Novel corrosion-resistant titanium tee joint and manufacturing method

Abstract

The invention provides a novel corrosion-resistant titanium tee joint and a manufacturing method, the titanium tee joint comprises a titanium pipe main pipe and a titanium pipe branch pipe, a V-shaped groove is formed in the middle of the titanium pipe main pipe, the bottom end of the titanium pipe branch pipe is welded in the V-shaped groove, and the inner wall of the titanium pipe main pipe and the inner wall of the titanium pipe branch pipe are further sprayed with anti-corrosion coatings. And in addition, the anti-corrosion performance is excellent, and the service life is long.

Description

Technical Field

[0001] The present application relates to the technical field of titanium tee manufacturing, and in particular to a novel corrosion-resistant titanium tee and a manufacturing method thereof. Background Art

[0002] Titanium is very stable at room temperature, but as the temperature rises, the ability of titanium welds to absorb hydrogen and oxygen increases. Experimental studies have shown that titanium generally begins to absorb hydrogen, oxygen, and nitrogen from 250°C. During welding, the higher the temperature and the longer the insulation time, the worse the plasticity of the weld. Therefore, when welding titanium, if argon arc welding is used, ordinary welding guns cannot meet the requirements, because it cannot effectively protect the weld, causing high-temperature welds and heat-affected zones to absorb gases such as hydrogen, oxygen, and nitrogen. Nitrogen, oxygen, and hydrogen intrusion can form interstitial solid solutions in the weld, reducing the plasticity and toughness of the weld, while hydrogen can also significantly reduce the impact toughness of the weld and make the weld joint brittle, so a large nozzle welding gun must be used.

[0003] The current titanium tee manufacturing process is complicated, and the produced tee has low compressive strength and poor corrosion resistance, which affects the service life. Therefore, it is necessary to make improvements. Summary of the invention

[0004] The present application provides a new type of corrosion-resistant titanium tee and a manufacturing method to solve the problems of high manufacturing cost and poor corrosion resistance of titanium tees in the prior art. The titanium tee has strong overall compressive resistance, is not easy to deform and damage, has excellent corrosion resistance, and has a long service life.

[0005] The present application provides a novel corrosion-resistant titanium tee, which comprises a titanium tube main pipe and a titanium tube branch pipe. A V-shaped groove is provided in the middle of the titanium tube main pipe, and the bottom end of the titanium tube branch pipe is welded in the V-shaped groove. The inner walls of the titanium tube main pipe and the titanium tube branch pipe are also sprayed with an anti-corrosion coating.

[0006] Preferably, the anti-corrosion coating components include 40-60 parts of ethylene-chlorotrifluoroethylene copolymer, 5-12 parts of anhydrous ethanol, 4-8 parts of ammonia, 8-10 parts of flake graphite, and 10-20 parts of aluminum oxide in parts by weight. 、 1-3 parts of long-chain silane coupling agent, 10-20 parts of epoxy resin.

[0007] Preferably, a method for making a novel corrosion-resistant titanium tee comprises the following steps:

[0008] A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee;

[0009] B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining;

[0010] C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining;

[0011] D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe;

[0012] E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove;

[0013] F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe;

[0014] G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove;

[0015] H. After welding is completed, the weld is cooled evenly;

[0016] I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee;

[0017] J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

[0018] Preferably, in step F, the flow rate of high-purity argon gas is 18L-25L / min.

[0019] Preferably, the specific welding process in step G is as follows:

[0020] a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 60-72A, voltage range is 8-10V, welding speed is 25-35mm / min, heat input is 0.7-1.4kj / mm;

[0021] b. Then weld the filling layer. The filling layer adopts GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 72-82A, the voltage range is 8-10V, the welding speed is 35-60mm / min, and the heat input is 0.5-1.2kj / mm;

[0022] c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 70-80A, the voltage range is 8-10V, the welding speed is 35-45mm / min, and the heat input is 0.8-1.4kj / mm.

[0023] Preferably, in step H, cooling is performed by air cooling or atomization cooling.

[0024] Preferably, in step I, the thickness of the sprayed anti-corrosion coating is 0.5 mm to 0.8 mm.

[0025] Preferably, in step I and step J, the drying temperature is 55° C.-65° C., and the drying time is 60 min-70 min.

[0026] Beneficial effects:

[0027] (1) The manufacturing method of the present invention is simple, and the titanium tee obtained has strong overall compressive resistance, is not easy to deform and damage, and also has excellent corrosion resistance and a long service life.

[0028] (2) In the present invention, a V-shaped groove is opened in the middle of the titanium tube main pipe, the bottom end of the titanium tube branch pipe is processed into a V-shaped plug-in section, and the V-shaped plug-in section is welded into the V-shaped groove. This connection method can improve the connection firmness between the titanium tube main pipe and the titanium tube branch pipe.

[0029] (3) The welding method adopted by the present invention can effectively avoid the absorption of oxygen, nitrogen, hydrogen, carbon, etc. during the titanium tube welding process, and avoid the generation of pores during the welding process, thereby achieving high-quality welding effects.

[0030] (4) In the present invention, the anti-corrosion coating sprayed on the inner wall of the titanium tee can further enhance the anti-corrosion effect of the tee.

[0031] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 A flow chart of the method for making the present invention;

[0035] Description of the reference numerals: titanium tube main pipe 1, titanium tube branch pipe 2, V-shaped groove 3. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0040] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit ​​connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0042] See also Figure 1-Figure 2The present application discloses a novel corrosion-resistant titanium tee, which comprises a titanium tube main pipe 1 and a titanium tube branch pipe 2. A V-shaped groove 3 is provided in the middle of the titanium tube main pipe 1, and the bottom end of the titanium tube branch pipe 2 is welded in the V-shaped groove 3. The inner walls of the titanium tube main pipe 1 and the titanium tube branch pipe 2 are also sprayed with an anti-corrosion coating.

[0043] Embodiment 1:

[0044] The anti-corrosion coating components include 40 parts of ethylene-chlorotrifluoroethylene copolymer, 5 parts of anhydrous ethanol, 4 parts of ammonia, 8 parts of flake graphite, and 10 parts of aluminum oxide by weight. 、 1 part of long-chain silane coupling agent and 10 parts of epoxy resin.

[0045] In this embodiment, a method for making a novel corrosion-resistant titanium tee comprises the following steps:

[0046] A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee;

[0047] B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining;

[0048] C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining;

[0049] D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe;

[0050] E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove;

[0051] F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe;

[0052] G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove;

[0053] H. After welding is completed, the weld is cooled evenly;

[0054] I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee;

[0055] J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

[0056] In this embodiment, the flow rate of high-purity argon gas in step F is 18 L / min.

[0057] In this embodiment, the specific welding process in step G is as follows:

[0058] a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 60A, voltage range is 8V, welding speed is 25mm / min, heat input is 0.7kj / mm;

[0059] b. Then weld the filling layer. The filling layer adopts GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 72A, the voltage range is 8V, the welding speed is 35mm / min, and the heat input is 0.5kj / mm;

[0060] c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 70A, the voltage range is 8V, the welding speed is 35mm / min, and the heat input is 0.8kj / mm.

[0061] In this embodiment, in step H, air cooling or atomization cooling is used for cooling.

[0062] In this embodiment, in step I, the thickness of the sprayed anti-corrosion coating is 0.5 mm.

[0063] In this embodiment, in step I, in step J, the drying temperature is 55° C. and the drying time is 60 min.

[0064] Embodiment 2:

[0065] The anti-corrosion coating components include 60 parts of ethylene-chlorotrifluoroethylene copolymer, 12 parts of anhydrous ethanol, 8 parts of ammonia, 10 parts of flake graphite, and 20 parts of aluminum oxide by weight. 、 3 parts of long-chain silane coupling agent and 20 parts of epoxy resin.

[0066] In this embodiment, a method for making a novel corrosion-resistant titanium tee comprises the following steps:

[0067] A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee;

[0068] B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining;

[0069] C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining;

[0070] D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe;

[0071] E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove;

[0072] F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe;

[0073] G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove;

[0074] H. After welding is completed, the weld is cooled evenly;

[0075] I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee;

[0076] J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

[0077] In this embodiment, the flow rate of high-purity argon gas in step F is 25 L / min.

[0078] In this embodiment, the specific welding process in step G is as follows:

[0079] a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 72A, voltage range is 10V, welding speed is 35mm / min, heat input is 1.4kj / mm;

[0080] b. Then weld the filling layer. The filling layer adopts GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 82A, the voltage range is 10V, the welding speed is 60mm / min, and the heat input is 1.2kj / mm;

[0081] c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 80A, the voltage range is 10V, the welding speed is 45mm / min, and the heat input is 1.4kj / mm.

[0082] In this embodiment, in step H, air cooling or atomization cooling is used for cooling.

[0083] In this embodiment, in step I, the thickness of the sprayed anti-corrosion coating is 0.8 mm.

[0084] In this embodiment, in step I, in step J, the drying temperature is 65° C. and the drying time is 70 min.

[0085] Embodiment three:

[0086] The anti-corrosion coating components include 45 parts of ethylene-chlorotrifluoroethylene copolymer, 6 parts of anhydrous ethanol, 5 parts of ammonia, 8 parts of flake graphite, and 12 parts of aluminum oxide by weight. 、2 parts of long-chain silane coupling agent and 12 parts of epoxy resin.

[0087] In this embodiment, a method for making a novel corrosion-resistant titanium tee comprises the following steps:

[0088] A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee;

[0089] B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining;

[0090] C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining;

[0091] D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe;

[0092] E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove;

[0093] F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe;

[0094] G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove;

[0095] H. After welding is completed, the weld is cooled evenly;

[0096] I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee;

[0097] J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

[0098] In this embodiment, the flow rate of high-purity argon gas in step F is 19 L / min.

[0099] In this embodiment, the specific welding process in step G is as follows:

[0100] a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 62A, voltage range is 8V, welding speed is 27mm / min, heat input is 0.8kj / mm;

[0101] b. Then weld the filling layer. The filling layer adopts GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 75A, the voltage range is 8V, the welding speed is 40mm / min, and the heat input is 0.7kj / mm;

[0102] c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 72A, the voltage range is 8V, the welding speed is 37mm / min, and the heat input is 0.9kj / mm.

[0103] In this embodiment, in step H, air cooling or atomization cooling is used for cooling.

[0104] In this embodiment, in step I, the thickness of the sprayed anti-corrosion coating is 0.6 mm.

[0105] In this embodiment, in step I, in step J, the drying temperature is 57° C. and the drying time is 62 min.

[0106] Embodiment 4:

[0107] The anti-corrosion coating components include 58 parts of ethylene-chlorotrifluoroethylene copolymer, 10 parts of anhydrous ethanol, 7 parts of ammonia, 9 parts of flake graphite, and 18 parts of aluminum oxide by weight. 、 2 parts of long-chain silane coupling agent and 18 parts of epoxy resin.

[0108] In this embodiment, a method for making a novel corrosion-resistant titanium tee comprises the following steps:

[0109] A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee;

[0110] B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining;

[0111] C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining;

[0112] D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe;

[0113] E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove;

[0114] F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe;

[0115] G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove;

[0116] H. After welding is completed, the weld is cooled evenly;

[0117] I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee;

[0118] J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

[0119] In this embodiment, the flow rate of high-purity argon gas in step F is 23 L / min.

[0120] In this embodiment, the specific welding process in step G is as follows:

[0121] a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 70A, voltage range is 10V, welding speed is 33mm / min, heat input is 1.3kj / mm;

[0122] b. Then weld the filling layer. The filling layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 80A, the voltage range is 10V, the welding speed is 58mm / min, and the heat input is 1.1kj / mm;

[0123] c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 77A, the voltage range is 10V, the welding speed is 42mm / min, and the heat input is 1.3kj / mm.

[0124] In this embodiment, in step H, air cooling or atomization cooling is used for cooling.

[0125] In this embodiment, in step I, the thickness of the sprayed anti-corrosion coating is 0.7 mm.

[0126] In this embodiment, in step I, in step J, the drying temperature is 62° C. and the drying time is 68 min.

[0127] Embodiment five:

[0128] The anti-corrosion coating components include 50 parts of ethylene-chlorotrifluoroethylene copolymer, 8 parts of anhydrous ethanol, 6 parts of ammonia, 9 parts of flake graphite, and 15 parts of aluminum oxide by weight. 、 2 parts of long-chain silane coupling agent and 15 parts of epoxy resin.

[0129] In this embodiment, a method for making a novel corrosion-resistant titanium tee comprises the following steps:

[0130] A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee;

[0131] B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining;

[0132] C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining;

[0133] D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe;

[0134] E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove;

[0135] F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe;

[0136] G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove;

[0137] H. After welding is completed, the weld is cooled evenly;

[0138] I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee;

[0139] J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

[0140] In this embodiment, the flow rate of high-purity argon gas in step F is 22 L / min.

[0141] In this embodiment, the specific welding process in step G is as follows:

[0142] a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 68A, voltage range is 9V, welding speed is 30mm / min, heat input is 1.2kj / mm;

[0143] b. Then weld the filling layer. The filling layer adopts GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 78A, the voltage range is 9V, the welding speed is 45mm / min, and the heat input is 0.8kj / mm;

[0144] c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 75A, the voltage range is 9V, the welding speed is 40mm / min, and the heat input is 1.1kj / mm.

[0145] In this embodiment, in step H, air cooling or atomization cooling is used for cooling.

[0146] In this embodiment, in step I, the thickness of the sprayed anti-corrosion coating is 0.7 mm.

[0147] In this embodiment, in step I, in step J, the drying temperature is 60° C. and the drying time is 65 min.

[0148] Experimental example:

[0149] The titanium tees prepared by the various embodiments of the present invention were subjected to performance tests, and the data obtained are as follows:

[0150] Compressive strength(MPA) Corrosion resistance Embodiment 1 55.8 Excellent Embodiment 2 56.9 Embodiment 3 59.2 Excellent Embodiment 4 58.2 Excellent Embodiment 5 61.4 Excellent

[0151] In the present invention, a V-shaped groove is opened in the middle of the titanium tube main pipe, the bottom end of the titanium tube branch pipe is processed into a V-shaped plug-in section, and the V-shaped plug-in section is welded in the V-shaped groove. This connection method can improve the connection firmness between the titanium tube main pipe and the titanium tube branch pipe; the welding method adopted in the present invention can effectively avoid the absorption of oxygen, nitrogen, hydrogen, carbon, etc. by the titanium tube during welding, and avoid the generation of pores during the welding process, so as to achieve high-quality welding effect; in the present invention, the anti-corrosion coating sprayed on the inner wall of the titanium tee can further enhance the anti-corrosion effect of the tee.

[0152] In summary, the manufacturing method of the present invention is simple, the manufactured titanium tee has strong overall compressive resistance, is not easy to deform and damage, has excellent corrosion resistance, and has a long service life.

[0153] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of corrosion-resistant titanium tee, characterized in that: The titanium tee comprises a titanium tube main pipe (1) and a titanium tube branch pipe (2); a V-shaped groove (3) is provided in the middle of the titanium tube main pipe (1); the bottom end of the titanium tube branch pipe (2) is welded in the V-shaped groove (3); and the inner walls of the titanium tube main pipe (1) and the titanium tube branch pipe (2) are sprayed with an anti-corrosion coating.

2. A novel corrosion-resistant titanium tee according to claim 1, characterized in that: The anti-corrosion coating components include 40-60 parts of ethylene-chlorotrifluoroethylene copolymer, 5-12 parts of anhydrous ethanol, 4-8 parts of ammonia, 8-10 parts of flake graphite, and 10-20 parts of aluminum oxide in parts by weight. 、 1-3 parts of long-chain silane coupling agent, 10-20 parts of epoxy resin.

3. A method for manufacturing a novel corrosion-resistant titanium tee according to claim 1, characterized in that: The preparation method thereof comprises the following steps: A. First, cut a section of titanium main pipe and titanium branch pipe of matching size according to the size of the tee; B. Then, a V-shaped groove is cut in the middle of the main titanium tube by machining; C. Then, a V-shaped splice section is cut at the bottom of the titanium tube branch by machining; D. Clean and decontaminate the titanium tube main pipe and titanium tube branch pipe; E. Insert plugs at both ends of the titanium tube main pipe, and insert the V-shaped plug section into the V-shaped groove; F. Then, high-purity argon gas is passed through the titanium tube main pipe and the titanium tube branch pipe; G. Then use welding rods to weld the V-shaped plug-in section firmly into the V-shaped groove; H. After welding is completed, the weld is cooled evenly; I. Use a spray gun to spray an anti-corrosion coating on the inner wall of the titanium tee; J. Finally, place the titanium tee into a drying oven for drying to complete the production of the corrosion-resistant titanium tee.

4. The method for manufacturing a novel corrosion-resistant titanium tee according to claim 3 is characterized in that: In step F, the flow rate of high-purity argon gas is 18L-25L / min.

5. The method for manufacturing a novel corrosion-resistant titanium tee according to claim 3 is characterized in that: The specific welding process in step G is as follows: a. First, weld the base layer: select welding materials of grade ERTi-2 and brand TI-2, current polarity is DCEN, current range is 60-72A, voltage range is 8-10V, welding speed is 25-35mm / min, heat input is 0.7-1.4kj / mm; b. Then weld the filling layer. The filling layer adopts GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 72-82A, the voltage range is 8-10V, the welding speed is 35-60mm / min, and the heat input is 0.5-1.2kj / mm; c. Finally, weld the cover layer: The cover layer adopts the GTAW welding method, and the welding materials of grade ERTi-2 and brand TI-2 are selected. The current polarity is DCEN, the current range is 70-80A, the voltage range is 8-10V, the welding speed is 35-45mm / min, and the heat input is 0.8-1.4kj / mm.

6. The method for manufacturing a novel corrosion-resistant titanium tee according to claim 3 is characterized in that: In the step H, cooling is performed by air cooling or atomization cooling.

7. The method for manufacturing a novel corrosion-resistant titanium tee according to claim 3 is characterized in that: In the step I, the thickness of the sprayed anti-corrosion coating is 0.5 mm to 0.8 mm.

8. The method for manufacturing a novel corrosion-resistant titanium tee according to claim 3 is characterized in that: In the step I and the step J, the drying temperature is 55° C.-65° C., and the drying time is 60 min-70 min.

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