is made of refractory powder mainly to slow down heat dissipation, extend the solidification time of high-temperature aluminum alloy liquid, and facilitate long-term full analysis of pinholes in the aluminum alloy liquid.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the rapid pinhole detection tooling in front of an aluminum alloy melting furnace has the following advantages:

[0011] 1. By setting up a sample area on the mold block, after the high-temperature molten aluminum is poured, the scraper rotating around the positioning pin is used to gently scrape the surface of the molten aluminum to reduce the surface tension of the molten aluminum. Under the action of the pressure difference, the dissolved hydrogen will slowly precipitate as needle-shaped spots on the surface of the molten aluminum, which is very convenient for observation and judgment. At the same time, the fixed-stake scraping method can solve the problem of uneven scraping thickness caused by the instability of single handheld operation, and eliminate judgment errors. The tooling has stable and excellent detection effect, low cost, and is suitable for popularization and use;

[0012] 2. By setting up a push rod, connecting it to an external air source, and pushing the push rod up, the sample can be ejected, avoiding burns caused by manual accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 3 This is a cross-sectional view of the utility model;

[0016] Figure 4 This is a schematic diagram of the lower base structure of the utility model.

[0017] In the figure: 1 upper base, 11 positioning pin, 12 positioning block, 13 locking surface, 2 lower base, 21 air duct, 22 sealing groove, 23 sealing ring, 3 mold block, 31 sample area, 32 overflow groove, 33 collecting groove, 4 scraper, 5 ejector rod, 6 air pipe. DETAILED DESCRIPTION

[0018] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-4 This embodiment provides a technical solution: a tool for rapid pinhole detection in front of an aluminum alloy melting furnace, comprising an upper base 1 and a mold block 3. The lower end of the upper base 1 is fixed with a lower base 2. A positioning block 12 is provided at one end of the upper base 1, and symmetrical oblique locking surfaces 13 are provided on both sides. The mold block 3 cooperates with the locking surface 13 in reverse and is embedded in the upper base 1. A positioning pin 11 is fixed at the upper end of the upper base 1, and a scraper 4 is rotatably inserted into the positioning pin 11. The front end of the scraper 4 is a long thin-walled structure, and a semicircular sample area 31 is provided on the upper part of the mold block 3.

[0020] Among them: an air channel 21 is provided on the upper part of the lower base 2, and a movable push rod 5 is provided in the air channel 21. A sealing groove 22 is provided around the air channel 21, and a sealing ring 23 is embedded in the sealing groove 22. The push rod 5 passes through the upper base 1 and the mold block 3 to the sample area 31.

[0021] The upper portion of the mold block 3 is provided with a counterclockwise overflow groove 32 , and a collecting groove 33 is provided in the overflow groove 32 .

[0022] The airway 21 is connected to the trachea 6, and the trachea 6 is connected to an external air source.

[0023] Among them, the upper base 1, the lower base 2, the scraper 4 and the top rod 5 are made of 45# steel, and the block 3 is made of refractory powder.

[0024] The working principle of a fast pinhole detection tool in front of an aluminum alloy melting furnace provided by the utility model is as follows: first, the mold block 3 is pushed into the positioning block 12 in the upper base 1, and under the action of the oblique locking surface 13, the mold block 3 will be accurately fixed, and the molten aluminum alloy liquid is injected into the sample area 31 of the medium-sized block 3 in the upper base 1, and then the scraper 4 rotating around the positioning pin 11 is used to gently scrape the sample surface in a counterclockwise direction, and the excess surface alloy liquid flows along the overflow groove 32 into the collecting groove 33. As the surface tension of the sample decreases, under the action of the pressure difference, the dissolved pinholes will slowly precipitate out of the surface, and form needle-shaped spots on the surface of the sample after solidification. At this time, the pinhole degree of the aluminum alloy liquid can be judged according to the observation situation; after the detection is completed, the air pipe 6 passes through the external gas, and the gas pushes up the push rod 5 along the airway 21 in the lower base 2. The push rod 5 is raised to push out the sample. After completion, the gas is turned off to release the pressure, and the push rod 5 automatically returns to its position under the action of gravity.

[0025] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rapid pinhole detection tool for aluminum alloy melting furnace, characterized by: The invention comprises an upper base (1) and a mold block (3), wherein a lower base (2) is fixed to the lower end of the upper base (1), a positioning block (12) is provided at one end of the upper base (1), and symmetrical oblique locking surfaces (13) are provided on both sides, the mold block (3) and the locking surfaces (13) are matched in reverse order and embedded in the upper base (1), a positioning pin (11) is fixed to the upper end of the upper base (1), and a scraper (4) is rotatably sleeved on the positioning pin (11), the front end of the scraper (4) is a long thin-walled structure, and a semicircular sample area (31) is provided on the upper part of the mold block (3).

2. The rapid pinhole detection tool for aluminum alloy melting furnace according to claim 1, characterized in that: An air channel (21) is provided on the upper portion of the lower base (2), a movable ejector pin (5) is provided on the air channel (21), a sealing groove (22) is provided around the air channel (21), a sealing ring (23) is embedded in the sealing groove (22), and the ejector pin (5) passes through the upper base (1) and the mold block (3) to the sample area (31).

3. The rapid pinhole detection tool for aluminum alloy melting furnace according to claim 1, characterized in that: A counterclockwise overflow groove (32) is provided on the upper portion of the mold block (3), and a collecting groove (33) is provided in the overflow groove (32).

4. The rapid pinhole detection tool for aluminum alloy melting furnace according to claim 2, characterized in that: The airway (21) is in communication with the air pipe (6), and the air pipe (6) is connected to an external air source.

5. The rapid pinhole detection tool for aluminum alloy melting furnace according to claim 2, characterized in that: The upper base (1), the lower base (2), the scraper (4) and the top rod (5) are made of 45# steel, and the mold block (3) is made of refractory powder.

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