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Repairing method of body cave

A body and cavitation technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of long cycle, high price, unfavorable locomotive maintenance operations, etc., and achieve the effect of improving mechanical performance and service life

Inactive Publication Date: 2011-02-16
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using SY-111 iron repair agent [produced by Yantai Jinyi Chemical Co., Ltd.], it is found that the repair material and the body cannot be well bonded together, so that the repair quality of the body cannot meet the use requirements
Fast Steel Glue Stick (FastStell) [brand name: PSI / Push] has a better repair effect, but the price is higher and the cycle is longer, which is not conducive to locomotive maintenance operations

Method used

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  • Repairing method of body cave
  • Repairing method of body cave
  • Repairing method of body cave

Examples

Experimental program
Comparison scheme
Effect test

test example 1

[0021] Test case 1 AB glue

[0022] In February 2004, the method of AB glue and iron powder mixed repair was tried on 3 airframes with cavitation, and the method was applied to the cavitation part after polishing, and it was used after curing at room temperature for 12 hours, but in a large repair period (6 months) After the disintegration of the body, it was found that the effect was not satisfactory: after repair, the cavitation parts were all detached, and the cavitation parts continued to spread and produce new cavitation.

[0023] Analysis of the main reason is that the temperature resistance of the AB glue repair agent is only 80°C, the temperature of the body can be as high as 90°C during the operation, and the AB glue cannot meet the temperature requirements; in addition, it is not easy to determine the mixing ratio of AB glue and iron powder when the repair agent is mixed. The adhesion of the mixed repair agent is not enough and easy to fall off, which will directly a...

experiment example 2

[0024] Experimental case 2 SY-111 iron repair agent

[0025] 1. Manufacturer: Yantai Jinyi Chemical Co., Ltd.;

[0026] Product properties and uses: gray iron color, clay-like. It is suitable for the repair of defects such as air holes, sand holes, and cracks in iron castings of various materials, as well as the repair and regeneration of worn and damaged parts of various mechanical equipment.

[0027] 2. Operation process

[0028] 1) Surface treatment: The surface to be repaired must be free of oil, water and other impurities. If possible, it can be roughened with an angle grinding wheel, sandblasting gun, etc., and then cleaned with acetone or alcohol and dried.

[0029] 2) Mixing: Mix A and B components strictly according to the specified ratio, and stir well until the colors are completely consistent.

[0030] 3) Coating: Use a scraper or a rubber knife to apply a small amount of the repairing agent on the surface to be repaired, and press repeatedly to fully infiltrate...

test example 3

[0034] Test case 3 Fast steel glue stick (FastStell)

[0035] 1. Product manufacturer and performance:

[0036] Brand: PSI / Push

[0037] Original model: FastStell

[0038] Where to buy: USA

[0039] This product is a steel-reinforced repairing agent, which can fill and bond leaks, cracks, blisters, defects, fractures, damages, etc. on steel, iron, aluminum and other metal containers, pipes and parts. . In addition, it can quickly make and copy parts, models, and templates, repair peeled threads, and be used as nuts and bolts for fastening, sealing, and other various forms of installation and fixing.

[0040]Product trial method: Before use, the floating rust, dust and oil stains around the area to be repaired must be cleaned up. Take out the colloid in the plastic tube, cut off the required amount, and knead the two different colors of the colloid inner core and outer skin into one color by hand (about 1 to 2 minutes) until it is uniform. Press it firmly into the patch a...

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Abstract

The invention belongs to the field of body repairing, in particular relates to a repairing method of a body cave, in particular to the devices of a diesel engine, an engine, and the like which work under a high-temperature condition. The invention solves the technical problem of providing a novel method for repairing the body cave to increase the service life of the device. The repairing method comprises the following steps of: A, cleaning the surface of a body cave part; B, coating an industrial repairing agent on the body cave part; C, initially solidifying: maintaining 2-3 hours at the temperature condition of 25-30 DEG C; D, finally solidifying: heating the repaired part of the body to the temperature of 70-100 DEG C and maintaining at least 24 hours at the temperature of 70-100 DEG C; and E, processing: mechanically processing the completely-solidified surface to be repaired according to the use requirement of the body. The repairing method can ensure the body of the diesel engine not to be repaired again in an un-wheeling repair period, and the service life of the diesel engine body is prolonged to 8-10 years from 5-6 years.

Description

technical field [0001] The invention belongs to the field of body repair, and in particular relates to a repair method for body cavitation, in particular to diesel engines, engines and other equipment working under high temperature conditions. Background technique [0002] Body cavitation is a kind of damage that occurs on the surface of the machine when the machine part and the liquid move relatively at high speed. It is characterized by the accumulation of small holes on the metal surface of the machine, in the form of honeycomb or dispersed holes. The surface of the hole is clean and free of corrosion products, and the diameter of the hole is generally more than 1mm. The inventor of the present invention (hereinafter referred to as the inventor) found that the cavitation of the diesel engine body is particularly serious, and some of the cavitation parts are small holes in sheets with a diameter of 2 to 10mm, and there are also single, large and deep holes, the largest of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B77/04C23C22/02
Inventor 张文荣何红兵
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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