Manufacturing process of stainless steel right-angle square tube

Abstract

The invention relates to the technical field of stainless steel pipe manufacturing, and particularly discloses a stainless steel right-angle square pipe manufacturing process which comprises the following steps: S1, pipe coiling: a stainless steel plate is fed into a pipe pressing machine to be extruded, so that the two side surfaces of the stainless steel plate are in contact, and a stainless steel coiled pipe is obtained; s2, welding forming is conducted, specifically, the stainless steel coil pipe is fed into an argon arc welding machine for welding treatment, welding sewing is conducted on connecting gaps of the stainless steel coil pipe, and a semi-finished stainless steel round pipe is obtained; s3, high-frequency annealing is conducted, specifically, the semi-finished stainless steel round pipe is fed into a high-frequency annealing machine to be subjected to high-frequency annealing treatment, and the stainless steel plate is heated to different temperatures according to the material of the stainless steel plate; and S4, forming is conducted, specifically, the semi-finished stainless steel round pipe is fed into a forming mold to be subjected to die-casting forming treatment, the forming mold conducts die-casting on the semi-finished stainless steel round pipe from four directions to form a square shape, and the stainless steel right-angle square pipe is obtained. The manufactured stainless steel right-angle square tube is flat in surface, attractive in appearance and capable of meeting the use requirements of users.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel pipe manufacturing, and in particular to a stainless steel right-angle square pipe manufacturing process. Background Art

[0002] Stainless steel pipe is a hollow long steel strip with a wide range of applications. It is widely used as a pipe for conveying fluids. In addition, it is light in weight when bending and torsional strength are the same, so it is also widely used in the manufacture of mechanical parts and engineering structures. It has a wide range of applications. Stainless steel pipes can be divided into round pipes, square pipes, etc. according to their shapes. The cross section of round pipes is circular, and the cross section of square pipes is rectangular (i.e. rectangular) or square. Stainless steel pipes are usually made of stainless steel plates for tube rolling and welding. The processing technology includes pickling, passivation, steel plate stripping, welding, polishing and shaping, cutting, etc. When using this process to process stainless steel pipes, it is necessary to use a tube rolling mechanism to roll and weld the plate. When the processed stainless steel pipe reaches a certain length, stop making the pipe and use the cutting machine to cut the pipe in sections. However, when processing square tubes with the existing stainless steel tube processing technology, the surface of the processed product usually has an arc surface and an uneven surface, which makes it impossible for the inner angles to form right angles. In the later stage, each top angle needs to be polished to form a right angle, that is, it is impossible to directly produce a right-angle square tube. It can be seen that there is no process on the market that can directly process right-angle square tubes, which is difficult to meet user needs. Based on this, this scheme proposes a stainless steel right-angle square tube production process. Summary of the invention

[0003] The technical problem to be solved by the present invention is that, in view of the defects existing in the above-mentioned prior art, a stainless steel right-angle square tube manufacturing process is provided. The stainless steel right-angle square tube manufactured by the present invention has a smooth surface and beautiful appearance, can be adapted to various stainless steel accessories, has a high degree of fitting, can meet the needs of users, and does not require grinding treatment in the later stage, thus saving material and labor costs.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A stainless steel right-angle square tube manufacturing process comprises the following steps:

[0006] Step S1, coiling a tube, feeding a stainless steel plate into a tube pressing machine for extrusion, so that two side surfaces of the stainless steel plate are in contact with each other, and obtaining a stainless steel coiled tube;

[0007] Step S2, welding and forming, sending the stainless steel coil into a argon arc welding machine for welding, welding and suturing the connection gaps of the stainless steel coils, and obtaining a semi-finished stainless steel round tube;

[0008] Step S3, high frequency annealing, sending the semi-finished stainless steel round tube into a high frequency annealing machine for high frequency annealing treatment, and heating it to different temperatures according to the material of the stainless steel plate;

[0009] Step S4, forming, sending the semi-finished stainless steel round tube into a forming mold for die-casting, the forming mold die-casts the semi-finished stainless steel round tube into a square from four directions to obtain a stainless steel right-angle square tube;

[0010] Step S5, cooling, the stainless steel right-angle square tube is subjected to water cooling treatment, and water is poured on the surface of the stainless steel right-angle square tube to reduce the temperature to room temperature;

[0011] Step S6, sending the stainless steel right-angle square tube into a cutting machine for cutting processing, and cutting the stainless steel right-angle square tube into stainless steel right-angle square tubes of required sizes according to production requirements.

[0012] Preferably, before step S1, the method further comprises cutting the stainless steel plate into a corresponding width by a cutting machine.

[0013] Preferably, in the step S2, it also includes polishing the weld bead on the semi-finished stainless steel round pipe after welding, and grinding the weld bead to be flat by a water grinder.

[0014] Preferably, in step S3, the high-frequency annealing machine is provided with a high-temperature heating copper ring for the semi-finished stainless steel round tube to pass through, and the high-temperature heating copper ring surrounds the semi-finished stainless steel round tube.

[0015] Preferably, in step S4, the forming die extrude and shape the semi-finished stainless steel round tube, and then straighten it into a right angle, so as to obtain the stainless steel right-angle square tube.

[0016] By adopting the above technical scheme, the present invention provides a stainless steel right-angle square tube manufacturing process. The stainless steel right-angle square tube manufacturing process performs high-frequency annealing treatment before the stainless steel right-angle square tube is formed, so that the stainless steel right-angle square tube is die-casted by a mold under high temperature conditions. Compared with the traditional stainless steel tube manufacturing process, the stainless steel right-angle square tube manufactured by the present invention has a higher surface flatness, is convenient for polishing, and has a beautiful appearance. It can be adapted to various stainless steel accessories, and the accessories have a high degree of fit, which can meet user needs; and no grinding treatment is required in the later stage, saving material and labor costs, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a flow chart of a stainless steel right-angle square tube manufacturing process. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] like Figure 1 As shown in the flowchart of a stainless steel right-angle square tube manufacturing process of the present invention, the stainless steel right-angle square tube manufacturing process includes the following steps: step S1, tube rolling, sending the stainless steel plate into a tube pressing machine for extrusion, so that the two side surfaces of the stainless steel plate are in contact, and a stainless steel tube roll is obtained; step S2, welding and forming, sending the stainless steel tube roll into a argon arc welding machine for welding treatment, welding and suturing the connection gap of the stainless steel coil plate, and obtaining a semi-finished stainless steel round tube; step S3, high-frequency annealing, sending the semi-finished stainless steel round tube into a high-frequency annealing machine for high-frequency annealing treatment, according to The material of the stainless steel plate is heated to different temperatures; step S4, forming, sending the semi-finished stainless steel round tube into a forming mold for die-casting, the forming mold die-casts the semi-finished stainless steel round tube into a square from four directions to obtain a stainless steel right-angle square tube; step S5, cooling, the stainless steel right-angle square tube is subjected to water spraying cooling treatment, water is sprayed on the surface of the stainless steel right-angle square tube to reduce it to room temperature; step S6, sending the stainless steel right-angle square tube into a cutting machine for cutting, and cutting the stainless steel right-angle square tube into stainless steel right-angle square tubes of required sizes according to production requirements.

[0022] Specifically, before step S1, the stainless steel plate is cut into a corresponding width by a shearing machine. It can be understood that after the stainless steel plate is cut into a required width according to production requirements, it is unrolled into the tube pressing machine by a coiler.

[0023] Specifically, in step S2, the weld bead on the semi-finished stainless steel round pipe after welding is polished by a water grinder to be smooth. It can be understood that the argon arc welding machine uses argon as a shielding gas to heat and melt the metal on both sides of the weld through an electric arc to fuse them together.

[0024] Specifically, in step S3, the high-frequency annealing machine is provided with a high-temperature heating copper ring for the semi-finished stainless steel round tube to pass through, and the high-temperature heating copper ring surrounds the semi-finished stainless steel round tube. It can be understood that the high-frequency annealing machine can increase the temperature of the copper ring to a specified temperature in a short time, and through the precise control of factors such as temperature and time, the internal stress of the stainless steel tube can be effectively reduced and the internal structure of the stainless steel tube can be optimized.

[0025] Specifically, in step S4, the forming die extrude and shape the semi-finished stainless steel round tube, and then straighten it into a right angle, so as to obtain the stainless steel right-angle square tube. It can be understood that the stainless steel round tube can be extruded and shaped and straightened under high temperature conditions, and can also be made into the desired right-angle shape by pushing the plunger or slider of the machine; after the extrusion is completed, the stainless steel right-angle square tube is cooled so that it reaches a stable state and ensures its performance and quality.

[0026] It can be understood that the present invention has a reasonable design and a unique structure. Compared with the traditional stainless steel pipe manufacturing process, the stainless steel right-angle square tube produced by the present invention has a higher surface flatness, is convenient for polishing, and has a beautiful appearance. It can be adapted to various stainless steel accessories, and the accessories have a high degree of fit, which can meet the needs of users; and there is no need for grinding treatment in the later stage, which saves material and labor costs and has a lower production cost.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A stainless steel right-angle square tube manufacturing process, characterized in that: The following steps are involved: Step S1, coiling a tube, feeding a stainless steel plate into a tube pressing machine for extrusion, so that two side surfaces of the stainless steel plate are in contact with each other, and obtaining a stainless steel coiled tube; Step S2, welding and forming, sending the stainless steel coil into a argon arc welding machine for welding, welding and suturing the connection gaps of the stainless steel coils, and obtaining a semi-finished stainless steel round tube; Step S3, high frequency annealing, sending the semi-finished stainless steel round tube into a high frequency annealing machine for high frequency annealing treatment, and heating it to different temperatures according to the material of the stainless steel plate; Step S4, forming, sending the semi-finished stainless steel round tube into a forming mold for die-casting, the forming mold die-casts the semi-finished stainless steel round tube into a square from four directions to obtain a stainless steel right-angle square tube; Step S5, cooling, the stainless steel right-angle square tube is subjected to water cooling treatment, and water is poured on the surface of the stainless steel right-angle square tube to cool it to room temperature.

2. The stainless steel right-angle square tube manufacturing process according to claim 1 is characterized in that: The method further includes step S6, wherein the stainless steel right-angle square tube is fed into a cutting machine for cutting, and the stainless steel right-angle square tube is cut into stainless steel right-angle square tubes of required sizes according to production requirements.

3. The stainless steel right-angle square tube manufacturing process according to claim 1 is characterized in that: Before the step S1, the method further includes cutting the stainless steel plate into a corresponding width by a cutting machine.

4. The stainless steel right-angle square tube manufacturing process according to claim 1 is characterized in that: In the step S2, the process also includes polishing the weld bead on the semi-finished stainless steel round pipe after welding, and grinding the weld bead to be smooth by a water grinder.

5. The stainless steel right angle square tube manufacturing process according to claim 1, characterized in that: In the step S3, the high-frequency annealing machine is provided with a high-temperature heating copper ring for the semi-finished stainless steel round tube to pass through, and the high-temperature heating copper ring surrounds the semi-finished stainless steel round tube.

6. The stainless steel right-angle square tube manufacturing process according to claim 1, characterized in that: In the step S4, the forming die extrude and shape the semi-finished stainless steel round tube, and then straighten it into a right angle, so as to obtain the stainless steel right-angle square tube.

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