Alloy free line shrinkage rate detection device

Abstract

The utility model discloses an alloy free line shrinkage rate detection device, relates to the technical field of metal physical property detection, and aims to solve the problem that the detection range of an existing alloy free line shrinkage rate detection device is relatively single because the existing alloy free line shrinkage rate detection device cannot detect the alloy shrinkage rate at a specific temperature. The casting device comprises a sand box and a box cover, a cylindrical casting cavity is arranged in the sand box, the casting cavity is communicated with a pouring cup, one end of the sand box is provided with a connecting rod in a penetrating mode, one end of the connecting rod extends into the casting cavity, the connecting rod is movably connected with the sand box, and the connecting rod is connected with the box cover. A displacement detection device is arranged on the outer side of the sand box, and a probe of the displacement detection device abuts against the end, stretching out of the sand box, of the connecting rod. A temperature measuring assembly is arranged at the other end of the sand box, and one end of the temperature measuring assembly extends into the casting cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metal physical property detection, and specifically relates to an alloy free line shrinkage rate detection device. BACKGROUND

[0002] When metal is cast, volume shrinkage occurs during the process of cooling from a certain temperature to room temperature during solidification, and the solid-state shrinkage of the metal is usually measured by the linear size of the casting. When the casting occurs linear shrinkage, it is not hindered, that is, free linear shrinkage.

[0003] For example, a cast alloy free linear shrinkage rate detection device with a patent number of 202222736694.8 and a patent name of a cast alloy free linear shrinkage rate detection device is a device for detecting the free linear shrinkage rate of alloy. The first puller screw and the second puller screw are used to contact the metal liquid in the shrinkage sample cavity, so that the shrinkage amount change generated by the metal liquid during solidification can drive the first puller screw and the second puller screw, thereby realizing the purpose of detecting the free linear shrinkage rate of alloy.

[0004] However, the above-mentioned patent does not provide a temperature detection device, so the shrinkage value cannot be read until the last complete solidification after pouring starts, and the solidification time is relatively long, resulting in low detection efficiency. In addition, since the temperature change during the solidification stage is unknown, the detection of the alloy shrinkage rate at a specific temperature cannot be satisfied, resulting in a single detection range of the existing alloy free linear shrinkage rate detection device. UTILITY MODEL CONTENTS

[0005] To solve the above-mentioned problem, that is, the existing alloy free linear shrinkage rate detection device cannot satisfy the detection of the alloy shrinkage rate at a specific temperature, resulting in a single detection range, the utility model provides an alloy free linear shrinkage rate detection device, which comprises a sand box and a box cover, a cylindrical pouring cavity is arranged in the sand box, a pouring cup is communicated with the pouring cavity, a connecting rod is arranged at one end of the sand box, one end of the connecting rod extends into the pouring cavity, the connecting rod is movably connected with the sand box, a displacement detection device is arranged on the outside of the sand box, and the probe of the displacement detection device abuts against one end of the connecting rod extending out of the sand box; a temperature measurement assembly is arranged at the other end of the sand box, and one end of the temperature measurement assembly extends into the pouring cavity.

[0006] By adopting the above technical scheme, when the metal liquid is cast into the casting cavity, the metal liquid will wrap the end of the connecting rod extending into the casting cavity, with the gradual solidification of the metal liquid, the metal liquid in the casting cavity will shrink, and in the process of shrinkage, the connecting rod will also move in the direction of shrinkage, and then the displacement detection device can detect the displacement of the connecting rod, that is, the shrinkage of the metal liquid, and the temperature measuring assembly can detect the temperature of the metal liquid in the casting cavity in real time, and then only the values of the displacement detection device and the temperature measuring assembly at the same time are read, so that the shrinkage of the metal liquid at a specific temperature can be detected, and the detection range of the device is wider.

[0007] The utility model discloses further provide that: the displacement detection device includes base, be connected with displacement sensor on the base, the probe of displacement sensor with the one end of connecting rod that extends the sand box is resisted.

[0008] By adopting the above technical scheme, the base can fix the displacement sensor, so that the displacement sensor can be at the same height as the connecting rod, and the displacement detection of the connecting rod can be more accurate.

[0009] The utility model discloses further provide that: the temperature measuring assembly includes fixed frame, the fixed frame sets up at the outside of sand box, be connected with connecting piece on the fixed frame, the one end of connecting piece that faces away from the fixed frame extends into the casting cavity, connecting piece is along its length direction and is set up with the plug -in hole, and the plug -in hole open one end set up at the outside of sand box, and the plug -in hole inserts thermocouple.

[0010] By adopting the above technical scheme, the thermocouple can be used for detecting the temperature of the metal liquid, and the connecting piece can protect the thermocouple from direct contact with the metal liquid.

[0011] The utility model discloses further provide that: the one end of connecting piece that extends into the casting cavity is set up with recess.

[0012] By adopting the above technical scheme, the card slot can increase the contact area with the metal liquid, and the temperature detected by the thermocouple arranged inside the card slot can be closer to the temperature of the metal liquid.

[0013] The utility model discloses further provide that: the casting cavity is connected with the straight sprue, and the one end of the straight sprue, which faces away from the casting cavity, is connected with the sprue cup.

[0014] By adopting the above technical scheme, the metal liquid in the sprue cup can be directly cast into the casting cavity along the straight sprue, and the detection purpose is achieved.

[0015] The utility model discloses a kind of alloy free line shrinkage detection device, including sand box and box cover, the sand box is provided with cylindrical casting cavity, the casting cavity is communicated with sprue cup, the bottom of the sand box is provided with sliding box, the sliding box is slidably connected with the sliding frame of "U" type;The both ends of the sand box are slidably connected with connecting piece, one end of the connecting piece is inserted into the casting cavity, temperature measuring assembly is arranged in the connecting piece, one end of the connecting piece protruding from the sand box is fixedly connected with one end of the sliding frame, the other connecting piece is arranged in the other end of the sliding frame, and the other end of the sliding frame is slidably connected with the sliding frame, and the other end of the sliding frame is connected with displacement detection device, and the probe of the displacement detection device is on the sliding frame.

[0016] By adopting the above technical scheme, the two connecting pieces can detect the shrinkage of the metal liquid at both ends, and the installation positions of the sliding frame and the displacement detection device can integrate the shrinkage at both ends, so that the value read by the displacement detection device is the sum of the shrinkage at both ends of the metal liquid, meeting the detection of the shrinkage rate at both ends of the metal liquid.

[0017] The utility model further provides that: the displacement detection device includes a fixed plate, one end of the connecting piece is fixedly connected with the fixed plate, and a displacement sensor and a dial gauge are further connected to the fixed plate, and the probes of the displacement sensor and the dial gauge are on the sliding frame.

[0018] By adopting the above technical scheme, the displacement sensor and the dial gauge can detect the shrinkage of the metal liquid, and the shrinkage detected by the two devices can be compared to make the detected shrinkage more accurate, so that the shrinkage rate value is more accurate.

[0019] The utility model has the advantages that:

[0020] 1. By setting the hot spot, the temperature of the metal liquid in the casting cavity can be detected in real time, so that the detection range of the device is more extensive.

[0021] 2. By cooperating the sliding frame and the displacement detection device, the shrinkage at both ends of the metal liquid in the casting cavity can be integrated and detected, meeting the detection of the shrinkage rate at both ends of the metal liquid. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure in embodiment 1 is shown Figure One .

[0023] Figure 2 The structure in embodiment 1 is shownFigure Two .

[0024] Figure 3 The structure diagram in embodiment 2 is shown Figure One .

[0025] Figure 4 The structure diagram in embodiment 2 is shown Figure Two .

[0026] Figure 5 A local enlarged view at A is shown.

[0027] The figure mark: 1, sand box;11, pouring cavity;111, straight runner;12, box cover;13, connecting rod;2, displacement detection device;21, base;22, displacement sensor;23, dial indicator;24, fixed plate;3, temperature measuring assembly;31, fixing frame;311, connecting piece;3111, plug hole;3112, groove;4, thermocouple;5, pouring cup;6, sliding box;7, sliding frame. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0029] Embodiment 1

[0030] The utility model provides a kind of alloy free line shrinkage detection device, including rectangular sand box 1, there is the box cover 12 of compatible on sand box 1, sand box 1 is connect by bolt fixedly with box cover 12, pouring cavity 11 is provided in sand box 1, pouring cavity 11 is set as cylindrical, pouring cavity 11 is connected with straight runner 111, straight runner 111 is perpendicular to pouring cavity 11 setting, straight runner 111 is set out box cover 12 one end away from pouring cavity 11, and straight runner 111 still is connected with pouring cup 5 one end of being set out pouring cavity 11. Metal liquid is poured into pouring cup 5, metal liquid can flow into pouring cavity 11 along straight runner 111.

[0031] The sand box 1 is provided with a connecting rod 13 at one end, the connecting rod 13 is a cylindrical quartz rod, but is not limited to the quartz rod, and the material of the connecting rod 13 can be modified according to the melting point temperature of the alloy liquid, one end of the connecting rod 13 extends into the pouring cavity 11, the connecting rod 13 is in sliding connection with the sand box 1, and the other end of the connecting rod 13 is arranged outside the sand box 1, the outside of the sand box 1 is provided with a displacement detection device 2, the displacement detection device 2 is arranged opposite to the end of the connecting rod 13 extending out of the sand box 1, and the probe of the displacement detection device 2 abuts against the end of the connecting rod 13 extending out of the sand box 1, so that the displacement detection device 2 can detect the displacement of the connecting rod 13 when the connecting rod 13 moves.

[0032] The displacement detection device 2 comprises a base 21 arranged outside the sand box 1, and a displacement sensor 22 connected to the base 21 by bolts, the probe of the displacement sensor 22 is arranged opposite to the connecting rod 13 and abuts against the end of the connecting rod 13 extending out of the sand box 1, so that the probe moves when the connecting rod 13 moves, and the displacement of the connecting rod 13 is detected.

[0033] The metal liquid in the pouring cavity 11 can wrap the end of the connecting rod 13 extending into the pouring cavity 11 by pouring the metal liquid into the pouring cavity 11 through the pouring cup 5 and the straight sprue 111, and the shrinkage of the metal liquid in the pouring cavity 11 can drive the connecting rod 13 to move in the process of gradually solidifying the metal liquid, so that the displacement of the connecting rod 13 detected by the displacement detection device 2 is the shrinkage of one end of the metal liquid in the pouring cavity 11, and the alloy free line shrinkage rate is finally obtained by calculation.

[0034] Supposing that the alloy free line shrinkage rate is al, the length of the metal liquid at the initial temperature is L0, and the length of the metal liquid after solidification is L, the calculation formula is as follows.

[0035]

[0036] The other end of the sand box 1 is provided with a temperature measurement assembly 3, the temperature measurement assembly 3 comprises a fixing frame 31, the fixing frame 31 is an angle iron with a right angle, one end of the fixing frame 31 is welded to the side wall of the sand box 1, the fixing frame 31 is parallel to the side wall of the sand box 1, a connecting piece 311 is connected to the one end of the fixing frame 31 by bolts, one end of the connecting piece 311 is connected to the fixing frame 31, the other end of the connecting piece 311 extends into the pouring cavity 11 through the sand box 1, the connecting piece 311 is provided with a plug-in hole 3111, the plug-in hole 3111 is arranged along the length direction of the connecting piece 311, the plug-in hole 3111 is provided with an open end and a closed end, the open end of the plug-in hole 3111 is arranged outside the sand box 1, and the closed end of the plug-in hole 3111 is arranged in the pouring cavity 11.

[0037] The thermocouple 4 is inserted into the plug hole 3111, and the output end of the thermocouple 4 is arranged to extend out of the plug hole 3111, and the probe end of the thermocouple 4 is arranged to extend into the closed end of the plug hole 3111, so as to achieve the purpose of detecting the temperature of the metal liquid in the pouring cavity 11, and meanwhile, the connecting piece 311 can also protect the thermocouple 4 from being directly contacted with the metal liquid.

[0038] The connecting piece 311 is arranged at one end in the pouring cavity and is provided with a groove 3112 inwardly, the groove 3112 is located on the same section as the probe of the thermocouple 4, the groove 3112 can increase the contact area with the metal liquid, and meanwhile, the groove 3112 can also reduce the spacing between the metal liquid and the thermocouple 4, so that the temperature value detected by the thermocouple 4 can be closer to the temperature of the metal liquid, and the detection error is reduced.

[0039] The output end of the thermocouple 4 and the displacement sensor 22 is also commonly connected with a display control device, which can adopt a PLC programming controller in the prior art, and only needs to receive and display the detection values of the thermocouple 4 and the displacement sensor 22, and details are not repeated here.

[0040] By arranging the thermocouple 4, the temperature of the metal liquid in the pouring cavity 11 can be detected in real time, and the cooperation of the connecting rod 13 and the displacement sensor 22 can realize the detection of the shrinkage of one end of the metal liquid, and only the values of the displacement detection device 2 and the temperature measuring assembly 3 need to be read at the same time, so that the shrinkage of the metal liquid at a specific temperature can be detected, and then the free linear shrinkage rate of the alloy at this temperature can be obtained, so that the detection range of the device is wider.

[0041] Embodiment 2

[0042] The utility model discloses still proposed a kind of alloy only shrinkage rate detection device, including rectangular sand box 1, sand box 1 is provided with the box cover 12 of adaptation, sand box 1 and box cover 12 are connected by bolt fixedly, sand box 1 is provided with pouring cavity 11, pouring cavity 11 is set as cylindrical type, pouring cavity 11 is connected with direct sprue 111, direct sprue 111 is perpendicular to pouring cavity 11 setting, direct sprue 111 is set in the middle position of pouring cavity, direct sprue 111 is set in the end of pouring cavity 11 away from pouring cavity 11 and extends out of box cover 12, and direct sprue 111 still is connected with sprue bushing 5 in the end of pouring cavity 11 extending. Metal liquid is casted into sprue bushing 5, and metal liquid can flow into pouring cavity 11 along direct sprue 111.

[0043] The bottom of the sand box 1 is welded with a rectangular sliding box 6, the sliding box 6 is provided with a slide way parallel to the long side of the sand box 1, and the sliding box 6 is slidably connected with a sliding frame 7 through the slide way. The sliding frame 7 is arranged in a "U" shape, and the two ends of the slide way are provided with slide sleeves for positioning. The slide sleeves are fixedly connected to the sliding box 6, and the sliding frame 7 penetrates through the two slide sleeves.

[0044] Two ends of the sand box 1 are slidably connected with connecting pieces 311, the connecting pieces 311 are arranged through the sand box 1, one end of the connecting pieces 311 extends into the pouring cavity 11, a plug-in hole 3111 is arranged in one of the connecting pieces 311, the plug-in hole 3111 is open at one end and closed at the other end, the plug-in hole 3111 is arranged along the length direction of the connecting piece 311, the closed end of the plug-in hole 3111 is arranged inside the pouring cavity 11, a temperature measuring assembly 3 is plugged into the plug-in hole 3111, the temperature measuring assembly 3 comprises a thermocouple 4, the probe of the thermocouple 4 extends into the closed end of the plug-in hole 3111, so that the thermocouple 4 can detect the temperature of the metal liquid in the pouring cavity 11.

[0045] The end of the connecting piece 311, in which the thermocouple 4 is not arranged, extending out of the sand box 1 is threadedly connected with one end of the sliding frame 7, so that the movement of the connecting piece 311 can drive the sliding frame 7 to move. The end of the connecting piece 311, in which the thermocouple 4 is arranged, extending out of the sand box 1 is arranged through the other end of the sliding frame 7 and is slidably connected with the sliding frame 7, and the end extending out of the sliding frame 7 is threadedly connected with a displacement detecting device 2, and the probe of the displacement detecting device 2 abuts against the sliding frame 7.

[0046] The displacement detecting device 2 comprises a fixed plate 24, the fixed plate 24 is threadedly connected with the connecting piece 311, the fixed plate 24 is arranged perpendicularly to the pouring cavity 11, the displacement sensor 22 and the dial gauge 23 are connected with the fixed plate 24 through bolts, the dial gauge 23 is located above the displacement sensor 22, the probes of the displacement sensor 22 and the dial gauge 23 are arranged through the fixed plate 24 and abut against the sliding frame 7.

[0047] The displacement sensor 22 and the dial gauge 23 can detect the shrinkage of the metal liquid, by comparing the shrinkage detected by the two devices, the detected shrinkage can be more accurate, so that the shrinkage rate value is more accurate.

[0048] When the connecting piece 311 drives the fixed plate 24 to move, the distance between the fixed plate 24 and the sliding frame 7 changes, so that the displacement sensor 22 and the dial gauge 23 can detect the displacement of the connecting piece 311, that is, the shrinkage of the metal liquid in the pouring cavity 11, and when the other connecting piece 311 drives the sliding frame 7 to move, the distance between the fixed plate 24 and the sliding frame 7 also changes, so that the displacement sensor 22 and the dial gauge 23 can also detect the displacement of the other connecting piece 311, that is, the shrinkage of the metal liquid at the other end in the pouring cavity 11.

[0049] Through the installation positions of the sliding frame 7 and the displacement detecting device 2, the shrinkages at both ends can be integrated together, so that the value read by the displacement detecting device 2 is the sum of the shrinkages at both ends of the metal liquid, which meets the detection of the shrinkage rate of the metal liquid at both ends. The thermocouple 4 can meet the purpose of detecting the temperature of the metal liquid in the pouring cavity 11.

[0050] The output end of the thermocouple 4 and the displacement sensor 22 is also connected with a display control device, which can be a PLC programming controller in the prior art, and only needs to receive and display the detection values of the thermocouple 4 and the displacement sensor 22, and details are not described here

[0051] In summary, the utility model discloses a hot spot couple can be cast cavity 11 in the metal liquid temperature real -time detection can satisfy the detection of metal liquid shrinkage at a specific temperature, make the detection range of the device more extensive. Through the cooperation of the sliding frame 7 and the displacement detection device 2, the shrinkage of the metal liquid at both ends in the casting cavity 11 can be integrated and detected, and the shrinkage of the metal liquid at both ends can be detected.

[0052] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model, and in particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0053] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] In addition, it also needs to be explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. It can be mechanically connected, or it can be electrically connected. It can be directly connected, or it can be indirectly connected through an intermediate medium. It can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0055] The term "includes" or any other similar term is intended to cover non-exclusive inclusion, so that the process, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in the process, article or equipment / device.

[0056] Thus far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after these changes or replacements will all fall within the protection scope of the utility model.

Claims

1. An alloy free wire shrinkage detection device, comprising a sand box (1) and a box cover (12), a cylindrical casting cavity (11) is arranged in the sand box (1), a pouring cup (5) is communicated on the casting cavity (11), characterized in that: A connecting rod (13) is threaded through one end of the sand box (1), and one end of the connecting rod (13) extends into the casting cavity (11). The connecting rod (13) is movably connected to the sand box (1). A displacement detection device (2) is provided on the outside of the sand box (1), and the probe of the displacement detection device abuts against the end of the connecting rod (13) that extends out of the sand box (1). A temperature measuring component (3) is provided at the other end of the sand box (1), and one end of the temperature measuring component (3) extends into the casting cavity (11).

2. The alloy free wire shrinkage detection device of claim 1, wherein: The displacement detection device (2) includes a base (21), on which a displacement sensor (22) is connected. The probe of the displacement sensor (22) abuts against one end of the connecting rod (13) that extends out of the sand box (1).

3. The alloy free wire shrinkage detection device of claim 1, wherein: The temperature measuring component (3) includes a fixing frame (31), which is located on the outside of the sand box (1). A connector (311) is connected to the fixing frame (31), and one end of the connector (311) away from the fixing frame (31) extends into the casting cavity (11). The connector (311) has a insertion hole (3111) along its length, and the open end of the insertion hole (3111) is located on the outside of the sand box (1). A thermocouple (4) is inserted into the insertion hole (3111).

4. The alloy free wire shrinkage detection device of claim 3, wherein: The connector (311) has a groove (3112) at one end that extends into the casting cavity (11).

5. The alloy free wire shrinkage detection device of claim 1, wherein: The casting cavity (11) is connected to a sprue (111), and the end of the sprue (111) away from the casting cavity (11) is connected to a pouring cup (5).

6. An alloy free wire shrinkage detection device comprising a sand box (1) and a box cover (12), a cylindrical pouring cavity (11) is arranged in the sand box (1), a pouring cup (5) is communicated with the pouring cavity (11), characterized in that: The bottom of the sand box (1) is provided with a slide box (6), and a U-shaped slide frame (7) is slidably connected inside the slide box (6); the two ends of the sand box (1) are respectively slidably connected with connectors (311), one end of the connector (311) extends into the casting cavity (11), and a temperature measuring component (3) is provided inside the connector (311). One end of the connector (311) extends out of the sand box (1) and is fixedly connected to one end of the slide frame (7), and the other end of the connector (311) extends out of the sand box (1) and passes through the other end of the slide frame (7) and is slidably connected to the slide frame (7). A displacement detection device (2) is connected to one end of the connector (7), and the probe of the displacement detection device (2) touches the slide frame (7).

7. The free linear shrinkage detecting device according to claim 6, characterized in that: The displacement detection device (2) includes a fixing plate (24), which is fixedly connected to one end of the connector (311). A displacement sensor (22) and a dial indicator (23) are also connected to the fixing plate (24). The probes of the displacement sensor (22) and the dial indicator (23) both abut against the slide (7).

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