Surfacing test panel cooling device and using method thereof

Abstract

The invention discloses a surfacing test panel cooling device. The surfacing test panel cooling device comprises a casing part, namely a casing, a water inlet part, namely a water inlet pipe I and a water inlet pipe II, a water outlet part, namely a water outlet pipe I and a water outlet pipe II, a grounding wire, and a tooling part, namely threaded nails and nuts; the side portion of one side ofthe casing is connected with the water inlet pipe I and the water inlet pipe II, and the side portion of the other side of the casing is connected with the water outlet pipe I and the water outlet pipe II; water guide plates are arranged at water outlet ends, in the casing, of the water inlet pipe I and the water inlet pipe II and provided with 12-16-degree chamfers; and the multiple threaded nails are arranged at the bottom of the casing, and the nuts are arranged on the upper portions of the threaded nails. The invention further discloses a using method of the surfacing test panel device. The surfacing test panel cooling device provided by the invention is capable of effectively controlling interlayer temperature, inter-channel temperature and welding deformation.

Description

technical field [0001] The invention relates to the field of surfacing welding processing, in particular to a cooling device for a surfacing welding test plate and a method for using the same. Background technique [0002] At present, many products in the petroleum industry and chemical industry need welding procedure evaluation to verify the feasibility of the process before surfacing. The evaluation is generally based on test plates, and the evaluation method is mainly surfacing with different materials. Because the test plate itself has the characteristics of small size, thin thickness and high performance requirements. During the surfacing process, the surfacing of the test plate is likely to cause the following problems: [0003] 1. High temperature and high temperature between passes will reduce the performance of surfacing materials, such as the corrosion resistance of corrosion-resistant materials and the wear resistance of wear-resistant materials. The interpass t...

AI Technical Summary

Problems solved by technology

If the welding is not continuous, there will be a waiting time for cooling between the layers. In the case of welding after the temperature is suitable, uneven repeated heating and cooling will also cause large deformation

[0005] 3. The welding efficiency is high and the cost is high. In the process of welding the test plate, there are many welding factors, but most of the factors are caused by welding heat. Therefore, the temperature must be continuously controlled during the surfacing test plate process, such as the interlayer temperature , interpass temperature, etc. In this process, it will take most of the time to cool the workpiece, and the cost of personnel and equipment is relatively high.

[0006] 4. It is difficult to control the welding shape of dissimilar materials. When welding tin-based materials, since the melting point of tin is only 231°C (the melting point of iron is 1538°C), the temperature is too high during surfacing welding, causing tin-based alloys to be on the test plate during surfacing welding. The state is flowing like water, especially at the edge and edge of the surfacing test plate

[0007] 5. Difficult to rectify. Most of the surfacing materials of the test welding plate need to be post-welded heat treatment. For deformed materials, post-weld heat treatment is difficult to correct the deformation.

Since the surfacing is made of dissimilar materials, the expansion and contraction, shape and toughness of the two are different. Forced correction will lead to a decrease in the performance of the surfacing material. For example, wear-resistant materials have poor plastic toughness at room temperature. , in the case of strong plastic deformation, it will cause cracking and affect performance

The surfacing test plate is also not suitable for water and fire correction. Because of the characteristics of water and fire correction after heating and then forced cooling in the later stage, the performance of the surfacing material and base metal will be reduced, and the pass rate of welding evaluation will be reduced.

Images