Flame heating device suitable for hull carrying weld joints, and method

Abstract

The invention discloses a flame heating device suitable for hull carrying weld joints, and a method. The flame heating device suitable for hull carrying weld joints comprises an air pipe, a connectingpipe, a main pipe, a branch pipe, a screw rod, an adjusting rod, a bearing, a sleeve plate, a supporting column, a rolling wheel and a limiting assembly, wherein a first limiting block is fixedly connected to the inner side wall of the main pipe; an adjusting block is arranged in the main pipe; a first limiting groove is formed in the outer side of the adjusting block; the first limiting block isclamped in the first limiting groove; the tail end of the screw rod penetrates into the main pipe; the screw rod is rotatably connected with the inner end wall of the main pipe through the bearing; athreaded through hole is formed in one side of the adjusting block; the screw rod is screwed with the threaded through hole; the threaded rod can be rotated to bee screwed with the threaded through hole; and the adjusting block can move along the interior of the air pipe under the action of the first limiting block and the first limiting groove, and the side, not communicated with the connectingpipe, of the adjusting block can be isolated, so that the number of workable branch pipes is controlled, and adjustment can be conveniently conducted according to the length of a weld joint.

Description

technical field [0001] The present application relates to a flame heating device, in particular to a flame heating device and method suitable for carrying welds on a ship hull. Background technique [0002] In the process of shipbuilding, marine engineering and steel structure manufacturing, due to the harsh working environment of the structure, it needs to withstand greater wind and wave impact and alternating loads; the requirements for steel are higher. In order to ensure that the weld has sufficient toughness, the usually selected The materials are all high-strength steel, high-strength steel has many alloy elements, and the carbon equivalent Ceq is relatively high. The heat-affected zone of the steel plate weld is austenitized and cooled in a natural state. Due to the heat dissipation in the air and the large amount of heat absorption of the base metal , the cooling rate is fast, the hardness is obviously increased, the plastic toughness of the heat-affected zone is red...

AI Technical Summary

Problems solved by technology

[0003] In the traditional technology, manual cutting torch flame heating relies on manual operation, and workers adjust it at any time according to experience. There is a situation of uneven heating temperature, which makes the weld prone to cold crack defects. At the same time, the current flame heating device has a simple structure and is not easy to use Easy to adjust according to the length of the weld, easy to cause waste

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