A production process of sheet radiator for transformer

Abstract

The invention discloses a production process of a plate radiator for a transformer, and belongs to the technical field of radiators. The production process of the plate radiator for the transformer comprises the following working procedures of blanking, roll forming, plate edge shearing, primary leakage testing, outer surface coating and secondary leakage testing, wherein the plate face cleaning working procedure is performed after the blanking working procedure is carried out, the roll forming working procedure is performed after the plate face is cleaned, the plate radiator not needing hot galvanizing is directly subjected to interior washing by adopting an antirust solution after primary leakage testing is carried out, and then an inner cavity drying working procedure is carried out; the plate radiator needing hot galvanizing is subjected to a hot galvanizing working procedure and then to an interior washing working procedure by adopting the antirust solution after primary leakage testing is carried out, and then the inner cavity drying working procedure is carried out; and the secondary leakage testing working procedure is directly carried out after the outer surface coating working procedure is carried out. The production process has the beneficial effects that the interior of a radiator plate box is clean, free of oil contamination and corrosion and good in oil paint adhesive force, the process procedures are safe and environmentally friendly, and the running cost is low.

Description

technical field [0001] The invention relates to the technical field of radiators, in particular to a production process of a finned radiator for transformers. Background technique [0002] Such as figure 1 As shown in the flow chart of the traditional sheet radiator process, there are mainly the following problems in the traditional sheet radiator production process for transformers: 1. After the discharging process, it is a single sheet rolling forming process. The rolled steel plate is covered with an oil film. In the subsequent seam welding process, due to the oil film on the surface, the oil film is carbonized at high temperature during the seam welding process. For hot-dip galvanized sheet radiators, the oil film in the inner cavity will be carbonized at a large area after the hot-dip galvanizing process, and neither the subsequent kerosene flushing process nor the thermal transformer oil flushing can be completely removed. 2. The seam welding process generally uses a...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown in the flow chart of the traditional sheet radiator process, there are mainly the following problems in the traditional sheet radiator production process for transformers: 1. After the discharging process, it is a single sheet rolling forming process. The rolled steel plate is covered with an oil film. In the subsequent seam welding process, due to the oil film on the surface, the oil film will be carbonized at high temperature during the seam welding process.

For hot-dip galvanized sheet radiators, the oil film in the inner cavity will be carbonized at a large area after the hot-dip galvanizing process, and neither the subsequent kerosene flushing process nor the thermal transformer oil flushing can be completely removed

2. The seam welding process generally uses an external cooling welder. The cooling water enters the film box, and the inside of the film box is prone to rust. In the subsequent welding process of the oil collecting pipe and the heat sink, the oil film and water on the surface of the film box will affect the welding. Intensity, it is also easy to generate welding slag splash, which enters the inside of the radiator and makes it difficult to clean the inside

3. After cutting the edge of the sheet, the edge of the sheet is usually warped and has burrs. The warping will cause difficulty in stacking the fin radiator in the assembly process, and the burr on the edge of the sheet will affect the adhesion of the external paint of the fin radiator.

4. Before painting the inner wall paint, a kerosene flushing process is set up to clean up impurities such as welding slag, scale, grease, etc. inside the film box. Kerosene is combustible and volatile, which poses a safety hazard. Kerosene residues cause inner wall paint adhesion Difference

5. There is a hot transformer oil flushing process in the traditional process. The transformer oil is easily polluted after repeated use. Vacuum oil filter and other equipment are needed to purify the transformer oil. ensure

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