A method for manufacturing a high-temperature-resistant long-life sampling cone

Abstract

This invention discloses a method for manufacturing a high-temperature resistant, long-life sampling cone, comprising: Step 1, preparing metal plates: preparing two high-temperature resistant and corrosion-resistant metal plates and one high-thermal-conductivity metal plate; Step 2, processing the upper high-temperature resistant and corrosion-resistant metal plate into an assembly structure, processing the high-thermal-conductivity metal plate into an assembly structure, and processing the lower high-temperature resistant and corrosion-resistant metal plate into an assembly structure; Step 3, assembling and welding: assembling the upper high-temperature resistant and corrosion-resistant metal plate, the high-thermal-conductivity metal plate, and the lower high-temperature resistant and corrosion-resistant metal plate with the assembly structure together; using electron beam welding technology to weld and diffuse weld the splicing interface of the upper and lower high-temperature resistant and corrosion-resistant metal plates to form a first structural component; Step 4, structural component forming: using plastic forming to form the first structural component into a cone shape. This invention enhances the thermal conductivity of the sampling cone, improves its high-temperature resistance, and extends its service life.

Description

Technical Field

[0001] This invention belongs to the field of mass spectrometry technology, specifically a high-temperature resistant, long-life sampling cone for inductively coupled plasma mass spectrometry (ICP-MS). Background Technology

[0002] ICP-MS, short for Inductively Coupled Plasma Mass Spectrometry, consists of an ICP torch, an interface device, and a mass spectrometer. The interface cone is the main component of the interface device, typically composed of a sampling cone and a cutoff cone. The interface cone plays a crucial role in the transmission efficiency of the ion current, directly determining the instrument's detection limit and stability. The interface cone operates in harsh environments, including high temperatures (approximately 1000°C) and acidic / alkaline conditions; therefore, it must meet requirements for high-temperature resistance, corrosion resistance, and good thermal conductivity. Existing publications, such as patent WO2018163576A1, disclose a plasma cone for an inductively coupled plasma mass spectrometer, an inductively coupled plasma mass spectrometer, and a method for manufacturing the plasma cone for an inductively coupled plasma mass spectrometer. Various coating methods are used to deposit thin films of platinum, platinum group metals other than platinum, alloys, or their alloys onto the surface of the plasma cone. This invention can reduce impurity background without sacrificing sensitivity (ionic strength), further improving cone durability. For example, patent US5793039A discloses a mass spectrometer, a sampling cone assembly, a sampling cone, and a method for manufacturing the same. The cone is manufactured using compression molding, a method significantly easier than machining, thus reducing production costs. Patent CN2510862Y discloses an inductively coupled plasma mass spectrometry interface device, consisting of a sampling cone and a sampling cone. The sampling cone and the sampling cone are axially concentric, and the thickness of the cone apertures of both the sampling cone and the sampling cone is 0.2mm to 0.5mm, made of corrosion-resistant and high-temperature-resistant metal materials.

[0003] However, existing technologies for interface cones suffer from problems such as single product structure and materials, small bonding area between different materials, insufficient bonding, and poor high-temperature resistance; therefore, they are still prone to deformation. In addition, existing patents rarely involve the manufacturing process of interface cones. Interface cone components made of single materials or with simple structures by traditional molding or machining processes are difficult to use for a long time in harsh working environments with high temperature and acid and alkali corrosion. Summary of the Invention

[0004] To address the problems of easy deformation and short lifespan in the prior art, this invention provides a method for manufacturing a high-temperature resistant, long-life sampling cone. The technical solution includes:

[0005] Step 1: Prepare metal plates: Prepare two high-temperature and corrosion-resistant metal plates and one metal plate with high thermal conductivity.

[0006] Step 2: Fabricate the assembly structure for the upper high-temperature and corrosion-resistant metal sheet, the assembly structure for the high thermal conductivity metal sheet, and the assembly structure for the lower high-temperature and corrosion-resistant metal sheet.

[0007] The process of fabricating the assembly structure of the upper high-temperature and corrosion-resistant metal sheet includes: processing the upper plate contact step and the inner upper plate contact surface, and machining annular teeth on the surface of the upper plate contact surface.

[0008] The process of fabricating the assembly structure of the lower high-temperature and corrosion-resistant metal sheet includes: processing the lower plate contact step and the inner lower plate boss, and machining annular teeth on the surface of the lower plate contact step and the surface of the lower plate boss.

[0009] The process of fabricating an assembly structure from a high thermal conductivity metal sheet includes: processing the high thermal conductivity metal sheet into a ring with a rectangular cross-section; machining annular teeth on the upper and lower end faces of the high thermal conductivity metal sheet; assembling the annular teeth on the upper end face of the high thermal conductivity metal sheet and the lower plate boss; matching the annular teeth on the contact surface of the upper plate; and matching the annular teeth on the lower end face of the high thermal conductivity metal sheet with the annular teeth on the contact step of the lower plate.

[0010] Step 3, Assembly and Welding: Assemble the upper high-temperature and corrosion-resistant metal plate, the high thermal conductivity metal plate, and the lower high-temperature and corrosion-resistant metal plate with the assembly structure together; use electron beam welding technology to weld the splicing interface between the upper and lower high-temperature and corrosion-resistant metal plates, and then perform diffusion welding to produce the first structural component;

[0011] Step 4, Structural component forming: The first structural component is formed into a cone shape using plastic forming.

[0012] The upper plate contact step is further processed with an upper plate welding step, and the lower plate contact step is further processed with a lower plate welding step.

[0013] The steps at the upper plate welding point and the steps at the lower plate welding point are fitted together.

[0014] High-temperature and corrosion-resistant metal plates are made of high-purity nickel, nickel-based high-temperature alloys, or stainless steel with a melting point >1200℃; high thermal conductivity metal plates are made of copper or copper alloys with a thermal conductivity >90W / (m·K).

[0015] The tooth tip angle of the annular teeth is 50° to 70°, the tooth spacing is 0.4 to 0.6 mm, and the tooth height is 0.2 to 0.4 mm.

[0016] After the composite welding in step 3, the bonding rate between the high-temperature resistant and corrosion-resistant metal and the high thermal conductivity metal is ≥99%.

[0017] The outer diameters of the upper high-temperature and corrosion-resistant metal sheet with the assembled structure and the lower high-temperature and corrosion-resistant metal sheet with the assembled structure are the same, both being 50-55mm; the outer diameter of the high thermal conductivity metal sheet with the assembled structure is 85%-95% of the outer diameter of the upper high-temperature and corrosion-resistant metal sheet with the assembled structure, and the inner diameter of the high thermal conductivity metal material is 10-13mm.

[0018] During the diffusion welding process, the temperature is 450–550℃, the holding time is 3–6 hours, the pressure is 110 MPa–130 MPa, and the vacuum degree is ≤5*10. -3 Pa.

[0019] The volume percentage of high thermal conductivity metallic material in the high-temperature resistant, long-life sampling cone is 25%–90%.

[0020] After step 4, precision machining is performed.

[0021] The beneficial effects of this invention are as follows: by using welding technology to combine high-temperature and corrosion-resistant metal materials and high thermal conductivity metal materials into a first structural component, and by adjusting the volume ratio of the high thermal conductivity metal material, the thermal conductivity of the sampling cone is enhanced. A toothed structure is processed at the interface between the two materials to improve the welding joint rate and welding strength, thereby enhancing the thermal conductivity and working strength of the sampling cone, and ultimately improving the high-temperature resistance and extending the service life of the sampling cone. Attached Figure Description

[0022] Figure 1 This is a schematic flowchart illustrating a broad embodiment of the method for manufacturing a high-temperature resistant, long-life sampling cone according to the present invention.

[0023] Figure 2 This is a schematic diagram of the structure after welding in a broad embodiment of the present invention.

[0024] Figure 3 for Figure 2 A magnified view of a portion of region I.

[0025] Figure 4 This is a schematic diagram of the structure after preparation in a broad embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the sampling cone obtained after precision machining in a broad embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1The broad embodiment of the present invention shown first comprises a sampling cone made of a high-temperature and corrosion-resistant metal plate and a high thermal conductivity metal material, forming a tightly fitted first structural component; then it is formed and prepared, with the contact surfaces of the two materials having a toothed interlocking structure. This includes:

[0029] Step 1: Prepare metal plates: Prepare two high-temperature and corrosion-resistant metal plates and one high thermal conductivity metal plate, and process the high-temperature and corrosion-resistant metal plates and the high thermal conductivity metal plate into circles;

[0030] Step 2: Process two high-temperature and corrosion-resistant metal plates and one high-thermal-conductivity metal plate into an assembly structure to form a high-temperature and corrosion-resistant upper metal plate 1, a high-performance thermally conductive metal sandwich layer 2, and a high-temperature and corrosion-resistant lower metal plate 3. Specifically:

[0031] The high-temperature and corrosion-resistant metal upper plate 1 has two steps. The processed high-temperature and corrosion-resistant metal upper plate 1 includes: the upper plate welding step 101 of the outer layer, the upper plate contact step 102 of the middle layer, and the upper plate contact surface 103 of the inner layer; then, annular teeth are machined on the surface of the upper plate contact surface 103.

[0032] The high-temperature and corrosion-resistant metal lower plate 3 has two steps. The processed high-temperature and corrosion-resistant metal lower plate 3 includes: the outer lower plate welding step 301, the middle lower plate contact step 302, and the inner lower plate boss 303; then, annular teeth are machined on the surface of the lower plate contact step 302 and the surface of the lower plate boss 303.

[0033] The high-performance thermally conductive metal sandwich layer 2 is a ring with a rectangular cross-section. Annular teeth are machined on the upper and lower end faces of the high-performance thermally conductive metal sandwich layer 2. The annular teeth on the upper end face and the lower plate boss 303 of the high-performance thermally conductive metal sandwich layer 2 match the annular teeth on the upper plate contact surface 103. The annular teeth on the lower end face of the high-performance thermally conductive metal sandwich layer 2 match the annular teeth on the lower plate contact step 302.

[0034] Step 3: Assembly and Welding: Assemble the high-temperature and corrosion-resistant metal upper layer 1, the high-performance thermally conductive metal sandwich layer 2, and the high-temperature and corrosion-resistant metal lower layer 3 together, checking and ensuring that all annular teeth fit together; use electron beam welding technology to weld the splicing interface between the upper plate welding step 101 and the lower plate welding step 301; then perform diffusion welding as a whole to weld the three-layer composite material into a shape as shown. Figure 2 and Figure 3 The first structural component shown.

[0035] Step 4, Structural component forming: The first structural component is formed using plastic forming as shown in the figure. Figure 4 The cone-shaped structure shown.

[0036] Step 5: Precision machining to obtain a high-temperature resistant, long-life sampling cone. The manufacturing method is as follows: Figure 5 As shown, the structure of a high-temperature resistant, long-life sampling cone prepared by the method of the present invention can be used in inductively coupled plasma mass spectrometry.

[0037] In step 1, the high-temperature and corrosion-resistant metal sheet is made of high-purity nickel, nickel-based high-temperature alloy or stainless steel with a melting point >1200℃; the high thermal conductivity metal sheet is made of copper or copper alloy with a thermal conductivity >90W / (m·K).

[0038] In step 2, the outer diameter of the high-temperature and corrosion-resistant metal upper plate 1 and the high-temperature and corrosion-resistant metal lower plate 3 before assembly is 50-55 mm, and the total thickness is 8-10 mm. The outer diameter of the high thermal conductivity metal material 2 is 85%-95% of the outer diameter of the high-temperature and corrosion-resistant metal upper plate 1, the inner diameter is 10-13 mm, and the thickness is 1.5-4 mm. At the same time, it is necessary to ensure that the volume ratio of the high thermal conductivity metal material is 25%-90%.

[0039] In step 2, the tooth tip angle of the annular teeth is 50° to 70°, the tooth spacing is 0.4 to 0.6 mm, and the tooth height is 0.2 to 0.4 mm.

[0040] The step, consisting of the upper plate welding step 101 and the middle layer upper plate contact step 102, facilitates positioning and control of the weld depth in step 3.

[0041] The diffusion welding in step 3 is performed at a temperature of 450–550℃, a holding time of 3–6 hours, a pressure of 110 MPa–130 MPa, and a vacuum degree of ≤5*10. -3 Pa.

[0042] After the composite welding in step 3, the bonding rate between the high-temperature resistant and corrosion-resistant metal and the high thermal conductivity metal is ≥99%.

[0043] Example 1

[0044] The sampling cone, manufactured using a high-temperature resistant, long-life sampling cone production method, is formed by interfacing and diffusing high-purity nickel and copper to create a first structural component, followed by precision machining. The copper volume percentage is 30%, and the interface between the two materials has a toothed interlocking structure. The manufacturing method includes the following steps:

[0045] Step 1: Prepare metal plates: Process high-purity nickel and copper metal plates into circles; the outer diameter of the high-purity nickel is 50mm and the thickness is 10mm, the outer diameter of the copper is 48mm, the inner diameter is 12mm and the thickness is 1.8mm, and the inner diameter of the groove of the upper nickel plate is 48.5mm and the height is 1.8mm.

[0046] Step 2: According to the set dimensions, process the contact position of the upper and lower high-purity nickel plates into a stepped splicing structure to facilitate positioning and control of the welding depth. Then, machine teeth on the surfaces of the upper and lower high-purity nickel plates that are in contact with the copper plate, with a tooth tip angle of 50°, a tooth spacing of 0.4mm, and a tooth height of 0.2mm.

[0047] Step 3: Assembly and Welding: Electron beam welding technology is used to weld the stepped interface of the upper and lower high-purity nickel plates. Electron beam welding parameters: high voltage 70kV, welding beam current 10mA. Diffusion welding technology is used to weld the above three-layer composite material into the first structural component. Diffusion welding parameters: temperature 450℃, holding time 3 hours, pressure 110MPa, vacuum degree 5*10 -3 Pa. After diffusion welding, the weld bonding rate between the high-purity nickel plate and the copper plate is 99%.

[0048] Step 4: Structural component forming: The above-mentioned structural component is formed into a conical structure using a molding process;

[0049] Step 5, Precision Machining: Precision machining is performed to obtain a high-temperature resistant, long-life sampling cone with a microhole machining accuracy of ±20μm, a taper accuracy of ±0.5°, and a cone surface roughness Ra≤0.2μm.

[0050] In Example 1, the sampling cone obtained was used in an inductively coupled plasma mass spectrometer. When the metal solution signal dropped to 1 / 4, the sampling cone had been working continuously for more than 1000 hours.

[0051] Example 2

[0052] The sampling cone, manufactured using a high-temperature resistant, long-life sampling cone production method, is formed by interfacing and diffusing high-purity nickel and copper to create a first structural component, followed by precision machining. The copper volume percentage is 90%, and the interface between the two materials has a toothed interlocking structure. The manufacturing method includes the following steps:

[0053] Step 1: Prepare metal plates: Process high-purity nickel plate and copper plate into circles; the outer diameter of the high-purity nickel plate is 55mm and the thickness is 8mm, the outer diameter of the copper plate is 49mm, the inner diameter is 11mm and the thickness is 3mm, and the inner diameter of the groove of the upper nickel plate is 49.5mm and the height is 3mm.

[0054] Step 2: According to the set dimensions, process the contact position of the upper and lower high-purity nickel plates into a stepped splicing structure to facilitate positioning and control of welding depth. Then, machine teeth on the surfaces of the upper and lower high-purity nickel plates that are in contact with the high thermal conductivity metal plate, with a tooth tip angle of 70°, a tooth spacing of 0.6mm, and a tooth height of 0.4mm.

[0055] Step 3: Assembly and Welding: Electron beam welding technology is used to weld the stepped interface between the upper and lower high-purity nickel plates. Electron beam welding parameters: high voltage 90kV, welding beam current 20mA. Diffusion welding technology is used to weld the above three-layer composite material into the first structural component. Diffusion welding parameters: temperature 550℃, holding time 6 hours, pressure 130MPa, vacuum degree 5*10 -3 Pa. After diffusion welding, the weld bonding rate between the high-temperature resistant and corrosion-resistant metal and the high thermal conductivity metal is 99.9%.

[0056] Step 4: Structural component forming: The above-mentioned structural components are formed into a conical structure using a molding process.

[0057] Step 5, Precision Machining: Precision machining is performed to obtain a high-temperature resistant, long-life sampling cone with a microhole machining accuracy of ±20μm, a taper accuracy of ±0.5°, and a cone surface roughness Ra≤0.2μm.

[0058] The sampling cone obtained in Example 2 was used in an inductively coupled plasma mass spectrometer. When the metal solution signal dropped to 1 / 4, the sampling cone could work continuously for more than 1200 hours.

[0059] Example 3

[0060] The sampling cone, manufactured using a high-temperature resistant, long-life sampling cone fabrication method, is formed by interfacing and diffusion welding of a nickel-based high-temperature alloy and copper to create a first structural component, followed by precision machining. The copper volume percentage is 40%, and the interface between the two materials has a toothed interlocking structure. The fabrication method includes the following steps:

[0061] Step 1: Prepare metal plates: Process nickel-based superalloy and copper plates into circles. The nickel-based superalloy has an outer diameter of 55mm, an inner diameter of 11.5mm, and a thickness of 8mm. The copper has an outer diameter of 50mm and a thickness of 2mm. The upper nickel-based superalloy groove has an outer diameter of 50.5mm and a height of 2mm.

[0062] Step 2: According to the set dimensions, the electron beam welding positions of the upper and lower nickel-based high-temperature alloy metal plates are processed into a stepped splicing structure to facilitate positioning and control of welding depth. Then, teeth are machined on the surfaces of the upper and lower nickel-based high-temperature alloy metal plates that contact the copper metal plate, with a tooth tip angle of 70°, a tooth spacing of 0.6mm, and a tooth height of 0.4mm.

[0063] Step 3: Assembly and Welding: Electron beam welding technology is used to weld the stepped interface of the upper nickel-based superalloy metal plate, copper metal plate, and lower nickel-based superalloy metal plate. Electron beam welding parameters: high voltage 90kV, welding beam current 20mA. Diffusion welding technology is used to weld the above three-layer composite material into the first structural component. Diffusion welding parameters: temperature 550℃, holding time 6 hours, pressure 130MPa, vacuum degree 5*10-3 Pa. After diffusion welding, the weld bonding rate between the nickel-based superalloy and copper was 99.9%.

[0064] Step 4: Structural component forming: The above-mentioned structural component is formed into a conical structure using a spinning process.

[0065] Step 5, Precision Machining: Precision machining is performed to obtain a high-temperature resistant, long-life sampling cone with a microhole machining accuracy of ±20μm, a taper accuracy of ±0.5°, and a cone surface roughness Ra≤0.2μm.

[0066] The sampling cone obtained in Example 3 was used in an inductively coupled plasma mass spectrometer. When the metal solution signal dropped to 1 / 4, the sampling cone could work continuously for more than 1000 hours.

[0067] Comparative Example 1

[0068] The sampling cone, manufactured using a high-temperature resistant, long-life sampling cone production method, is formed by interfacing and diffusing high-purity nickel and copper to create a first structural component, followed by precision machining. The copper volume percentage is 10%, and the interface between the two materials has a toothed interlocking structure. The manufacturing method includes the following steps:

[0069] Step 1: Prepare metal plates: Process high-purity nickel and copper metal plates into circles; the outer diameter of the high-purity nickel is 55mm and the thickness is 10mm, the outer diameter of the copper is 43mm, the inner diameter is 13mm and the thickness is 1.6mm, and the outer diameter of the groove of the upper nickel plate is 43.5mm and the height is 1.6mm.

[0070] Step 2: According to the set dimensions, process the contact position of the upper and lower high-purity nickel plates into a stepped splicing structure to facilitate positioning and control of the welding depth. Then, machine teeth on the surfaces of the upper and lower high-purity nickel plates that are in contact with the copper plate, with a tooth tip angle of 50°, a tooth spacing of 0.4mm, and a tooth height of 0.2mm.

[0071] Step 3: Assembly and Welding: Electron beam welding technology is used to weld the stepped interface of the upper and lower high-purity nickel plates. Electron beam welding parameters: high voltage 70kV, welding beam current 10mA. Diffusion welding technology is used to weld the above three-layer composite material into the first structural component. Diffusion welding parameters: temperature 450℃, holding time 3 hours, pressure 110MPa, vacuum degree 5*10 -3 Pa. After diffusion welding, the weld bonding rate between the high-purity nickel plate and the copper plate is 99%.

[0072] Step 4: Structural component forming: The above-mentioned structural components are formed into a conical structure using a molding process.

[0073] Step 6, Precision Machining: Precision machining is performed to obtain a method for manufacturing a high-temperature resistant, long-life sampling cone.

[0074] The sampling cone obtained in this comparative example was used in an inductively coupled plasma mass spectrometer. Due to its poor thermal conductivity, the continuous working time of the sampling cone was less than 700 hours when the signal in the metal solution dropped to 1 / 4.

[0075] Comparative Example 2

[0076] A sampling cone manufactured using a high-temperature resistant, long-life sampling cone fabrication method is described. The sampling cone is formed by interfacing and diffusing high-purity nickel and copper to create a first structural component, followed by shaping and precision machining. The copper volume percentage is 95%, and the interface between the two materials has a toothed interlocking structure. The fabrication method includes the following steps:

[0077] Step 1: Prepare metal plates: Process high-purity nickel plate and copper plate into circles; the outer diameter of the high-purity nickel plate is 55mm and the thickness is 8mm, the outer diameter of the copper plate is 49.6mm, the inner diameter is 10mm and the thickness is 3mm, and the outer diameter of the groove of the upper nickel plate is 49.6mm and the height is 3mm.

[0078] Step 2: According to the set dimensions, process the contact position of the upper and lower high-purity nickel plates into a stepped splicing structure to facilitate positioning and control of welding depth. Then, machine teeth on the surfaces of the upper and lower high-purity nickel plates that are in contact with the high thermal conductivity metal plate, with a tooth tip angle of 70°, a tooth spacing of 0.6mm, and a tooth height of 0.4mm.

[0079] Step 3: Assembly and Welding: Electron beam welding technology is used to weld the stepped interface between the upper and lower high-purity nickel plates. Electron beam welding parameters: high voltage 90kV, welding beam current 20mA. Diffusion welding technology is used to weld the above three-layer composite material into the first structural component. Diffusion welding parameters: temperature 550℃, holding time 6 hours, pressure 130MPa, vacuum degree 5*10 -3 Pa. After diffusion welding, the weld bonding rate between the high-temperature resistant and corrosion-resistant metal and the high thermal conductivity metal is 99.9%.

[0080] Step 4: Structural component forming: The above-mentioned structural component is formed into a conical structure using a molding process.

[0081] Step 5, Precision Machining: Precision machining is performed to obtain a method for manufacturing a high-temperature resistant, long-life sampling cone.

[0082] The sampling cone obtained in this comparative example was used in an inductively coupled plasma mass spectrometer. Due to reduced temperature resistance and strength, the sampling cone was prone to deformation during use. When the signal in the metal solution dropped to 1 / 4, the continuous working time was less than 600 hours.

Claims

1. A method for manufacturing a high-temperature resistant, long-life sampling cone, characterized in that, include: Step 1: Prepare metal plates: Prepare two high-temperature and corrosion-resistant metal plates and one metal plate with high thermal conductivity. Step 2: Fabricate the assembly structure for the upper high-temperature and corrosion-resistant metal sheet, the assembly structure for the high thermal conductivity metal sheet, and the assembly structure for the lower high-temperature and corrosion-resistant metal sheet. The process of fabricating the assembly structure of the upper high-temperature and corrosion-resistant metal sheet includes: processing the upper plate contact step and the inner upper plate contact surface, and machining annular teeth on the surface of the upper plate contact surface. The process of fabricating the assembly structure of the lower high-temperature and corrosion-resistant metal sheet includes: processing the lower plate contact step and the inner lower plate boss, and machining annular teeth on the surface of the lower plate contact step and the surface of the lower plate boss. The process of fabricating an assembly structure from a high thermal conductivity metal sheet includes: processing the high thermal conductivity metal sheet into a ring with a rectangular cross-section; machining annular teeth on the upper and lower end faces of the high thermal conductivity metal sheet; assembling the annular teeth on the upper end face of the high thermal conductivity metal sheet and the lower plate boss; matching the annular teeth on the contact surface of the upper plate; and matching the annular teeth on the lower end face of the high thermal conductivity metal sheet with the annular teeth on the contact step of the lower plate. Step 3, Assembly and Welding: Assemble the upper high-temperature and corrosion-resistant metal plate, the high thermal conductivity metal plate, and the lower high-temperature and corrosion-resistant metal plate with the assembly structure together; use electron beam welding technology to weld the splicing interface between the upper and lower high-temperature and corrosion-resistant metal plates, and then perform diffusion welding to produce the first structural component; Step 4, Structural component forming: The first structural component is formed into a cone shape using plastic forming.

2. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 1, characterized in that, The upper plate contact step is further processed with an upper plate welding step, and the lower plate contact step is further processed with a lower plate welding step.

3. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 2, characterized in that, The steps at the upper plate welding point and the steps at the lower plate welding point are fitted together.

4. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 1, characterized in that, High-temperature and corrosion-resistant metal plates are made of high-purity nickel, nickel-based high-temperature alloys, or stainless steel with a melting point >1200℃; high thermal conductivity metal plates are made of copper or copper alloys with a thermal conductivity >90W / (m·K).

5. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 1, characterized in that, The tooth tip angle of the annular teeth is 50° to 70°, the tooth spacing is 0.4 to 0.6 mm, and the tooth height is 0.2 to 0.4 mm.

6. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 1, characterized in that, After the composite welding in step 3, the bonding rate between the high-temperature resistant and corrosion-resistant metal and the high thermal conductivity metal is ≥99%.

7. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 1, characterized in that, The outer diameters of the upper high-temperature and corrosion-resistant metal sheet with the assembled structure and the lower high-temperature and corrosion-resistant metal sheet with the assembled structure are the same, both being 50-55mm; the outer diameter of the high thermal conductivity metal sheet with the assembled structure is 85%-95% of the outer diameter of the upper high-temperature and corrosion-resistant metal sheet with the assembled structure, and the inner diameter of the high thermal conductivity metal material is 10-13mm.

8. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 1, characterized in that, During the diffusion welding process, the temperature is 450–550℃, the holding time is 3–6 hours, the pressure is 110 MPa–130 MPa, and the vacuum degree is ≤5*10. -3 Pa.

9. A method for manufacturing a high-temperature resistant, long-life sampling cone according to any one of claims 1 to 8, characterized in that, The volume percentage of high thermal conductivity metal material in the high-temperature resistant, long-life sampling cone is 25%–90%.

10. The method for manufacturing a high-temperature resistant, long-life sampling cone according to claim 9, characterized in that, After step 4, precision machining is performed.

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