A method of producing and installing a heat-generating material patch in a sand casting process

Abstract

The application discloses a production and installation method of heating material subsidies in a sand casting process, mainly including the following processing steps: establishment of heating heat preservation subsidies, preparation of heating subsidies, installation of heating subsidies, and processing equipment used in the production and installation method of the heating material subsidies in the sand casting process includes a mixing box, a mixing motor is fixed at the bottom of the mixing box, an output shaft of the mixing motor is fixed with a stirring shaft, the stirring shaft is sealingly penetrated and rotationally connected with the bottom of the mixing box, a plurality of stirring rods are fixed on the side wall of the stirring shaft, and adsorption blocks are fixed on the side wall of the stirring rod. Advantages are that in the application, the consumption cost of the subsidies can be greatly saved for producing high alloy cast steel materials, and other parts which are difficult to be complementarily shrunk and removed can be designed with directional heating subsidies to replace the formed metal subsidies, so that the production cost can be greatly saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting, in particular to a production and installation method of a heating material patch in a sand casting process. BACKGROUND

[0002] The existing sand casting usually sets a metal patch to prolong the feeding distance of the riser, so as to obtain a compact organization form.

[0003] The existing riser patch is in the form of a shaped metal riser patch, and the cavity formed by the movable block in the sand mold making process is naturally formed into a metal patch integrated with the casting after the metal liquid is filled, and then the metal patch is removed by cutting or sawing.

[0004] The removal of the patch will cause the energy consumption of the patch itself and the labor, equipment, etc. during the removal of the patch, especially for the castings with high alloy content, the waste caused by this loss is very large. SUMMARY

[0005] The purpose of the present application is to solve the problem of material waste and high cost in the prior art, and a production and installation method of a heating material patch in a sand casting process is provided.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: a production and installation method of a heating material patch in a sand casting process mainly includes the following processing steps:

[0007] S1, determination of the heating and heat preservation patch: through the setting and simulation of the process simulation software parameters, the size and dimension of the required heating patch are determined, and then the patch mold is designed;

[0008] S2, preparation of the heating patch: the powdery heating material to be used is fully mixed with the self-hardening binder in a certain proportion, and then it is poured into a patch core box with a fixed specific shape for hardening. After hardening, it is taken out for standby;

[0009] S3, installation of the heating patch: the prepared heating patch is placed in the riser position that needs to be patched and fixed on the mold, and then the sand filling operation is performed. After the sand mold is taken out, the heating patch and the sand mold are finally solidified together, and no patch cavity will be left;

[0010] The processing equipment used in the production and installation method of the heating material supplement in the sand casting process comprises a mixing box, a mixing motor is fixed to the bottom of the mixing box, an output shaft of the mixing motor is fixed with a stirring shaft, the stirring shaft is sealingly penetrated and rotationally connected with the bottom of the mixing box, a plurality of stirring rods are fixed to the side wall of the stirring shaft, adsorption blocks are fixed to the side wall of the stirring rod, a vibration groove is formed in the inner wall of the mixing box, a vibration plate is fixed to the side wall of the vibration groove, and an impact ball is connected to the inner wall of the vibration groove through a vibration spring;

[0011] The upper end of the mixing box is abutted with an upper cover, two ingredient boxes are fixed to the upper end of the upper cover, a proportioning and feeding mechanism is arranged in each of the two ingredient boxes, and a feeding pipe is penetratingly arranged at the upper end of the upper cover.

[0012] In the processing equipment, the proportioning and feeding mechanism comprises a lifting sleeve sealingly and slidingly connected with the inner wall of the feeding pipe, a load spring is fixed to the bottom of the lifting sleeve and the upper end of the upper cover, a driving block is embedded in the side wall of the lifting sleeve, an electricity receiving cavity is formed in the side wall of the ingredient box, a pair of resistance plates are fixed to the inner wall of the electricity receiving cavity, an electricity receiving plate is slidingly connected with the inner wall of the electricity receiving cavity, the electricity receiving plate is abutted with the resistance plate, the driving block is a permanent magnet, and the electricity receiving plate is adsorbed by the driving block.

[0013] In the processing equipment, a feeding motor is fixed to the bottom of the upper cover, an output shaft of the feeding motor is penetratingly arranged at the upper end of the upper cover and fixed with a lead screw, the lead screw is threadedly connected with the lifting sleeve, a discharging port is penetratingly formed in the side wall of the ingredient box, a guide plate is fixed to the side wall of the ingredient box, and the guide plate is located opposite to the discharging port and the feeding pipe.

[0014] In the processing equipment, a rotating shaft is rotationally connected with the inner wall of the feeding pipe, and a plurality of rotating plates are fixed to the side wall of the rotating shaft.

[0015] In the processing equipment, a water injection pipe and a drain pipe are penetratingly arranged at the side wall of the mixing box, the drain pipe is communicated with the inside of the mixing box and is internally provided with an electromagnetic valve, a water inlet is penetratingly formed in the side wall of the stirring shaft and communicated with the water injection pipe, the stirring rod is a hollow rod, a distribution port is formed in the side wall of the stirring shaft and communicated with the inside of the stirring rod, and a water injection port is penetratingly formed in the end of the stirring rod.

[0016] In the processing equipment, the adsorption block is a permanent magnet, the impact ball is adsorbed by the magnetic force of the adsorption block, and the vibration plate is an elastic metal plate with a smooth surface, and a plurality of impact balls are arranged.

[0017] Compared with the prior art, the processing equipment has the following advantages:

[0018] 1. In this invention, the cost of removing subsidies can be greatly reduced in the production of high alloy cast steel materials. At the same time, targeted heat-generating subsidies can be designed for other parts that are difficult to feed or remove to replace the forming metal subsidies, which can greatly save production costs.

[0019] 2. In this invention, the vibrating plate can continuously deform and vibrate during the stirring process, thereby preventing the mixed material from adhering to the inner wall of the mixing box, which facilitates centralized collection and processing, as well as subsequent cleaning.

[0020] 3. In this invention, before the material enters the mixing box, it will be fed into the feeding pipe, and the rotating plate will be rotated by the impact of the material, so that the added material is automatically pre-mixed, thereby improving the subsequent mixing efficiency.

[0021] 4. In this invention, the water sprayed during cleaning can effectively cover the inside of the mixing tank, achieving a comprehensive cleaning effect. Furthermore, the water is subjected to centrifugal force during rotation, which will accelerate the spraying and improve the cleaning effect. Finally, the cleaned water is discharged from the drain pipe, completing the effective cleaning of the mixing tank and avoiding the inconvenience of manual cleaning.

[0022] 5. In this invention, not only can the total proportion be accurately achieved, but the ingredients can also be added gradually in proportion during the addition process, so that small amounts are added and stirred in proportion during the mixing process, which greatly improves the mixing quality.

[0023] 6. In this invention, when there is sufficient space inside the mixing chamber in the early stage, materials can be added quickly and mixed quickly. In the later stage, when there are more materials inside the mixing chamber, stirring is relatively laborious and time-consuming. The material addition speed is slowed down, which allows for more precise stirring and mixing. Therefore, it conforms to the actual processing conditions, improves the mixing effect, and thus improves the subsequent preparation quality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the equipment shaft side structure of a production and installation method for supplementing heating materials in the sand casting process proposed in this invention.

[0025] Figure 2 This is a bottom view of the equipment structure of a production and installation method for supplementing heating materials in the sand casting process proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the front structure of the equipment for the production and installation method of the heating material subsidy in the sand casting process proposed in this invention.

[0027] Figure 4 This is a half-sectional view of the equipment used in the production and installation method for supplementing heating materials during sand casting, as proposed in this invention.

[0028] Figure 5 A top view of the equipment for the production and installation method of the heating material patch in the sand casting process according to the present application;

[0029] Figure 6 A top view of the equipment for the production and installation method of the heating material patch in the sand casting process according to the present application; Figure 4 An enlarged schematic view of the A part in the middle;

[0030] Figure 7 A top sectional view of the batching box part in the equipment for the production and installation method of the heating material patch in the sand casting process according to the present application;

[0031] Figure 8 A structural schematic view of the stirring shaft part in the equipment for the production and installation method of the heating material patch in the sand casting process according to the present application.

[0032] In the figure: 1 mixing box, 2 mixing motor, 3 stirring shaft, 4 stirring rod, 5 upper cover, 6 batching box, 7 feeding pipe, 8 vibrating tank, 9 vibrating plate, 10 vibrating spring, 11 impact ball, 12 adsorption block, 13 feeding motor, 14 screw rod, 15 lifting sleeve, 16 load spring, 17 discharge port, 18 guide plate, 19 power receiving cavity, 20 power receiving plate, 21 resistance plate, 22 driving block, 23 rotating shaft, 24 rotating plate, 25 water injection pipe, 26 drain pipe, 27 water inlet, 28 distribution port, 29 water injection port. DETAILED DESCRIPTION

[0033] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0034] EXAMPLE

[0035] Referring to Figures 1-8 A production and installation method of a heating material patch in a sand casting process mainly includes the following processing steps:

[0036] S1, establishment of the heating and heat preservation patch: through the setting of the parameters of the process simulation software and simulation, the size and dimensions of the required heating patch are determined, and the heating patch can be smaller than the metal patch in general cases, and then the patch mold is designed;

[0037] S2, preparation of the heating patch: the powdery heating material to be used is fully mixed with a self-hardening binder in a certain proportion, and then is poured into a patch core box with a fixed specific shape for hardening, and after hardening, it is taken out for standby;

[0038] S3, installation of the heating patch: the prepared heating patch is placed on the riser part that needs to be patched and fixed on the mold, and then the sand filling operation is performed, and after the sand mold is taken out, the heating patch and the sand mold are finally solidified together, and no patch cavity will be left;

[0039] The heat insulation subsidy is to use the heat generating material to replace the metal material of the subsidy, after pouring, the subsidy material burns to generate heat to heat the metal liquid, so that the metal liquid at the subsidy position remains liquid for a certain period of time to act as a feeding channel, and after the casting is completely cooled, the position does not need to be removed because of the final collapse after burning;

[0040] For producing high alloy cast steel material, the cost of removing the subsidy can be greatly saved, and other parts which are difficult to feed and remove can also be designed for directional heat subsidy instead of forming metal subsidy, which can greatly save the production cost;

[0041] The processing equipment used in the production and installation method of the heat generating material subsidy in the sand casting process includes a mixing box 1, a mixing motor 2 is fixed at the bottom of the mixing box 1, a stirring shaft 3 is fixed to the output shaft of the mixing motor 2, the stirring shaft 3 is rotatably connected with the bottom of the mixing box 1, a plurality of stirring rods 4 are fixed to the side wall of the stirring shaft 3, adsorption blocks 12 are fixed to the side wall of the stirring rod 4, a vibration groove 8 is formed in the inner wall of the mixing box 1, a vibration plate 9 is fixed to the side wall of the vibration groove 8, and a striking ball 11 is connected to the inner wall of the vibration groove 8 through a vibration spring 10;

[0042] The upper end of the mixing box 1 abuts against an upper cover 5, two batching boxes 6 are fixed to the upper end of the upper cover 5, and each of the two batching boxes 6 is provided with a proportioning feeding mechanism, and a feeding pipe 7 is inserted through the upper end of the upper cover 5.

[0043] The proportioning feeding mechanism includes a lifting sleeve 15 which is sealingly and slidingly connected with the inner wall of the feeding pipe 7, a load spring 16 is fixed to the bottom of the lifting sleeve 15 and the upper end of the upper cover 5, a driving block 22 is embedded in the side wall of the lifting sleeve 15, an electricity receiving cavity 19 is formed in the side wall of the batching box 6, a pair of resistance plates 21 are fixed to the inner wall of the electricity receiving cavity 19, an electricity receiving plate 20 is slidingly connected with the inner wall of the electricity receiving cavity 19, the electricity receiving plate 20 abuts against the resistance plate 21, the driving block 22 is a permanent magnet, and the electricity receiving plate 20 is adsorbed by the driving block 22.

[0044] The bottom of the upper cover 5 is fixed with a feeding motor 13, the output shaft of the feeding motor 13 penetrates through the upper end of the upper cover 5 and is fixed with a lead screw 14, the lead screw 14 is threadedly connected with the lifting sleeve 15, a discharge port 17 is formed through the side wall of the batching box 6, a guide plate 18 is fixed to the side wall of the batching box 6, the guide plate 18 corresponds in position to the discharge port 17 and the feeding pipe 7, the lead screw 14 can drive the lifting sleeve 15 to move up and down by rotating, the lifting sleeve 15 can drive the lead screw 14 to rotate by moving up and down, the resistance plates 21 complete electricity receiving through the electricity receiving plate 20, the electricity receiving plates 21 have different resistance values at different electricity receiving positions, so as to control the rotating speed of the feeding motor 13, and then control the feeding speed, so as to ensure that the feeding process is reasonable according to the proportioning.

[0045] The inner wall of the feeding pipe 7 is rotationally connected with a rotating shaft 23, and a plurality of rotating plates 24 are fixed to the side wall of the rotating shaft 23. The material will be put into the feeding pipe 7 before entering the mixing box 1, and the rotating plates 24 will be rotated under the impact of the material, so that the added material is automatically premixed, thereby improving the subsequent mixing efficiency.

[0046] The side wall of the mixing box 1 is provided with a water injection pipe 25 and a drain pipe 26. The drain pipe 26 is connected with the inside of the mixing box 1 and is provided with an electromagnetic valve. The side wall of the stirring shaft 3 is provided with a water inlet 27 connected with the water injection pipe 25. The stirring rod 4 is a hollow rod. The side wall of the stirring shaft 3 is provided with a distribution port 28 connected with the inside of the stirring rod 4. The end of the stirring rod 4 is provided with a water injection port 29. Water is supplied through the stirring shaft 3 to realize the rotation of the cleaning water flow, so as to comprehensively cover the mixing box 1 and improve the cleaning effect.

[0047] The adsorption block 12 is a permanent magnet, and the impact ball 11 is magnetically attracted by the adsorption block 12. The vibrating plate 9 is a smooth elastic metal plate. A plurality of impact balls 11 are arranged. The impact ball 11 continuously impacts the vibrating plate 9 in the rotation process of the adsorption block 12, so that the vibrating plate 9 can continuously vibrate, so that the material is difficult to adhere to the surface, thereby facilitating the collection of the mixed material and the cleaning of the mixing box 1.

[0048] In the present application, during the mixing process of the heating material and the binder, the mixing motor 2 drives the stirring shaft 3 to rotate, thereby driving each stirring rod 4 to rotate, and the adsorption block 12 on the stirring rod 4 also rotates, thereby enabling the adsorption block 12 to intermittently attract the impact ball 11 in the rotation process. The impact ball 11 collides with the vibrating plate 9 under the action of the magnetic force. Since the magnetic attraction is intermittent, the self-resetting of the vibrating spring 10 enables the impact ball 11 to effectively repeatedly impact the vibrating plate 9, so that the vibrating plate 9 can continuously deform and vibrate during stirring, thereby avoiding the adhesion of the mixed material to the inner wall of the mixing box 1, and facilitating the centralized collection and processing, and the subsequent cleaning.

[0049] During subsequent cleaning, the water injection pipe 25 is connected with the external water pump, water is injected into the inside of the stirring shaft 3 through the water inlet 27, the water flow enters each stirring rod 4 through the distribution port 28, and then is sprayed out through the water injection port 29. Since the stirring rod 4 continuously rotates, the sprayed water flow can effectively cover the inside of the mixing box 1, achieving the effect of comprehensive cleaning. During the rotation process, the water flow is accelerated by the centrifugal force, thereby improving the cleaning effect. Finally, the water flow after cleaning is concentratedly discharged through the drain pipe 26, completing the effective cleaning of the mixing box 1 and avoiding the inconvenience brought by manual cleaning.

[0050] When accurate proportioning mixing is required, the ingredients can be added to the ingredient box 6, under the action of gravity, the lifting sleeve 15 will be pressed down, the load spring 16 will be contracted, and the lifting sleeve 15 will rotate during the downward movement. The surface of the lifting sleeve 15 is provided with a scale, so that the weight ratio of the added ingredients can be accurately measured, thereby realizing accurate proportioning of the total amount of ingredient addition. The downward movement of the lifting sleeve 15 will effectively drive the contact plate 20 to move downward, thereby changing the contact position of the contact plate 20 and the resistance plate 21, and thereby changing the actual access resistance value of the resistance plate 21, so that the resistance value of the resistance plate 21 accessed by different weight ratios of materials is different, and the weight ratio is equivalent to the ratio of the access resistance value, and the access resistance value will directly affect the current value of the circuit, thereby changing the speed of the corresponding feeding motor 13, and the speed ratio of the two feeding motors 13 is the same as the proportioning, and the rotation of the feeding motor 13 will drive the screw rod 14 to rotate, thereby making the lifting sleeve 15 move upward to push the material into the feeding pipe 7, thereby completing the feeding. Since the speed of the feeding motor 13 is proportional, the speed of the screw rod 14 is proportional, the upward speed of the lifting sleeve 15 is proportional, and the addition of the material is proportional, thereby effectively controlling the proportioning of the feeding. Not only can the total proportioning be accurate, but also can be added gradually according to the proportion during the addition process, so that the mixing process is less and more proportional addition and stirring, which greatly improves the mixing and stirring quality.

[0051] At the same time, during the feeding process, the lifting sleeve 15 constantly moves upward, which constantly changes the actual access resistance value of the resistance plate 21, so that the speed of the feeding motor 13 is constantly reduced, but still maintains the corresponding proportion. During the whole feeding process, the materials are added according to the proportion, and the feeding speed is gradually slowed down. Therefore, when the internal space of the mixing box 1 is sufficient in the early stage, the materials can be quickly added and mixed, and when the internal space of the mixing box 1 is sufficient in the late stage, the materials can be slowly added and mixed, so that the mixing effect is improved, thereby improving the subsequent preparation quality.

[0052] The above only describes the preferred embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of producing and installing a heat material patch in a sand casting process, characterized by: Mainly includes the following processing steps: S1, the establishment of heat preservation subsidies: through the process simulation software parameter setting and simulation, determine the size and size of the required heat subsidies, and then the subsidy mold design; S2, the preparation of heat subsidies: the use of powder heat material and self-hardening binder are mixed in a certain amount of proportion, and then put into a fixed specific shape of the subsidy core box hardening, after hardening, take out for standby; S3, the installation of heat subsidies: the prepared heat subsidies are placed in the required subsidies of the riser part and fixed on the mold, then the sand filling operation is carried out, after the sand mold is taken out, the heat subsidies and the sand mold are finally solidified together, which will not leave the subsidy cavity; The production and installation method of the heat material subsidies in the above sand casting process uses the mixing box (1), the bottom of the mixing box (1) is fixed with the mixing motor (2), the output shaft of the mixing motor (2) is fixed with the stirring shaft (3), the stirring shaft (3) is sealingly penetrated and rotationally connected with the bottom of the mixing box (1), the side wall of the stirring shaft (3) is fixed with a plurality of stirring rods (4), the side wall of the stirring rod (4) is fixed with an adsorption block (12), the inner wall of the mixing box (1) is provided with a vibration groove (8), the side wall of the vibration groove (8) is fixed with a vibration plate (9), and the inner wall of the vibration groove (8) is connected with an impact ball (11) through a vibration spring (10); The upper end of the mixing box (1) is abutted with the upper cover (5), the upper end of the upper cover (5) is fixed with two batching boxes (6), and the inside of the two batching boxes (6) is provided with a proportioning feeding mechanism, and the upper end of the upper cover (5) is penetrated and inserted with a feeding pipe (7); The proportioning feeding mechanism includes a lifting sleeve (15) sealingly and slidingly connected with the inner wall of the feeding pipe (7), the bottom of the lifting sleeve (15) is fixed with a load spring (16) together with the upper end of the upper cover (5), the side wall of the lifting sleeve (15) is embedded with a driving block (22), the side wall of the batching box (6) is provided with an electricity receiving cavity (19), the inner wall of the electricity receiving cavity (19) is fixed with a pair of resistance plates (21), the inner wall of the electricity receiving cavity (19) is slidingly connected with an electricity receiving plate (20), the electricity receiving plate (20) is abutted with the resistance plate (21), the driving block (22) is a permanent magnet, and the electricity receiving plate (20) is adsorbed by the driving block (22); The bottom of the upper cover (5) is fixed with a feeding motor (13), the output shaft of the feeding motor (13) penetrates the upper end of the upper cover (5) and is fixed with a lead screw (14), the lead screw (14) is threadedly connected with the lifting sleeve (15), the side wall of the batching box (6) is penetrated and provided with a discharge port (17), the side wall of the batching box (6) is fixed with a guide plate (18), and the guide plate (18) is positioned corresponding to the discharge port (17) and the feeding pipe (7); The inner wall of the feeding pipe (7) is rotationally connected with a rotating shaft (23), and the side wall of the rotating shaft (23) is fixed with a plurality of rotating plates (24). The side wall of the mixing box (1) is provided with a water injection pipe (25) and a drain pipe (26), the drain pipe (26) is communicated with the inside of the mixing box (1) and is provided with an electromagnetic valve, the side wall of the stirring shaft (3) is provided with a water inlet (27) communicated with the water injection pipe (25), the stirring rod (4) is a hollow rod, the side wall of the stirring shaft (3) is provided with a distribution port (28) communicated with the inside of the stirring rod (4), and the end of the stirring rod (4) is provided with a water injection port (29).

2. A method of producing and installing a heat generating material patch in a sand casting process according to claim 1, characterized in that, The adsorption block (12) is a permanent magnet, the impact ball (11) is magnetically adsorbed by the adsorption block (12), the vibrating plate (9) is a smooth elastic metal plate, and the impact ball (11) is provided with a plurality of.

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