Welding process of supporting end cover plate of large equipment

A large-scale equipment and welding process technology, applied in welding equipment, arc welding equipment, metal processing equipment, etc., can solve problems such as damage, cracked welds, weld corrosion, etc., achieve broad application prospects, short residence time, prevent The effect of intergranular corrosion

Active Publication Date: 2021-05-11
苏州市东望医疗设备有限公司
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  • Abstract
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Problems solved by technology

In addition, the stress and strain generated in the joint due to pressure difference, vibration and thermal cycle, etc., may cause cracks in the weld with defects and damage the weld, or due to corrosion of the weld during use, it may also cause damage to the weld. lead to leak formation

Method used

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Embodiment Construction

[0029] The present invention proposes a welding process for supporting end cover plates of large-scale equipment, comprising the following steps:

[0030] S1. Grinding step before welding, check the welding equipment and welding positioner, and grind the cover plate and cover plate flange components to be welded. The scope of grinding the cover plate and cover plate flange components to be welded is the area to be welded on the cover plate and cover plate flange components and the 20mm area around the position to be welded.

[0031] S2. The pre-welding step is to combine the cover plate and the flange components of the cover plate, and pre-weld the joint position.

[0032] The specific operation steps are: connect the cover plate and the flange components of the cover plate without gaps, and weld the joint position. During the welding process, the welding current is 210A~230A, the welding voltage is 11V~15V, and the length of the weld bead is 10mm~25mm, the spacing is 100mm~2...

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Abstract

The invention discloses a welding process for supporting end cover plates of large-scale equipment, which includes the following steps: S1. Grinding steps before welding, inspecting welding equipment and welding positioners, and grinding the cover plates to be welded and the cover plate flange components ; S2, the pre-welding step, combining the cover plate and the cover plate flange components, and pre-welding the joint position; S3, the welding step, fixing the pre-welded cover plate and the cover plate flange components on the On the welding positioner, adjust the welding positioner to the welding station, and then perform welding processing on the cover plate and cover plate flange components; S4, the detection step, the finished product that has finished welding and completed cooling is welded Remove it from the positioner and inspect the finished product. The welding technology of the invention has stable quality, good root fusion and can well control the welding line energy. The formed weld has good compactness, and the surface is beautifully formed without appearance defects, which greatly improves the qualified rate of weld helium mass spectrometry leak detection.

Description

technical field [0001] The invention relates to a welding process, in particular to a welding process for supporting end cover plates of large-scale equipment, and belongs to the technical field of machining parts processing. Background technique [0002] The equipment supporting end cover, also known as the head in the industry, is an essential and important part of various large-scale equipment. Take the low-temperature superconducting nuclear magnetic resonance vacuum container used in the medical field as an example, this kind of cover plate is required on the container. Due to the particularity of the medical field, the requirements for equipment precision are very high. Correspondingly, the requirements for the welding seam on the cover are also extremely strict. [0003] Traditional manual argon tungsten arc welding is a high-quality welding method, so it is widely used in industrial processing industries. Manual argon tungsten arc welding has the characteristics of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/235
CPCB23K9/167B23K9/235
Inventor 董常友王宏张建平
Owner 苏州市东望医疗设备有限公司
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