Welding positioning method for water-cooled pipe

Abstract

The invention discloses a welding positioning method for a water-cooled pipe, which is used for welding a marine storage battery water-cooled pipe comprising a lower fixing assembly, a pull rod and an upper fixing assembly, and comprises the following steps in sequence: cleaning, mounting a positioning tool, welding a workpiece, cleaning after welding and carrying out surface treatment. By adopting a proper welding positioning process method, the welding quality and form and location tolerance requirements of the water-cooled pipe are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of welding processing, and in particular relates to a welding positioning method for a marine battery water cooling pipe. Background Art

[0002] In some equipment with compact space requirements and high power requirements, water cooling devices can quickly remove the ineffective heat generated, thereby ensuring the high-efficiency operation of the equipment. Marine batteries are used as power batteries when the ship is sailing. In order to ensure the battery life and endurance, water cooling is usually used for cooling.

[0003] In order to make more efficient use of the limited space in the battery, the water cooling pipeline is designed in a special shape to adapt to the location of the battery pack.

[0004] The welding quality of the water-cooling tube plays an important role in the performance and life of the battery. Therefore, in order to ensure the welding quality of the workpiece, a welding positioning device and welding process method need to be designed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to ensure the welding quality and shape and position tolerance requirements of the water cooling pipe by adopting appropriate welding positioning tooling and reasonable welding process methods.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a method for welding and positioning a water-cooling pipe, which is used for welding and positioning a marine battery water-cooling pipe including a flat pipe, a copper sleeve and a copper pipe, and the steps are: S1, Cleaning: Before welding, clean the screw holes of the flat tube, copper sleeve and copper tube, the copper scraps in the through holes and the 20mm range around each welding surface; S2, install the positioning tool: fix the stop block on the lower fixed panel to obtain the lower fixed assembly; fix the positioning screws and the positioning sleeve on the upper fixed panel in sequence to obtain the upper fixed assembly; select a pull rod connecting the lower fixed assembly and the upper fixed assembly; S3, workpiece welding: place the flat tube on the lower fixed panel of the lower fixed assembly and fix it with a stop block, insert the copper sleeve into the flat tube and fix it on the upper fixed panel of the upper fixed assembly with a positioning screw, insert one end of the copper tube into the copper sleeve, and insert the other end into the positioning sleeve for fixing, fine-tune the shape and position tolerance of the workpiece, and use a pull rod to fix the lower fixed assembly and the upper fixed assembly to obtain a positioning fixture, first place the positioning fixture sideways and weld the copper tube to the copper sleeve, then place the positioning fixture flat forward and weld multiple copper sleeves in the middle to the flat tube, then raise the right end of the positioning fixture by 15 to 20 mm and weld the left copper sleeve to the flat tube, and finally raise the left end of the positioning fixture by 15 to 20 mm and weld the right copper sleeve to the flat tube; S4, post-welding cleaning: cleaning the weld nodules on the flat tubes after welding; S5, surface treatment: protect the threaded holes of the copper sleeve and the copper tube, and finally perform sandblasting on the workpiece.

[0007] Furthermore, if there is oil stain or other stain in step S1, it needs to be cleaned with gasoline, kerosene or alcohol.

[0008] Furthermore, in the step S3, when welding the left and right copper sleeves, the torch flame is used to heat the weld in the middle direction as much as possible, the flat tube cannot be burned red during the operation, and the operation duration is controlled to be 90 to 150 seconds.

[0009] Furthermore, it was found that the solder at the end of the flat tube melted and repair welding was carried out in time.

[0010] Furthermore, it is ensured that the solder added for welding should be completely melted, filled evenly, and the weld height should not exceed 1.5mm above the surface.

[0011] The beneficial effects of the present invention are as follows: the present invention ensures the welding quality and shape and position tolerance requirements of the water-cooling pipe of a special workpiece by adopting a suitable welding positioning device and a reasonable welding process method. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the two-dimensional structure of the water cooling tube of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the water cooling tube of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning tool of the present invention; Figure 4 It is a schematic diagram of welding positioning of the present invention; Figure 5 The present invention is a flow chart of the welding positioning method of the water cooling pipe.

[0013] The figures are marked as follows: 01—flat tube, 02—copper sleeve, 03—copper tube, 1—lower fixing assembly, 11—lower fixing panel, 12—stop block, 2—pull rod, 3—upper fixing assembly, 31—upper fixing panel, 32—positioning screw, 33—positioning sleeve. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the embodiments of the invention. The following embodiments are used to illustrate the invention but are not used to limit the scope of the invention.

[0015] Reference Figure 1 , Figure 2As shown, the marine battery water cooling tube welded by the present invention is composed of parts such as a flat tube 01, a copper sleeve 02 and a copper tube 03. The copper sleeve 02 is connected to the upper flat tube 01 in parallel, and the copper sleeves 02 at the head and tail ends lead out the copper tube 03. In addition to ensuring the welding quality during welding, the shape and position tolerances between the components must also be strictly controlled.

[0016] Reference Figure 3 As shown, the positioning tool used for welding of the present invention includes a lower fixing component 1, a pull rod 2 and an upper fixing component 3, wherein the lower fixing component 1 includes a lower fixing panel 11 and a stop block 12, and the upper fixing component 3 includes an upper fixing panel 31, a positioning screw 32 and a positioning sleeve 33.

[0017] Reference Figure 4 , Figure 5 As shown, a method for welding and positioning a water cooling pipe disclosed in an embodiment of the present invention comprises the following steps: S1 cleaning; S2 installing a positioning tool; S3 welding the workpiece; S4 cleaning after welding; and S5 surface treatment. Figure 2 , Figure 3 The specific steps are described in detail through the embodiments of the present invention as follows.

[0018] S1, cleaning.

[0019] Before welding, clean the screw holes, copper scraps in the through holes and the 20mm range around each welding surface of the flat tube 01, copper sleeve 02 and copper tube 03. If there is oil or other stains, use gasoline, kerosene or alcohol to clean.

[0020] S2, install the positioning tooling.

[0021] Fix the stop block 12 on the lower fixed panel 11 to obtain the lower fixed component 1; fix the positioning screw 32 and the positioning sleeve 33 on the upper fixed panel 31 in sequence to obtain the upper fixed component 3; select the pull rod 2 connecting the lower fixed component 1 and the upper fixed component 3 to obtain the three major parts of the positioning tooling.

[0022] S3, workpiece welding.

[0023] Place the flat tube 01 on the lower fixed panel 11 of the lower fixed component 1 and fix it with the stop block 12, insert the copper sleeve 02 into the flat tube 01 and fix it on the upper fixed panel 31 of the upper fixed component 3 with the positioning screw 32, insert one end of the copper tube 03 into the copper sleeve 02, and insert the other end into the positioning sleeve 33 to fix it, and after fine-tuning the shape and position tolerance of the workpiece, use the pull rod 2 to fix the lower fixed component 1 and the upper fixed component 3 to assemble the positioning tooling.

[0024] First, weld the copper tube 03 and the copper sleeve 02: place the positioning tool sideways and weld the copper tube 03 to the copper sleeve 02. Then weld the copper sleeve 02 and the flat tube 01: place the positioning tool horizontally, weld the four middle copper sleeves 02 to the flat tube 01, then raise the right end of the positioning tool by 15 to 20 mm and weld the left copper sleeve 02 to the flat tube 01, and finally raise the left end of the positioning tool by 15 to 20 mm and weld the right copper sleeve 02 to the flat tube 01.

[0025] When welding the copper sleeves 02 on the left and right sides, the torch flame should heat the weld towards the middle as much as possible. The flat tube 01 should not be burned red during the operation. The operation duration should be controlled within 90 to 150 seconds. If the solder at the end of the flat tube 01 is found to be melted, repair welding should be performed in time. The solder added during welding should be completely melted and filled evenly, and the weld height should not exceed 1.5mm from the surface.

[0026] S4, post-weld cleaning.

[0027] Clean the weld nodules on the flat tube 01 after welding.

[0028] S5, surface treatment.

[0029] The threaded holes of the copper sleeve 02 and the copper tube 03 are protected, and finally the workpiece is sandblasted.

[0030] As described above, the present invention ensures the welding quality and shape and position tolerance requirements of the water-cooling pipe of a special workpiece by adopting a suitable welding positioning device and a reasonable welding process method.

[0031] The above embodiments are only illustrative of the principles and effects of the present invention, as well as some embodiments of its application. For those skilled in the art, several modifications and improvements may be made without departing from the creative concept of the present invention, and all of these belong to the protection scope of the present invention.

Claims

1. A method for welding and positioning a water-cooling pipe, used for a water-cooling pipe comprising a flat pipe (01), a copper sleeve (02) and a copper pipe (03); characterized in that: Steps S1, clean the screw holes, through holes and welding surfaces of the flat tube (01), copper sleeve (02) and copper tube (03); S2, fixing the stop block (12) on the lower fixed panel (11) to obtain a lower fixed assembly (1); fixing the positioning screw (32) and the positioning sleeve (33) on the upper fixed panel (31) in sequence to obtain an upper fixed assembly (3); S3, placing the flat tube (01) on the lower fixed panel (11) and fixing the stopper with a stopper (12), inserting the copper sleeve (02) into the flat tube (01) and fixing it on the upper fixed panel (31) with a positioning screw (32), inserting one end of the copper tube (03) into the copper sleeve (02) and the other end into the positioning sleeve (33), fixing the lower fixed component (1) and the upper fixed component (3) with a pull rod (2), first placing the positioning tool sideways and welding the copper tube (03) to the copper sleeve (02), then placing the positioning tool forward and flat and welding the middle copper sleeves (02) to the flat tube (01), then raising the right end of the positioning tool by 15 to 20 mm and welding the left copper sleeve (02) to the flat tube (01), and finally raising the left end of the positioning tool by 15 to 20 mm and welding the right copper sleeve (02) to the flat tube (01); S4, cleaning the weld nodules on the flat tube (01); S5, the threaded hole of the copper sleeve (02) and the copper tube (03) are protected, and finally sandblasted.

2. A method for welding and positioning a water cooling pipe according to claim 1, characterized in that: In the step S1, gasoline, kerosene or alcohol is used to clean the existing oil stains or stains.

3. A method for welding and positioning a water cooling pipe according to claim 1 or 2, characterized in that: When welding the left and right copper sleeves (02) in step S3, the torch flame is directed as far as possible to heat the weld in the middle, avoiding the flat tube (01), for 90 to 150 seconds.

4. A method for welding and positioning a water cooling pipe according to claim 3, characterized in that: If the solder at the end of the flat tube (01) is found to be melted, repair welding should be performed in time.

5. The method for welding and positioning a water cooling pipe according to claim 3, characterized in that: Ensure that the solder is completely melted, filled evenly, and the weld height does not exceed 1.5mm from the surface.

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