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Welding method

A welding method and post-welding technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of difficult welding process and unsatisfactory welding quality.

Active Publication Date: 2018-01-30
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a welding method, which is used to solve the problem that in the prior art, when welding the liquid ammonia heater, the welding process is difficult due to the thin plate material, which in turn leads to poor welding quality. Technical problems that do not meet the requirements

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Embodiment 1

[0041] This embodiment provides a welding method, which is applied to thin-walled liquid ammonia heaters, such as figure 1 As shown, the liquid ammonia heater includes: a heater body 1, a cover plate, a conduit assembly and a mounting stud 2; the cover plate includes: a first cover plate 3 and a second cover plate 4; the conduit assembly includes : the first input conduit assembly 5, the first output conduit assembly 6, the second output conduit assembly 7 and the pressure measuring conduit assembly 8; the heater body 1 is a U-shaped structure, and the cover plate is also a U-shaped structure accordingly .

[0042] Such as figure 2 As shown, the method includes:

[0043] S201. Obtain a first welding parameter and a welding track, and weld the assembled heater body and the cover plate based on the first welding parameter and the welding track;

[0044] In this example, see image 3, the heater body is a U-shaped part with a wall thickness of about 10mm and a width of about...

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Abstract

The embodiment of the invention provides a welding method. A liquid ammonia heater comprises a heater body, cover plates, guide pipe components and a mounting stud. The method comprises the steps thatfirst welding parameters and welding trace are acquired, and based on the first welding parameters and the welding trace, the heater body and the cover plates after assembly are welded; the excess weld metal after welding is flush with the assembly end surface; the first welding parameters include the laser power 1.0-1.2 KW, the pulse frequency 40-50 Hz, the pulse laser duty ratio 50-60%, the welding speed 0.6-0.7 m / min and the protective argon flow 15-20 L / min; second welding parameters are acquired, and based on the second welding parameters, the welded heater body and the guide pipe components are welded; third welding parameters are acquired, and based on the third welding parameters, the mounting stud is welded to the heater body.

Description

technical field [0001] The invention belongs to the technical field of fine structure welding, and in particular relates to a welding method. Background technique [0002] The liquid ammonia heaters are all pressure vessels, the working pressure of the system is 2.4MPa, the burst pressure is 6.0MPa, and they have to withstand 150 fatigue tests at 2.4MPa. The thickness of the thin-walled body of the liquid ammonia heater is about 1mm, the thickness of the butt joint edge at both ends is only 1.0mm, and the thickness of the cover plate is 1.2mm. However, it is required to meet the weld penetration standard during welding, and the plate cannot be burned during the welding process of the bottom butt joint edge, so the welding process is relatively difficult. Contents of the invention [0003] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a welding method, which is used to solve the problem that in the prior art, when weldin...

Claims

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Application Information

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IPC IPC(8): B23K31/02
Inventor 王维新万佩费久灿裴妍娜周宏图张权李宝华杜利巩书才
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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