Manufacturing process of marine heavy-duty diesel engine expansion water tank

Abstract

The application relates to a manufacturing process of a marine heavy diesel engine expansion water tank and belongs to the sheet metal manufacturing field. The marine heavy diesel engine expansion water tank comprises a bent plate, a water tank side plate, a water tank cover plate, a positioning plate, inner reinforcing ribs, outer reinforcing ribs and a limiting plate. The water tank cover plate and the water tank side plate form a tank body structure, and the tank body structure is arranged at the top of the bent plate. One outer reinforcing rib is arranged on each side of the bottom of the bent plate. A plurality of inner reinforcing ribs are arranged between the two outer reinforcing ribs. The two outer reinforcing ribs and the plurality of inner reinforcing ribs are connected with the positioning plate. The limiting plate is arranged between the outer reinforcing rib and the adjacent inner reinforcing rib. The limiting plate is in contact with the positioning plate. The two outer reinforcing ribs and the plurality of inner reinforcing ribs are arranged at equal intervals.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of marine heavy diesel engine expansion water tank manufacturing process, belong to sheet metal manufacturing field. BACKGROUND

[0002] Diesel engine expansion water tank is an important component on the water cooling circuit of diesel engine, and the expansion water tank of diesel engine needs to be welded in processing.The existing general manufacturing process has the problems of difficult welding deformation control, poor consistency of installation size of batch production products, and a large number of rework and scrap of water tank due to the inability to control welding deformation. SUMMARY

[0003] The present application aims to overcome the above-mentioned deficiencies in the prior art, and provide a marine heavy diesel engine expansion water tank manufacturing process with reasonable structure design.

[0004] The technical scheme adopted by the present application to solve the above problems is: the marine heavy diesel engine expansion water tank manufacturing process has the following structural characteristics: the marine heavy diesel engine expansion water tank includes a bent plate, a water tank side plate, a water tank cover plate, a positioning plate, inner reinforcing ribs, outer reinforcing ribs and a limiting plate, the water tank cover plate and the water tank side plate form a tank structure, and the tank structure is arranged at the top of the bent plate, one outer reinforcing rib is arranged on each side of the bottom of the bent plate, a plurality of inner reinforcing ribs are arranged between the two outer reinforcing ribs, the two outer reinforcing ribs and the plurality of inner reinforcing ribs are connected with the positioning plate, a limiting plate is arranged between the outer reinforcing rib and the adjacent inner reinforcing rib, and the limiting plate is in contact with the positioning plate.

[0005] The marine heavy diesel engine expansion water tank manufacturing process includes the following steps:

[0006] A. When the bent plate and the positioning plate are laser cut, the X-axis direction is adjusted to increase by 1.5 mm according to the welding deformation, and the amount of increase between adjacent through holes is consistent, so as to ensure that the hole distance of the through hole caused by welding deformation and shrinkage affects the installation and use of the water tank;

[0007] B. When the water tank side plate is laser cut, the width is adjusted to increase by 1.5 mm from both ends to the middle in a gradual manner according to the welding deformation, and the amount of increase is used to cause the water tank cover plate to produce reverse deformation during riveting, so as to ensure that the size caused by welding deformation and shrinkage is unqualified;

[0008] C. When the inner reinforcing rib and the outer reinforcing rib are laser cut, the top width is adjusted to increase by 1 mm in a gradual manner according to the welding deformation, and the amount of increase is used to cause the bent plate to produce reverse deformation during riveting, so as to ensure that the size caused by welding deformation and shrinkage is unqualified;

[0009] D, the bending plate, water tank cover plate is bent according to the size of the matching piece adjustment bending linearity and angle guarantee in the riveting time gap is less than 0.5mm.

[0010] Further, two outer reinforcing ribs are arranged at equal intervals with the plurality of inner reinforcing ribs.

[0011] Further, the bending plate and the outer reinforcing rib, the bending plate and the inner reinforcing rib, the positioning plate and the outer reinforcing rib, the positioning plate and the inner reinforcing rib, and the inner reinforcing rib and the outer reinforcing rib and the limiting plate are fixed through the clamping block and the clamping groove.

[0012] Further, the bending plate and the positioning plate are provided with through holes.

[0013] Further, it further comprises E, after welding, the weld toe position is welded by argon arc welding again, and the weld is remelted, so that the weld stress is eliminated, the deformation of the whole structure is reduced, and the service life of the weld is improved.

[0014] Compared with the prior art, the manufacturing process of the marine heavy diesel engine expansion water tank can simplify the production steps, reduce the shaping time, the product shape and the installation size consistency is good, and the stress concentration is reduced to a certain extent, and the fatigue life of the product is improved.

[0015] The manufacturing process of the marine heavy diesel engine expansion water tank improves the blanking precision, improves the assembly precision, reasonably presets the reverse deformation amount and compensates the welding shrinkage amount in advance when blanking, and fully uses the welding bead remelting technology to eliminate the welding stress, thereby avoiding the post-weld shaping, and achieving good product consistency.

[0016] The manufacturing process of the marine heavy diesel engine expansion water tank solves the problem of a large number of rework and scrap of the water tank caused by the uncontrollable welding deformation in the traditional process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic of the marine heavy diesel engine expansion water tank of the embodiment of the present application Figure 1 .

[0018] Figure 2 is a three-dimensional structure schematic of the marine heavy diesel engine expansion water tank of the embodiment of the present application Figure 2 .

[0019] Figure 3 is an expanded schematic view of the water tank cover plate of the embodiment of the present application.

[0020] Figure 4 is an expanded schematic view of the water tank side plate of the embodiment of the present application.

[0021] Explanation of symbols: bent plate 1, water tank side plate 2, water tank cover plate 3, positioning plate 4, inner reinforcing rib 5, outer reinforcing rib 6, limiting plate 7, clamping block 8, clamping groove 9, through hole 10. DETAILED DESCRIPTION

[0022] The application will be further described below in detail with reference to the accompanying drawings and by embodiments, which are illustrative of the application and do not limit the application to the following embodiments.

[0023] EMBODIMENT

[0024] Reference Figures 1 to 4 It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to be illustrative of the content disclosed in the specification and to be understood and read by those skilled in the art, and are not intended to limit the defined conditions under which the present application can be implemented, and therefore do not have technical significance. Any modification of structure, change of proportional relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, shall still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are merely for the convenience of clear description, and are not intended to limit the scope of the present application, and the change or adjustment of relative relationship without substantial change of technical content is also considered as the scope of the present application.

[0025] The manufacturing process of the marine heavy-duty diesel engine expansion water tank in the embodiment is characterized in that the marine heavy-duty diesel engine expansion water tank comprises a bent plate 1, a water tank side plate 2, a water tank cover plate 3, a positioning plate 4, an inner reinforcing rib 5, an outer reinforcing rib 6 and a limiting plate 7, and the bent plate 1 and the positioning plate 4 are both provided with a through hole 10.

[0026] The water tank cover plate 3 and the water tank side plate 2 in the embodiment form a tank structure, and the tank structure is arranged at the top of the bent plate 1. The bent plate 1 is provided with one outer reinforcing rib 6 on each side at the bottom. A plurality of inner reinforcing ribs 5 are arranged between the two outer reinforcing ribs 6. The two outer reinforcing ribs 6 and the plurality of inner reinforcing ribs 5 are connected with the positioning plate 4. The two outer reinforcing ribs 6 and the plurality of inner reinforcing ribs 5 are arranged at equal intervals. The limiting plate 7 is arranged between the outer reinforcing rib 6 and the adjacent inner reinforcing rib 5. The limiting plate 7 is in contact with the positioning plate 4.

[0027] The bent plate 1, the outer reinforcing rib 6, the bent plate 1 and the inner reinforcing rib 5, the positioning plate 4 and the outer reinforcing rib 6, the positioning plate 4 and the inner reinforcing rib 5, and the inner reinforcing rib 5 and the outer reinforcing rib 6 and the limiting plate 7 in the embodiment are all fixed through the clamping block 8 and the clamping groove 9.

[0028] The manufacturing process of the marine heavy-duty diesel engine expansion water tank in the embodiment comprises the following steps:

[0029] A, the bending plate 1 and the positioning plate 4 are adjusted to increase 1.5 mm in the X-axis direction according to the welding deformation amount during laser blanking, and the increased amount is consistent between adjacent through holes 10, so as to ensure that the hole distance of the through hole 10 is affected by the welding deformation and shrinkage to change the installation and use of the water tank.

[0030] B, the water tank side plate 2 is adjusted to increase 1.5 mm in width from both ends to the middle direction in a gradual change way (length 165 mm) according to the welding deformation amount during laser blanking, and the increased amount is used to produce counter-deformation of the water tank cover plate 3 during riveting to ensure that the size is not qualified due to welding deformation and shrinkage.

[0031] C, the inner reinforcing rib 5 and the outer reinforcing rib 6 are adjusted to increase 1 mm in top width in a gradual change way according to the welding deformation amount during laser blanking, and the increased amount is used to produce counter-deformation of the bending plate 1 during riveting to ensure that the size is not qualified due to welding deformation and shrinkage.

[0032] D, the bending plate 1 and the water tank cover plate 3 are adjusted to ensure that the bending linearity and angle are less than 0.5 mm during riveting to ensure that the time gap is less than 0.5 mm.

[0033] E, after welding, the weld toe position is processed by argon arc welding to remelt the weld, so as to eliminate the weld stress, thereby reducing the deformation of the overall structure and improving the service life of the weld.

[0034] In addition, it should be noted that the specific embodiments described in the specification, the shape of the parts, the name taken, etc. can be different, and the above described in the specification is only an example of the structure of the present application. Any equivalent changes or simple changes made according to the structure, features and principles described in the patent concept of the present application are included in the protection scope of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as they do not deviate from the structure of the present application or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A manufacturing process for an expansion water tank for a marine heavy-duty diesel engine, characterized by: The marine heavy-duty diesel engine expansion water tank comprises a bending plate (1), a water tank side plate (2), a water tank cover plate (3), a positioning plate (4), an inner reinforcing rib (5), an outer reinforcing rib (6) and a limiting plate (7); the water tank cover plate (3) and the water tank side plate (2) form a box structure, and the box structure is arranged on the top of the bending plate (1); an outer reinforcing rib (6) is arranged on both sides of the bottom of the bending plate (1); a plurality of inner reinforcing ribs (5) are arranged between the two outer reinforcing ribs (6); the two outer reinforcing ribs (6) and the plurality of inner reinforcing ribs (5) are all connected to the positioning plate (4); a limiting plate (7) is arranged between the outer reinforcing rib (6) and the adjacent inner reinforcing rib (5); and the limiting plate (7) is in contact with the positioning plate (4); The manufacturing process of the expansion water tank of the marine heavy-duty diesel engine comprises the following steps: A. The bending plate (1) and the positioning plate (4) are adjusted to increase by 1.5 mm along the X-axis direction according to the welding deformation during laser blanking, and the increase between adjacent through holes (10) is consistent, so as to ensure that the hole pitch of the through holes (10) changes due to welding deformation and shrinkage will not affect the installation and use of the water tank; B. When laser cutting, the width of the water tank side plate (2) is adjusted to increase by 1.5 mm gradually from both ends to the middle according to the amount of welding deformation. The increased amount is used to cause the water tank cover plate (3) to produce reverse deformation during riveting to ensure that the size is not unqualified due to welding deformation and shrinkage; C. The top width of the inner reinforcement rib (5) and the outer reinforcement rib (6) is adjusted to increase by 1 mm in a gradual manner according to the amount of welding deformation during laser blanking, and the increased amount is used to cause the bent plate (1) to produce reverse deformation during riveting to ensure that the size is not qualified due to deformation and shrinkage; D. When bending the bending plate (1) and the water tank cover (3), the bending linearity and angle are adjusted according to the size of the mating parts to ensure that the gap is less than 0.5 mm during riveting.

2. The manufacturing process of the expansion water tank for a marine heavy-duty diesel engine according to claim 1, characterized in that: The two outer reinforcing ribs (6) and the plurality of inner reinforcing ribs (5) are arranged at equal intervals.

3. The manufacturing process of the expansion water tank for a marine heavy-duty diesel engine according to claim 1, characterized in that: The bending plate (1) and the outer reinforcing rib (6), the bending plate (1) and the inner reinforcing rib (5), the positioning plate (4) and the outer reinforcing rib (6), the positioning plate (4) and the inner reinforcing rib (5), and the inner reinforcing rib (5), the outer reinforcing rib (6) and the limiting plate (7) are all fixed by means of a clamping block (8) and a clamping slot (9).

4. The manufacturing process of the expansion water tank for a marine heavy-duty diesel engine according to claim 1, characterized in that: The bending plate (1) and the positioning plate (4) are both provided with through holes (10).

5. The manufacturing process of the expansion water tank for a marine heavy-duty diesel engine according to claim 1, characterized in that: It also includes E. After welding, the weld toe position is remelted by argon arc welding to eliminate the weld stress, thereby reducing the deformation of the overall structure and increasing the service life of the weld.

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