CN110899918A - Welding method for reducing welding deformation of frame box body - Google Patents

Abstract

The invention discloses a welding method for reducing welding deformation of a frame box body, which specifically comprises the following steps: s1, welding the middle rib plate of the box body with the bottom plate; s2, welding the clapboard with the bottom plate; s3, welding the reinforcing ring with the bottom plate; s4, welding the web plate and the bottom plate; s5, welding the clapboard and the web plate; s6, welding the accessory with the bottom plate; and S7, turning over the box body through a positioner, and welding the other side of the box body. The invention aims to provide a welding method for reducing welding deformation of a frame box body, which can ensure that no deformation is generated in the process of welding the frame box body, improve the product precision and ensure the working efficiency.

Description

Welding method for reducing welding deformation of frame box body

Technical Field

The invention relates to the field of frame box body manufacturing, in particular to a welding method for reducing welding deformation of a frame box body.

Background

Nowadays, the frame box product types are more, and along with the increase of frame box volume, the preparation degree of difficulty is also bigger and bigger, produces the phenomenon of indent or evagination very easily in welding process.

The frame box comprises web, bottom plate, baffle, gusset and annex, at the welded in-process, need weld the web, the bottom plate, the baffle, gusset and annex, the welding volume is very big, the welding degree of difficulty is also very big, the welded order selection can cause the influence to the deformation of welding, if not selecting correct welding order, can to a great extent cause the frame box to warp, influence box welding quality, cause the product percent of pass low, serious deformation can be reworked the box, reduce work efficiency.

Disclosure of Invention

The invention provides a welding method for reducing welding deformation of a frame box body, which is used for welding according to a definite welding sequence, so that the problem of welding deformation of the frame box body is reduced, and the product precision is improved.

In order to achieve the purpose, the invention provides the following technical scheme, and the welding method for reducing the welding deformation of the frame box body specifically comprises the following steps:

s1, welding the middle rib plate of the box body with the bottom plate;

s2, welding the clapboard with the bottom plate;

s3, welding the reinforcing ring with the bottom plate;

s4, welding the web plate and the bottom plate;

s5, welding the clapboard and the web plate;

s6, welding the accessory with the bottom plate;

and S7, turning over the box body through a positioner, and welding the other side of the box body.

Preferably, in step S1, a first weld, a second weld, a third weld, a fourth weld, a fifth weld, and a sixth weld are welded in sequence.

Preferably, in step S2, a seventh weld seam, an eighth weld seam, a ninth weld seam, a tenth weld seam, an eleventh weld seam, a twelfth weld seam, a thirteenth weld seam, a fourteenth weld seam, a fifteenth weld seam, a sixteenth weld seam, a seventeenth weld seam, an eighteenth weld seam, a nineteenth weld seam, a twentieth weld seam, a twenty-first weld seam, a twenty-second weld seam, a twenty-third weld seam, a twenty-fourth weld seam, a twenty-fifth weld seam, a twenty-sixth weld seam, a twenty-seventh weld seam, a twenty-eighth weld seam, a twenty-ninth weld seam, a thirty-seventh weld seam, a thirty-eighth weld seam, a thirty-ninth weld seam, a thirty-eleventh weld seam, a thirty-second weld seam, a thirty-third weld.

Preferably, in step S3, a thirty-fifth weld, a thirty-sixth weld, a thirty-seventh weld, and a thirty-eighth weld are welded in sequence.

Preferably, in step S4, a thirty-ninth weld, a forty-fourth weld, a forty-first weld, a forty-second weld, a forty-third weld, a forty-fourth weld, a forty-fifth weld, a forty-sixth weld, a forty-seventh weld, a forty-eighth weld, a forty-ninth weld, a fifty-fifth weld, a fifty-third weld, a fifty-fourth weld, a fifty-fifth weld, and a fifty-sixth weld are welded in this order.

Preferably, in step S5, a fifty-seventh weld, a fifty-eighth weld, a fifty-ninth weld, a sixty-sixth weld, a sixty-first weld, a sixty-second weld, a sixty-third weld, a sixty-fourth weld, a sixty-fifth weld, a sixty-sixth weld, a sixty-seventh weld, a sixty-eighth weld, a sixty-ninth weld, a seventy-seventh weld, a seventy-first weld, a seventy-second weld, and a seventy-third weld are welded in this order.

Preferably, in step S6, when welding the accessory, the short weld seam is welded first, the long weld seam is welded second, and the transverse weld seam is welded first and then the longitudinal weld seam is welded.

Preferably, only a flat welding mode is adopted during welding.

Preferably, the welding position is free of rust, oxide skin, oil stain and moisture within 10 cm.

Preferably, the following welding parameters are also included:

the welding adopts the mixed gas of argon and carbon dioxide as protective gas, wherein the mixed gas comprises 10 percent of carbon dioxide and 90 percent of argon;

the ER50-6 welding wire is adopted during welding, and the barreled welding wire with the specification of phi 1.2 mm is used as a welding material;

the welding current is 260-300A, the welding voltage is 28-30V, the gas flow is 17-25L/min, and the dry elongation of the welding wire is 15-18 mm.

The technical scheme of the invention has the following advantages: the invention discloses a welding method for reducing welding deformation of a frame box body, which specifically comprises the following steps: s1, welding the middle rib plate of the box body with the bottom plate; s2, welding the clapboard with the bottom plate; s3, welding the reinforcing ring with the bottom plate; s4, welding the web plate and the bottom plate; s5, welding the clapboard and the web plate; s6, welding the accessory with the bottom plate; and S7, turning over the box body through a positioner, and welding the other side of the box body. The invention provides a welding method for reducing welding deformation of a frame box body, which can ensure that the frame box body is not deformed in the welding process, is suitable for a plurality of series of frame box bodies, improves the product precision and ensures the working efficiency.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the apparatus particularly pointed out in the written description and drawings thereof.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic flow chart of a welding method for reducing welding deformation of a vehicle frame box body according to the present invention;

FIG. 2 is a perspective view of the welding method for reducing welding deformation of the carriage case according to the present invention, wherein the case is rotated clockwise by 10 degrees and 5 degrees respectively along the X-axis and the Y-axis;

FIG. 3 is a perspective view of the welding method for reducing welding deformation of the carriage box according to the present invention, wherein the box is rotated counterclockwise by 10 degrees and 5 degrees respectively along the X axis and the Y axis.

The following were used: 1-first welding seam, 2-second welding seam, 3-third welding seam, 4-fourth welding seam, 5-fifth welding seam, 6-sixth welding seam, 7-seventh welding seam, 8-eighth welding seam, 9-ninth welding seam, 10-tenth welding seam, 11-eleventh welding seam, 12-twelfth welding seam, 13-thirteenth welding seam, 14-fourteenth welding seam, 15-fifteenth welding seam, 16-sixteenth welding seam, 17-seventeenth welding seam, 18-eighteenth welding seam, 19-nineteenth welding seam, 20-twentieth welding seam, 21-twenty-first welding seam, 22-twenty-second welding seam, 23-twenty-third welding seam, 24-twenty-fourth welding seam, 25-twenty-fifth welding seam, 26-twenty-sixth welding seam, 27-twenty-seventh welding seam, 28-twenty-eighth weld, 29-twenty-ninth weld, 30-thirty-third weld, 31-thirty-first weld, 32-thirty-second weld, 33-thirty-third weld, 34-thirty-fourth weld, 35-thirty-fifth weld, 36-thirty-sixth weld, 37-thirty-seventh weld, 38-thirty-eighth weld, 39-thirty-ninth weld, 40-forty-fourth weld, 41-forty-first weld, 42-forty-second weld, 43-forty-third weld, 44-forty-fourth weld, 45-forty-fifth weld, 46-forty-sixth weld, 47-forty-seventh weld, 48-forty-eighth weld, 49-forty-ninth weld, 50-fifty-fifth weld, 51-fifty-first weld, 52-fifty-second weld, 53-fifty-third weld, 54-fifty-fourth weld, 55-fifty-fifth weld, 56-fifty-sixth weld, 57-fifty-seventh weld, 58-fifty-eighth weld, 59-fifty-ninth weld, 60-sixty weld, 61-sixty-first weld, 62-sixty-second weld, 63-sixty-third weld, 64-sixty-fourth weld, 65-sixty-fifth weld, 66-sixty-sixth weld, 67-sixty-seventh weld, 68-sixty-eight weld, 69-sixty-ninth weld, 70-seventy-second weld, 71-seventy-first weld, 72-seventy-second weld, 73-seventy-third weld, 74-box, 75-middle web, 76-bottom plate, 77-partition, 78-reinforcement ring, 79-web, 80-attachment.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

The embodiment of the invention provides a welding method for reducing welding deformation of a frame box body, which specifically comprises the following steps as shown in figures 1-3:

s1, welding the middle rib plate 75 of the box body 74 with the bottom plate 76;

s2, welding the partition plate 77 with the bottom plate 76;

s3, welding the reinforcing ring 78 with the bottom plate 76;

s4, welding a web 79 and the bottom plate 76;

s5, welding the partition plate 77 and the web 79;

s6, welding the accessory 80 with the bottom plate 76;

and S7, turning the box body 74 through a positioner, and welding the other surface.

The working principle and the beneficial effects of the technical scheme are as follows: when the box body is welded, the middle rib plate 75 is welded with the bottom plate 76, the partition plate 77 is welded on the bottom plate 76 after welding is finished, the web plate 79 is welded on the bottom plate 76, the partition plate 77 on the bottom plate 76 is welded with the web plate 79, the accessory 80 is welded on the bottom plate 76, after all welding is finished, the box body is turned over by using the positioner, and then the other surface of the box body is welded according to the sequence of S1-S6.

In one embodiment, in step S1, a first weld 1, a second weld 2, a third weld 3, a fourth weld 4, a fifth weld 5, and a sixth weld 6 are welded in sequence.

The working principle and the beneficial effects of the technical scheme are as follows: the middle rib plate 75 is welded to the bottom plate 76, the welding is performed sequentially according to the sequence of the first welding line 1 to the sixth welding line 6, the welding is performed from the center to the outside, and then the symmetrical positions are welded, so that the welding deformation between the middle rib plate 75 and the bottom plate 76 can be reduced.

In one embodiment, in step S2, a seventh weld seam 7, an eighth weld seam 8, a ninth weld seam 9, a tenth weld seam 10, an eleventh weld seam 11, a twelfth weld seam 12, a thirteenth weld seam 13, a fourteenth weld seam 14, a fifteenth weld seam 15, a sixteenth weld seam 16, a seventeenth weld seam 17, an eighteenth weld seam 18, a nineteenth weld seam 19, a twentieth weld seam 20, a twenty-first weld seam 21, a twenty-second weld seam 22, a twenty-third weld seam 23, a twenty-fourth weld seam 24, a twenty-fifth weld seam 25, a twenty-sixth weld seam 26, a twenty-seventh weld seam 27, a twenty-eighth weld seam 28, a twenty-ninth weld seam 29, a thirty-third weld seam 30, a thirty-eleventh weld seam 31, a thirty-second weld seam 32, a thirty-third weld seam 33, and a thirty-fourth weld seam 34 are welded in sequence.

The working principle and the beneficial effects of the technical scheme are as follows: the partition plate 77 is welded to the bottom plate 76, the seventh welding line 7 and the thirty-fourth welding line 34 are welded in sequence during welding, the welding is performed from the center to the outside, and then symmetrical positions are welded, so that the welding deformation between the partition plate 77 and the bottom plate 76 can be reduced.

In one embodiment, in step S3, the thirty-fifth weld 35, the thirty-sixth weld 36, the thirty-seventh weld 37, and the thirty-eighth weld 38 are welded in sequence.

The working principle and the beneficial effects of the technical scheme are as follows: the reinforcing rings 78 are welded to the bottom plate 76, the welding is performed according to the sequence of the thirty-fifth welding line 35 to the thirty-eighth welding line 38, the four reinforcing rings 78 are welded to the bottom plate 76, the four reinforcing rings are welded from the center to the outside, and deformation of the bottom plate 76 caused by welding the reinforcing rings 78 can be reduced.

In one embodiment, in step S4, a thirty-ninth weld 39, a forty-first weld 40, a forty-first weld 41, a forty-second weld 42, a forty-third weld 43, a forty-fourth weld 44, a forty-fifth weld 45, a forty-sixth weld 46, a forty-seventh weld 47, a forty-eighth weld 48, a forty-ninth weld 49, a fifty-weld 50, a fifty-first weld 51, a fifty-second weld 52, a fifty-third weld 53, a fifty-fourth weld 54, a fifty-fifth weld 55, and a fifty-sixth weld 56 are welded in sequence.

The working principle and the beneficial effects of the technical scheme are as follows: the web 79 is welded to the bottom plate 76, and the thirty-ninth welding seam 39-the fifty-sixth welding seam 56 are welded in sequence during welding, so that the deformation of the bottom plate 76 caused by the welding of the web 79 is reduced according to the principle of welding from the center to the outside.

In one embodiment, in step S5, a fifty-seventh weld 57, a fifty-eighth weld 58, a fifty-ninth weld 59, a sixty weld 60, a sixty-first weld 61, a sixty-second weld 62, a sixty-third weld 63, a sixty-fourth weld 64, a sixty-fifth weld 65, a sixty-sixth weld 66, a sixty-seventh weld 67, a sixty-eighth weld 68, a sixty-ninth weld 69, a seventy-first weld 70, a seventy-first weld 71, a seventy-second weld 72, and a seventy-third weld 73 are welded in sequence.

The working principle and the beneficial effects of the technical scheme are as follows: the partition plate 77 and the web plate 79 are welded, the fifty-seventh welding seam 57-the seventy-third welding seam 73 are welded in sequence during welding, and the bottom plate 76 is welded from the center to the outside, so that deformation caused by welding the partition plate 77 and the web plate 79 can be reduced.

In one embodiment, in step S6, the attachment 80 is welded by first welding a short weld, then welding a long weld, and then welding a transverse weld and then a longitudinal weld.

The working principle and the beneficial effects of the technical scheme are as follows: and finally, welding the accessory 80 to the bottom plate 76, wherein the accessory 80 comprises a plurality of baffle plates and support plates, the accessory 80 is welded from the center to the outside during welding, short welding seams are welded firstly, long welding seams are welded secondly, transverse welding seams are welded firstly, longitudinal welding seams are welded secondly, and deformation of the bottom plate 76 caused by the welding of the accessory 80 is reduced.

In one embodiment, the welding can be performed only by flat welding.

The working principle and the beneficial effects of the technical scheme are as follows: the flat welding mode is adopted for welding, the welding operation is convenient, the welding seam is formed well, and the welding efficiency is high.

In one embodiment, the weld site is free of rust, scale, oil, moisture within 10 centimeters.

The working principle and the beneficial effects of the technical scheme are as follows: the welding position needs to be ensured to be clean during welding, and the defects of air holes, cracks and the like can be caused during welding due to the fact that rust, oxide skin, oil stains and moisture exist in the welding position within 10 cm, so that the welding position is cleaned before welding, the welding defects can be reduced, and the product quality is ensured.

In one embodiment, the following welding parameters are also included:

the welding adopts the mixed gas of argon and carbon dioxide as protective gas, wherein the mixed gas comprises 10 percent of carbon dioxide and 90 percent of argon;

the ER50-6 welding wire is adopted during welding, and the barreled welding wire with the specification of phi 1.2 mm is used as a welding material;

the welding current is 260-300A, the welding voltage is 28-30V, the gas flow is 17-25L/min, and the dry elongation of the welding wire is 15-18 mm.

The working principle and the beneficial effects of the technical scheme are as follows: during welding, the mixed gas of argon and carbon dioxide is used as protective gas, a protective layer can be formed in the welding process, oxygen is isolated outside, metal is protected from being oxidized at high temperature, and the quality of a welding line is improved; the ER50-6 welding wire is adopted during welding, the barreled welding wire with the specification of phi 1.2 mm is used as a welding material, the welding current is 260-300A, the welding voltage is 28-30V, the gas flow is 17-25L/min, and the dry elongation of the welding wire is 15-18 mm, so that the welding quality can be improved, and the welding is firmer.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A welding method for reducing welding deformation of a frame box body is characterized by comprising the following steps:

s1, welding the middle rib plate (75) of the box body (74) with the bottom plate (76);

s2, welding the partition plate (77) with the bottom plate (76);

s3, welding the reinforcing ring (78) with the bottom plate (76);

s4, welding a web plate (79) and the bottom plate (76);

s5, welding the partition plate (77) and the web plate (79);

s6, welding the accessory (80) and the bottom plate (76);

and S7, turning over the box body (74) through a positioner, and welding the other side.

2. The welding method for reducing the welding deformation of the vehicle frame box body according to the claim 1, characterized in that in the step S1, a first welding seam (1), a second welding seam (2), a third welding seam (3), a fourth welding seam (4), a fifth welding seam (5) and a sixth welding seam (6) are welded in sequence.

3. The welding method for reducing welding deformation of the vehicle frame box body according to claim 1, characterized in that in step S2, a seventh welding seam (7), an eighth welding seam (8), a ninth welding seam (9), a tenth welding seam (10), an eleventh welding seam (11), a twelfth welding seam (12), a thirteenth welding seam (13), a fourteenth welding seam (14), a fifteenth welding seam (15), a sixteenth welding seam (16), a seventeenth welding seam (17), an eighteenth welding seam (18), a nineteenth welding seam (19), a twentieth welding seam (20), a twenty-first welding seam (21), a twenty-second welding seam (22), a twenty-third welding seam (23), a twenty-fourth welding seam (24), a twenty-fifth welding seam (25), a twenty-sixth welding seam (26), a twenty-seventh welding seam (27), a twenty-eighth welding seam (28), a twenty-ninth welding seam (29), A thirtieth weld (30), a thirty-first weld (31), a thirty-second weld (32), a thirty-third weld (33), and a thirty-fourth weld (34).

4. The welding method for reducing the welding deformation of the vehicle frame box body according to the claim 1, characterized in that in the step S3, a thirty-fifth welding seam (35), a thirty-sixth welding seam (36), a thirty-seventh welding seam (37) and a thirty-eighth welding seam (38) are welded in sequence.

5. The welding method for reducing welding deformation of the frame box body according to claim 1, wherein in the step S4, a thirty-ninth welding seam (39), a forty-ninth welding seam (40), a forty-first welding seam (41), a forty-second welding seam (42), a forty-third welding seam (43), a forty-fourth welding seam (44), a forty-fifth welding seam (45), a forty-sixth welding seam (46), a forty-seventh welding seam (47), a forty-eighth welding seam (48), a forty-ninth welding seam (49), a fifty-fifth welding seam (50), a fifty-first welding seam (51), a fifty-second welding seam (52), a fifty-third welding seam (53), a fifty-fourth welding seam (54), a fifty-fifth welding seam (55) and a fifty-sixth welding seam (56) are welded in sequence.

6. The welding method for reducing the welding deformation of the vehicle frame box body according to the claim 1, characterized in that in the step S5, a fifty-seventh welding seam (57), a fifty-eighth welding seam (58), a fifty-ninth welding seam (59), a sixty welding seam (60), a sixty-first welding seam (61), a sixty-second welding seam (62), a sixty-third welding seam (63), a sixty-fourth welding seam (64), a sixty-fifth welding seam (65), a sixty-sixth welding seam (66), a sixty-seventh welding seam (67), a sixty-eighth welding seam (68), a sixty-ninth welding seam (69), a seventy welding seam (70), a seventy-first welding seam (71), a seventy-second welding seam (72) and a seventy-third welding seam (73) are welded in sequence.

7. The welding method for reducing welding deformation of the vehicle frame box body according to the claim 1, characterized in that in the step S6, when the accessory (80) is welded, the short welding seam is welded firstly, then the long welding seam is welded, and then the transverse welding seam is welded firstly, and then the longitudinal welding seam is welded secondly.

8. A welding method for reducing welding deformation of a vehicle frame box body as claimed in claim 1, wherein only a flat welding mode is adopted during welding.

9. The welding method for reducing the welding deformation of the vehicle frame box body according to claim 1, wherein the welding position is free of rust, oxide scale, oil stain and moisture within 10 cm.

10. The welding method for reducing welding deformation of the vehicle frame box body according to claim 1, characterized by further comprising the following welding parameters:

the welding adopts the mixed gas of argon and carbon dioxide as protective gas, wherein the mixed gas comprises 10 percent of carbon dioxide and 90 percent of argon;

the ER50-6 welding wire is adopted during welding, and the barreled welding wire with the specification of phi 1.2 mm is used as a welding material;

the welding current is 260-300A, the welding voltage is 28-30V, the gas flow is 17-25L/min, and the dry elongation of the welding wire is 15-18 mm.

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