A processing method of a special-shaped water channel flange

Abstract

The application discloses a processing method of a flange piece with a special-shaped water channel, and comprises the following steps: S1, a base and a water channel cover plate are respectively processed, and the base and the water channel cover plate form the flange piece; S2, a water channel groove is processed on the base, groove side walls are arranged on the two sides of the water channel groove, and a supporting bottom is processed on the groove side walls; S3, the width of the water channel cover plate is set to be greater than the width of the water channel groove, the water channel cover plate is clamped and connected with the base, the water channel cover plate is overlapped on the supporting bottom, and a welding seam is formed between the side edge of the water channel cover plate and the groove side wall above the supporting bottom; and S4, the welding seam is welded, and finally, the welding groove penetrates through the water channel cover plate to the supporting bottom. The flange is arranged in a split structure, thereby avoiding the problem of inconvenient hole opening, and meanwhile, the position of the welding seam and the supporting bottom is arranged, so that on the basis of ensuring the stable connection of the water channel cover plate and the base, the situation that slag enters the water channel groove and causes pollution in the welding process is avoided.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a processing method for a flange with an irregular waterway. Background Technology

[0002] For example, publication number "CN219082518U" discloses a "flange structure and furnace tube," including an outer flange and an inner flange. The outer flange includes a flange body with a water channel. A water-sealing component is provided on the flange body, and the water-sealing component is connected to the flange body to seal the water channel. The flange structure also has an anti-corrosion component, which includes a first anti-corrosion component used to at least shield the connection between the water-sealing component and the flange body. However, in practical applications, if irregularly shaped water channels are set inside the flange during the production process, it will increase the processing difficulty and make drilling inconvenient. If welding is used, the internal water channel may be contaminated during the welding process. Summary of the Invention

[0003] In view of the problems mentioned in the background art, such as inconvenience in drilling holes and waterway contamination from welding, the present invention provides a processing method for irregularly shaped waterway flanges. The flange is designed as a split structure, thereby avoiding the problem of inconvenience in drilling holes. At the same time, by setting the position of the weld seam and the base, the connection between the waterway cover and the base can be made stable, while avoiding the situation of slag entering the waterway and causing contamination during the welding process.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A method for processing irregularly shaped waterway flanges includes the following steps: S1. Machin the base and waterway cover plate separately. The base and waterway cover plate together form a flange. S2. A water channel is machined on the base, and side walls are provided on both sides of the water channel. A support base is machined on the side walls of the water channel. S3. The width of the waterway cover is set to be greater than the width of the waterway channel. The waterway cover is snapped into the base and overlapped on the support. It is located above the support, between the side of the waterway cover and the side wall of the channel, and forms a weld. S4. Weld the seam, and the final weld bead extends through the waterway cover to the bottom.

[0006] Semiconductor furnace flanges are critical connecting components specifically designed for semiconductor manufacturing equipment (such as diffusion furnaces, chemical vapor deposition (CVD) furnaces, epitaxial furnaces, etc.). They are used to seal high-temperature reaction chambers, connect gas or water passages, and ensure stable operation of the equipment in ultra-high vacuum, high temperature, and corrosive gas environments. Their design and manufacturing must meet the stringent requirements of the semiconductor industry for cleanliness, corrosion resistance, thermal stability, and sealing. To meet these requirements, the base material of the parts is made of high-purity materials to reduce the risk of contamination, such as 316L VIM-VAR stainless steel (extremely low impurity content), Inconel 625 (resistant to high-temperature corrosion), or Hastelloy C276 (resistant to strong acid media). The flange in this application is not a one-piece structure. By dividing the flange into a base and a water channel cover, it is easier to process the water channel groove on the base, and then connect the water channel cover through the water channel groove to form a water channel, thus avoiding the difficulty of directly drilling holes in irregularly shaped water channels. At the same time, the width of the water channel cover is larger than the width of the water channel groove, and a support is provided on the side walls of the water channel groove on both sides. The size of the support plus the water channel groove is slightly larger than the width of the water channel cover. This allows the two sides of the water channel cover to overlap the support during installation, and the water channel cover to completely cover the top of the water channel groove. The vertical direction and weld between the water channel cover and the side walls of the two sides of the groove are not aligned with the water channel groove. The water channel is connected by a support, creating an angle. During welding, the welding area extends vertically along the weld, so the slag produced during welding is also transferred along the weld. Due to the angle of the support, the slag does not directly enter the water channel. At the same time, during welding, the weld bead penetrates the water channel cover and is welded to the support. Since the starting point of the weld bead is located on the weld, although the weld bead will weld to the support, it will only weld to the side of the support closest to the weld, and not the side of the support closest to the water channel. This avoids the situation where welding slag splashes into the water channel. Furthermore, the weld bead penetrating to the support further improves the connection reliability between the water channel cover and the base, and also forms a local connection area on the support.

[0007] Preferably, segmented welding is used in step S4, including: Local welding: Welding is performed on local weld seams to initially position the base and waterway cover. Sealing: Continuous welding is performed on the weld seam to seal the gap between the waterway cover and the base; Formal welding: Full penetration welding, with the weld bead extending to the base.

[0008] In this application, step S4 is not a one-time complete welding process, but a step-by-step welding method is adopted. First, partial welding is used to initially position the waterway cover and the base, thereby avoiding relative displacement of the waterway cover relative to the base during subsequent welding. Then, sealing welding is performed, which is a continuous welding along the weld seam, welding all weld seam areas, thereby welding all connection areas between the waterway cover and the base, thus achieving a preliminary sealing effect. Finally, the final welding is performed to fix the waterway cover and the base together, ensuring the stability of the connection.

[0009] Preferably, during localized welding, the penetration depth is controlled between 10% and 20% of the thickness of the waterway cover plate. Controlling the penetration depth to 10%-20% during localized welding improves welding efficiency while ensuring a certain level of connection.

[0010] Preferably, during the sealing welding process, the penetration depth is controlled between 35% and 65% of the thickness of the waterway cover plate, covering the local welding area. Controlling the penetration depth between 35% and 65% during sealing welding ensures both sealing effectiveness and improved welding efficiency, further enhancing the connection stability between the waterway cover plate and the base.

[0011] Preferably, in step S4, a vacuum is drawn before welding.

[0012] Preferably, in step S4, the cross-sectional shape of the weld bead is controlled to be conical, with the apex of the cone located in the angled region formed between the base and the weld. Controlling the weld bead shape to a conical structure, vacuum electron beam welding is preferably used in this application, which can form a conical weld bead cross-section and improve welding efficiency. Other welding methods can also be used as long as a conical weld bead can be formed. The apex of the conical weld bead is located in the angled region between the weld and the base, thus enabling the connection between the base, the tank sidewall, and the waterway cover. Furthermore, because the entire weld bead is conical (pin-shaped), it exhibits a structure that is wider at the top and narrower at the bottom, ensuring a stable connection between the waterway cover and the tank sidewall. It also reduces the width of the weld bead on the base, preventing slag from being discharged from the base area towards the waterway tank side during welding, thus improving welding quality and cleanliness.

[0013] Preferably, several disconnection adjustment plates are provided in the thin-walled area of ​​the sidewall of the channel. The disconnection adjustment plates and the base are integrally formed. An installation groove is provided between adjacent disconnection adjustment plates. The opening of the installation groove is flush with the bottom of the support. A rear mounting plate is connected in the installation groove. When the waterway cover is connected to the base, the size and deformation of the disconnection adjustment plates and / or the rear mounting plate can be adjusted separately. Because the entire waterway has an irregular shape, there are areas with thinner sidewalls. Since the waterway is continuous, the machining requirements for the base and waterway cover are high. While machining errors can be corrected by grinding in thicker areas, correction of thinner sidewalls can directly cause overall deformation. Because the sidewalls are continuous, this deformation will directly affect other areas, resulting in significant correction costs. Therefore, this application incorporates several discontinuity adjustment plates on the thin-walled areas. These plates are spaced apart and not continuous. Thus, if a local machining error causes the waterway cover to fail to engage, this discontinuity adjustment plate can be used to adjust the waterway cover. When connecting the base, the area can be locally adjusted by adjusting individual disconnection adjustment pieces. Deformation only occurs within the local area of ​​the disconnection adjustment piece without affecting the rest of the area, thus avoiding over-adjustment. At the same time, mounting slots are set between each disconnection adjustment piece, with the side arm of the mounting slot flush with the side arm of the disconnection adjustment piece. That is, there is no gap between the disconnection adjustment piece and the adjustment slot. The mounting piece can be installed in the mounting slot. Since the mounting slot and the disconnection adjustment piece are continuous, the installed mounting piece can fit the disconnection adjustment piece to the maximum extent. Even if there are gaps, they can be connected by subsequent welding, thereby improving the flexibility of adjustment. During the installation process, the disconnection adjustment piece and the mounting piece can be adjusted individually.

[0014] Preferably, in step S4, local spot welding is first performed on the area where the rear-mounted piece meets the waterway cover plate and the disconnected adjustment piece, and then local line welding is performed along the contour of the rear-mounted piece. During the local line welding process, the weld extends to the bottom of the mounting groove. By adjusting and correcting the rear-mounted plate and the disconnection adjustment plate, a stable connection can be achieved between the waterway cover and the base. Subsequently, local spot welding is performed at the intersection of the rear-mounted plate, the waterway cover, and the disconnection adjustment plate to simultaneously limit and fix the three components. Since the disconnection adjustment plate is integrally formed on the base, the rear-mounted plate and the waterway cover can initially achieve a positioning effect after the local electric welding is completed. Then, local line welding is performed on the rear-mounted plate area. During this welding process, the weld extends to the bottom of the mounting groove, allowing the rear-mounted plate to simultaneously connect the disconnection adjustment plate, the waterway cover, and the mounting groove, thus providing stable fixation and limitation for the rear-mounted plate. In this process, the separate bases are welded into a single structure, further improving the connection between the waterway cover and the rear-mounted plate. Because of the installation groove and the bottom support, the welding slag will fall along the rear-mounted plate to the bottom of the installation groove during the welding process and will not enter the waterway groove.

[0015] Preferably, a through hole is machined in the waterway cover plate, which connects to the waterway channel. The through hole in the waterway cover plate allows fluid to enter and exit after installation, and during the welding process, it allows the gas that expands due to welding heating inside the waterway to escape through the through hole, preventing deformation of the waterway caused by compression.

[0016] Preferably, the angle between the base and the weld is a right angle or an acute angle. Setting the angle between the base and the weld to a right angle or an acute angle prevents weld slag from being discharged into the water channel through the gap between the base and the water channel cover. At the same time, the gap between the water channel cover and the base can be minimized by the weight of the water channel cover itself, thereby improving the sealing performance after welding.

[0017] The beneficial effects of this invention are as follows: (1) It can improve the overall quality after welding and prevent welding slag from entering the water channel during the welding process, ensuring the cleanliness inside. At the same time, it can improve the stability of the welding process by supporting the bottom and improve the connection stability between the base and the water channel cover after the welding is completed. (2) Distributed welding can ensure welding quality, improve welding stability, avoid relative displacement during welding, and ensure sealing after forming; (3) By setting up disconnection adjustment plates, mounting slots, and post-installation plates, the offset area can be better adjusted without interfering with other parts, ensuring the independence of the adjustment process. In addition, in conjunction with the subsequent welding steps, the initial positioning and final stable connection between the components can be guaranteed, improving the reliability and sealing of the connection. Attached Figure Description

[0018] Figure 1 This is an exploded view of the present invention.

[0019] Figure 2 This is a partial cross-sectional explosion view of the present invention.

[0020] Figure 3 This is a partial cross-sectional view of the present invention.

[0021] Figure 4 This is a schematic diagram of the weld structure in this invention.

[0022] Figure 5 This is a partial isometric view of Example 2.

[0023] In the picture: 1. Base, 11. Water channel, 12. Channel sidewall, 13. Support bottom, 14. Weld, 15. Disconnection adjustment plate, 16. Mounting groove, 17. Rear mounting plate; 2. Water channel cover plate, 21. Through hole. 3 weld beads. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: like Figure 1 , 2 As shown in Figures 3 and 4, a method for processing a flange with an irregular shape includes the following steps: S1. Machining base 1 and waterway cover 2 respectively, base 1 and waterway cover 2 form a flange; S2. A water channel 11 is machined on the base 1. The water channel 11 has side walls 12 on both sides. A support 13 is machined on the side walls 12. S3. The width of the waterway cover plate 2 is set to be greater than the width of the waterway trough 11. The waterway cover plate 2 is snapped into the base 1. The waterway cover plate 2 overlaps on the support 13 and is located above the support 13 between the side of the waterway cover plate 2 and the side wall 12 of the trough, forming a weld 14. S4. The weld 14 is welded, and the final weld 3 penetrates through the waterway cover plate 2 to the support 13.

[0026] Semiconductor furnace flanges are critical connecting components specifically designed for semiconductor manufacturing equipment (such as diffusion furnaces, chemical vapor deposition (CVD) furnaces, epitaxial furnaces, etc.). They are used to seal high-temperature reaction chambers, connect gas or water passages, and ensure stable operation of the equipment in ultra-high vacuum, high temperature, and corrosive gas environments. Their design and manufacturing must meet the stringent requirements of the semiconductor industry for cleanliness, corrosion resistance, thermal stability, and sealing. To meet these requirements, the base material of the parts is made of high-purity materials to reduce the risk of contamination, such as 316L VIM-VAR stainless steel (extremely low impurity content), Inconel 625 (resistant to high-temperature corrosion), or Hastelloy C276 (resistant to strong acid media). In this embodiment, the flange is not a one-piece structure. It is divided into a base 1 and a water channel cover 2, which facilitates the machining of a water channel groove 11 on the base 1. The water channel groove 11 is then connected to the water channel cover 2 to form a water channel, avoiding the difficulty of directly drilling holes in irregularly shaped water channels. Simultaneously, the width of the water channel cover 2 is greater than the width of the water channel groove 11, and a support 13 is provided on the side walls 12 of the water channel groove 11 on both sides. The combined size of the support 13 and the water channel groove 11 is slightly larger than the width of the water channel cover 2. This allows the two sides of the water channel cover 2 to overlap the support 13 during installation, completely covering the top of the water channel groove 11. The vertical direction formed between the water channel cover 2 and the side walls 12, and the weld 14, are not aligned with the water channel groove 11. A bend is formed between the channel 11 via the base 13. During welding, the welding area extends vertically along the weld 14, and the slag produced during welding is also transferred along the weld 14. Due to the bend of the base 13, the slag will not directly enter the channel 11. At the same time, during welding, the weld bead 3 penetrates the channel cover 2 and is welded to the base 13. Since the starting point of the weld bead 3 is located on the weld 14, although the weld bead 3 will be welded to the base 13, it will only be welded to the side of the base 13 closest to the weld 14, and will not be welded to the side of the base 13 closest to the channel 11. This avoids the situation where welding slag splashes into the channel 11. Furthermore, by extending the weld bead 3 to the base 13, the connection reliability between the channel cover 2 and the base 1 can be further improved, and a local connection area is also formed on the base 13.

[0027] Segmented welding is employed in step S4, including: Partial welding: Weld the partial weld 14 to perform preliminary positioning of the base 1 and the waterway cover 2; Sealing: Weld continuously to weld seam 14 to seal the gap between waterway cover plate 2 and base 1; Formal welding: Full penetration welding, with the weld extending to 13 points on the bottom.

[0028] In this embodiment, step S4 is not a one-time complete welding, but a step-by-step welding method is adopted. First, partial welding is used to initially position the waterway cover plate 2 and the base 1, so as to avoid the waterway cover plate 2 relative to the base 1 displacement during the subsequent welding process. Then, sealing welding is performed. Sealing welding is performed continuously along the weld seam 14, welding all the weld seam 14 areas, thereby welding all the connection areas between the waterway cover plate 2 and the base 1, thus achieving a preliminary sealing effect. Finally, the final welding is performed to fix the waterway cover plate 2 and the base 1 to ensure the stability of the connection.

[0029] During localized welding, the penetration depth is controlled between 10% and 20% of the thickness of the waterway cover plate 2. Maintaining the penetration depth between 10% and 20% during localized welding improves welding efficiency while ensuring a certain level of connection.

[0030] During the sealing welding process, the penetration depth is controlled between 35% and 65% of the thickness of the waterway cover plate 2, and the local welding area is covered. By controlling the penetration depth between 35% and 65% during sealing welding, the welding efficiency can be improved while ensuring the sealing effect, and the connection stability between the waterway cover plate 2 and the base 1 can be further improved.

[0031] In step S4, a vacuum is drawn, and then welding is performed.

[0032] like Figure 4 As shown, in step S4, the cross-sectional shape of the weld bead 3 is controlled to be conical, with the apex of the cone located in the angled area formed between the base 13 and the weld 14. The shape of the weld bead 3 is controlled to be conical; therefore, vacuum electron beam welding is preferably used in this embodiment, which can form a conical weld bead 3 cross-section and improve welding efficiency. Other welding methods can also be used as long as they can form a conical weld bead 3. The apex of the conical weld bead 3 is located in the angled area between the weld 14 and the base 13, thus enabling the connection between the base 13, the tank sidewall 12, and the waterway cover 2. Furthermore, since the entire weld bead 3 is conical (pin-shaped), it exhibits a structure that is wider at the top and narrower at the bottom, ensuring a stable connection between the waterway cover 2 and the tank sidewall 12. It also reduces the width of the weld bead 3 on the base 13, preventing slag from being discharged from the base 13 area towards the waterway tank 11 during welding, thus improving welding quality and cleanliness.

[0033] like Figure 1As shown, a through hole 21 is machined on the waterway cover plate 2, and the through hole 21 connects to the waterway groove 11. The through hole 21 provided on the waterway cover plate 2 can be used for fluid to enter and exit after the later installation is completed. At the same time, during the welding process, the gas that expands due to welding heating inside the waterway can be discharged through the through hole 21, avoiding deformation caused by squeezing the waterway.

[0034] like Figure 2 , 3 As shown in Figure 4, the angle between the base 13 and the weld 14 is a right angle or an acute angle. Setting the angle between the base 13 and the weld 14 to a right angle or an acute angle prevents welding slag from being discharged into the water channel 11 through the gap between the base 13 and the water channel cover 2. At the same time, the gap between the water channel cover 2 and the base 13 can be minimized by relying on the weight of the water channel cover 2 itself, thereby improving the sealing performance after welding.

[0035] In this embodiment, the above-described operation steps can achieve the following technical effects: improve the overall quality after welding, prevent welding slag from entering the water channel during welding, ensure internal cleanliness, improve stability during welding by supporting the bottom, and improve the connection stability between the base and the water channel cover after welding; distributed welding can ensure welding quality, improve welding stability, prevent relative displacement during welding, and ensure sealing after forming.

[0036] Example 2: like Figure 5 As shown, a method for processing a non-circular waterway flange includes the following steps: S1. Machining base 1 and waterway cover 2 respectively, base 1 and waterway cover 2 form a flange; S2. A water channel 11 is machined on the base 1. The water channel 11 has side walls 12 on both sides. A support 13 is machined on the side walls 12. S3. The width of the waterway cover plate 2 is set to be greater than the width of the waterway trough 11. The waterway cover plate 2 is snapped into the base 1. The waterway cover plate 2 overlaps the support 13 and is located above the support 13 between the side of the waterway cover plate 2 and the side wall 12 of the trough, forming a weld 14. Several disconnection adjustment pieces 15 are set in the thin-walled area of ​​the side wall 12 of the trough. The disconnection adjustment pieces 15 and the base 1 are integrally formed. The mounting groove 16 is processed between adjacent disconnection adjustment pieces 15. The groove opening of the mounting groove 16 is flush with the support 13. The mounting groove 16 is connected to the rear mounting piece 17. When the base 1 is connected to the waterway cover plate 2, the size and deformation of the disconnection adjustment piece 15 and / or the rear mounting piece 17 are adjusted separately. S4. Weld the weld 14, and the final weld bead 3 penetrates the waterway cover 2 to the bottom support 13.

[0037] In this embodiment, the flange is not a one-piece structure. It is divided into a base 1 and a water channel cover 2, which facilitates the machining of a water channel groove 11 on the base 1. The water channel groove 11 is then connected to the water channel cover 2 to form a water channel, avoiding the difficulty of directly drilling holes in irregularly shaped water channels. Simultaneously, the width of the water channel cover 2 is greater than the width of the water channel groove 11, and a support 13 is provided on the side walls 12 of the water channel groove 11 on both sides. The combined size of the support 13 and the water channel groove 11 is slightly larger than the width of the water channel cover 2. This allows the two sides of the water channel cover 2 to overlap the support 13 during installation, completely covering the top of the water channel groove 11. The vertical direction formed between the water channel cover 2 and the side walls 12, and the weld 14, are not aligned with the water channel groove 11. A bend is formed between the channel 11 via the base 13. During welding, the welding area extends vertically along the weld 14, and the slag produced during welding is also transferred along the weld 14. Due to the bend of the base 13, the slag will not directly enter the channel 11. At the same time, during welding, the weld bead 3 penetrates the channel cover 2 and is welded to the base 13. Since the starting point of the weld bead 3 is located on the weld 14, although the weld bead 3 will be welded to the base 13, it will only be welded to the side of the base 13 closest to the weld 14, and will not be welded to the side of the base 13 closest to the channel 11. This avoids the situation where welding slag splashes into the channel 11. Furthermore, by extending the weld bead 3 to the base 13, the connection reliability between the channel cover 2 and the base 1 can be further improved, and a local connection area is also formed on the base 13.Because the entire waterway has an irregular shape, there will be areas with thinner sidewalls 12. Since the entire waterway 11 is continuous, the machining requirements for the base 1 and the waterway cover 2 are high. If there are machining errors, they can be corrected by subsequent grinding in areas with thicker walls. However, when correcting the thinner sidewalls 12, the correction process may directly cause overall deformation. Since the entire sidewall 12 is continuous, the deformation will directly affect the remaining areas, resulting in significant correction costs. Therefore, in this embodiment, several discontinuity adjustment pieces 15 are provided on the thin-walled areas. There are gaps between the discontinuity adjustment pieces 15, and the pieces are not continuous. Therefore, if there are local machining errors that prevent the waterway cover 2 from engaging with the base 1, the discontinuity adjustment pieces can be adjusted. During installation, the area can be locally adjusted by adjusting a single disconnection adjustment piece 15, causing deformation only within that specific area without affecting other areas, thus avoiding over-adjustment. Simultaneously, mounting grooves 16 are provided between each disconnection adjustment piece 15, with the side arm of the mounting groove 16 flush with the side arm of the disconnection adjustment piece 15, meaning there is no gap between the disconnection adjustment piece 15 and the adjustment groove. A rear mounting piece 17 can be installed within the mounting groove 16. Since the mounting groove 16 and the disconnection adjustment piece 15 are continuous, the installed rear mounting piece 17 can fit snugly against the disconnection adjustment piece 15. Even if gaps exist, they can be re-welded later, improving adjustment flexibility and allowing for individual adjustment of the disconnection adjustment piece 15 and the rear mounting piece 17 during installation.

[0038] Segmented welding is employed in step S4, including: Local welding: Weld the local weld 14 to perform the initial positioning of the base 1 and the waterway cover 2. Perform local spot welding on the area where the rear mounting piece 17 intersects the waterway cover 2 and the disconnected adjustment piece 15. Then perform local line welding along the outline of the rear mounting piece 17. During the local line welding process, the weld 3 extends to the bottom of the mounting groove 16. Sealing: Weld continuously to weld seam 14 to seal the gap between waterway cover plate 2 and base 1; Formal welding: Full penetration welding, with the weld extending to 13 points on the bottom.

[0039] In this embodiment, step S4 is not a one-time complete welding, but a step-by-step welding method is adopted. First, partial welding is used to initially position the waterway cover plate 2 and the base 1, so as to avoid the waterway cover plate 2 relative to the base 1 displacement during the subsequent welding process. Then, sealing welding is performed. Sealing welding is performed continuously along the weld seam 14, welding all the weld seam 14 areas, thereby welding all the connection areas between the waterway cover plate 2 and the base 1, thus achieving a preliminary sealing effect. Finally, the final welding is performed to fix the waterway cover plate 2 and the base 1 to ensure the stability of the connection. In step S4, by adjusting and correcting the rear mounting piece 17 and the disconnection adjustment piece 15, a stable connection can be achieved between the waterway cover plate 2 and the base 1. Then, local spot welding is performed at the intersection of the rear mounting piece 17, the waterway cover plate 2, and the disconnection adjustment piece 15, thereby simultaneously limiting and fixing the three components. Since the disconnection adjustment piece 15 is integrally formed on the base 1, after the local electric welding is completed, the rear mounting piece 17 and the waterway cover plate 2 can initially achieve a positioning effect. Subsequently, local line welding is performed on the area of ​​the rear mounting piece 17. During this welding process, the weld bead 3 extends... Extending to the bottom of the mounting groove 16, the rear mounting piece 17 can simultaneously connect the disconnection adjustment piece 15, the water channel cover 2, and the mounting groove 16 during the local wire welding process, thereby stably fixing and limiting the rear mounting piece 17. In this process, the separated base 1 is welded into an integral structure, and the connection between the water channel cover 2 and the rear mounting piece 17 is further improved. Since the mounting groove 16 and the bottom support 13 are provided, the welding slag will fall along the rear mounting piece 17 to the bottom of the mounting groove 16 during the welding process and will not enter the water channel 11.

[0040] During localized welding, the penetration depth is controlled between 10% and 20% of the thickness of the waterway cover plate 2. Maintaining the penetration depth between 10% and 20% during localized welding improves welding efficiency while ensuring a certain level of connection.

[0041] During the sealing welding process, the penetration depth is controlled between 35% and 65% of the thickness of the waterway cover plate 2, and the local welding area is covered. By controlling the penetration depth between 35% and 65% during sealing welding, the welding efficiency can be improved while ensuring the sealing effect, and the connection stability between the waterway cover plate 2 and the base 1 can be further improved.

[0042] In step S4, a vacuum is drawn, and then welding is performed.

[0043] like Figure 4As shown, in step S4, the cross-sectional shape of the weld bead 3 is controlled to be conical, with the apex of the cone located in the angled area formed between the base 13 and the weld 14. The shape of the weld bead 3 is controlled to be conical; therefore, vacuum electron beam welding is preferably used in this embodiment, which can form a conical weld bead 3 cross-section and improve welding efficiency. Other welding methods can also be used as long as they can form a conical weld bead 3. The apex of the conical weld bead 3 is located in the angled area between the weld 14 and the base 13, thus enabling the connection between the base 13, the tank sidewall 12, and the waterway cover 2. Furthermore, since the entire weld bead 3 is conical (pin-shaped), it exhibits a structure that is wider at the top and narrower at the bottom, ensuring a stable connection between the waterway cover 2 and the tank sidewall 12. It also reduces the width of the weld bead 3 on the base 13, preventing slag from being discharged from the base 13 area towards the waterway tank 11 during welding, thus improving welding quality and cleanliness.

[0044] like Figure 1 As shown, a through hole 21 is machined on the waterway cover plate 2, and the through hole 21 connects to the waterway groove 11. The through hole 21 provided on the waterway cover plate 2 can be used for fluid to enter and exit after the later installation is completed. At the same time, during the welding process, the gas that expands due to welding heating inside the waterway can be discharged through the through hole 21, avoiding deformation caused by squeezing the waterway.

[0045] like Figure 2 , 3 As shown in Figure 4, the angle between the base 13 and the weld 14 is a right angle or an acute angle. Setting the angle between the base 13 and the weld 14 to a right angle or an acute angle prevents welding slag from being discharged into the water channel 11 through the gap between the base 13 and the water channel cover 2. At the same time, the gap between the water channel cover 2 and the base 13 can be minimized by relying on the weight of the water channel cover 2 itself, thereby improving the sealing performance after welding.

[0046] In this embodiment, the above-described operational steps achieve the following technical effects: It improves the overall quality after welding, prevents welding slag from entering the water channel during welding, ensuring internal cleanliness. Simultaneously, the bottom support enhances stability during welding and improves the connection stability between the base and the water channel cover after welding. Distributed welding ensures welding quality and stability, preventing relative displacement during welding and guaranteeing sealing after forming. By setting up disconnection adjustment plates, mounting slots, and post-installation plates, it allows for better adjustment of offset areas without interfering with other parts, ensuring the independence of the adjustment process. Furthermore, in conjunction with subsequent welding steps, it ensures initial positioning and final stable connection between components, improving connection reliability and sealing.

Claims

1. A method for processing irregularly shaped waterway flanges, characterized in that, It includes the following steps: S1. Machin the base and waterway cover plate separately. The base and waterway cover plate together form a flange. S2. A water channel is machined on the base, and side walls are provided on both sides of the water channel. A support base is machined on the side walls of the water channel. S3. The width of the waterway cover is set to be greater than the width of the waterway channel. The waterway cover is snapped into the base and overlapped on the support. It is located above the support, between the side of the waterway cover and the side wall of the channel, and forms a weld. S4. Weld the seam, and the final weld bead extends through the waterway cover to the bottom of the support. Set several break-connection adjustment plates in the thin-walled area of ​​the side wall of the tank. The break-connection adjustment plates and the base are integrally formed. Set the installation groove between adjacent break-connection adjustment plates. The groove opening of the installation groove is flush with the bottom of the support. The installation groove is connected to the rear mounting plate. When the base is connected to the waterway cover, adjust the size and deformation of the break-connection adjustment plate and / or the rear mounting plate separately. First, perform local spot welding on the area where the rear mounting plate meets the waterway cover and the break-connection adjustment plate. Then, perform local line welding along the outline of the rear mounting plate. During the local line welding process, the weld bead extends to the bottom of the installation groove.

2. The processing method for a non-circular waterway flange as described in claim 1, characterized in that, Segmented welding is employed in step S4, including: Local welding: Welding is performed on local weld seams to initially position the base and waterway cover. Sealing: Continuous welding is performed on the weld seam to seal the gap between the waterway cover and the base; Formal welding: Full penetration welding, with the weld bead extending to the base.

3. A processing method for a non-circular waterway flange as described in claim 2, characterized in that, During local welding, the penetration depth is controlled to be between 10% and 20% of the thickness of the waterway cover plate.

4. A processing method for a non-circular waterway flange as described in claim 2, characterized in that, During the sealing process, the penetration depth is controlled between 35% and 65% of the thickness of the waterway cover plate, and the local welding area is covered.

5. A processing method for a non-circular waterway flange as described in claim 1, characterized in that, In step S4, a vacuum is drawn, and then welding is performed.

6. A processing method for a non-circular waterway flange as described in claim 1, characterized in that, In step S4, the cross-sectional shape of the weld bead is controlled to be conical, with the apex of the cone located in the angled area formed between the base and the weld.

7. A processing method for a non-circular waterway flange according to any one of claims 1-6, characterized in that, A through hole is machined into the waterway cover plate, and the through hole connects to the waterway channel.

8. A processing method for a non-circular waterway flange according to any one of claims 1-6, characterized in that, The angle between the base and the weld is a right angle or an acute angle.

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