Welding method

A welding method and welding plate technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of arc crater slag inclusion, low overall welding quality, and difficulty in controlling the flatness and straightness of the weld surface.

Active Publication Date: 2012-10-10
浙江元利江东铁塔有限公司
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Problems solved by technology

[0003] At present, corresponding welding equipment (such as welding robots, etc.) has been used to replace manual welding, which has largely solved the above technical problems such as unstable welding quality. However, even so, the overall quality of welding is not high. One performance that is not high is that after welding, the flatness and straightness of the weld surface are difficult to control. The flatness is reflected in the uneven weld reinforcement, arc crater slag inclusion, etc.
Welds with high reinforcement tend to cause stress concentration, and slag inclusions in welding arc craters tend to accumulate moisture and other impurities, which are easily corroded by the outside world.

Method used

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Examples

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Embodiment

[0024] A welding method, which uses a welding robot to perform shielded welding on the foot of a transmission line tower at a temperature above 0°C with argon and carbon dioxide as shielding gases (the volume ratio of argon and carbon dioxide is 85:15), including the following Steps:

[0025] 1. Steps of the tower foot cutting

[0026] CNC cutting the steel plate to obtain the welded plate that constitutes the tower foot to ensure that the welded plate meets the accuracy requirements. Of course, the operator can also use flame cutting or shearing machine to cut and blank the material, but after the operation, it must be corrected with a straightening machine to ensure that the welded plate meets the requirements. precision requirements.

[0027] 2, point installation steps

[0028] The welding plate is further processed by means of numerical control cutting to form the welding groove 4, and then the groove and both sides of the inner and outer walls are cleaned with a poli...

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Abstract

The invention belongs to the technical field of welding and relates to a welding method. In order to solve the problems that an excess weld metal on a weld joint surface is difficult to reduce after the welding is performed, the weld joint with higher excess weld metal is easy for causing stress concentration, impurities, such as water, are easy to accumulate on a dent part on the surface, and the weld joint is easily corroded by the outside, the invention provides the welding method which comprises the steps of assembling a welding plate and symmetrically welding the welding plate and further comprises a step of causing a welding gun to deviate for 93-95 degrees from a welding direction after the assembling step and before the welding step. According to the technical scheme, the technical problems are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of welding, relates to a welding method, and in particular relates to a welding method for the foot of an iron tower. Background technique [0002] Welding is a process in which a workpiece is welded, and a filler material (usually a welding wire) is used to make the material of the welded workpiece achieve atomic bonding to form a permanent connection. The most common welding method is that the welder holds the welding torch directly and manually welds to form a weld between the welding workpieces. However, due to the different operating skills of the welders, the welder will shake fatigued after holding the welding torch for a long time, which makes welding. The forming quality is unstable, and the welding strength is different as a whole. [0003] At present, there have been corresponding welding equipment (such as welding robots, etc.) to replace manual welding, so that the above-mentioned technical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/02B23K9/16B23K9/095B23K9/12
Inventor 陈卫波朱文德罗波张斌张再新毛利刚
Owner 浙江元利江东铁塔有限公司
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