Hot rolling energy-saving heater for silver-phosphorus-copper ultrathin strip

Abstract

The utility model discloses a hot-rolling energy-saving heater for a silver-phosphorus-copper ultrathin belt, and belongs to the technical field of brazing filler metal processing equipment. Comprising a hot air box, a hot air conveying pipeline, a heating pipe, a mesh pipe and an air return pipeline, the lower end of the hot air conveying pipeline communicates with the hot air box, the heating pipe is transversely arranged at the upper end of the hot air conveying pipeline, and the middle of the bottom of the heating pipe communicates with the hot air conveying pipeline; a feeding port and a discharging port are formed in the two ends of the heating pipe in the length direction respectively, the mesh pipe is arranged in the hot air conveying pipeline and extends from the feeding port to the discharging port, the upper side face of the heating pipe extends upwards to form an air return port, the upper end of the air return pipeline is communicated with the air return port, and the lower end of the air return pipeline is communicated with the lower section position of the hot air conveying pipeline. The device has the advantages that the silver-phosphorus-copper brazing filler metal can be uniformly heated, so that the plasticity can be improved, and the thickness requirement and the precision requirement of a hot-rolled sheet can be favorably realized; hot air can be recycled, energy consumption is reduced, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solder processing equipment, and in particular relates to a hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strips. Background Art

[0002] Silver-phosphorus copper brazing filler metal is a multi-purpose welding material based on copper with the addition of elements such as silver and phosphorus. It has a low melting point, good fluidity, high welding strength and excellent corrosion resistance. It can be used to braze ferrous and non-ferrous metals except aluminum, magnesium and other low-melting-point metals. It is widely used in refrigeration, instrumentation, medical equipment, chemical industry and other industries.

[0003] With the development of science and technology, many fields have put forward higher requirements on the variety and performance of brazing materials, and materials with excellent comprehensive performance are urgently needed. The performance of brazing materials affects both the process performance of brazing and the performance of brazing joints to a large extent. The preparation method of silver-phosphorus copper brazing material is to first hot-extrude the silver-phosphorus copper alloy ingot into a semi-finished welding rod of a certain specification, and then use a drawing device to pull the semi-finished welding rod into products of required specifications, such as welding wire, welding ring, welding sheet, thin strip, etc. With the continuous advancement of industry manufacturing technology, in order to meet the requirements of micro-assembly, the existing thin strip brazing materials have thinner thickness requirements and higher precision requirements, and room temperature rolling can no longer meet production needs. Hot rolling is relative to cold rolling. During hot rolling, the metal has high plasticity and low deformation resistance, which can improve the processing performance of silver-phosphorus copper brazing materials. At present, the traditional hot rolling heater adopts the method of electric heating wire heating, which has high energy consumption and uneven heating, making it difficult to ensure the temperature of silver-phosphorus copper brazing material, resulting in a decrease in material plasticity, difficulty in meeting thickness requirements, and high scrap rate.

[0004] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0005] The utility model aims to provide an energy-saving hot-rolling heater for silver-phosphorus-copper ultra-thin strips, which has a simple and reasonable structure, uniform heating and low energy consumption.

[0006] The purpose of the utility model is achieved in this way. A hot-rolled energy-saving heater for silver-phosphorus copper ultra-thin strips comprises: a hot air box, a hot air delivery pipe, a heating pipe, a mesh pipe and a return air pipe. The lower end of the hot air delivery pipe is connected to the hot air box, the heating pipe is transversely arranged at the upper end of the hot air delivery pipe and is connected to the hot air delivery pipe in the middle of the bottom, the heating pipe forms a feed inlet and a discharge port at both ends in the length direction, the mesh pipe is arranged in the hot air delivery pipe, extending from the feed inlet to the discharge port, the heating pipe extends upward on the upper side to form a return air port, the return air port is arranged at intervals on one side of the hot air delivery pipe, and the upper end is connected to the return air port, and the lower end is connected to the lower section of the hot air delivery pipe.

[0007] In a specific embodiment of the present invention, a plurality of mesh holes are arranged at intervals on the side wall of the mesh tube.

[0008] In another specific embodiment of the present invention, it also includes a wind shield plate, which is horizontally arranged in the heating pipe, located below the mesh pipe and spaced apart from the upper end of the hot air conveying pipe.

[0009] In yet another specific embodiment of the present invention, the mesh tube and the heating tube are coaxially arranged.

[0010] In yet another specific embodiment of the present invention, the outer walls of the hot air delivery duct and the return air duct are coated with a thermal insulation layer.

[0011] In another specific embodiment of the present invention, the return air port is formed in the middle of the upper side of the heating tube.

[0012] In a further specific embodiment of the present invention, the return air duct forms an upper bending section at the top and a lower bending section at the bottom, the upper bending section is connected to the return air port of the heating pipe, and the lower bending section is connected to the hot air delivery duct.

[0013] Due to the adoption of the above structure, the utility model has the following beneficial effects compared with the prior art: a mesh tube and a wind shield are arranged in the heating tube, so that the hot air can be dispersed and the silver-phosphorus-copper brazing material can be heated evenly, so that the silver-phosphorus-copper brazing material is heated evenly, thereby improving the plasticity, which is beneficial to achieving the thickness requirements and precision requirements of the hot-rolled thin sheet and reducing the scrap rate; a return air duct is added to recycle the hot air, reduce energy consumption and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1. hot air box; 2. hot air delivery duct; 3. heating pipe, 31. feed port, 32. discharge port, 33. return air port; 4. mesh tube, 41. mesh; 5. return air duct, 51. upper bending section, 52. lower bending section; 6. wind shield; 7. silver-phosphorus copper brazing filler metal. DETAILED DESCRIPTION

[0016] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0017] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are referring to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solutions provided by the present utility model.

[0018] See also Figure 1The utility model relates to an energy-saving heater for hot rolling of silver-phosphorus copper ultra-thin strips, comprising a hot air box 1, a hot air delivery pipe 2, a heating pipe 3, a mesh pipe 4 and a return air pipe 5. The lower end of the hot air delivery pipe 2 is connected to the air outlet of the hot air box 1. The heating pipe 3 is arranged transversely at the upper end of the hot air delivery pipe 2 and is connected to the hot air delivery pipe 2 in the middle of the bottom. The heating pipe 3 forms a feed port 31 and a discharge port 32 at both ends in the length direction, respectively, and the mesh pipe 4 is arranged in the hot air delivery pipe 2, extending from the feed port 31 to the discharge port 32. Preferably, the mesh pipe 4 and the heating pipe 3 are coaxially arranged, and the feed port 31 and the discharge port 32 are formed in the middle position of the two end faces of the heating pipe 3. A plurality of mesh holes 41 are arranged at intervals on the side wall of the mesh pipe 4. The heating tube 3 is provided with a return air port 33 on the upper side, preferably in the middle, extending upward. The return air duct 5 is arranged at intervals on one side of the hot air delivery duct 2. The return air duct 5 forms an upper bending section 51 at the top and a lower bending section 52 at the bottom. The upper bending section 51 is vertically connected to the return air port 33 of the heating tube 3, and the lower bending section 52 is vertically connected to the lower section of the hot air delivery duct 2. The silver-phosphorus copper brazing material 7 enters the heating tube 3 through the feed port 31 and is inserted into the mesh tube 4. The hot air generated by the hot air box 1 enters the heating tube 3 through the hot air delivery duct 2, and then enters the mesh tube 4 through the mesh 41 to heat the silver-phosphorus copper brazing material 7. The design of the mesh tube 4 can disperse the hot air, so that the silver-phosphorus copper brazing material 7 is heated evenly, improves the plasticity, and is conducive to meeting the thickness requirements and precision requirements when hot-rolled into thin strips. The heated silver-phosphorus copper brazing material 7 is led out from the discharge port 32 and enters the subsequent hot rolling process. The hot air in the heating pipe 3 will enter the return air duct 5 through the return air port 33, and finally return to the hot air delivery pipe 2, and enter the heating pipe 3 again, forming a cycle, thereby saving energy and cost. The outer walls of the hot air delivery pipe 2 and the return air duct 5 are coated with an insulation layer, which further saves energy.

[0019] Furthermore, the present embodiment also includes a wind shield plate 6, which is horizontally arranged in the heating tube 3, located below the mesh tube 4 and spaced apart from the upper end of the hot air delivery pipe 2, and can separate the hot air so that the hot air does not directly rush into the mesh tube 4, thereby dispersing the heat and making the hot air uniform.

Claims

1. A hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip, characterized in that: include: A hot air box (1), a hot air delivery pipe (2), a heating pipe (3), a mesh pipe (4) and a return air pipe (5); the lower end of the hot air delivery pipe (2) is connected to the hot air box (1); the heating pipe (3) is arranged transversely at the upper end of the hot air delivery pipe (2) and is connected to the hot air delivery pipe (2) in the middle of the bottom; the heating pipe (3) is formed with a feed port (31) and a discharge port (32) at both ends in the length direction; the mesh pipe (4) is arranged in the hot air delivery pipe (2) and extends from the feed port (31) to the discharge port (32); the heating pipe (3) is extended upward on the upper side to form a return air port (33); the return air pipe (5) is arranged at intervals on one side of the hot air delivery pipe (2); the upper end is connected to the return air port (33) and the lower end is connected to the lower section of the hot air delivery pipe (2).

2. The hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip according to claim 1, characterized in that: A plurality of mesh holes (41) are arranged at intervals on the side wall of the mesh tube (4).

3. The hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip according to claim 1, characterized in that: It also includes a windshield (6), which is horizontally arranged in the heating tube (3), located below the mesh tube (4) and spaced apart from the upper end of the hot air delivery pipe (2).

4. The hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip according to claim 1, characterized in that: The mesh tube (4) and the heating tube (3) are coaxially arranged.

5. The hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip according to claim 1, characterized in that: The outer walls of the hot air delivery duct (2) and the return air duct (5) are coated with a thermal insulation layer.

6. The hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip according to claim 1, characterized in that: The return air port (33) is formed in the middle of the upper side of the heating tube (3).

7. The hot-rolled energy-saving heater for silver-phosphorus-copper ultra-thin strip according to claim 1, characterized in that: The return air duct (5) forms an upper bending section (51) at the top and a lower bending section (52) at the bottom; the upper bending section (51) is connected to the return air port (33) of the heating pipe (3), and the lower bending section (52) is connected to the hot air delivery duct (2).

Images