Process method for casting steel casting

Abstract

The invention provides a technological method for casting a steel casting. The technological method comprises the following steps that S1, a model is manufactured, specifically, the model is manufactured in a 3D printing mode; molding sand is manufactured, specifically, molding sand raw materials are selected, and then the molding sand raw materials are added into automatic sand mixing equipment to be fully mixed; modeling: selecting a model of a specified steel casting, and then filling the periphery of the model with the molding sand mixed in the step S2 to form a casting mold; steel materials are added into a smelting furnace to be smelted, and the required temperature and chemical components of the steel materials are achieved; before smelting, after a proper steel material is selected, elements in the selected steel material are detected through a portable spectrum analyzer before smelting, and replacement, smelting and smelting adjustment are needed when the steel material is detected to be unqualified. According to the technological method for casting the steel casting, through operation of three modes in the smelting process and monitoring in the machining process, the problem can be prevented from occurring in the smelting process of the steel casting, and problem treatment can be conducted in time.

Description

Technical Field

[0001] The invention relates to the field of steel casting, and in particular to a process method for casting steel castings. Background Art

[0002] Steel castings are made by pouring liquid steel into a specific casting cavity. After cooling and solidification, they become solid steel products with certain shape and dimensional accuracy requirements. It can be a complete mechanical part, such as a gear or valve body, or it can be part of a large structural component, such as a node component of a bridge.

[0003] At present, the casting operation of steel castings needs to be processed by making models, making molding sand, shaping, melting, pouring, cooling, cleaning, heat treatment and inspection. However, when the raw materials of steel castings are not inspected during melting and the melting process is not monitored, when problems occur during the melting process of the raw materials of steel castings, they cannot be discovered in time, which will make it impossible to perform further operations.

[0004] Therefore, it is necessary to provide a process for casting steel castings to solve the above technical problems. Summary of the invention

[0005] The invention provides a process method for casting steel castings, which solves the problem that when the raw materials of the steel castings are not inspected during smelting and the smelting process is not monitored, when problems occur during the smelting process of the raw materials of the steel castings, they cannot be discovered in time, resulting in the inability to perform further operations.

[0006] In order to solve the above technical problems, the present invention provides a process for casting a steel casting, comprising the following steps:

[0007] S1. Model making: Model making is done by 3D printing;

[0008] S2. Making molding sand: Select bentonite, coal powder and quartz sand as raw materials, and then add the bentonite, coal powder and quartz sand raw materials into an automatic sand mixing equipment for sufficient mixing;

[0009] S3, modeling: select a circular or specified shape of the steel casting model, and then fill the mixed sand in S2 around the model to form a casting mold;

[0010] S4, smelting: adding steel material into the melting furnace for smelting to achieve the required steel solution at 1500℃-1600℃;

[0011] S41. Before smelting: After selecting the steel material, the elements inside the selected steel material are detected by a portable spectrometer before smelting. If the detected steel material fails, it needs to be replaced;

[0012] S42, during smelting: installing an online spectrometer on the smelting equipment to monitor the changes in the chemical composition of the molten steel in real time;

[0013] S43, smelting adjustment: when problems occur during the smelting process, the ratio of raw materials can be adjusted in time;

[0014] S5, pouring: pouring the molten steel into the mold prepared in S3;

[0015] S6, cooling: the steel casting is cooled and solidified in the casting mold;

[0016] S7, cleaning: remove the steel casting from the model, and clean and trim it;

[0017] S8, heat treatment: heat treatment is performed on the steel castings cleaned in S7 to increase the overall hardness of the steel castings;

[0018] S9. Inspection: Inspect the finished steel castings.

[0019] Preferably, the smelting of the steel casting in S41 requires the use of a detection device, the detection device comprises a portable spectrometer body, a movable component is disposed on the surface of the portable spectrometer body, and a recovery component is disposed on one side of the movable component.

[0020] Preferably, the movable component comprises two fixed plates, surfaces of the two fixed plates are provided with sliding grooves, and the interiors of the two sliding grooves are slidably connected with sliding blocks.

[0021] Preferably, circular blocks are connected to opposite sides of the two sliding blocks, a fixing frame is connected between the two circular blocks, and the fixing frame is connected to one side of the main body surface of the portable optical spectrum analyzer.

[0022] Preferably, the restoration component comprises a fixed rod, a movable sleeve is sleeved on the surface of the fixed rod, one side of the movable sleeve is connected to one side of the slider, and a spring is sleeved on the surface of the fixed rod and below the movable sleeve.

[0023] Preferably, the top and bottom ends of the fixing rod are both connected with rectangular blocks, and one end of the two rectangular blocks is connected to the top and bottom of one side of the fixing plate.

[0024] Preferably, the bottom of the fixing plate is connected to a base.

[0025] Preferably, a rubber pad is bonded to the bottom of the base.

[0026] Preferably, a disassembly assembly is provided between the two circular blocks, the disassembly assembly comprises two disassembly frames, and a disassembly block is provided between the two disassembly frames.

[0027] Preferably, both ends of the disassembly block are connected with a clamping block, and the end of the disassembly frame is provided with a clamping groove adapted to the clamping block.

[0028] Compared with the related art, the process method for casting steel castings provided by the present invention has the following beneficial effects:

[0029] The present invention provides a process method for casting steel castings. In the smelting operation in S4, S41 is performed before smelting: after selecting suitable steel materials, elements inside the selected steel materials are detected by a portable spectrometer before smelting, and replacement is required when the detection is unqualified; S42 is performed during smelting: an online spectrometer is installed on the smelting equipment to monitor the change of the chemical composition of the molten steel in real time; S43 is performed during smelting adjustment: when problems occur during the smelting process, the ratio between the raw materials can be adjusted in time. When the three modes of operation and the monitoring during the processing process are performed, problems occurring during the smelting process of the steel castings can be prevented and the problems can be handled in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a first embodiment of a process method for casting a steel casting provided by the present invention;

[0031] Figure 2 A schematic structural diagram of a second embodiment of a process method for casting a steel casting provided by the present invention;

[0032] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0033] Figure 4 for Figure 2 A schematic diagram of the overall three-dimensional structure of the device shown;

[0034] Figure 5 A schematic structural diagram of a third embodiment of a process method for casting a steel casting provided by the present invention;

[0035] Figure 6 for Figure 5 An enlarged schematic diagram of part B is shown.

[0036] Numbers in the figure: 1. Main body of the portable spectrum analyzer;

[0037] 2. Movable assembly; 21. Fixed plate; 22. Slide groove; 23. Sliding block; 24. Round block; 25. Fixed frame;

[0038] 3. Restoration assembly; 31. Fixed rod; 32. Movable sleeve; 33. Spring; 34. Rectangular block;

[0039] 4. Base; 5. Rubber pad;

[0040] 6. Disassembly assembly; 61. Disassembly frame; 62. Disassembly block; 63. Card block; 64. Card slot. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0042] First embodiment

[0043] Please refer to Figure 1 ,in, Figure 1 The present invention provides a structural schematic diagram of a first embodiment of a process method for casting a steel casting. A process method for casting a steel casting comprises the following steps:

[0044] S1. Model making: Model making is done by 3D printing;

[0045] S2. Making molding sand: Select bentonite, coal powder and quartz sand as raw materials, and then add the bentonite, coal powder and quartz sand raw materials into an automatic sand mixing equipment for sufficient mixing;

[0046] S3, modeling: select a circular or specified shape of the steel casting model, and then fill the mixed sand in S2 around the model to form a casting mold;

[0047] S4, smelting: adding steel material into the melting furnace for smelting to achieve the required steel solution at 1500℃-1600℃;

[0048] S41. Before smelting: After selecting the steel material, the elements inside the selected steel material are detected by a portable spectrometer before smelting. If the detected steel material fails, it needs to be replaced;

[0049] S42, during smelting: installing an online spectrometer on the smelting equipment to monitor the changes in the chemical composition of the molten steel in real time;

[0050] S43, smelting adjustment: when problems occur during the smelting process, the ratio of raw materials can be adjusted in time;

[0051] S5, pouring: pouring the molten steel into the mold prepared in S3;

[0052] S6, cooling: the steel casting is cooled and solidified in the casting mold;

[0053] S7, cleaning: remove the steel casting from the model, and clean and trim it;

[0054] S8, heat treatment: heat treatment is performed on the steel castings cleaned in S7 to increase the overall hardness of the steel castings;

[0055] S9. Inspection: Inspect the finished steel castings.

[0056] Compared with the related art, the process method for casting steel castings provided by the present invention has the following beneficial effects:

[0057] The present invention provides a process method for casting steel castings. In the smelting operation in S4, S41 is performed before smelting: after selecting suitable steel materials, elements inside the selected steel materials are detected by a portable spectrometer before smelting, and replacement is required when the detection is unqualified; S42 is performed during smelting: an online spectrometer is installed on the smelting equipment to monitor the change of the chemical composition of the molten steel in real time; S43 is performed during smelting adjustment: when problems occur during the smelting process, the ratio between the raw materials can be adjusted in time. When the three modes of operation and the monitoring during the processing process are performed, problems occurring during the smelting process of the steel castings can be prevented and the problems can be handled in time.

[0058] Second embodiment

[0059] Please refer to Figure 2 , Figure 3 and Figure 4 Based on a process method for casting steel castings provided in the first embodiment of the present application, the second embodiment of the present application proposes another process method for casting steel castings. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0060] Specifically, the difference of the process method for casting steel castings provided in the second embodiment of the present application is that, in a process method for casting steel castings, a detection device is required to be used for melting the steel castings in S41, and the detection device includes a portable spectrometer body 1, and a movable component 2 is provided on the surface of the portable spectrometer body 1, and a recovery component 3 is provided on one side of the movable component 2.

[0061] The movable assembly 2 includes two fixed plates 21 . The surfaces of the two fixed plates 21 are provided with sliding grooves 22 . The interiors of the two sliding grooves 22 are slidably connected with sliders 23 .

[0062] The two sliders 23 are connected to opposite sides thereof with circular blocks 24 , and a fixing frame 25 is connected between the two circular blocks 24 . The fixing frame 25 is connected to one side of the surface of the main body 1 of the portable spectrum analyzer.

[0063] The use of the spring 33 can release the squeezing force of the portable spectrometer body 1, and the portable spectrometer body 1 can be restored to its original position. The use of the slide groove 22 and the slider 23 facilitates the operation of driving the portable spectrometer body 1 to move up and down.

[0064] The recovery assembly 3 includes a fixed rod 31 , a movable sleeve 32 is sleeved on the surface of the fixed rod 31 , one side of the movable sleeve 32 is connected to one side of the slider 23 , and a spring 33 is sleeved on the surface of the fixed rod 31 and below the movable sleeve 32 .

[0065] The top and bottom ends of the fixing rod 31 are both connected with rectangular blocks 34 , and one end of the two rectangular blocks 34 is connected to the top and bottom of one side of the fixing plate 21 .

[0066] The bottom of the fixing plate 21 is connected to a base 4 .

[0067] A rubber pad 5 is bonded to the bottom of the base 4 .

[0068] The working principle of a process method for casting steel castings provided by the present invention is as follows:

[0069] When using the portable spectrum analyzer body 1, first place the portable spectrum analyzer body 1 on the raw material surface of the steel casting through the base 4 with the rubber pad 5 at the bottom, and then push the portable spectrum analyzer body 1 to move downward. When the portable spectrum analyzer body 1 moves downward, the slider 23 is driven by the fixed frame 25 and the circular block 24 to move downward in the slide groove 22 opened in the fixed plate 21. When the slider 23 moves downward in the slide groove 22, it drives the movable sleeve 32 to move downward on the surface of the fixed rod 31. When the movable sleeve 32 moves downward on the surface of the fixed rod 31, it squeezes the spring 33 on the surface until the detection head of the portable spectrum analyzer body 1 contacts the raw material surface of the steel casting. Then, the portable spectrum analyzer body 1 can be stably operated to detect the internal elements of the raw material.

[0070] Compared with the related art, the process method for casting steel castings provided by the present invention has the following beneficial effects:

[0071] The present invention provides a process method for casting steel castings. An active component 2 and a recovery component 3 are arranged on the surface of a portable spectrometer main body 1. When the portable spectrometer main body 1 is detecting the raw materials of the steel castings, the portable spectrometer main body 1 can be stably placed on the raw materials for operation, thereby preventing the portable spectrometer main body 1 from shaking during operation and affecting the detection of the raw materials.

[0072] Third embodiment

[0073] Please refer to Figure 5 and Figure 6Based on the process method for casting steel castings provided in the first embodiment of the present application, the third embodiment of the present application proposes another process method for casting steel castings. The third embodiment is only a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0074] Specifically, the difference of a process method for casting a steel casting provided in the third embodiment of the present application is that, in a process method for casting a steel casting, a disassembly assembly 6 is arranged between the two circular blocks 24, and the disassembly assembly 6 includes two disassembly frames 61, and a disassembly block 62 is arranged between the two disassembly frames 61.

[0075] The two disassembly frames 61 are respectively mounted on the left and right sides of the surface of the portable spectrum analyzer body 1. The shapes of the card block 63 and the card slot 64 are adapted T-shaped. The card slot 64 is opened from one side of the disassembly frame 61, and one end of the card slot 64 is not connected, so that the disassembly block 62 drives the card block 63 to connect with the card slot 64 on the disassembly frame 61 to play a limiting role.

[0076] Both ends of the disassembly block 62 are connected with clamping blocks 63 , and the end of the disassembly frame 61 is provided with a clamping slot 64 matched with the clamping block 63 .

[0077] The working principle of a process method for casting steel castings provided by the present invention is as follows:

[0078] During use, when the movable component 2 of the restoration component 3 is disassembled, the disassembly block 62 is pulled to drive the card block 63 to separate from the card slot 64 opened inside the disassembly frame 61. When the disassembly block 62 drives the card block 63 to separate from the card slot 64, the disassembly frame 61 on both sides of the portable spectrometer body 1 can be taken out.

[0079] Compared with the related art, the process method for casting steel castings provided by the present invention has the following beneficial effects:

[0080] The present invention provides a process method for casting steel castings. A disassembly component 6 is arranged between a portable spectrometer body 1 and two circular blocks 24 so that the movable component 2 and the recovery component 3 can be disassembled and stored when the portable spectrometer body 1 is not in use.

[0081] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A process for casting steel castings, characterized in that: The following steps are involved: S1. Model making: Model making is done by 3D printing; S2. Making molding sand: Select bentonite, coal powder and quartz sand as raw materials, and then add the bentonite, coal powder and quartz sand raw materials into an automatic sand mixing equipment for sufficient mixing; S3, modeling: select a circular or specified shape of the steel casting model, and then fill the mixed sand in S2 around the model to form a casting mold; S4, smelting: adding steel material into the melting furnace for smelting to achieve the required steel solution at 1500℃-1600℃; S41. Before smelting: After selecting the steel material, the elements inside the selected steel material are detected by a portable spectrometer before smelting. If the detected steel material fails, it needs to be replaced; S42, during smelting: installing an online spectrometer on the smelting equipment to monitor the changes in the chemical composition of the molten steel in real time; S43, smelting adjustment: when problems occur during the smelting process, the ratio of raw materials can be adjusted in time; S5, pouring: pouring the molten steel into the mold prepared in S3; S6, cooling: the steel casting is cooled and solidified in the casting mold; S7, cleaning: remove the steel casting from the model, and clean and trim it; S8, heat treatment: heat treatment is performed on the steel castings cleaned in S7 to increase the overall hardness of the steel castings; S9. Inspection: Inspect the finished steel castings.

2. The process for casting steel castings according to claim 1, characterized in that: In the S41, a detection device is required for melting the steel castings. The detection device includes a portable spectrometer body. A movable component is disposed on the surface of the portable spectrometer body. A recovery component is disposed on one side of the movable component.

3. The process for casting steel castings according to claim 2, characterized in that: The movable assembly comprises two fixed plates, the surfaces of the two fixed plates are provided with sliding grooves, and the interiors of the two sliding grooves are slidably connected with sliding blocks.

4. The process for casting steel castings according to claim 3, characterized in that: The two sliding blocks are connected to opposite sides thereof with circular blocks, a fixing frame is connected between the two circular blocks, and the fixing frame is connected to one side of the main body surface of the portable spectrum analyzer.

5. The process for casting steel castings according to claim 3, characterized in that: The restoration component comprises a fixed rod, a movable sleeve is sleeved on the surface of the fixed rod, one side of the movable sleeve is connected to one side of the sliding block, and a spring is sleeved on the surface of the fixed rod and below the movable sleeve.

6. The process for casting steel castings according to claim 5, characterized in that: The top and bottom ends of the fixing rod are both connected with rectangular blocks, and one end of the two rectangular blocks is connected with the top and bottom of one side of the fixing plate.

7. The process for casting steel castings according to claim 3, characterized in that: The bottom of the fixing plate is connected with a base.

8. The process for casting a steel casting according to claim 7, characterized in that: A rubber pad is bonded to the bottom of the base.

9. The process for casting steel castings according to claim 4, characterized in that: A disassembly assembly is arranged between the two circular blocks. The disassembly assembly comprises two disassembly frames. A disassembly block is arranged between the two disassembly frames.

10. The process for casting a steel casting according to claim 9, characterized in that: Both ends of the disassembly block are connected with clamping blocks, and the end of the disassembly frame is provided with a clamping groove matched with the clamping block.

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