High-strength conical end socket and production process thereof

Abstract

The invention provides a high-strength conical end socket and a production process thereof, and relates to the field of conical end socket production. The production process comprises the following steps: selecting materials; rolling a cone; performing splicing; and cleaning. The production process of the conical end socket is optimized, S32304 duplex stainless steel with higher corrosion resistance is selected to manufacture the inner layer structure of the conical end socket, and when corrosive contents are loaded, the inner wall of the conical end socket cannot be corroded by the contents, and the structural strength of the conical end socket cannot be damaged; q235B steel is selected to manufacture the middle layer structure of the conical end socket, and the Q235B steel is one of the most common carbon structural steel and has moderate strength, good plasticity and weldability and high cost performance; common high-manganese steel and Mn20 high-manganese steel are selected for manufacturing the outer wall and the reinforcing framework of the outer layer structure of the conical end socket correspondingly, the strength of the outer layer is improved, and the conical end socket is prevented from being damaged due to external collision; through mutual combination of the three layers of structures, the inner wall of the conical end socket has high corrosion resistance, and the outer wall of the conical end socket has excellent wear resistance and tensile strength.

Description

Technical Field

[0001] The invention relates to the field of conical end cap production, in particular to a high-strength conical end cap and a production process thereof. Background Art

[0002] The conical head is a common industrial pipe and pressure vessel component. It is conical in shape, with the top gradually narrowing to a smaller circular opening or vertex. It is mainly used to close one end of a container or pipe. Through its unique conical design, it can effectively disperse and withstand internal pressure, enhance the stability and safety of the structure. The conical head also facilitates the smooth guidance of fluids or gases, reduces flow resistance, and optimizes material mixing and heat transfer efficiency in some specific applications, such as chemical reactors, heat exchangers or storage tanks. It is made of a variety of materials, including but not limited to stainless steel, carbon steel, alloy steel, etc., to meet the requirements of different industrial fields for corrosion resistance, high temperature resistance or high strength.

[0003] The existing production process of conical heads uses a whole piece of steel, cuts it, rolls it into a cone, and finally welds it. In this production process, the manufacturing difficulty increases with the thickness of the steel during the steel plate rolling process, and the equipment and technology requirements are relatively high. At the same time, using a whole piece of steel to manufacture a conical head, the head must have a certain degree of corrosion resistance and high wear resistance and tensile strength, which requires high steel. The existing process has certain defects in material cost, equipment cost and manufacturing difficulty. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a high-strength conical head and a production process thereof, which solves the problems that the original process has certain defects in material cost, equipment cost and manufacturing difficulty.

[0005] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-strength conical head and a production process thereof, comprising the following steps: S1. Material selection: S32304 duplex stainless steel is selected to make the inner structure of the conical head, Q235B steel is selected to make the middle structure of the conical head, and ordinary high manganese steel and Mn20 high manganese steel are selected to make the outer structure of the conical head; S2, rolling cone, rolling and welding S32304 duplex stainless steel and Q235B steel respectively; S3, splicing, welding the inner layer, middle layer and outer layer structures to each other to form the final shape of the conical head; S4. Cleaning: Use ultrasonic cleaning, electroplating and other processes to treat the surface of the head.

[0006] Furthermore, the step S1 includes the following steps: S11. According to the size of the conical head to be manufactured, use professional software such as CAD or Proe to accurately lay out the conical head, and obtain the precise size of each material required through three-dimensional modeling and calculation.

[0007] Furthermore, in step S2, rolling and welding the S32304 duplex stainless steel and Q235B steel separately comprises the following steps: S21, blanking and cutting, cutting S32304 duplex stainless steel and Q235B steel into fan-shaped steel plates of corresponding sizes, and cutting ordinary high manganese steel and Mn20 high manganese steel into strip steel plates of corresponding sizes; S22, roll the fan-shaped S32304 duplex stainless steel plate into a cone shape by a cone rolling machine, weld the joint seam, and then trim and trim the edge to eliminate burrs and irregular shapes caused by the rolling process. Finally, measure and verify key parameters such as roundness, diameter, wall thickness, etc. S23. The fan-shaped Q235B steel plate is rolled into a cone shape by a cone rolling machine, and the connecting seam is welded. The edges are then trimmed and finished to eliminate burrs and irregular shapes caused by the rolling process. Finally, key parameters such as roundness, diameter, and wall thickness are measured and verified.

[0008] Furthermore, the step S3 includes the following steps: S31, nesting the cone made of S32304 duplex stainless steel plate into the Q235B steel cone, welding the S32304 duplex stainless steel cone and the Q235B steel cone at the openings at both ends of the cone, so that the S32304 duplex stainless steel cone and the Q235B steel cone are connected together; S32. Grind and trim the combination of the S32304 duplex stainless steel cone and the Q235B steel cone; S33, weld Mn20 high manganese steel bars on the outside of the Q235B steel cone as a reinforcement structure; S34. Ordinary high manganese steel plates are welded between Mn20 high manganese steels to completely cover the outside of the Q235B steel cone, so that the conical head is fully formed.

[0009] Furthermore, the step S4 includes the following steps: S41. Use ultrasonic equipment to clean the conical head, and then use a fan to dry the moisture on the surface of the conical head; S42, electroplating the conical head, and then cleaning and drying it.

[0010] (III) Beneficial effects The present invention optimizes the production process of the conical head and selects S32304 duplex stainless steel with higher corrosion resistance to manufacture the inner layer structure of the conical head. When the pressure vessel is loaded with corrosive contents, the inner wall of the conical head will not be corroded by the contents to destroy the structural strength of the conical head; Q235B steel is selected to manufacture the middle layer structure of the conical head. Q235B steel is one of the most commonly used carbon structural steels, has moderate strength and good plasticity and weldability, and is cost-effective; ordinary high manganese steel and Mn20 high manganese steel are selected to respectively manufacture the outer wall and the reinforcement skeleton of the outer layer structure of the conical head, so as to increase the strength of the outer layer and prevent the conical head from being damaged by external collision; through the combination of the three-layer structure, the inner wall of the conical head has high corrosion resistance, and the outer wall has excellent wear resistance and tensile strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A high-strength conical head and a production process flow chart thereof of the present invention; Figure 2 It is a schematic diagram of a high-strength conical head structure of the present invention. DETAILED DESCRIPTION

[0012] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0013] In the description of the present invention, 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, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Embodiment 1: The embodiment of the present invention provides a high-strength conical head and a production process thereof. The production process comprises: selecting materials, selecting S32304 duplex stainless steel to make the inner layer structure of the conical head, selecting Q235B steel to make the middle layer structure of the conical head, selecting ordinary high manganese steel and Mn20 high manganese steel to make the outer layer structure of the conical head, selecting S32304 duplex stainless steel with higher corrosion resistance to make the inner layer structure of the conical head, when the pressure vessel is loaded with corrosive contents, the inner wall of the conical head will not be corroded by the contents, thereby destroying the structural strength of the conical head; selecting Q235B steel to make the conical head The middle structure of the conical head is made of Q235B steel, which is one of the most commonly used carbon structural steels. It has moderate strength, good plasticity and weldability, and is cost-effective. Ordinary high manganese steel and Mn20 high manganese steel are selected to make the outer wall and reinforcement skeleton of the outer structure of the conical head respectively, to increase the strength of the outer layer and prevent the conical head from being damaged by external collision. Ordinary high manganese steel has a low manganese content, generally between 5% and 10%, and is mainly used to manufacture various wear-resistant parts. The manganese content of Mn20 high manganese steel reaches 20%, with excellent wear resistance and tensile strength, and is mainly used to manufacture parts with high wear and high strength requirements. According to the size of the conical head to be manufactured, use professional software such as CAD or Proe to accurately lay out the conical head, and obtain the precise size of each material required through three-dimensional modeling and calculation.

[0016] Embodiment 2: The embodiment of the present invention provides a high-strength conical head and a production process thereof, which is further expanded according to the content of the specific embodiment 1: Rolling cone, S32304 duplex stainless steel and Q235B steel are rolled and welded respectively; Cutting and cutting: S32304 duplex stainless steel and Q235B steel are cut into fan-shaped steel plates of corresponding sizes, and ordinary high manganese steel and Mn20 high manganese steel are cut into strip-shaped steel plates of corresponding sizes; The fan-shaped S32304 duplex stainless steel plate is rolled into a cone shape by a conical plate rolling machine, and the joint seam is welded. The edges are then trimmed and trimmed to eliminate burrs and irregular shapes caused by the rolling process. Finally, key parameters such as roundness, diameter, and wall thickness are measured and verified. The fan-shaped Q235B steel plate is rolled into a cone shape by a cone rolling machine, and the joint seam is welded. The edges are then trimmed and finished to eliminate burrs and irregular shapes caused by the rolling process. Finally, key parameters such as roundness, diameter, and wall thickness are measured and verified. The inner cone made of S32304 duplex stainless steel plate is used to be nested inside the middle cone made of Q235B steel plate, and the strip steel plates cut from ordinary high manganese steel and Mn20 high manganese steel are used for the outside of the conical head.

[0017] Embodiment three: The embodiment of the present invention provides a high-strength conical head and a production process thereof, which is further expanded according to the content of the specific embodiment 2: Splicing, welding the inner layer, middle layer and outer layer structures to each other to form the final shape of the conical head; The cone made of rolled S32304 duplex stainless steel plate is nested in the Q235B steel cone, and the S32304 duplex stainless steel cone and the Q235B steel cone are welded at the openings at both ends of the cone to connect the S32304 duplex stainless steel cone and the Q235B steel cone together; Grinding and trimming the combination of S32304 duplex stainless steel cone and Q235B steel cone; Mn20 high manganese steel bars are welded on the outside of the Q235B steel cone as a reinforcement structure; Ordinary high manganese steel plates are welded between Mn20 high manganese steels to completely cover the outside of the Q235B steel cone, so that the conical head is completely formed; Through the combination of the three-layer structure, the inner wall of the conical head has high corrosion resistance, and the outer wall has excellent wear resistance and tensile strength.

[0018] Embodiment 4: The embodiment of the present invention provides a high-strength conical head and a production process thereof, which is further expanded according to the content of the specific embodiment 3: Cleaning: Use ultrasonic cleaning, electroplating and other processes to treat the surface of the head; use ultrasonic equipment to clean the conical head, and then use a fan to dry the moisture on the surface of the conical head; electroplate the conical head, then clean and dry it to remove burrs and debris generated during the processing, and then electroplate it, which can further improve the corrosion resistance and aesthetics of the conical head.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength conical head and its production process, characterized in that: The following steps are involved: S1. Material selection: S32304 duplex stainless steel is selected to make the inner structure of the conical head, Q235B steel is selected to make the middle structure of the conical head, and ordinary high manganese steel and Mn20 high manganese steel are selected to make the outer structure of the conical head; S2, rolling cone, rolling and welding S32304 duplex stainless steel and Q235B steel respectively; S3, splicing, welding the inner layer, middle layer and outer layer structures to each other to form the final shape of the conical head; S4. Cleaning: Use ultrasonic cleaning, electroplating and other processes to treat the surface of the head.

2. A high-strength conical head and its production process according to claim 1, characterized in that: In step S1, the following steps are included: S11. According to the size of the conical head to be manufactured, use professional software such as CAD or Proe to accurately lay out the conical head, and obtain the precise size of each material required through three-dimensional modeling and calculation.

3. A high-strength conical head and its production process according to claim 1, characterized in that: In step S2, rolling and welding the S32304 duplex stainless steel and Q235B steel separately includes the following steps: S21, blanking and cutting, cutting S32304 duplex stainless steel and Q235B steel into fan-shaped steel plates of corresponding sizes, and cutting ordinary high manganese steel and Mn20 high manganese steel into strip steel plates of corresponding sizes; S22, roll the fan-shaped S32304 duplex stainless steel plate into a cone shape by a cone rolling machine, weld the joint seam, and then trim and trim the edge to eliminate burrs and irregular shapes caused by the rolling process. Finally, measure and verify key parameters such as roundness, diameter, wall thickness, etc. S23. The fan-shaped Q235B steel plate is rolled into a cone shape by a cone rolling machine, and the connecting seam is welded. The edges are then trimmed and finished to eliminate burrs and irregular shapes caused by the rolling process. Finally, key parameters such as roundness, diameter, and wall thickness are measured and verified.

4. A high-strength conical head and its production process according to claim 1, characterized in that: In step S3, the following steps are included: S31, nesting the cone made of S32304 duplex stainless steel plate into the Q235B steel cone, welding the S32304 duplex stainless steel cone and the Q235B steel cone at the openings at both ends of the cone, so that the S32304 duplex stainless steel cone and the Q235B steel cone are connected together; S32. Grind and trim the combination of the S32304 duplex stainless steel cone and the Q235B steel cone; S33, weld Mn20 high manganese steel bars on the outside of the Q235B steel cone as a reinforcement structure; S34. Ordinary high manganese steel plates are welded between Mn20 high manganese steels to completely cover the outside of the Q235B steel cone, so that the conical head is fully formed.

5. A high-strength conical head and its production process according to claim 1, characterized in that: In step S4, the following steps are included: S41. Use ultrasonic equipment to clean the conical head, and then use a fan to dry the moisture on the surface of the conical head; S42, electroplating the conical head, and then cleaning and drying it.

Images