Urea nozzle vacuum welding device and welding process thereof
A urea nozzle and vacuum welding technology, which is applied in the direction of auxiliary devices, welding equipment, auxiliary welding equipment, etc., can solve problems such as easy failure, unstable product operation, failure of automobile SCR system, etc., so as to reduce the probability of crystallization and improve Welding appearance quality, the effect of solving the effect of vacuum heat insulation
Inactive Publication Date: 2015-12-23
十堰市倍力汽车管业有限公司
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Problems solved by technology
In the actual processing process, since the urea nozzle is first vacuumed and then put into the continuous brazing furnace for welding, it will cause inconsistent vacuum degree of the product and affect the vacuum degree of the vacuum section of the product, causing the urea nozzle to work again and be affected by temperature. Influenced by the influence of urea nozzle welding technology, accumulations are slowly formed inside, forming urea hole blockage, causing the failure of the automobile SCR system. It can be seen that there are relatively large technical defects in the prior art urea nozzle welding technology, which makes the product work unstable and prone to failure
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[0023] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
[0024] Such as figure 1 and figure 2 As shown, a vacuum welding device for urea nozzles includes a vacuum heating furnace body 1 with a hollow structure. One side of the vacuum heating furnace body 1 is provided with a heat-resistant sealing cover 2 that is easy to open. The heat-resistant sealing cover 2 is used for The vacuum heating furnace body 1 is sealed during welding to prevent external air from entering and a...
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The invention discloses a urea nozzle vacuum welding device which comprises a vacuum heating furnace body. A heat-resisting sealing cover convenient to open is arranged on one side of the vacuum heating furnace body. A welding jig device is movably arranged in the vacuum heating furnace body. The invention further discloses a welding process of the urea nozzle vacuum welding device. The welding process includes the following steps that first, urea nozzles are stacked on welding jig plates; second, the welding jig plates where all the urea nozzles are stacked are stacked in the vacuum heating furnace body; third, the vacuum heating furnace body where the welding jig plates are stacked is sealed and subjected to vacuum pumping until the pressure becomes negative; fourth, the urea nozzles are heated when the vacuum heating furnace body is in a negative pressure environment; and fifth, the urea nozzles are welded when the vacuum heating furnace body is in the negative pressure environment. The urea nozzles are stacked in the vacuum heating furnace body in the negative pressure environment to be heated, so that welding fluxes are fully melted and absorbed, the welding strength, the appearance quality and the production efficiency of the urea nozzles are improved, and the crystallization probability is decreased.
Description
technical field [0001] The invention relates to a welding device for a urea nozzle, and also relates to a vacuum welding process used in the welding device. Background technique [0002] In the prior art, the urea nozzle needs to be welded by traditional welding technology during the manufacturing process, and during welding, it is necessary to vacuumize the urea nozzle first, and then use a continuous brazing furnace for welding. In the actual processing process, since the urea nozzle is first vacuumed and then put into the continuous brazing furnace for welding, it will cause inconsistent vacuum degree of the product and affect the vacuum degree of the vacuum section of the product, causing the urea nozzle to work again and be affected by temperature. Influenced by the influence of urea nozzles, accumulations are slowly formed inside, forming urea hole blockage, causing the failure of the automotive SCR system. It can be seen that there are relatively large technical defec...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23K1/008B23K3/00B23K3/08B23K37/04
CPCB23K1/008B23K1/0008B23K3/00B23K3/087
Inventor 胡庆方鲍丽华朱名钊
Owner 十堰市倍力汽车管业有限公司