A heat treatment apparatus for stainless steel investment casting

Abstract

The present application relates to the technical field of stainless steel investment casting, and discloses a heat treatment equipment for stainless steel investment casting, which comprises a placing table arranged on the ground. The present application can realize immediate heat preservation of the mold just out of the furnace, so that the temperature of the mold does not drop suddenly, and the mold does not appear cracks due to excessive temperature reduction and reheating. The present application can ensure that the mold coming out of the heating area can be immediately poured when pouring the mold, and the temperature of the remaining mold does not drop suddenly, so that the mold does not stay outside for a long time and the temperature drops a lot when pouring, which causes a large temperature difference between the mold and the metal melt when pouring, resulting in poor product quality. The present application can ensure the quality of pouring, and can open the heating pipes of corresponding height and below according to the actual height of the mold, so as to avoid the situation that the heating pipes exceeding the height of the mold cannot be fully utilized, causing waste of energy.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stainless steel investment casting, and particularly relates to a heat treatment equipment for stainless steel investment casting. BACKGROUND

[0002] Investment casting, also known as "lost wax method", is a process for manufacturing precision castings through a wax mold. For stainless steel materials, this process utilizes the corrosion resistance, high strength and other characteristics of the material, and combines the high precision advantage of investment casting to produce stainless steel parts with complex structures.

[0003] Patent document with application number 202410436160.4 discloses a heat treatment equipment for stainless steel investment casting. The equipment cooperates with a casting mechanism and a clamping mechanism to perform stainless steel part casting work, and can preheat and keep warm to make the casting effect better. Through cooperation of a moving mechanism and an adjusting mechanism, the casting mechanism can smoothly move on the placement table and facilitate subsequent layer placement. Through cooperation of a blanking mechanism and a protection mechanism, the blanking mechanism can stably blank and place the cast layer after casting. However, the equipment has the following problems when in use:

[0004] 1. When the shell mold is taken out and placed on the clamping mechanism, even if the shell mold is placed in the placement box close to the heat preservation plate first, when the shell mold close to the heat preservation plate is placed, the placement box is then sent into the heating pipe, so that the placed shell mold can be immediately kept warm. However, in actual operation, the shell mold is placed one by one. When the shell mold in the same row is placed, the first placed shell mold is exposed to the air for a period of time. In the case that the surrounding environment temperature is low, for example, in cold winter, cold air flows through the factory, so that the temperature of the first placed shell mold decreases a lot. If the temperature of the shell mold decreases too much, the heating pipe will restore the temperature of the shell mold to the temperature near the furnace discharge temperature when the shell mold is pushed into the heating pipe for heating and keeping warm. In the process of stainless steel investment casting, the shell mold is made of ceramic. Since the thermal expansion coefficient and thermal conductivity of the ceramic shell mold are low, when the temperature drops too much, a significant temperature difference will be formed between the surface and the inside of the shell mold (especially for shell molds with large wall thickness or complex structure), which will cause internal tensile stress. When reheated, the surface expands first, and the inside lags behind, which will form compressive stress again. The repeated thermal stress cycle will easily cause microcracks or even through cracks in the weak parts (such as corners and hole edges) of the shell mold.

[0005] 2. When pouring molten metal, the placement box is pulled out of the heating area of ​​the heating tube for pouring. In order to keep warm, even if the row to be poured is pulled out of the heating area first, the rest of the shell molds continue to remain in the heating area. However, in actual operation, workers also need to pour the molten metal into the shell molds one by one. The last shell mold to be poured is exposed to the outside world, and its temperature will drop sharply. As a result, there is a large temperature difference between it and the molten metal during pouring, resulting in poor product quality.

[0006] Therefore, it is necessary to invent a heat treatment equipment for stainless steel investment casting to solve the above problems.

[0007] The prior art cited is:

[0008] The clamping mechanism refers to the clamping mechanism in the patent document with application number: 202410436160.4, including components such as an insulation plate, a placement box, a shell mold and a heating tube. Summary of the Invention

[0009] In view of the above problems, the present invention provides a heat treatment device for stainless steel investment casting to solve the problems raised in the above background technology.

[0010] To achieve the above object, the present invention provides the following technical solution: a heat treatment device for stainless steel investment casting, comprising:

[0011] A placement table is set on the ground;

[0012] The box body is provided in a plurality and is slidably mounted on the placement table;

[0013] A slide rail is provided on the placement table for the box body to slide stably;

[0014] A carrier plate is disposed in the box body, and a plurality of circular grooves are formed on the carrier plate, wherein the plurality of circular grooves on the same carrier plate are linearly and equidistantly distributed along the direction of the slide rail;

[0015] A clamping mechanism is arranged in the circular groove;

[0016] a mold, mounted in the circular groove via the clamping mechanism;

[0017] A heating component is arranged on the placement table and is used for heat treatment and heat preservation of the mold.

[0018] Furthermore, the heating component includes:

[0019] Brackets are equidistantly arranged on the placement table, and the mold is located between two adjacent brackets;

[0020] A heat increasing pipe is arranged on a side of the bracket close to the mold;

[0021] The fixing assembly can connect the bracket and the placement table.

[0022] Furthermore, a mounting plate is fixedly installed at one end of the bracket, a rotating shaft is rotatably installed on the mounting plate, a baffle is provided on the external fixed sleeve of the rotating shaft, a torsion spring is provided on the outer sleeve of the rotating shaft, both ends of the torsion spring are fixedly connected to the rotating shaft and the mounting plate respectively, and the opposite ends of the two adjacent baffles are provided with an arc surface.

[0023] Furthermore, the distance between adjacent circular grooves on the same carrier plate is sufficient for the baffle to rotate and reset.

[0024] Furthermore, the heat increasing tubes are arranged in plurality and fixedly installed in the bracket at equal distances from top to bottom. The bracket is symmetrically provided with vertical grooves at one end away from the baffle. Press switches corresponding to the heat increasing tubes are fixedly installed on the inner walls of the vertical grooves at equal distances from top to bottom. The bracket is provided with a pressing assembly for pressing the press switches of corresponding height according to the height of the mold.

[0025] Furthermore, the pressing component includes:

[0026] A push plate, arranged between two adjacent brackets;

[0027] A pressing plate is slidably disposed in the vertical slot, and the pressing plate is connected to the adjacent push plate;

[0028] a first inclined surface, arranged on a side of the push plate away from the bracket;

[0029] A first plane is provided at the bottom of the push plate;

[0030] The first plane is flush with the bottom of the pressing plate;

[0031] One end of the push switch close to the push plate is configured as a round end, and the round end can contact the push plate.

[0032] Furthermore, the spacing between adjacent circular grooves on the same carrier plate is sufficient to accommodate the push plate.

[0033] Further, one side of the box body is symmetrically provided with a clamping groove, the other side of the box body is provided with a moving groove, a sliding plate is slidably installed in the moving groove, the side of the sliding plate close to the clamping groove is provided with a clamping plate corresponding to the clamping groove, a pressing block is fixedly installed on the side of the sliding plate away from the clamping plate, the side of the pressing block is provided with a second inclined surface, the side of the pressing block away from the sliding plate is provided with a second plane connected with the second inclined surface, a pushing block in contact with the second plane is slidably installed in the moving groove, the side of the pushing block is connected with a pull rod, one end of the pull rod extends out of the moving groove, and the sliding plate is fixedly connected with the inner wall of the moving groove through a spring.

[0034] Technical effects and advantages of the present application:

[0035] 1、The present application can realize immediate heat preservation of the mold just out of the furnace, so that the temperature does not drop suddenly, and the mold does not appear cracks due to temperature reduction and re-heating, and can ensure that the mold can be immediately poured out of the heating area when pouring the mold, and the temperature of the remaining mold will not drop suddenly, so that when pouring, the mold will not be outside for a long time, the temperature will drop a lot, resulting in a large temperature difference between the mold and the metal melt during pouring, causing poor product quality, and ensuring the quality of pouring;

[0036] 2、The present application can open the heating pipe of corresponding height and below according to the actual height of the mold, so as to avoid the situation that the heating pipe is opened and the heating pipe exceeding the height of the mold cannot be fully utilized, causing waste of energy. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 The structure of the heat treatment equipment for stainless steel investment casting is shown Figure 1 ;

[0038] Figure 2 The structure of the heat treatment equipment for stainless steel investment casting is shown Figure 2 ;

[0039] Figure 3 The structure of the heat treatment equipment for stainless steel investment casting is shown Figure 2 The enlarged structure of position A in the embodiment of the present application is shown

[0040] Figure 4 The cross-sectional structure of the heat treatment equipment for stainless steel investment casting is shown

[0041] Figure 5 The enlarged structure of position B in the embodiment of the present application is shown Figure 4 The enlarged structure of position B in the embodiment of the present application is shown

[0042] Figure 6 The cross-sectional structure of the box body combination is shown

[0043] Figure 7 A schematic structural diagram of a box assembly according to an embodiment of the present invention is shown;

[0044] In the figure: 1. Placement table; 2. Box body; 3. Slide rail; 4. Carrier plate; 5. Mold; 6. Bracket; 7. Heat increasing tube; 8. Fixing plate; 9. Latch; 10. Mounting plate; 11. Rotating shaft; 12. Baffle; 13. Press switch; 14. Push plate; 15. Press plate; 16. First inclined surface; 17. First plane; 18. Slide plate; 19. Card plate; 20. Spring; 21. Extrusion block; 22. Push block; 23. Second inclined surface; 24. Pull rod. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0046] The present invention provides a heat treatment device for stainless steel investment casting, such as Figures 1 to 7 As shown, it includes: a placement table 1, a box body 2, a slide rail 3, a carrier plate 4, a clamping mechanism, a mold 5, and a heating component;

[0047] The placement table 1 is set on the ground, the box body 2 is set in multiple pieces and is slidably installed on the placement table 1, the slide rail 3 is set on the placement table 1, for the box body 2 to slide stably, the carrier plate 4 is fixedly installed in the box body 2, and a plurality of circular grooves are opened on the carrier plate 4. The multiple circular grooves on the same carrier plate 4 are distributed in a straight line and equidistantly along the direction of the slide rail 3. The clamping mechanism is set in the circular groove, and the mold 5 is installed in the circular groove through the clamping mechanism. The heating component is set on the placement table 1 for heat treatment and insulation of the mold 5.

[0048] When in use, the mold 5 taken out of the heating furnace is placed in the circular groove near the heating component, and the mold 5 is clamped by the clamping mechanism. After placement is completed, the box body 2 is pushed to move the carrier plate 4 and the mold 5 into the heating component, and the heating component cooperates with the heating component to heat-treat and keep the mold 5 just out of the oven so that its temperature will not drop significantly. Then the next mold 5 is placed in the circular groove adjacent to the previous mold 5 on the same box body 2. After placement is completed, the box body 2 is continued to be pushed so that the mold 5 just placed enters the heating component and continues to heat-treat and keep its temperature will not drop significantly. The subsequent operation is the same as above. When a mold 5 is placed, it is moved into the heating component. After all the circular grooves on one box body 2 are used, the circular grooves on the next box body 2 are started to be used. The above operation is repeated so that the mold 5 just out of the oven can be immediately kept warm so that its temperature will not drop sharply.

[0049] When the shell mold is taken out and placed on the clamping mechanism, even if the shell mold is placed in the row close to the heat preservation plate first, when the shell mold in the row close to the heat preservation plate is placed, the placing box is then sent into the heating pipe, so that the placed shell mold can be immediately heat preserved, but in actual operation, the shell mold is placed in sequence, and when the shell mold in the same row is placed, the first placed shell mold is exposed to the air for a period of time, and in the case that the ambient temperature is low, for example, in the cold winter, cold air flows through the factory, so that the temperature of the first placed shell mold decreases more, and if the temperature of the shell mold decreases too much, when the shell mold is pushed into the heating pipe for heating and heat preservation, the heating pipe restores the temperature of the shell mold to the temperature near the furnace temperature, and in the stainless steel investment casting, the material of the shell mold is ceramic, and when the temperature decreases too much, a significant temperature difference is formed between the surface and the inside of the ceramic shell mold (especially for the shell mold with large wall thickness or complex structure), which causes tensile stress in the inside; when reheated, the surface expands first, and the inside lags behind, which forms compressive stress again, and repeated thermal stress cycle easily causes microcracks or even through cracks in the weak parts (such as corners and hole edges) of the shell mold.

[0050] In the present application, the mold 5 just out of the furnace can be immediately heat preserved, so that the temperature does not decrease sharply, and the mold 5 will not crack due to the temperature decreasing too much and then being restored.

[0051] When the metal melt needs to be poured into the mold, the placing box is pulled out of the heating area of the heating pipe for pouring, in order to heat preserve, even if the row that needs to be poured is pulled out of the heating area first, the remaining shell molds continue to be in the heating area, but in actual operation, the worker also needs to pour the metal melt into the shell mold in sequence, and the last poured shell mold is exposed to the outside, and its temperature decreases a lot, which causes a large temperature difference between the poured shell mold and the metal melt during pouring, and causes poor product quality.

[0052] In the present application, when pouring, the box body 2 is pulled to move the mold 5 that needs to be poured to leave the heating area of the heating assembly, and the remaining molds 5 on the same box body 2 are still in the heating area, after pouring one mold 5, the same box body 2 is continuously pulled out, so that the mold 5 adjacent to the poured mold 5 can be moved to leave the heating area for pouring, and the subsequent operation is the same as above, when all the molds 5 on one box body 2 are poured, another box body 2 is pulled out, and the above operation is repeated, and the molds 5 are sequentially pulled out of the heating area for pouring, by the above method, the poured mold 5 can be immediately poured out of the heating area, and the temperature of the remaining mold 5 will not decrease sharply, so that during pouring, the poured mold 5 will not be exposed to the outside, its temperature will not decrease a lot, a large temperature difference between the poured mold 5 and the metal melt during pouring will not occur, and poor product quality will not occur, and the quality of pouring is ensured.

[0053] As shown in Figure 1 and Figure 2 , the heating assembly comprises: a support 6, a heating pipe 7, a fixing assembly;

[0054] The support 6 is equidistantly arranged on the placing table 1, the mold 5 is located between two adjacent supports 6, specifically, the mold 5 is centrally arranged between the two supports 6, the heating pipe 7 is arranged on the side of the support 6 close to the mold 5, and the fixing assembly can connect the support 6 and the placing table 1;

[0055] Specifically, the fixing assembly comprises: a fixed plate 8 and a bolt 9.

[0056] The fixed plate 8 is correspondingly and fixedly connected with the support 6, the placing table 1 is provided with a mounting hole corresponding to the fixed plate 8, the fixed plate 8 is located in the mounting hole, the fixed plate 8 and the placing table 1 are provided with a plurality of insertion holes in communication with the mounting hole, and the bolt 9 is inserted into the insertion holes to fix the fixed plate 8.

[0057] By starting the heating pipe 7 to heat, the mold 5 can be heat treated and kept warm, so that the temperature approaches the furnace temperature. By arranging the heating pipe 7 on both sides of the mold 5, uniform heating of each mold 5 on each box body 2 can be ensured, and the situation that the molds 5 block each other and affect the heating effect does not occur.

[0058] As shown in Figure 2 and Figure 3 , one end of the support 6 is fixedly provided with a mounting plate 10, the mounting plate 10 is rotatably provided with a rotating shaft 11, the outer portion of the rotating shaft 11 is fixedly provided with a baffle 12, the rotating shaft 11 is provided with a torsional spring, the two ends of the torsional spring are fixedly connected with the rotating shaft 11 and the mounting plate 10 respectively, and the opposite ends of the adjacent two baffles 12 are provided with arc surfaces. The distance between the adjacent circular grooves on the same carrier plate 4 is sufficient for the baffles 12 to rotate and reset.

[0059] When the mold 5 leaves the heating area, the mold 5 abuts against the baffle 12 to push the two baffles 12 to rotate and separate. When the baffle 12 rotates, the rotating shaft 11 rotates, so that the torsional spring is twisted and deformed. When the mold 5 leaves the baffle 12, the torsional spring resets the rotating shaft 11 and the baffle 12. The baffle 12 can protect the heating pipe 7 from being splashed by the molten metal.

[0060] As shown in Figures 1 to 5 , the heating pipe 7 is arranged in multiple and equidistantly fixedly arranged in the support 6 from top to bottom, the end of the support 6 away from the baffle 12 is symmetrically provided with a vertical groove, the inner wall of the vertical groove is equidistantly fixedly provided with a corresponding pressing switch 13 from top to bottom, and the support 6 is provided with a pressing assembly for pressing the corresponding height pressing switch 13 according to the height of the mold 5.

[0061] Because the height of the mold 5 is different due to different models, if the height of the mold 5 is low, when the mold 5 enters the heating range of the heat pipe 7, the heat pipe 7 is turned on, and the heat pipe 7 exceeding the height of the mold 5 cannot be fully utilized, resulting in waste of energy;

[0062] Therefore, before the mold 5 enters the heating area of the heat pipe 7, the pressing assembly will press the pressing switch 13 corresponding to the height of the mold 5 according to the height of the mold 5, so that the heat pipe 7 corresponding to the height and below the mold 5 is turned on, so that the heat pipe 7 corresponding to the height of the mold 5 can be turned on according to the height of the mold 5, so that the above energy waste situation will not occur.

[0063] As shown in Figure 5 The pressing assembly comprises a push plate 14, a pressing plate 15, a first inclined surface 16, and a first flat surface 17.

[0064] The push plate 14 is arranged between two adjacent supports 6, the pressing plate 15 is slidingly arranged in the vertical groove, the pressing plate 15 is fixedly connected with the adjacent push plate 14, the first inclined surface 16 is arranged on the side of the push plate 14 away from the support 6, the first flat surface 17 is arranged at the bottom of the push plate 14, and the first flat surface 17 is flush with the bottom of the pressing plate 15. The end of the pressing switch 13 close to the pressing plate 15 is arranged as a round end, which can abut against the pressing plate 15.

[0065] When the mold 5 abuts against the first inclined surface 16, the push plate 14 is pushed up by the first inclined surface 16 along with the movement of the mold 5, so that the pressing plate 15 is also lifted, and the round end of the pressing switch 13 is pressed during the lifting of the pressing plate 15, so that the heat pipe 7 corresponding to the height of the pressing switch 13 is turned on. Finally, the top of the mold 5 abuts against the first flat surface 17, and continues to move along with the mold 5, so that it enters the rear of the push plate 14 and leaves the push plate 14. At this time, under the action of gravity, the push plate 14 is lowered and reset, the pressing switch 13 is arranged to be turned on when pressed once, and the heat pipe 7 will not be turned off when pressed again subsequently. The external power supply system of the entire heat pipe 7 needs to be turned off to turn off the heat pipe 7, so that the push plate 14 will not turn off the heat pipe 7 when it is reset.

[0066] The distance between the adjacent circular grooves on the same carrier plate 4 is sufficient to accommodate the push plate 14.

[0067] As shown in Figures 6 to 7As shown, one side of the box body 2 is symmetrically provided with a clamping groove, and the other side of the box body 2 is provided with a moving groove, and the sliding plate 18 is slidably installed in the moving groove. The side of the sliding plate 18 close to the clamping groove is provided with a clamping plate 19 corresponding to the clamping groove. The side of the sliding plate 18 away from the clamping plate 19 is fixedly installed with an extrusion block 21. One side of the extrusion block 21 is provided with a second inclined surface 23. The side of the extrusion block 21 away from the sliding plate 18 is provided with a second flat surface connected with the second inclined surface 23. The moving groove is slidably installed with a push block 22 abutting against the second flat surface. One side of the push block 22 is connected with a pull rod 24, and one end of the pull rod 24 extends out of the moving groove. The sliding plate 18 is fixedly connected with the inner wall of the moving groove through the spring 20.

[0068] When a plurality of box bodies 2 are located on the placing table 1, the bottom of the box body 2 is provided with a groove matched with the sliding rail 3. The pull rod 24 is pulled to move outward, so that the push block 22 moves along with it. The push block 22 moves along the second flat surface to the second inclined surface 23 and moves along the second inclined surface 23. At this time, the stretched spring 20 releases the force to reset the sliding plate 18 and the clamping plate 19, so that the clamping plate 19 leaves the clamping groove. At this time, each box body 2 can be separated from each other. Conversely, the push block 22 is reset, the clamping plate 19 can enter the clamping groove, and the connection between each box body 2 is realized. Pushing one box body 2 can realize the synchronous movement of a plurality of box bodies 2. When the mechanical hand is introduced into the subsequent factory, a plurality of molds 5 in the same row can be simultaneously introduced into the circular groove. Then, a plurality of molds 5 are pushed to enter the heating area synchronously, so that the temperature of part of the mold 5 is not reduced too much before the temperature is recovered and cracked. When pouring, the equipment is introduced to pour a plurality of molds 5 in the same row at the same time, so that the temperature of some molds 5 does not decrease too much when they are outside for a long time, which affects the quality of pouring. Through the connection and disconnection of the box body 2, the selection can be made according to the equipment of the factory.

[0069] Working principle: when using, the mold 5 taken out from the heating furnace is placed in the circular groove close to the heat pipe 7, the mold 5 is clamped by the clamping mechanism, after the placement is completed, the box body 2 is pushed to make the carrier plate 4 and the mold 5 move to the area where the heat pipe 7 is located, the heat pipe 7 is started to heat, so that the mold 5 can be heat treated and kept warm, and the temperature approaches the furnace temperature, so that the temperature does not decrease greatly, the heat pipe 7 is arranged on both sides of the mold 5, so that the mold 5 on each box body 2 can be uniformly heated, and the mold 5 does not block the heating effect, then the next mold 5 is placed in the circular groove adjacent to the previous mold 5 on the same box body 2, after the placement is completed, the box body 2 is continuously pushed, so that the just placed mold 5 enters the heating area of the heat pipe 7, and the heat treatment and keeping warm are continuously carried out, so that the temperature does not decrease greatly, and the subsequent operation is the same as above, one mold 5 is placed and moved to the heating area, after all the circular grooves on one box body 2 are used, the use of the circular grooves on the next box body 2 is started, and the above operation is repeated, so that the mold 5 just taken out from the furnace can be immediately kept warm, and the temperature does not decrease suddenly;

[0070] When the shell mold is taken out and placed on the clamping mechanism, even if the shell mold is placed in the placement box close to the heat preservation plate first, when the shell mold close to the heat preservation plate is placed, the placed shell mold can be immediately kept warm by sending the placement box into the heating pipe, but in actual operation, the shell mold is placed one by one, and when the shell mold in the same row is placed, the first placed shell mold is exposed to the air for a period of time, and in the case that the surrounding environment temperature is low, for example, in cold winter, the cold air flows through the factory, so that the temperature of the first placed shell mold decreases more, if the temperature of the shell mold decreases too much, the heating pipe heats the shell mold to the temperature near the furnace temperature when the shell mold is pushed into the heating pipe for heating and keeping warm, in the stainless steel investment casting, the shell mold is made of ceramic, because the thermal expansion coefficient and thermal conductivity of the ceramic shell mold are low, when the temperature decreases too much, a significant temperature difference is formed between the surface and the inside of the shell mold (especially for the shell mold with large wall thickness or complex structure), which causes internal tensile stress; when reheated, the surface expands first, and the inside lags behind, which forms compressive stress again, and repeated thermal stress cycle easily causes microcracks or even through cracks in the weak parts (such as corners and hole edges) of the shell mold;

[0071] In the present application, the mold 5 just taken out from the furnace can be immediately kept warm, so that the temperature does not decrease suddenly, and the above-mentioned situation that the temperature decreases too much and then reheated to cause cracks in the mold 5 does not occur;

[0072] When the molten metal needs to be poured into the mold, the box is pulled out of the heating area of the heating pipe for pouring. In order to keep warm, even if the row of molds that need to be poured is pulled out of the heating area first, the remaining shell molds continue to be in the heating area. However, in actual operation, workers also need to pour the molten metal into the shell molds one by one. The last poured shell mold is exposed to the outside world, and its temperature drops a lot, resulting in a large temperature difference between the shell mold and the molten metal during pouring, which causes poor product quality.

[0073] In the pouring process of the present application, the box body 2 is pulled to move the mold 5 that needs to be poured away from the heating area of the heating pipe 7. The remaining molds 5 on the same box body 2 are still in the heating area. After pouring one mold 5, the same box body 2 is continuously pulled outwards, so that the mold 5 adjacent to the poured mold 5 can be moved away from the heating area for pouring. The subsequent operation is the same as above. When all the molds 5 on one box body 2 are poured, another box body 2 is pulled outwards, and the above operation is repeated. The molds 5 are pulled out of the heating area one by one for pouring. Through the above method, the mold 5 can be poured immediately after it is pulled out of the heating area. The temperature of the remaining mold 5 will not drop suddenly, so that the quality of pouring can be guaranteed. The shell mold will not be exposed to the outside world, and its temperature will not drop a lot, resulting in a large temperature difference between the shell mold and the molten metal during pouring, which causes poor product quality. The quality of pouring is guaranteed.

[0074] Because the molds 5 are of different types and heights, if the mold 5 is low, it enters the heating range of the heating pipe 7, and the heating pipe 7 is turned on. The heating pipe 7 that exceeds the height of the mold 5 cannot be fully utilized, causing waste of energy.

[0075] Therefore, before the mold 5 enters the heating area of the heating pipe 7, the mold 5 is in contact with the first inclined surface 16. With the movement of the mold 5, the first inclined surface 16 pushes the push plate 14 upwards, thereby lifting the pressing plate 15. The pressing plate 15 lifts the round end of the pressing switch 13, so that the pressing switch 13 opens the heating pipe 7 of the corresponding height. Finally, the top of the mold 5 is in contact with the first flat surface 17. With the continuous movement of the mold 5, it enters the rear of the push plate 14 and leaves the push plate 14. At this time, under the action of gravity, the push plate 14 is lowered and reset. The pressing switch 13 is set to open the heating pipe 7 by pressing once. Subsequent pressing will not close the heating pipe 7. The external power supply system of the entire heating pipe 7 needs to be closed to turn off the heating pipe 7, so that the push plate 14 will not turn off the heating pipe 7 when it is reset.

[0076] The above operation enables the mold 5 to be opened according to the height of the mold 5 and the height of the heating pipe 7 in the area below, so that the above energy waste does not occur.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application, and are not limiting.

Claims

1. A heat treatment equipment for stainless steel investment casting, characterized in that, include: A placement table (1) is set on the ground; The box body (2) is provided in a plurality and is slidably mounted on the placement table (1); A slide rail (3) is provided on the placement platform (1) for the box body (2) to slide stably; A carrier plate (4) is arranged in the box body (2), and a plurality of circular grooves are formed on the carrier plate (4), wherein the plurality of circular grooves on the same carrier plate (4) are distributed in a straight line and at equal distances along the direction of the slide rail (3); A clamping mechanism is arranged in the circular groove; A mold (5) is mounted in the circular groove via the clamping mechanism; A heating component is arranged on the placement table (1) and is used to perform heat treatment and heat preservation on the mold (5); The heating assembly comprises: a bracket (6), a heat increasing tube (7) and a fixing assembly, wherein a mounting plate (10) is fixedly mounted on one end of the bracket (6), a rotating shaft (11) is rotatably mounted on the mounting plate (10), and a baffle (12) is provided on the outer fixed sleeve of the rotating shaft (11); The heat increasing tubes (7) are arranged in a plurality and fixedly mounted in the bracket (6) at equal intervals from top to bottom. A vertical groove is symmetrically provided at one end of the bracket (6) away from the baffle (12). Press switches (13) corresponding to the heat increasing tubes (7) are fixedly mounted on the inner wall of the vertical groove at equal intervals from top to bottom. A pressing assembly for pressing the press switch (13) at a corresponding height according to the height of the mold (5) is provided on the bracket (6); The pressing component includes: A push plate (14) is arranged between two adjacent brackets (6); A pressing plate (15) is slidably arranged in the vertical groove, and the pressing plate (15) is connected to the adjacent push plate (14); A first inclined surface (16) is provided on a side of the push plate (14) away from the bracket (6); A first plane (17) is provided at the bottom of the push plate (14); The first plane (17) is flush with the bottom of the pressing plate (15); One end of the push switch (13) close to the push plate (15) is configured as a round end, and the round end can contact the push plate (15).

2. The heat treatment equipment for stainless steel investment casting according to claim 1, characterized in that: Brackets (6) are equidistantly arranged on the placement table (1), and the mold (5) is located between two adjacent brackets (6); A heat increasing pipe (7) is arranged on a side of the bracket (6) close to the mold (5); A fixing assembly can connect the bracket (6) and the placement table (1).

3. The heat treatment equipment for stainless steel investment casting according to claim 2, characterized in that: The outer sleeve of the rotating shaft (11) is provided with a torsion spring, and the two ends of the torsion spring are respectively fixedly connected to the rotating shaft (11) and the mounting plate (10), and the opposite ends of the two adjacent baffles (12) are provided with arc surfaces.

4. The heat treatment equipment for stainless steel investment casting according to claim 3, characterized in that: The spacing between adjacent circular grooves on the same carrier plate (4) is sufficient for the baffle (12) to rotate and reset.

5. The heat treatment equipment for stainless steel investment casting according to claim 1, characterized in that: The spacing between adjacent circular grooves on the same carrier plate (4) is sufficient to accommodate the push plate (14).

6. The heat treatment equipment for stainless steel investment casting according to claim 1, characterized in that: A card slot is symmetrically provided on one side of the box body (2), and a movable slot is opened on the other side of the box body (2). A slide plate (18) is slidably installed in the movable slot, and a card plate (19) corresponding to the card slot is provided on the side of the slide plate (18) close to the card slot. A squeeze block (21) is fixedly installed on the side of the slide plate (18) away from the card plate (19), and a second inclined surface (23) is provided on one side of the squeeze block (21). A second plane connected to the second inclined surface (23) is provided on the side of the squeeze block (21) away from the slide plate (18). A push block (22) in contact with the second plane is slidably installed in the movable slot, and a pull rod (24) is connected to one side of the push block (22). One end of the pull rod (24) extends outside the movable slot, and the slide plate (18) is fixedly connected to the inner wall of the movable slot through a spring (20).

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