Water-soluble wax core removal device and method

Abstract

The invention provides a water-soluble wax core removing device and method. The water-soluble wax core removing device comprises a device body with a core removing groove. The device body is externally connected with a gas generating device, and a gas heating device is arranged between the device body and the gas generating device and used for heating conveyed gas. A monitoring device in communication connection with the gas heating device is arranged on the device body and is used for monitoring the temperature and the pH value of the depoling liquid in the depoling groove in real time and sending information to the gas heating device. According to the water-soluble wax core removing device, the gas heating device is arranged between the device body and the gas generating device, it is guaranteed that the temperature of gas input into the core removing groove is within the fluctuation range of the temperature of core removing liquid, and therefore the water-soluble wax core is rapidly removed without damage on the basis that the stability of the size of a wax mold finished product is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of investment casting, and in particular to a device and method for removing a water-soluble wax core. Background Art

[0002] Water-soluble wax cores are used in investment casting to assist in the preparation and molding of wax patterns with nearly closed cavity structures, solving problems such as complicated mold design, poor surface quality of wax patterns caused by wax pattern splitting and reassembly, and low preparation accuracy. Although the preparation process using water-soluble wax cores to assist in the overall molding of wax patterns has solved the above problems, it is necessary to add a water-soluble wax core removal process to the conventional wax pattern preparation process. The removal of water-soluble wax cores requires the consumption of hydrogen ions in the core removal liquid. Since the location of water-soluble wax core-assisted molding is usually a location where the cavity is highly closed after the wax pattern is molded and the mold is difficult to split and remove, when the hydrogen ions in the core removal liquid near and inside the core removal cavity are consumed, the core removal liquid has poor fluidity, which will cause the pH value of the core removal liquid in the cavity to rise rapidly, and the overall core removal rate will slow down or even stagnate, seriously affecting the production efficiency of the wax pattern.

[0003] The compressed gas bubbling technology is to introduce gas to the bottom of the core-removing liquid at a certain flow rate and pressure. The gas will expand in the liquid to form bubbles and gradually float up and grow, and finally burst and discharge at the liquid surface. In the process of the bubble rising and growing, it drives the surrounding liquid to form a liquid flow, which has a homogenizing effect on the hydrogen ions in the surrounding core-removing liquid, and accelerates the process of water-soluble wax core removal. However, the application of compressed gas bubbling technology will cause the gas temperature to change before and after compression. Directly passing compressed air into the core-removing liquid will inevitably affect the temperature of the core-removing liquid. At present, the size of the wax mold after pressing out of the mold is achieved by strictly controlling the temperature fluctuation range of the environment in which it is located to achieve the purpose of dimensional accuracy control. Therefore, the core-removing liquid temperature of the water-soluble wax core during the core-removing process also needs to meet the temperature requirements of the wax mold preparation environment, otherwise it will cause the size of the wax mold after core-removing to be out of tolerance, affecting the finished product qualification rate of the pressed wax mold.

[0004] Therefore, the existing water-soluble wax core removal equipment and process still need to be improved. Summary of the invention

[0005] The main purpose of the present invention is to propose a water-soluble wax core removal device and method. The water-soluble wax core removal device of the present invention heats the transported gas by arranging a gas heating device between the device body and the gas generating device to ensure that the temperature of the gas input into the core removal tank is within the fluctuation range of the core removal liquid temperature, thereby achieving damage-free and rapid removal of the water-soluble wax core while ensuring the stability of the size of the wax mold finished product.

[0006] In order to achieve the above objectives, the present invention provides the following technical solutions.

[0007] The first aspect of the present invention provides a water-soluble wax core removal device, which includes a device body having a core removal groove, wherein the core removal groove is used to hold a core removal liquid; the device body is connected to a gas generating device, and a gas heating device is provided between the device body and the gas generating device, the gas generating device is used to transport gas into the core removal groove, and the gas heating device is used to heat the transported gas to ensure that the temperature of the gas input into the core removal groove is within the fluctuation range of the core removal liquid temperature; a monitoring device is provided on the device body, and the monitoring device is communicatively connected to the gas heating device, the monitoring device is used to monitor the temperature and pH value of the core removal liquid in the core removal groove in real time, and send information to the gas heating device, and the gas heating device is used to adjust the heating temperature according to the information to ensure that the temperature of the gas input into the core removal groove is within the fluctuation range of the core removal liquid temperature.

[0008] In some embodiments of the present invention, a porous ventilation duct is provided in the core stripping groove, the ventilation duct is connected to the gas generating device and is detachably connected to the gas generating device, and the ventilation duct moves up and down in a vertical direction relative to the device body.

[0009] In some embodiments of the present invention, the ventilation duct includes a plurality of air tubes distributed in a radial shape, the plurality of air tubes are interconnected, and each of the air tubes is provided with a plurality of air holes.

[0010] In some embodiments of the present invention, one end of any one of the plurality of air pipes is detachably connected to the gas generating device.

[0011] In some embodiments of the present invention, the ventilation duct can be telescopically arranged to adapt to the core stripping grooves of various shapes and specifications.

[0012] In some embodiments of the present invention, each of the trachea is independently retractable.

[0013] In some embodiments of the present invention, a lifting frame is provided at the bottom of the core stripping groove, the ventilation duct is detachably connected to the lifting frame, and a controller connected to the lifting frame is provided on the device body, which is used to drive the lifting frame to move up and down in the vertical direction to synchronously drive the ventilation duct to move.

[0014] In some embodiments of the present invention, the gas heating device includes a gas heater and a regulator connected to the gas heater for control, wherein the regulator is connected to the monitoring device for communication and controls the heating temperature of the gas heater.

[0015] In some embodiments of the present invention, the monitoring device includes a temperature detector and a pH value meter, and the temperature detector is communicatively connected to the gas heating device.

[0016] In some embodiments of the present invention, the gas generating device comprises a gas compressor.

[0017] The second aspect of the present invention provides a water-soluble wax core removal method, which is based on the water-soluble wax core removal device described in the first aspect, and the removal method includes: placing the configured core removal liquid in the core removal tank, and turning on the gas generating device and the gas heating device; regulating the gas generating device according to the liquid level of the core removal liquid to control the gas flow rate within an appropriate range; and using a monitoring device to monitor the temperature of the core removal liquid in real time and send information to the gas heating device, and the gas heating device regulates the heating temperature according to the information so that the temperature of the gas input into the core removal liquid is within the temperature fluctuation range of the core removal liquid.

[0018] In some embodiments of the present invention, at 0.01 m 3 / s~0.1m 3 The gas flow rate can be adjusted within the flow rate range of / s.

[0019] In some embodiments of the present invention, the heating temperature of the gas is in the range of 20°C to 35°C.

[0020] Compared with the prior art, the present invention achieves the following technical effects:

[0021] The water-soluble wax core removal device in the present invention heats the transported gas by arranging a gas heating device between the device body and the gas generating device to ensure that the temperature of the gas input into the core removal tank is within the fluctuation range of the core removal liquid temperature, thereby achieving damage-free and rapid removal of the water-soluble wax core while ensuring the stability of the size of the finished wax mold.

[0022] The water-soluble wax core removal device of the present invention can achieve long-term stable tank liquid temperature without temperature deviation.

[0023] The water-soluble wax core removing device of the present invention can realize uniform stirring of the tank liquid without damaging the wax mold.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0026] Figure 1 is a schematic structural diagram of a water-soluble wax core removal device according to one or more embodiments;

[0027] Figure 2 for Figure 1 A top view of a water-soluble wax core removal device;

[0028] Figure 3 is a process flow chart of a water-soluble wax core removal method according to one or more embodiments;

[0029] Figure 4 is the temperature control curve of the core removal liquid in the core removal tank in Example 1;

[0030] Figure 5 This is the temperature control curve of the core removal liquid in the core removal tank in Example 2.

[0031] Reference numerals:

[0032] 100. Water-soluble wax core removal device;

[0033] 10. Device body; 11. Core stripping groove; 12. Ventilation duct;

[0034] 20. Gas generating device;

[0035] 30. Gas heating device;

[0036] 40. Monitoring device. DETAILED DESCRIPTION

[0037] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concept of the present invention.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present invention, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0044] In the process of using water-soluble wax core to assist wax mold forming, the wax mold after auxiliary molding needs to be de-cored. During the de-core process, the de-core liquid is stationary, and the reaction rate near the de-core cavity is reduced, resulting in a long de-core time for the wax mold and low production efficiency. In addition, since the shrinkage rate needs to be controlled and the size of the wax mold needs to be stabilized after the wax mold is demolded, the temperature of the de-core liquid needs to meet the temperature control requirements of the wax mold environment.

[0045] The compressed gas bubbling technology is to introduce gas into the bottom of the core-removing liquid at a certain flow rate and pressure. The gas will expand in the liquid to form bubbles and gradually float up and grow, and finally break and discharge at the liquid surface. In the process of the bubble rising and growing, it drives the surrounding liquid to form a liquid flow, which has a homogenizing effect on the hydrogen ions in the surrounding core-removing liquid, and accelerates the process of water-soluble wax core removal. However, the application of compressed gas bubbling technology will cause the gas temperature to change before and after compression. Directly passing compressed air (temperature range of 5℃~13℃) into the core-removing liquid will definitely affect the temperature of the core-removing liquid. At present, the size of the wax mold after pressing out of the mold is achieved by strictly controlling the temperature fluctuation range of the environment in which it is located to achieve the purpose of dimensional accuracy control. Therefore, the core-removing liquid temperature of the water-soluble wax core during the core-removing process also needs to meet the temperature requirements of the wax mold preparation environment, otherwise it will cause the size of the wax mold after core-removing to be out of tolerance, affecting the qualified rate of the finished product of the pressed wax mold.

[0046] The present invention provides a Figure 1 The water-soluble wax core removal device shown in FIG. Figure 2 Introduction: A water-soluble wax core removing device 100 includes a device body 10 having a core stripping groove 11, and the core stripping groove 11 is used to hold a core stripping liquid; the device body 10 is externally connected to a gas generating device 20, and a gas heating device 30 is provided between the device body 10 and the gas generating device 20, the gas generating device 30 is used to transport gas into the core stripping groove, and the gas heating device 30 is used to heat the transported gas to ensure that the temperature of the gas input into the core stripping groove 11 is within the fluctuation range of the temperature of the core stripping liquid; a monitoring device 40 is provided on the device body 10, and the monitoring device 40 is communicatively connected with the gas heating device 30, the monitoring device 40 is used to monitor the temperature and pH value of the core stripping liquid in the core stripping groove 11 in real time, and send information to the gas heating device 30, and the gas heating device 30 is used to adjust the heating temperature according to the information to ensure that the temperature of the gas input into the core stripping groove 11 is within the fluctuation range of the temperature of the core stripping liquid.

[0047] In an embodiment of the present invention, a gas heating device 30 is provided between the device body 10 and the gas generating device 20 to heat the transported gas so as to ensure that the temperature of the gas input into the core stripping tank 11 is within the fluctuation range of the temperature of the core stripping liquid; and a monitoring device 40 is further provided to communicate with the gas heating device 30 to monitor the temperature and pH value of the core stripping liquid in the core stripping tank 11 in real time, and send information to the gas heating device 30. The gas heating device 30 can adjust the gas heating temperature according to the information to ensure that the temperature of the gas input into the core stripping tank 11 is within the fluctuation range of the temperature of the core stripping liquid, and finally the temperature of the core stripping liquid in the core stripping tank 11 fluctuates less during use, and there will be no out-of-tolerance situation, so the size of the prepared wax mold is more stable and controllable.

[0048] In contrast, the existing technology uses a temperature control method for the core-removing liquid, which is to automatically stop ultrasonic emission when a temperature error is detected through a thermocouple, and then cool the core-removing liquid by a cooling water pipe outside the core-removing tank. This is a dynamic control method that can only ensure that the average liquid temperature during the core-removing period meets the wax mold storage temperature requirement. However, in actual applications, there is a situation where the core-removing wax mold is taken out when the core-removing liquid in the tank is over-temperature, and there is a risk of the wax mold size being out of tolerance.

[0049] Continue to see Figure 1 As shown, the gas heating device 30 includes a gas heater and a regulator connected to the gas heater for control. The regulator is connected to the monitoring device 40 for communication, and the regulator is used to control the heating temperature of the gas heater.

[0050] In some embodiments of the present invention, the device body 10 is connected to the gas generating device 20 through a pipeline, the gas generating device 20 outputs gas and is transported to the core stripping groove 11 of the device body 10 through a pipeline, and the gas heating device 30 can be arranged around the pipeline, such as the heater can be a heating coil or a heating belt arranged around the outside of the pipeline, and the heating temperature of the heating coil or the heating belt is controlled by a regulator. Of course, the gas heating device 30 in the embodiment of the present invention can also be other heating devices to achieve heating of the gas in the pipeline.

[0051] Continue to see Figure 1 As shown, the monitoring device 40 includes a temperature detector and a pH value meter, wherein the temperature detector is used to detect the temperature of the core removal liquid, and the pH value meter is used to detect the pH value of the core removal liquid. The temperature detector is connected to the gas heating device 30 for communicating and transmitting temperature data to the gas heating device 30 in real time.

[0052] In some embodiments of the present invention, the temperature detector is communicatively connected to the controller of the gas heating device 30 to transmit temperature data to the controller in real time, and the heating temperature of the gas heater is regulated by the controller.

[0053] In an embodiment of the present invention, a temperature control device is provided on the device body 10 along the circumference of the core stripping groove 11, and the temperature control device is communicated with the monitoring device 40 for controlling the temperature of the core stripping liquid in the core stripping groove 11 to ensure that the temperature of the core stripping liquid is maintained within the required temperature range.

[0054] In some embodiments of the present invention, the temperature control device may be a heating belt or a heating strip disposed around the core stripping groove 11 .

[0055] Continue to see Figure 1 As shown, the gas generating device 20 may be, but is not limited to, a gas compressor, such as an air compressor, to generate gas and deliver the gas to the core stripping tank 11 .

[0056] In an embodiment of the present invention, a valve is provided on the gas generating device 20. The valve is opened to deliver gas and adjust the gas flow rate, and the valve is closed to stop delivering gas.

[0057] Continue to see Figure 2 As shown, a ventilation pipe 12 with multiple holes is arranged in the core stripping groove 11. The ventilation pipe 12 is connected to the gas generating device 20 and is detachably connected to the gas generating device 20. The ventilation pipe 12 moves up and down in the vertical direction relative to the device body 10.

[0058] In the embodiment of the present invention, a ventilation pipe 12 is provided in the core stripping tank 11, and the ventilation pipe 12 is connected to the gas generating device 20, and the gas is injected into the core stripping liquid in the core stripping tank 11 to form a uniform stirring effect of tank liquid bubbling, thereby improving the core stripping reaction rate and uniformizing the pH value of the core stripping liquid. Moreover, compared with the existing stirring paddle or stirring rod, the present invention does not introduce a movable hard object into the core stripping tank 11, which can effectively prevent the damage and deformation caused by the collision of the wax mold.

[0059] In an embodiment of the present invention, under the premise of configuring the same concentration of core-removing liquid, the core-removing speed of the same water-soluble wax core process wax mold under the process of the present invention is twice the core-removing speed of ordinary core-removing liquid, which greatly improves the efficiency of wax mold preparation.

[0060] Since the temperature of the gas discharged by the gas generating device 20 is in the range of 5°C to 13°C (lower than the temperature requirement of the wax model environment control), the temperature of the core removal liquid may be lower than the temperature requirement of the wax model preparation environment control during the start-up of the bubble stirring, thereby causing the overall size of the cored wax model to be out of tolerance. In an embodiment of the present invention, a temperature-adjustable gas heating device 30 is provided between the ventilation duct inlet of the core removal groove 11 and the gas outlet of the gas generating device 20. Under a fixed input gas flow rate, the temperature of the core removal liquid can be stably kept within the environmental temperature control requirement by adjusting the heating temperature of the gas heating device 30, thereby achieving the purpose of stabilizing the size of the wax model.

[0061] Continue to see Figure 2 As shown, the ventilation duct 12 includes a plurality of air pipes distributed in a radial shape, the plurality of air pipes are interconnected, and each air pipe is provided with a plurality of air holes.

[0062] In an embodiment of the present invention, multiple air pipes arranged radially are connected in series after being evenly perforated, and are integrally connected to a gas generating device 20, such as an air compressor, so that compressed air can be more evenly introduced into the core removal liquid through the multiple air pipes.

[0063] In some embodiments of the present invention, one end of any one of the plurality of air pipes can be detachably connected to the gas generating device 20, so that the ventilation pipe 12 is connected as a whole to the gas generating device 20. Moreover, the detachable connection makes the operation more convenient, and can be disassembled and replaced according to actual needs.

[0064] In the embodiment of the present invention, the ventilation duct 12 can be telescopically arranged to adapt to core stripping grooves 11 of various shapes and specifications. Therefore, the shape and size of the core stripping groove 11 can be set according to actual needs and is not limited to cylindrical or square.

[0065] In some embodiments of the present invention, each air tube is independently retractable, for example, a telescopic rod may be used and holes may be punched in the rod wall to serve as the air tube.

[0066] In an embodiment of the present invention, a lifting frame is provided at the bottom of the core stripping groove 11, and the ventilation duct 12 is detachably connected to the lifting frame. A controller connected to the lifting frame control is provided on the device body 10, which is used to drive the lifting frame to move up and down in the vertical direction to synchronously drive the ventilation duct 12 to move, thereby realizing flexible regulation of the rise or fall of the ventilation duct 12 to meet more needs.

[0067] In an embodiment of the present invention, a lifting type, retractable ventilation duct 12 is used, so that the purpose of freely selecting the size of the core stripping tank 11 according to the size and quantity of the core stripping wax pattern can be realized in a limited production operation area. When the wax pattern size is small and the number is small, the configuration of the core stripping liquid is replaced with a small tank body, and the time required for the tank liquid to heat up will be greatly shortened. For example, it takes about 90 minutes to heat and control the temperature of 400L liquid from 13°C to 18°C, while it only takes about 30 minutes to heat and control the temperature of 100L liquid. Due to the reduction in the size of the tank body, it is also possible to save the amount of acid agent input and water resources, and further reduce the subsequent treatment cost of spent acid. In addition, since the tank body is movable and replaceable, the cleaning operation of the tank body becomes more convenient.

[0068] In an embodiment of the present invention, a filter is also provided in the core stripping groove 11. The filter is detachably arranged above the ventilation pipe 12. The filter is connected to the ventilation pipe 12 to facilitate the gas introduced through the ventilation pipe 12 to pass through the filter without affecting the smooth introduction of the gas.

[0069] In some embodiments of the present invention, the filter includes a filter plate having a plurality of filter holes, and the air holes on the ventilation pipe 12 are connected to the filter holes on the filter. The filter plate is adapted to the core removal tank 11, which can be understood as the edge of the filter plate abutting against the tank wall of the core removal tank 11 for efficient filtration of the core removal waste liquid without affecting the lifting and lowering movement of the filter plate.

[0070] In an embodiment of the present invention, the filter is mainly used in the process of treating the waste liquid after the removal of the water-soluble wax core. The filter moves up and down in the vertical direction relative to the core removal tank 11, so as to separate the insoluble matter. For example, a guide rail is formed on the tank wall of the core removal tank 11, and a slider that fits tightly and is slidably connected to the guide rail is provided at the edge of the filter, such as the edge of the filter plate, and a control button for controlling the slider to move up and down along the guide rail is provided on the device body 10, so as to realize the lifting and lowering movement of the filter.

[0071] It is worth mentioning that the water-soluble wax core removal device in the embodiment of the present invention is an integrated device for wax core removal and core removal waste liquid treatment. During the wax core removal process, the core removal tank 11 is used to hold the core removal liquid, the device body 10 is externally connected to the gas generating device 20, and a gas heating device 30 is arranged between the device body 10 and the gas generating device 20, the gas generating device 30 is used to transport gas into the core removal tank, and the gas heating device 30 is used to heat the transported gas to ensure that the temperature of the gas input into the core removal tank 11 is within the fluctuation range of the core removal liquid temperature; a monitoring device 40 is arranged on the device body 10, and the monitoring device 40 is communicatively connected with the gas heating device 30, the monitoring device 40 is used to monitor the temperature and pH value of the core removal liquid in the core removal tank 11 in real time, and send information to the gas heating device 30, the gas heating device 30 is used to adjust the heating temperature according to the information to ensure that the temperature of the gas input into the core removal tank 11 is within the fluctuation range of the core removal liquid temperature.

[0072] In an embodiment of the present invention, after the wax core is removed, the core removal liquid in the core removal tank 11 becomes a core removal waste liquid. At this time, the water-soluble wax core removal device is used as a core removal waste liquid treatment device to treat the core removal waste liquid without changing the equipment. Specifically, the core removal waste liquid can be temperature-controlled by a monitoring device and a temperature control device to ensure that the temperature of the core removal waste liquid is maintained within the required temperature range, and then an appropriate amount of pH regulator is added to the core removal waste liquid to adjust the pH value of the core removal waste liquid to neutral. At this time, the gas heating device 30 can also be used to pre-heat the gas to be transported to the core removal waste liquid to ensure that the temperature of the gas input into the core removal waste liquid is maintained within the reaction temperature range of the core removal waste liquid. A waste liquid treatment agent is added to the core removal waste liquid, and gas is introduced through a ventilation pipe to fully contact the core removal waste liquid with the waste liquid treatment agent, and the insoluble matter in the core removal waste liquid is quickly condensed and precipitated. After the insoluble gel precipitation is completed, the filter is started, and the filter will rise in the vertical direction (the height direction of the core removal tank) to separate and carry out the precipitate to achieve solid-liquid separation. Afterwards, the precipitate and solution after solid-liquid separation are treated by environmentally friendly processes respectively.

[0073] The present invention also provides a water-soluble wax core removal method. The key lies in that based on the above-mentioned water-soluble wax core removal device, a monitoring device is used to monitor the temperature of the core removal liquid in real time and send information to a gas heating device. The gas heating device adjusts the heating temperature according to the information so that the temperature of the gas input into the core removal liquid is within the temperature fluctuation range of the core removal liquid.

[0074] See also Figure 3 As shown, the water-soluble wax core removal method of the present invention is carried out according to the following steps.

[0075] First, prepare the core-removing liquid, and place the prepared core-removing liquid in the core-removing tank.

[0076] Secondly, the gas generating device and the gas heating device are turned on, wherein the gas generating device can be regulated according to the liquid level of the core-removing liquid to control the gas flow rate within an appropriate range, and the heated gas is introduced into the core-removing liquid in the core-removing tank at a fixed flow rate to form a bubble stirring effect; and the temperature of the core-removing liquid is monitored in real time by a monitoring device and the information is sent to the gas heating device, and the gas heating device regulates the heating temperature according to the information so that the temperature of the gas input into the core-removing liquid is within the temperature fluctuation range of the core-removing liquid, thereby realizing steady-state control of the temperature of the core-removing liquid.

[0077] Then, real-time monitoring is performed for a period of time. If the liquid temperature meets the requirements, the gas flow control valve position is maintained to carry out the wax mold pressing and water-soluble wax core removal process. If the liquid temperature is lower than the ambient temperature control requirements, the gas heating device is regulated and the gas heating target temperature is set to heat the gas entering the core removal tank. The core removal process preparation work is completed until the tank liquid temperature meets the ambient temperature control requirements.

[0078] Finally, the wax pattern is pressed and de-cored.

[0079] It is worth mentioning that during the core stripping process, a monitoring device will be used to monitor the temperature of the core stripping liquid in real time, and a gas heating device will be used to control the temperature of the input gas to ensure that the core stripping liquid temperature meets the requirements.

[0080] In the embodiment of the present invention, at 0.01 m 3 / s~0.1m 3 The gas flow rate can be adjusted within the flow rate range of 0.01 m / s. 3 / s, 0.02m 3 / s, 0.03m 3 / s, 0.04m 3 / s, 0.05m 3 / s, 0.06m 3 / s, 0.07m 3 / s, 0.08m 3 / s, 0.09m 3 / s、0.1m3 / s or any value that satisfies the above range.

[0081] In an embodiment of the present invention, the heating temperature of the gas is in the range of 20° C. to 35° C. For example, the heating temperature of the gas may be one of 20° C., 25° C., 30° C., 35° C. or any value satisfying the above range.

[0082] Unless otherwise defined, the technical terms used in the following examples have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The experimental reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the raw materials, instruments and equipment used in the following examples, etc., can all be purchased on the market or can be obtained by existing methods; the amounts of the experimental reagents, unless otherwise specified, are the amounts of reagents used in conventional experimental operations; the experimental methods, unless otherwise specified, are all conventional methods.

[0083] Example 1

[0084] A method for removing water-soluble wax core, based on Figure 1-2 The water-soluble wax core removal device shown in the figure, the core removal process flow is shown in Figure 3 shown.

[0085] (1) Before preparing to press the core-removing wax mold, prepare the core-removing liquid and place the prepared core-removing liquid in the core-removing tank.

[0086] (2) Turn on the air compressor and adjust the core removal liquid level to 0.05m 3 / s flow rate to adjust the gas flow rate to make the bubbling effect of the core removal liquid moderate. At the same time, the temperature of the core removal liquid is monitored in real time using a temperature detector. When the air compressor runs stably for about 30 minutes, the temperature detector shows that the tank liquid temperature is 12.6℃, which does not meet the wax mold environment temperature requirements.

[0087] (3) Start the air heating program and set the maximum air heating temperature to 25°C. Set the air heating program to start air heating when the bath liquid temperature is lower than 19°C and stop air heating when the bath liquid temperature reaches 20°C.

[0088] Figure 4 The bath liquid temperature rise and liquid temperature control curves under the above program process are shown. The bath liquid temperature reaches 20°C about 2 hours after the air heater is started. About 6 minutes after the heating program stops heating, the program enters the insulation mode and the liquid temperature is stably controlled in the range of (19±0.1)°C.

[0089] (4) performing a wax mold pressing and water-soluble wax core removal process, specifically, using a mold and a water-soluble wax core to press the wax mold, and placing the wax mold in a core removal tank for core removal.

[0090] (5) After core removal is completed, remove and clean the wax mold.

[0091] Example 2

[0092] A method for removing water-soluble wax core, based on Figure 1-2 The water-soluble wax core removal device shown in the figure, the core removal process flow is shown in Figure 3 shown.

[0093] (1) Before preparing to press the core-removing wax mold, prepare the core-removing liquid and place the prepared core-removing liquid in the core-removing tank.

[0094] (2) Use a temperature detector to monitor the temperature of the core-removing liquid in real time. When the ambient temperature is high, a temperature control device can be used to adjust the temperature of the core-removing liquid to the required temperature when the ambient temperature of the wax mold is met, such as adjusting the temperature of the core-removing liquid to 19°C.

[0095] (3) Start the air compressor and air heating program, according to the core removal liquid level at 0.05m 3 / s flow rate to adjust the gas flow rate to make the bubbling effect of the core removal liquid moderate, and set the maximum air heating temperature to 25℃. Set the air heating program to start air heating when the tank liquid temperature is lower than 19℃, and stop air heating when the tank liquid temperature reaches 20℃. At the same time, use the temperature detector to monitor the temperature of the core removal liquid in real time. When the air compressor runs stably for about 10 minutes, the temperature detector shows that the tank liquid temperature rises from 18.4℃ to 19℃, meeting the wax mold environment temperature requirements.

[0096] Figure 5 The bath temperature rise and liquid temperature control curves under the above program process are shown. The bath temperature reaches the target temperature of 19°C 10 minutes after the air heater is started. During the subsequent 9-hour operation of the temperature control program, the bath temperature is stably controlled in the range of (19±0.1)°C.

[0097] (4) performing a wax mold pressing and water-soluble wax core removal process, specifically, using a mold and a water-soluble wax core to press the wax mold, and placing the wax mold in a core removal tank for core removal.

[0098] (5) After core removal is completed, remove and clean the wax mold.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A water-soluble wax core removal device, characterized in that: The device comprises a core stripping groove, wherein the core stripping groove is used to contain the core stripping liquid; The device body is connected to a gas generating device, and a gas heating device is provided between the device body and the gas generating device. The gas generating device is used to deliver gas into the core stripping tank, and the gas heating device is used to heat the delivered gas to ensure that the temperature of the gas input into the core stripping tank is within the fluctuation range of the core stripping liquid temperature. A monitoring device is provided on the device body, and the monitoring device is communicatively connected with the gas heating device. The monitoring device is used to monitor the temperature and pH value of the core stripping liquid in the core stripping tank in real time, and send information to the gas heating device. The gas heating device is used to adjust the heating temperature according to the information to ensure that the temperature of the gas input into the core stripping tank is within the fluctuation range of the core stripping liquid temperature.

2. The water-soluble wax core removal device according to claim 1, characterized in that: A ventilation pipe with multiple holes is arranged in the core stripping groove. The ventilation pipe is connected to the gas generating device and is detachably connected to the gas generating device. The ventilation pipe moves up and down in a vertical direction relative to the device body.

3. The water-soluble wax core removal device as claimed in claim 2, characterized in that: The ventilation duct includes a plurality of air pipes distributed in a radial shape, the plurality of air pipes are interconnected, and each of the air pipes is provided with a plurality of air holes; Preferably, one end of any one of the plurality of air pipes is detachably connected to the gas generating device.

4. The water-soluble wax core removal device as claimed in claim 2, characterized in that: The ventilation duct can be telescopically arranged to adapt to the core stripping grooves of various shapes and specifications; Preferably, each of the air tubes is independently retractable.

5. The water-soluble wax core removal device as claimed in claim 2, characterized in that: A lifting frame is arranged at the bottom of the core stripping groove, and the ventilation pipe is detachably connected to the lifting frame. A controller connected to the lifting frame is arranged on the device body for driving the lifting frame to move vertically to synchronously drive the ventilation pipe to move.

6. The water-soluble wax core removal device according to claim 1, characterized in that: The gas heating device comprises a gas heater and a regulator connected to the gas heater for control. The regulator is connected to the monitoring device for communication and controls the heating temperature of the gas heater.

7. The water-soluble wax core removal device according to claim 1, characterized in that: The monitoring device comprises a temperature detector and a pH value measuring instrument, and the temperature detector is communicatively connected with the gas heating device.

8. The water-soluble wax core removal device according to claim 1, characterized in that: The gas generating device comprises a gas compressor.

9. A method for removing a water-soluble wax core, characterized in that: The removal method is based on the water-soluble wax core removal device according to any one of claims 1 to 8, and the removal method comprises: Place the prepared core stripping liquid in the core stripping tank, and turn on the gas generating device and the gas heating device; According to the level of the core removal liquid, the gas generating device is regulated to control the gas flow rate within a suitable range; and The monitoring device is used to monitor the temperature of the core removal liquid in real time and send information to the gas heating device. The gas heating device adjusts the heating temperature according to the information so that the temperature of the gas input into the core removal liquid is within the temperature fluctuation range of the core removal liquid.

10. The removal method according to claim 9, characterized in that: At 0.01m 3 / s~0.1m 3 Adjust the gas flow rate within the flow rate range of / s; Preferably, the heating temperature of the gas is in the range of 20°C to 35°C.

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