Repairing method for blade abrasion of high-temperature warm air machine
A high-temperature hot air blower and blade wear technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of long time to replace the impeller, affecting production, etc., to shorten the maintenance time, prolong the service life, and reduce maintenance. cost effect
Active Publication Date: 2014-04-16
WENGFU (GRP) CO LTD
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Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the present invention aims to provide a quick repair method for the wear and tear of the blades of the hot air blower in the production of phosphogypsum granular ammonium sulfate, to ensure fast repair and strengthen the blades, so as to solve the problems caused by the long time required to replace the impeller. Problems that seriously affect production
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[0013] Such as figure 1 , figure 2 As shown, the rear disk 2 is connected to the hub 3, and the blades 1 are connected to the rear disk 2. After the hot air blower has been working for a period of time, the root of the blade 1 of the hot air blower, that is, the connecting part of the blade 1 and the rear disk 2, is subject to complex forces. , Easy to produce cracks, and the wear of this part is larger than other parts of the blade, so the hot air blower needs to be repaired after working for a period of time.
[0014] The hot air blower model is W6-48-18.5D, the flow is 131000m3 / h, the speed is 960r / min, the power is 185kw, the number of blades is 12, the impeller diameter is 1.8m, the working temperature is 500~670℃, the impeller material is 310S, repair The plate is welded with 1cr20ni14si2 heat-resistant steel plate, and the electrode is welded with CHS412 stainless steel electrode.
[0015] 1 Since the blade 1 has a section of about 90mm at the edge that is forward-bent, fi...
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The invention discloses a repairing method for blade abrasion of a high-temperature warm air machine. The repairing method comprises the following operation steps that a heat resistant stainless steel plate is used for manufacturing a reinforcing plate which is equal to a blade root joint part in size, the reinforcing steel plate is pressed to be formed according to the shape of a blade root, the reinforcing steel plate covers the back face of the blade root joint part, one edge point of the reinforcing steel plate is welded on a rear disk, the rest three edge points of the reinforcing steel plate are welded to the blade root, a symmetrical welding method is used, and after spot welding is completed, full-length welding is conduced according to the same method; then a layer of abrasion resisting material is welded on the welding seams and the parts easy to abrade of the rear disk of the working faces of blades in an overlaying mode according to the welding sequence, and blade static balance calibration is conducted after the above welding process. According to the repairing method for blade abrasion of the high-temperature warm air machine, the potential safety hazards of a fan impeller can be quickly removed, the maintaining cost is lowered, the maintaining time can be shortened as much as possible, the service life of a fan is prolonged, and the repairing method is suitable for ammonium sulfate production enterprises.
Description
Technical field [0001] The invention relates to a method for repairing wear and tear of ammonium sulfate hot air blower blades. Background technique [0002] Ammonium sulfate is also known as ammonium sulfate. As a fertilizer product, it contains two nutrients, nitrogen and sulfur, and is one of the main fertilizers in modern agriculture and forestry industries. In the production of granular ammonium sulfate, the granulator device requires a large amount of high-temperature hot air to dry the material, and it cannot do without the high-temperature fan. The high-temperature fan has a high working temperature and very poor working conditions. In its working process, the working medium of the high-temperature fan is often high-temperature hot air with a large number of tiny solid particles. Therefore, when the fan works under high temperature conditions, its blades are often accompanied by the combined action of high temperature and a large number of small solid particles, and the ...
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Login to View More IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 赵兵吴子汉李洪开
Owner WENGFU (GRP) CO LTD