Method for local heating of a ring forging

Abstract

This invention relates to the field of forging technology, and more specifically, to a method for local heating of a ring forging. The method includes steps S11: obtaining the position of a second segment of the ring forging; step S12: based on the obtained position of the second segment being located at the middle of the length direction of the ring forging, obtaining the positions of a first segment and a third segment; step S13: based on the obtained position of the first segment, fitting a first heat-insulating component onto the first segment; step S14: based on the obtained position of the third segment, fitting a second heat-insulating component onto the third segment; and step S15: placing the ring forging with the first and second heat-insulating components in a heating furnace for heating. This solves the problem of how to accurately perform local heating of a ring forging.

Description

Technical Field

[0001] This invention relates to the field of forging technology, and more specifically, to a method for local heating of ring forgings. Background Technology

[0002] During the forging process of ring forging production, it is often necessary to adjust the shape of the ring forging during forming. When the ring forging needs to be locally deformed in a corresponding area, if the entire surface of the ring forging is heated without any measures, the entire ring forging will be heated. During forming, the overall deformation capacity will be relatively uniform, resulting in a large error in the overall deformation, making it difficult to achieve the purpose of local forming. Summary of the Invention

[0003] To address the problem of how to precisely localize heating of ring forgings, this invention provides a method for localizing ring forging heating, comprising:

[0004] Step S11: Obtain the position of the second segment of the ring forging; wherein, the second segment includes the deformed part of the ring forging that has been locally heated;

[0005] Step S12: Based on the obtained second segment being located at the middle position along the length direction of the ring forging, the positions of the first segment and the third segment are obtained; wherein, the first segment, the second segment, and the third segment are fixedly connected in sequence; the length of the first segment is greater than or equal to the length of the third segment;

[0006] Step S13: Based on the obtained position of the first segment, the first insulation component is fitted onto the first segment; wherein, the first insulation component includes a first outer insulation unit, a first inner insulation unit, and a first pipe; the first outer insulation unit is fitted onto the outer periphery and end side of the first segment, the first inner insulation unit is fitted onto the inner periphery of the first segment, and the first pipe is disposed in the internal hollow area of ​​the first segment.

[0007] Step S14: Based on the obtained position of the third segment, a second insulation component is fitted onto the third segment; wherein, the second insulation component includes a second outer insulation unit, a second inner insulation unit, and a second pipe; the second outer insulation unit is fitted onto the outer periphery and end side of the third segment, the second inner insulation unit is fitted onto the inner periphery of the third segment, and the second pipe is disposed in the internal hollow region of the third segment; the cross-sectional area of ​​the first pipe is larger than the cross-sectional area of ​​the second pipe; the first insulation component and the second insulation component are spaced apart.

[0008] Step S15: The ring forging with the first insulation component and the second insulation component is placed in a heating furnace for heating; wherein the first insulation component is located above the second insulation component.

[0009] In some embodiments, the second segment further includes a connecting portion for local heating of the ring forging; one end of the deformed portion is fixedly connected to the first segment via one of the connecting portions, and the other end is fixedly connected to the first segment via another connecting portion.

[0010] In some embodiments, H0*0.1≤H4≤H0*0.5, where H4 is the length of the connecting portion and H0 is the length of the deformable portion.

[0011] In some embodiments, the central axis of the first pipe coincides with the central axis of the ring forging; the central axis of the second pipe is spaced apart from the central axis of the ring forging.

[0012] In some embodiments, the minimum wall thickness of the first inner insulation unit is greater than or equal to the maximum wall thickness of the first outer insulation unit; ΦA1 / 3≤ΦB≤ΦA1 / 2, where ΦA is the minimum inner diameter of the first segment and ΦB is the inner diameter of the first pipe.

[0013] In some embodiments, the minimum wall thickness of the second inner insulation unit is greater than or equal to the maximum wall thickness of the second outer insulation unit.

[0014] In some embodiments, the first external insulation unit includes a first far-forged insulation portion and a first adjacent-forged insulation portion; the first adjacent-forged insulation portion, the first far-forged insulation portion, and the first internal insulation unit are fixedly connected in sequence; the outer peripheral wall of the first pipe is fixedly connected to the first internal insulation unit; the thickness of the first adjacent-forged insulation portion is greater than the thickness of the first far-forged insulation portion.

[0015] In some embodiments, the second external insulation unit includes a second far-forged insulation portion and a second adjacent forged insulation portion; the second adjacent forged insulation portion, the second far-forged insulation portion, and the second internal insulation unit are fixedly connected in sequence; the outer peripheral wall of the second pipe is fixedly connected to the second internal insulation unit; the thickness of the second adjacent forged insulation portion is greater than the thickness of the second far-forged insulation portion.

[0016] In some embodiments, the thickness of the first forged insulation portion is 30mm-40mm; the thickness of the second forged insulation portion is 30mm-40mm.

[0017] In some embodiments, the method for local heating of the ring forging further includes:

[0018] Step S16: Based on the set temperature value of the ring forging in the heating furnace and the set time, the ring forging is taken out of the heating furnace; wherein, the set temperature is 950℃-1050℃.

[0019] To solve the problem of how to accurately perform localized heating on ring forgings, the present invention has the following advantages:

[0020] 1. A first outer insulation unit is fitted onto the outer periphery and end sides of the first segment of the ring forging, and a first inner insulation unit is fitted onto the inner periphery of the first segment. A first conduit is disposed within the hollow area of ​​the first segment. The first conduit can compress the first inner insulation unit towards the first outer insulation unit, thereby ensuring that the first insulation component tightly wraps around the first segment of the ring forging, reducing the heating effect of the furnace on the first segment. A second outer insulation unit is fitted onto the outer periphery and end sides of the third segment of the ring forging, and a second inner insulation unit is fitted onto the inner periphery of the third segment. A second conduit is disposed within the hollow area of ​​the third segment. The second conduit can compress the second inner insulation unit towards the second outer insulation unit, thereby ensuring that the second insulation component tightly wraps around the third segment of the ring forging, reducing the heating effect of the furnace on the third segment.

[0021] 2. The cross-sectional area of ​​the first pipe is set to be larger than that of the second pipe. When the heating furnace heats the ring forging, the air pressure in the second pipe can be greater than that in the first pipe. The hot air can flow from the second pipe into the first pipe quickly, thereby rapidly heating the inner wall of the second section of the ring forging and improving the local heating efficiency. Attached Figure Description

[0022] Figure 1 A schematic diagram of a method for local heating of a ring forging according to one embodiment is shown;

[0023] Figure 2 A schematic diagram of a ring forging according to one embodiment is shown;

[0024] Figure 3 A schematic diagram of another embodiment of the ring forging is shown.

[0025] Reference numerals: 01 Ring forging; 11 First segment; 12 Second segment; 121 Deformation part; 122 Connecting part; 13 Third segment; 02 First insulation component; 21 First external insulation unit; 211 First far-forging insulation part; 212 First adjacent forging insulation part; 22 First internal insulation unit; 23 First pipe; 03 Second insulation component; 31 Second external insulation unit; 311 Second far-forging insulation part; 312 Second adjacent forging insulation part; 32 Second internal insulation unit; 33 Second pipe. Detailed Implementation

[0026] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0027] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0028] This embodiment discloses a method for local heating of a ring forging 01, such as... Figure 1 As shown, it may include:

[0029] Step S11: Obtain the position of the second segment 12 of the ring forging 01; wherein, the second segment 12 includes the deformed part 121 of the ring forging 01 that is locally heated;

[0030] Step S12: Based on the fact that the second segment 12 is located at the middle position along the length direction of the ring forging 01, the positions of the first segment 11 and the third segment 13 are obtained; wherein, the first segment 11, the second segment 12, and the third segment 13 are fixedly connected in sequence; the length of the first segment 11 is greater than or equal to the length of the third segment 13;

[0031] Step S13: Based on the obtained position of the first segment 11, the first insulation component 02 is fitted onto the first segment 11; wherein, the first insulation component 02 includes a first outer insulation unit 21, a first inner insulation unit 22, and a first pipe 23; the first outer insulation unit 21 is fitted onto the outer periphery and end side of the first segment 11, the first inner insulation unit 22 is fitted onto the inner periphery of the first segment 11, and the first pipe 23 is disposed in the internal hollow area of ​​the first segment 11;

[0032] Step S14: Based on the obtained position of the third segment 13, the second insulation component 03 is fitted onto the third segment 13; wherein, the second insulation component 03 includes a second outer insulation unit 31, a second inner insulation unit 32, and a second pipe 33; the second outer insulation unit 31 is fitted onto the outer periphery and end side of the third segment 13, the second inner insulation unit 32 is fitted onto the inner periphery of the third segment 13, and the second pipe 33 is disposed in the internal hollow area of ​​the third segment 13; the cross-sectional area of ​​the first pipe 23 is larger than the cross-sectional area of ​​the second pipe 33; the first insulation component 02 and the second insulation component 03 are spaced apart;

[0033] Step S15: Place the ring forging 01 with the first heat-insulating component 02 and the second heat-insulating component 03 in a heating furnace for heating; wherein the first heat-insulating component 02 is located above the second heat-insulating component 03.

[0034] In this embodiment, as Figure 2 As shown, the ring forging 01 can be ring-shaped overall, and may include a first segment 11, a second segment 12, and a third segment 13. The first segment 11, second segment 12, and third segment 13 can be sequentially and fixedly connected. The local heating protection device for the ring forging 01 may include a first insulation component 02 and a second insulation component 03. Both the first insulation component 02 and the second insulation component 03 can be made of asbestos material. The first insulation component 02 can be used to wrap the first segment 11 of the ring forging 01. The second insulation component 03 can be used to wrap the third segment 13 of the ring forging 01.

[0035] like Figure 1 As shown, the local heating method for ring forging 01 may include steps S11 to S15, and each step is described in detail below:

[0036] Step S11: Before locally heating the ring forging 01, the position of the second segment 12 of the ring forging 01 can be obtained first. The second segment 12 may include the deformed portion 121 of the ring forging 01 during local heating. For example... Figure 3 As shown, the length of the second segment 12 can be H2.

[0037] Step S12: After the location of local heating on the ring forging 01 is determined (i.e., the second segment 12 is located at the middle of the length of the ring forging 01), the positions of the first segment 11 and the third segment 13 can be obtained; where, for example... Figure 3As shown, the first segment 11, the second segment 12, and the third segment 13 are fixedly connected in sequence; the length H1 of the first segment 11 is greater than or equal to the length H3 of the third segment 13.

[0038] Step S13: After determining the position of the first segment 11 of the ring forging 01, the first insulation component 02 (which may be asbestos) can be fitted onto the first segment 11. The first insulation component 02 may include a first outer insulation unit 21, a first inner insulation unit 22, and a first pipe 23. The end of the first outer insulation unit 21 furthest from the second segment 12 can be fixedly connected to the end of the first inner insulation unit 22 furthest from the second segment 12. The outer wall of the first pipe 23 can abut against the inner wall of the first inner insulation unit 22. The first outer insulation unit 21 can be fitted onto the outer periphery and end sides of the first segment 11, the first inner insulation unit 22 can be fitted onto the inner periphery of the first segment 11, and the first pipe 23 can be located in the hollow area inside the first segment 11. The surface of the first segment 11 can be wrapped with 4-5 layers of asbestos, each layer being 15mm thick. After each layer of asbestos is wrapped, it must be immediately and tightly wound with fine iron wire (the diameter of the fine iron wire can be less than or equal to 1mm) to increase the compactness of the asbestos and reduce gaps. After each layer of asbestos is wrapped, thin iron wire is wrapped around it to ensure that the first segment 11 of the ring forging 01 is not heated or has poor heating effect. After each layer of asbestos is wrapped around the surface of the first segment 11, glass adhesive can be sprinkled on the upper surface of the asbestos to further reduce the gap between the asbestos and the ring forging 01. After the asbestos has wrapped the outer wall of the first segment 11, the inner wall is then filled with asbestos. This ensures a tight wrapping of the first segment 11 of the ring forging 01, preventing the first segment 11 from deforming due to heat during subsequent heating.

[0039] In step S14, after determining the position of the third segment 13 of the ring forging 01, the second insulation component 03 can be fitted onto the third segment 13. The second insulation component 03 may include a second outer insulation unit 31, a second inner insulation unit 32, and a second conduit 33. The end of the second outer insulation unit 31 furthest from the second segment 12 can be fixedly connected to the end of the second inner insulation unit 32 furthest from the second segment 12. The outer wall of the second conduit 33 can abut against the inner wall of the second inner insulation unit 32. The second outer insulation unit 31 is fitted onto the outer periphery and end sides of the third segment 13, the second inner insulation unit 32 is fitted onto the inner periphery of the third segment 13, and the second conduit 33 is located in the hollow area inside the third segment 13. This tightly wraps the third segment 13 of the ring forging 01, preventing deformation of the third segment 13 due to heat during subsequent heating. The cross-sectional area of ​​the first pipe 23 can be larger than that of the second pipe 33. The first heat insulation component 02 and the second heat insulation component 03 are arranged at intervals, so that when the ring forging 01 is heated later, the hot airflow can quickly flow from the second pipe 33 into the first pipe 23, thereby causing the temperature of the inner wall of the second section 12 to rise rapidly and improving the forging efficiency.

[0040] In step S15, after the first heat-insulating component 02 and the second heat-insulating component 03 tightly wrap the first segment 11 and the third segment 13 of the ring forging 01, the ring forging 01 with the first heat-insulating component 02 and the second heat-insulating component 03 installed can be placed in a heating furnace for heating. During the heating process, due to the obstruction of the heat source by the first heat-insulating component 02 and the second heat-insulating component 03, the temperature rise of the first segment 11 and the third segment 13 of the ring forging 01 can be effectively reduced, thereby achieving local heating of the second segment 12 of the ring forging 01. The first heat-insulating component 02 is located above the second heat-insulating component 03, allowing hot air to quickly flow from the second pipe 33 into the first pipe 23, thus rapidly heating the inner wall of the second segment 12 of the ring forging 01.

[0041] In some embodiments, such as Figure 2 As shown, the second segment 12 also includes a connecting part 122 for local heating of the ring forging 01; one end of the deformed part 121 is fixedly connected to the first segment 11 through a connecting part 122, and the other end is fixedly connected to the first segment 11 through another connecting part 122.

[0042] In this embodiment, as Figure 2 As shown, the second segment 12 may also include a connecting part 122 for local heating of the ring forging 01. One end of the deformable part 121 can be fixedly connected to the first segment 11 through a connecting part 122, and the other end can be fixedly connected to the first segment 11 through another connecting part 122, thereby preventing the second segment 12 from cracking due to excessive deformation when the ring forging 01, which has been locally heated, is subjected to extrusion deformation.

[0043] In some embodiments, such as Figure 3 As shown, H0*0.1≤H4≤H0*0.5, where H4 is the length of the connecting part 122 and H0 is the length of the deformable part 121.

[0044] In this embodiment, the length H4 of the connecting part 122 can be greater than or equal to 0.1 times the length H0 of the deformed part 121, and can be less than or equal to 0.5 times the length H0 of the deformed part 121, to ensure that the connecting part 122 can avoid the second segment 12 from cracking due to excessive deformation when the ring forging 01, which has been locally heated, is subjected to extrusion deformation.

[0045] In some embodiments, such as Figure 2 As shown, the central axis of the first pipe 23 coincides with the central axis of the ring forging 01; the central axis of the second pipe 33 is spaced apart from the central axis of the ring forging 01.

[0046] In this embodiment, as Figure 2As shown, the central axis of the first pipe 23 can coincide with the central axis of the ring forging 01. The central axis of the second pipe 33 can be spaced apart from the central axis of the ring forging 01. This allows the hot gas flow to be drawn in by the first pipe 23 when it passes through the inner circumferential region of the second section 12 after exiting the second pipe 33, accelerating the flow speed of the hot gas flow and allowing the temperature of the inner wall of the second section 12 to rise rapidly, thereby improving forging efficiency.

[0047] In some embodiments, such as Figure 3 As shown, the minimum wall thickness of the first inner insulation unit 22 is greater than or equal to the maximum wall thickness of the first outer insulation unit 21; ΦA1 / 3≤ΦB≤ΦA1 / 2, where ΦA is the minimum inner diameter of the first segment 11 and ΦB is the inner diameter of the first pipe 23.

[0048] In this embodiment, as Figure 3 As shown, due to the higher temperature in the inner circumferential region of the ring forging 01 during heating, the minimum wall thickness T4 of the first inner insulation unit 22 can be greater than or equal to the maximum wall thickness T5 of the first outer insulation unit 21, thereby ensuring the heat insulation effect of the first inner insulation unit 22. The inner diameter ΦB of the first pipe 23 can be greater than or equal to 1 / 3 of the minimum inner diameter ΦA of the first section 11, and can be less than or equal to 1 / 2 of the minimum inner diameter ΦA of the first section 11.

[0049] In some embodiments, such as Figure 3 As shown, the minimum wall thickness of the second inner insulation unit 32 is greater than or equal to the maximum wall thickness of the second outer insulation unit 31.

[0050] In this embodiment, as Figure 3 As shown, the minimum wall thickness T3 of the second inner insulation unit 32 can be greater than or equal to the maximum wall thickness T2 of the second outer insulation unit 31, thereby ensuring the heat insulation effect of the second inner insulation unit 32.

[0051] In some embodiments, such as Figure 2 As shown, the first external insulation unit 21 includes a first far-forged insulation part 211 and a first adjacent forged insulation part 212; the first adjacent forged insulation part 212, the first far-forged insulation part 211, and the first internal insulation unit 22 are fixedly connected in sequence; the outer peripheral wall of the first pipe 23 is fixedly connected to the first internal insulation unit 22; the thickness of the first adjacent forged insulation part 212 is greater than the thickness of the first far-forged insulation part 211.

[0052] In this embodiment, as Figure 2As shown, the first outer insulation unit 21 may include a first far-forging insulation portion 211 and a first adjacent-forging insulation portion 212. The first far-forging insulation portion 211 may be disposed on the outer wall of the end of the first segment 11 away from the second segment 12. The first adjacent-forging insulation portion 212 may be disposed on the outer wall of the end of the first segment 11 close to the second segment 12. The first adjacent-forging insulation portion 212, the first far-forging insulation portion 211, and the first inner insulation unit 22 may be fixedly connected in sequence. The outer peripheral wall of the first pipe 23 is fixedly connected to the first inner insulation unit 22, so that the outer peripheral wall of the first pipe 23 can press the first inner insulation unit 22 towards the inner wall of the first segment 11, thereby ensuring the heat insulation effect of the first inner insulation unit 22 on the inner wall of the first segment 11 of the ring forging 01. Figure 3 As shown, the thickness T5 of the first adjacent forging insulation part 212 can be greater than the thickness T6 of the first distant forging insulation part 211, thereby ensuring the heat insulation effect of the first outer insulation unit 21 on the side of the outer peripheral wall of the first section 11 close to the second section 12.

[0053] In some embodiments, such as Figure 2 As shown, the second outer insulation unit 31 includes a second far-forged insulation part 311 and a second adjacent forged insulation part 312; the second adjacent forged insulation part 312, the second far-forged insulation part 311, and the second inner insulation unit 32 are fixedly connected in sequence; the outer peripheral wall of the second pipe 33 is fixedly connected to the second inner insulation unit 32; the thickness of the second adjacent forged insulation part 312 is greater than the thickness of the second far-forged insulation part 311.

[0054] In this embodiment, as Figure 2 As shown, the second outer insulation unit 31 may include a second far-forging insulation portion 311 and a second adjacent-forging insulation portion 312. The second far-forging insulation portion 311 may be disposed on the outer wall of the third segment 13 away from the second segment 12. The second adjacent-forging insulation portion 312 may be disposed on the outer wall of the third segment 13 close to the second segment 12. The second adjacent-forging insulation portion 312, the second far-forging insulation portion 311, and the second inner insulation unit 32 may be fixedly connected in sequence. The outer peripheral wall of the second pipe 33 is fixedly connected to the second inner insulation unit 32, so that the outer peripheral wall of the second pipe 33 can press the second inner insulation unit 32 towards the inner wall of the third segment 13, thereby ensuring the heat insulation effect of the second inner insulation unit 32 on the inner wall of the third segment 13 of the ring forging 01. Figure 3 As shown, the thickness T2 of the second adjacent forging insulation part 312 can be greater than the thickness T1 of the second distant forging insulation part 311, thereby ensuring the heat insulation effect of the second outer insulation unit 31 on the side of the outer peripheral wall of the third section 13 close to the second section 12.

[0055] In some embodiments, such as Figure 2 As shown, the thickness of the first forging insulation part 211 is 30mm-40mm; the thickness of the second forging insulation part 311 is 30mm-40mm.

[0056] In this embodiment, as Figure 2 , Figure 3 As shown, the thickness T6 of the first forged insulation part 211 can be 30mm-40mm to ensure the heat insulation effect of the first forged insulation part 211. The thickness T1 of the second forged insulation part 311 can be 30mm-40mm to ensure the heat insulation effect of the second forged insulation part 311.

[0057] In some embodiments, the method for locally heating the ring forging 01 further includes:

[0058] Step S16: Based on the set temperature value of the ring forging 01 in the heating furnace and the set time, the ring forging 01 is taken out of the heating furnace; wherein, the set temperature is 950℃-1050℃.

[0059] In this embodiment, the method for locally heating the ring forging 01 may further include step S16. In step S16, when the ring forging 01 is heated in a heating furnace, if the temperature inside the heating furnace reaches a set temperature value and is maintained for a set time, the ring forging 01 can be removed from the heating furnace, completing the local heating of the second segment 12 of the ring forging 01. The set temperature can be 950℃-1050℃.

[0060] In other embodiments, when the ring forging 01 is heated in the heating furnace, the temperature changes of the first segment 11, the second segment 12, and the third segment 13 in the ring forging 01 can be monitored respectively. This allows the detection of the heat insulation effect of the first heat insulation component 02 on the first segment 11 and the heat insulation effect of the second heat insulation component 03 on the third segment 13. It also allows the detection of the local heating of the second segment 12 by the heating furnace. If the temperature of the second segment 12 reaches the set temperature value and is maintained for the set time, the ring forging 01 can be removed from the heating furnace, thus completing the local heating of the second segment 12 of the ring forging 01.

[0061] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this disclosure.

Claims

1. A method for local heating of a ring forging, characterized in that, The method for local heating of the ring forging includes: Step S11: Obtain the position of the second segment of the ring forging; wherein, the second segment includes the deformed part of the ring forging that has been locally heated; Step S12: Based on the obtained second segment being located at the middle position along the length direction of the ring forging, the positions of the first segment and the third segment are obtained; wherein, the first segment, the second segment, and the third segment are fixedly connected in sequence; the length of the first segment is greater than or equal to the length of the third segment; Step S13: Based on the obtained position of the first segment, the first insulation component is fitted onto the first segment; wherein, the first insulation component includes a first outer insulation unit, a first inner insulation unit, and a first pipe; the first outer insulation unit is fitted onto the outer periphery and end side of the first segment, the first inner insulation unit is fitted onto the inner periphery of the first segment, and the first pipe is disposed in the internal hollow area of ​​the first segment. Step S14: Based on the obtained position of the third segment, a second insulation component is fitted onto the third segment; wherein, the second insulation component includes a second outer insulation unit, a second inner insulation unit, and a second pipe; the second outer insulation unit is fitted onto the outer periphery and end side of the third segment, the second inner insulation unit is fitted onto the inner periphery of the third segment, and the second pipe is disposed in the internal hollow region of the third segment; the cross-sectional area of ​​the first pipe is larger than the cross-sectional area of ​​the second pipe; the first insulation component and the second insulation component are spaced apart; the central axis of the first pipe coincides with the central axis of the ring forging; the central axis of the second pipe is spaced apart from the central axis of the ring forging. Step S15: The ring forging with the first insulation component and the second insulation component is placed in a heating furnace for heating; wherein the first insulation component is located above the second insulation component.

2. The method for local heating of a ring forging according to claim 1, characterized in that, The second segment also includes a connecting part for local heating of the ring forging; one end of the deformed part is fixedly connected to the first segment through one of the connecting parts, and the other end is fixedly connected to the first segment through another connecting part.

3. The method for local heating of a ring forging according to claim 2, characterized in that, H0*0.1≤H4≤H0*0.5, where H4 is the length of the connecting part and H0 is the length of the deformable part.

4. The method for local heating of a ring forging according to claim 1, characterized in that, The minimum wall thickness of the first inner insulation unit is greater than or equal to the maximum wall thickness of the first outer insulation unit; ΦA1 / 3≤ΦB≤ΦA1 / 2, where ΦA is the minimum inner diameter of the first segment and ΦB is the inner diameter of the first pipe.

5. The method for local heating of a ring forging according to claim 1, characterized in that, The minimum wall thickness of the second inner insulation unit is greater than or equal to the maximum wall thickness of the second outer insulation unit.

6. A method for local heating of a ring forging according to any one of claims 4 or 5, characterized in that, The first external insulation unit includes a first far-forged insulation part and a first adjacent forged insulation part; the first adjacent forged insulation part, the first far-forged insulation part, and the first internal insulation unit are fixedly connected in sequence; the outer peripheral wall of the first pipe is fixedly connected to the first internal insulation unit; the thickness of the first adjacent forged insulation part is greater than the thickness of the first far-forged insulation part.

7. The method for local heating of a ring forging according to claim 6, characterized in that, The second external insulation unit includes a second far-forged insulation part and a second adjacent forged insulation part; the second adjacent forged insulation part, the second far-forged insulation part, and the second internal insulation unit are fixedly connected in sequence; the outer peripheral wall of the second pipe is fixedly connected to the second internal insulation unit; the thickness of the second adjacent forged insulation part is greater than the thickness of the second far-forged insulation part.

8. The method for local heating of a ring forging according to claim 7, characterized in that, The thickness of the first forging insulation part is 30mm-40mm; the thickness of the second forging insulation part is 30mm-40mm.

9. A method for local heating of a ring forging according to claim 1, characterized in that, The method for local heating of the ring forging also includes: Step S16: Based on the set temperature value of the ring forging in the heating furnace and the set time, the ring forging is taken out of the heating furnace; wherein, the set temperature is 950℃-1050℃.

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