Variable radius arc frame type preheating device

A preheating device and frame-type technology, applied in auxiliary devices, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problem of reducing the cooling speed of metal in the heat-affected zone, achieve automatic correction of preheating temperature, convenient and safe operation , the effect of preventing the device from being stuck

Active Publication Date: 2015-08-26
NANJING AUTO ELECTRIC
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  • Abstract
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a variable radius arc frame type preheating device, which can reduce the cooling speed of the metal in the heat-affected zone, avoid the occurrence of hardened structures, and at the same time better solve the problem of The problem of preheating before welding of cylinders with different diameters

Method used

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  • Variable radius arc frame type preheating device
  • Variable radius arc frame type preheating device
  • Variable radius arc frame type preheating device

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Embodiment 1

[0014] A variable radius arc frame type preheating device provided in this embodiment has a structure such as figure 1 As shown, it includes a preheating device track 1 and a roller frame track 9 arranged in parallel, a walking trolley 3 is arranged on the preheating device track, and the lower part of the walking trolley 3 is in contact with the preheating device track 1 by installing the trolley walking wheel 2, The walking trolley 3 is provided with an electrical control cabinet, and the electrical control cabinet is provided with a temperature display instrument and a control switch connected with the preheating device and the walking roller frame with a lifting mechanism; the walking trolley 3 is provided with a preheating Device mounting frame 5, preheating device 6 is installed on the top of preheating device mounting frame, preheating device is made up of heating device and variable diameter device, and variable diameter device is made up of at least two rows of variabl...

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Abstract

The present invention involves a modified radius arc frame -type preheating device, including parallel -arranged preheating device tracks and rolling wheel rack tracks. The preheating device has a walking trolley on the track.The preheating device is connected. There is a preheating device installation rack on the walking car. The upper part of the preheating device installation rack is equipped with a preheating device. The preheating device consists of heating device and a variable diameter device.The column variable diameter is composed. Each column is composed of multiple arc -shaped plates. The adjacent arc plate is connected through the axis activity between the adjacent arc boards.The heating device is evenly installed on the connecting rod between the columns; there is a walking wheel rack on the rack rack track.The present invention can be applied to the preheating process before welding of different pipe diameter and different wall thickness, and has the advantages of wide heating range, low use cost, accurate temperature control, automatic correction temperature, and convenient operation and safety.

Description

technical field [0001] The invention relates to a welding preheating device, in particular to a variable radius arc frame type preheating device, which belongs to the technical field of equipment manufacturing. Background technique [0002] Preheating pipe fittings before welding is an effective way and way to improve welding performance and welding quality. Preheating before welding can reduce the cooling rate of welded joints, facilitate the diffusion and escape of hydrogen in the weld metal, and avoid welding cracks caused by residual hydrogen in the weld metal. It can reduce the temperature difference in the heat-affected zone, improve the stress condition, reduce the cooling rate, reduce the degree of hardening, and prevent welding cracks. In the prior art, different preheating equipment needs to be equipped for preheating of different pipe diameters, and the current pipe welding preheating equipment still has the disadvantages of small heating range, low efficiency, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/00
Inventor 朱小明
Owner NANJING AUTO ELECTRIC
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