Zinc alloy welded pipe

Abstract

The utility model provides a kind of zinc alloy welded pipe, it is related to zinc alloy product technical field. Including zinc alloy pipe body, the zinc alloy pipe body is formed by cold working plastic forming mode;The inner side of the zinc alloy pipe body is provided with the arc-shaped groove of dense arrangement, to make in the zinc alloy pipe body on it is convenient to form and only one weld. By the present scheme to reduce the cost of zinc alloy product and weld quantity.

Description

Technical Field

[0001] This utility model relates to the technical field of zinc alloy products, and more specifically, to a zinc alloy welded pipe. Background Technology

[0002] Zinc alloys are non-ferrous alloy materials produced by adding other elements to zinc as a base metal. Among non-ferrous metals, zinc ranks third in terms of mineral reserves, production, and consumption, after aluminum and copper. Zinc alloys possess advantages such as low melting point, good casting performance, excellent mechanical properties, short production process, low energy consumption, and low raw material prices, making them a current research hotspot both domestically and internationally, and hailed as a new material for the 21st century. In fact, zinc alloy pipes and fittings can not only replace copper alloys and stainless steel in a wide range of applications including sanitary ware, mechanical connections, electronic communications, home appliances, construction, stationery, plumbing, automobiles, hardware, and decoration, but also, considering their performance characteristics, their potential applications are constantly being explored.

[0003] Because zinc and most zinc alloys have a close-packed hexagonal (hcp) crystal structure with few slip systems, only the basal slip system can be activated during room temperature plastic deformation, resulting in high deformation resistance, poor fluidity and weldability, making plastic forming quite difficult. In recent years, zinc and zinc alloy plates, bars, and wires can be produced through rolling, heated extrusion, and drawing, and are widely used in battery casings, anode plates, printing plates, computer and printer parts, communications, bridges, highway guardrails, shipbuilding, and other technical fields. Currently, in the bathroom fixtures industry, zinc alloys, with their low melting point, are easily melted, allowing for the one-piece molding of various fixtures using molds and machine tools. Compared to copper and stainless steel bathroom products, zinc alloys have a significant competitive advantage in product style and eliminate the need for welding and machining, reducing many complex manufacturing processes. Although the cost of molds is higher, the lower price of zinc alloy material allows companies to offset the mold costs through machine tool development, casting, and product volume. In addition, the manufacturing cost of a single zinc alloy faucet handle is half that of a copper faucet handle, which has led to the widespread use of zinc alloy materials in bathroom products such as towel racks.

[0004] However, currently, the only way to achieve one-piece molding of zinc alloy pipes is through casting. This is because zinc alloys are highly hard, making them prone to breakage during the bending process after being processed into sheets through extrusion or stretching. Casting, however, results in significant waste of zinc alloy material, increasing material costs. To reduce this waste, current solutions involve welding multiple equally spaced arc-shaped zinc alloy tubes along their circumference. This results in a smaller bending angle for each tube, preventing breakage during bending. While this reduces material usage, it also creates more weld seams, making subsequent surface treatment more difficult and increasing costs. Utility Model Content

[0005] This utility model discloses a zinc alloy welded pipe, which aims to solve the problems of large material waste, high cost, and difficulty in appearance treatment caused by multiple welds in the existing zinc alloy pipe manufacturing process.

[0006] The present invention adopts the following solution: A zinc alloy welded pipe includes a zinc alloy pipe body, which is formed by cold working plastic forming; the inner side of the zinc alloy pipe body is provided with densely arranged arc-shaped grooves so as to facilitate the formation of one and only one weld seam on the zinc alloy pipe body.

[0007] Furthermore, the spacing between adjacent arc-shaped grooves is 0.1mm to 2mm, and the depth is 0.1mm to 1.5mm.

[0008] Furthermore, the zinc alloy tube is a round tube, a square tube, or an elliptical tube.

[0009] Beneficial effects: This solution forms zinc alloy tubes through cold forming, including existing stamping and rolling processes. Combined with the arc-shaped groove structure design, it helps to prevent breakage caused by inner surface compression during the rolling process, thus forming a zinc alloy welded tube with only one weld seam, making the zinc alloy welded tube more suitable for surface treatment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a zinc alloy welded pipe structure according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of a zinc alloy welded pipe according to an embodiment of the present invention; Icons: 1. Zinc alloy pipe body; 2. Arc-shaped groove; 3. Weld seam. Detailed Implementation

[0011] Combination Figure 1As shown, this embodiment provides a zinc alloy welded pipe, including a zinc alloy pipe body 1 formed by cold working plastic forming, and a weld seam 3 is formed on the zinc alloy pipe body 1.

[0012] In this embodiment, the zinc alloy tube 1 can be a round tube, a square tube, or a tube of other shapes. The zinc alloy tube 1 is formed by cold working plastic forming, which makes the forming cost of the zinc alloy tube 1 lower and reduces waste.

[0013] Combination Figure 1 As shown, the zinc alloy tube 1 can be formed by rolling zinc alloy strips, and the rolling process can refer to existing stainless steel rolling processes. In this embodiment, the zinc alloy tube 1 is formed by rolling so that the tube has only one weld seam, which can maximize the surface quality. When the zinc alloy tube 1 is formed by rolling, a pre-set hole shape is formed using a forming mold. The zinc alloy strip is suitable for being bent and rolled into the corresponding shape of the zinc alloy tube 1 after passing through the forming mold, and then welded, so that the zinc alloy tube 1 has only one weld seam 3. Specifically, the zinc alloy strip can be rolled into a coil, and one end of it is pulled to a tube-making equipment. The tube-making equipment includes a guiding device, several forming molds, welding equipment, cutting equipment, and a blanking assembly. Several sets of forming molds are provided to gradually roll the zinc alloy strip into the required zinc alloy parts. The several forming molds are arranged in a straight line, and the hole shape formed by the forming molds gradually tends to the pre-set shape along the direction of movement of the zinc alloy strip, so that the zinc alloy strip can be gradually rolled into the required tube shape. The tubular shape here can be round, elliptical, square, etc. The zinc alloy strip is pressed from the outside by a forming mold to roll it inward into a tubular shape. The forming mold can refer to existing flat roller molds and vertical roller molds, using four or more flat roller molds and vertical roller molds to form the required hole shape.

[0014] In this embodiment, the composition of the zinc alloy tube 1 can be referenced from CN102277517A. The zinc alloy tube 1 has better ductility, but is not limited thereto.

[0015] Combination Figure 2 As shown, the inner surface of the zinc alloy tube 1 is provided with densely arranged arc-shaped grooves 2. The arc-shaped grooves 2 can be formed on the zinc alloy sheet or strip first, and then rolled up to be located on the inner surface of the zinc alloy tube 1. The spacing between adjacent arc-shaped grooves 2 is 0.1mm to 2mm, and the depth is 0.1mm to 1.5mm. By providing these arc-shaped grooves 2, the zinc alloy tube 1 can absorb part of the deformation force when subjected to lateral pressure, reducing the risk of deformation.

[0016] A zinc alloy tube body 1 is welded to form a weld seam 3. The welding method can be laser welding, brazing, or TIG welding. Taking TIG welding as an example, since zinc is used for oxidation and evaporation, tungsten inert gas (TIG) welding can be used; when using laser welding, a pulse width of 8 Hz, a pulse duration of 8 ms, an output power of 400 W, and a gas flow rate of 15... The welding speed is 400 When using induction brazing, the current is 300A, the frequency is 70kHz, and the heating time is the time it takes for the brazing filler metal to completely melt.

[0017] The zinc alloy welded pipes produced by this method can be made into faucet bends, bodies, etc., and can also be applied in other fields. They have low production costs and high strength.

[0018] It should be understood that the above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0019] The accompanying drawings used in the above description of the embodiments only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. A zinc alloy welded pipe, characterized in that, The device includes a zinc alloy tube body, which is formed by cold working plastic forming. The inner surface of the zinc alloy tube body is provided with densely arranged arc-shaped grooves to facilitate the formation of one and only one weld seam on the zinc alloy tube body.

2. The zinc alloy welded pipe according to claim 1, characterized in that, The spacing between adjacent arc-shaped grooves is 0.1mm to 2mm, and the depth is 0.1mm to 1.5mm.

3. The zinc alloy welded pipe according to claim 1, characterized in that, The zinc alloy tube is round, square, or elliptical.

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