CN104841626A - Repairing method of metal workpiece - Google Patents
Repairing method of metal workpiece Download PDFInfo
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- CN104841626A CN104841626A CN201510086389.0A CN201510086389A CN104841626A CN 104841626 A CN104841626 A CN 104841626A CN 201510086389 A CN201510086389 A CN 201510086389A CN 104841626 A CN104841626 A CN 104841626A
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- repairing
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Abstract
The invention discloses a repairing method of a metal workpiece. The repairing method includes the steps of cleaning the surface of the metal workpiece, derusting the surface through sandblast so that the roughness degree of the metal surface can reach 6.3, cleaning and drying the surface, comprehensively cleaning up the sandblast workpiece through special cleaning agent so that the cleanliness degree can reach Sa2.5, drying the workpiece, humidifying and bottoming the workpiece, bottoming the cleaned surface through a ceramic fiber coating, repairing defected parts through chromium-molybdenum-contained small-grained wear-resistant healant, conducting drying and solidifying through an iodine-tungsten filament lamp, a warm air machine and other heating devices, conducting heating for 5 hours to 7 hours, coping the surface, cleaning and drying the surface, smearing the surface with finishing coat, and smearing the cleaned and dried workpiece with finishing coat one time to three times through corrosion remover or high-temperature ceramic protective agent. The method is wide in operation and application range, low in working condition requirement, low in cost and good in repairing effect.
Description
Technical field
The present invention relates to mechanical workpieces maintenance field, particularly relate to a kind of method for repairing and mending of metal works.
Background technology
Metal works, in the process of Long-Time Service, because the damage that wearing and tearing or corrosion are usually subject in various degree, just need be repaired or upgrade after acquiring a certain degree.Method for maintaining common is at present mainly replacing, welding or processing etc.
Common replacing options comprises the replacing of integral replacing or local part, but, because metal tools often has stronger globality, the cost of renewal part or whole workpiece is often higher, and the new part changed also easily produces unconformable situation with original part.The hot-working methods such as welding recover although can effectively damage to hole on metal works etc., but by the restriction of repair technology and the restriction of welding material, the hot-working methods such as welding are difficult to adopt on many special constructions and shaped metal workpiece, or cannot ensure repairing progress, the life-span after repairing and performance also often have bigger difference; Can produce at operating surface in hot weld mending course and namely arrive distortion and internal stress, quality control difficulty is larger; In addition, welding waits hot-working method often cannot adopt on the metal works that damage volume is larger.
Summary of the invention
The object of the invention is solution provides a kind of cost lower, the metal works method for repairing and mending of excellent effect.
Technical scheme of the present invention is: a kind of method for repairing and mending of metal works, is characterized in that, comprising: surface cleaning, carries out surface smut process to metal works, carries out cleaning, drying; Moistening bottoming, adopts ceramic fibre coating to carry out bottoming operation on clean complete surface, fills up the gap in operating surface; Defect mending, use the abrasion-resistant repair agent containing chrome molybdenum molecule to carry out defect mending, repairing face slightly exceeds former base surface; Baking and curing, use iodine-tungsten lamp, air-heater class heater carry out baking and curing, heat 5 ~ 7 hours; Figuring of surface process, use sanding machine, or repairing face is ground to datum level by lathe, reaches level and smooth standard; Brushing finish paint, after baking and curing step, uses corrosion-resistant protective paint or refractory ceramics protective agent to carry out finish paint brushing.
Preferably, described surface cleaning processes also comprises sandblasting or shot-peening, makes surface roughness reach 6.3 grade standards (being namely greater than 75 microns).
Preferably, described brushing finish paint step can repeat 2 ~ 3 times.
Preferably, can baking and curing be carried out after described moistening bottoming step, accelerate Hotfix.
Preferably, described surface cleaning uses degreased cleaning agent or environment protection water-based cleaning agent, and clean surface reaches more than S2.5 level.
Preferably, after described gentle bottoming step completes, solidify 4 ~ 7 hours under the step of 25 DEG C ~ 40 DEG C.
Preferably, the healant main component that described defect mending step uses for filling the epoxy resin of Antaciron, and adopts the solidification such as iodine-tungsten lamp, air-heater means.
Preferably, the corrosion-resistant protective paint that described brushing finish paint step uses is take epoxy resin as the macromolecule product that base material adds nanoscale silicon, titanium dioxide ultrafine powder end is composited.
Preferably, the working environment pressure in mending course is less than 2.0Mpa.
Preferably, described metal works is metallic impeller.
Advantage of the present invention comprises: 1, and the environmental requirement of operation operating mode is lower, and operation easier is little, can not produce internal stress in operating process, is out of shape controlled.2, the equipment after reparation, using function can return to more than 90% of new product.3, the equipment after anticorrosion reparation, its antiseptic power greatly improves, and effectively increases the service life; 4, the equipment after the reparation of ceramic coating, not easily gets rusty.Running can reduce laying dust again when using, and reduces revolution electric current, thus reaches the effect of saving energy consumption, reducing vibrations.5, the cost of prosthetic appliance of the present invention obviously reduces than the cost changing relevant device.
The technological means realized to make the present invention, technical characteristic, goal of the invention and technique effect are easy to understand, and below in conjunction with concrete diagram, set forth the present invention further.
Accompanying drawing explanation
Fig. 1 is main flow figure of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, technical characteristic, goal of the invention and technique effect are easy to understand, and below in conjunction with concrete diagram, set forth the present invention further.
One, the working condition of metal works repairing:
Temperature: within the scope of-20 DEG C ~ 288 DEG C;
Pressure: within 2.0Mpa;
Humidity: do not limit
Running device repair time need tripartite list power failure, shut down.
During field construction, execution conditions need be possessed; Running device needs when repairing to have a power failure, shut down.
Two, the range of application of metal works repairing:
All have corrosion, the hardware of wearing and tearing, facility, all can adopt method for repairing and mending of the present invention, proved that the present invention can be successfully applied to the impeller of water pump, blower fan, air compressor machine, steam turbine etc., the wear-resisting repairing of housing parts and anticorrosion by experiment; The inside and outside wall corrosion of the groove tank of gas piping, also whose pipe, water tank and oil gas tank cabinet, soda acid etc.; The reparation that do not have a power failure of the electrical panel bin corroded; The anti-corrosion of metal of boats and ships, structural member; The wall holes blocking such as oil depot, power supply station etc.
Three, for impeller, implementation process of the present invention is described:
The impeller primary damage situation that needs are repaired is the wearing and tearing at impeller blade position, and partial blade wearing and tearing are more than 30 percent, and impeller cannot continue normal use completely.
(1) scale remover cleaning is carried out to damaging the impeller workpiece polluted.Use known metal scavenger specially and the adhesive surface thing of descaling tool to metallic impeller workpiece to remove, thus make impeller workpiece need the surface of repairing to reach exercisable basic demand.
(2) sandblasting or shot-peening.After impeller workpiece dries in the shade, repairing surface adhesive plaster is pasted, and sandblasting or bead are carried out to surface of workpiece, make workpiece repairing face reach the needs of operation further.
(3) cleaning, drying.Adopt special-purpose metal cleaning agent again to clean surface of the work, and use air-heater to carry out this drying operation.
(4) moistening bottoming.The agent of brushing ceramic protection is moistening bottoming operation on impeller all surface, coating layer thickness 0.3 ~ 0.8mm, plugs the gap, compacting gap, reaches and contacts firm object with impeller bottom surface, then wait for its spontaneous curing 5 hours.Ceramic protection agent should fully be stirred before use, leaves standstill and exercise use again a moment after mixing.
(5) cleaning, drying.After curing process, surface of the work is cleaned again.
(6) defect mending.Use the abrasion-resistant repair agent containing chrome molybdenum molecule to carry out defect mending, repairing face slightly exceeds former base surface.Under worst hot case condition, turbid or damaged part carries out local detail repairing to gas to use wear Protection healant, reaches optimum efficiency.
(7) baking and curing.Utilize iodine-tungsten lamp heater to toast, heat the solid state reaching healant for 7 hours.The monitoring of operating environment is should be noted that during heating, drying.
(8) polishing smoothing.After the solidification of repairing face, use Special grinding ray machine, till repairing face being ground to benchmark required standard.
(9) cleaning, drying.
(10) first finish paint.Cleaning up and surface chemically-resistant protective coating after drying, repairing the thick layer of evenly brushing 0.1 ~ 1mm on the surface;
(11) baking and curing.Utilize iodine-tungsten lamp heater to toast, heat the solid state reaching healant for 7 hours.The monitoring of operating environment is should be noted that during heating, drying.
(12) second finish paint.Cleaning up and surface chemically-resistant protective coating after drying, repairing the thick layer of evenly brushing 0.1 ~ 0.5mm on the surface;
(13) baking and curing.Utilize iodine-tungsten lamp heater to toast, heat the solid state reaching healant for 7 hours.The monitoring of operating environment is should be noted that during heating, drying.
(14) dynamic balancing measurement.Impeller dynamic balancing machine carries out dynamic balancing detection, adjustment, and must reach more than 6.3 grades can.
(15) packaging delivery.Be repair after above operation terminates to complete, to impeller japanning, packaging, deliver goods.
After repairing, the impeller form after reparation and drawing plesiomorphism degree percent 95%, service life can return to more than 80% of new product.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should belong to technology category of the present invention.
Claims (10)
1. a method for repairing and mending for metal works, is characterized in that, comprising:
Surface cleaning, carries out surface smut cleaning to metal works, and carries out cleaning, drying;
Moistening bottoming, adopts ceramic fibre coating to carry out bottoming operation on clean complete surface, fills up the gap in operating surface;
Defect mending, use the abrasion-resistant repair agent containing chrome molybdenum molecule to carry out defect mending, repairing face slightly exceeds former base surface;
Surface flatness process, uses sanding machine, repairing face is ground to datum level, reaches level and smooth standard;
Baking and curing, use iodine-tungsten lamp, air-heater class heater carry out baking and curing, heat 5 ~ 7 hours;
Brushing finish paint, after baking and curing step, uses corrosion-resistant protective paint or refractory ceramics protective agent to carry out finish paint brushing.
2. the method for repairing and mending of metal works according to claim 1, is characterized in that, described surface cleaning processes also comprises sandblasting or shot-peening, makes surface roughness reach the standard of 6.3.
3. the method for repairing and mending of metal works according to claim 1, is characterized in that, described brushing finish paint step can repeat 2 ~ 3 times.
4. the method for repairing and mending of metal works according to claim 1, is characterized in that, after described moistening bottoming step, carry out baking and curing.
5. the method for repairing and mending of metal works according to claim 1, is characterized in that, described surface cleaning uses degreased cleaning agent or environment protection water-based cleaning agent, makes clean surface reach more than Sa2.5 level.
6. the method for repairing and mending of metal works according to claim 1, is characterized in that, after described gentle bottoming step completes, solidifies 4 ~ 7 hours under the step of 25 DEG C ~ 40 DEG C.
7. the method for repairing and mending of metal works according to claim 1, is characterized in that, the healant main component that described defect mending step uses for filling the epoxy resin of Antaciron, and adopts iodine-tungsten lamp, air-heater solidification means.
8. the method for repairing and mending of metal works according to claim 1, is characterized in that, the corrosion-resistant protective paint that described brushing finish paint step uses is take epoxy resin as the macromolecule product that base material adds nanoscale silicon, titanium dioxide ultrafine powder end is composited.
9. the method for repairing and mending of metal works according to claim 1, is characterized in that, the working environment pressure in mending course is less than 2.0Mpa.
10. the method for repairing and mending of metal works according to claim 1, is characterized in that, described metal works is metallic impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086389.0A CN104841626A (en) | 2015-02-16 | 2015-02-16 | Repairing method of metal workpiece |
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| CN201510086389.0A CN104841626A (en) | 2015-02-16 | 2015-02-16 | Repairing method of metal workpiece |
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| CN104841626A true CN104841626A (en) | 2015-08-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834668A (en) * | 2016-05-31 | 2016-08-10 | 上海祥贸实业有限公司 | Wear and corrosion resisting repair method for draught fan |
| CN106555914A (en) * | 2015-09-30 | 2017-04-05 | 大亚湾核电运营管理有限责任公司 | The large-scale rubber lined pipe renovation technique of nuclear power station |
| CN108160430A (en) * | 2018-01-26 | 2018-06-15 | 福建省石狮市通达电器有限公司 | The three of the metallic mobile phone rear cover in highlighted oxygen throwing face hinder renovation technique |
| CN108355931A (en) * | 2018-02-11 | 2018-08-03 | 佛山市南海区合亿金属制品有限公司 | A kind of die casting process of surface treatment |
| CN109722632A (en) * | 2017-10-31 | 2019-05-07 | 陕西南水汽车配件制造有限公司 | A kind of aluminum alloy control arm forging coarse grains on surface ring control method |
| CN112787258A (en) * | 2020-12-31 | 2021-05-11 | 广东电网有限责任公司韶关供电局 | Repairing method of distribution box |
| CN113305500A (en) * | 2021-04-23 | 2021-08-27 | 杨斌 | Repair device for repair points with different sizes of flow passage components of self-adaptive water turbine |
| CN114887861A (en) * | 2022-04-28 | 2022-08-12 | 玉溪大红山矿业有限公司 | Repairing material and repairing method for wear surface of inner wall of end cover at material inlet and outlet ends of ball mill |
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Patent Citations (5)
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| CN101003044A (en) * | 2007-01-09 | 2007-07-25 | 孔凡星 | Method for burling shallow scratch car enamel layer |
| CN101024739A (en) * | 2007-03-30 | 2007-08-29 | 东南大学 | Water inorganic heat-resisting coating and solidifying method |
| CN101234378A (en) * | 2008-03-06 | 2008-08-06 | 梅昭志 | Paint surface posthaste photo compensation method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555914A (en) * | 2015-09-30 | 2017-04-05 | 大亚湾核电运营管理有限责任公司 | The large-scale rubber lined pipe renovation technique of nuclear power station |
| CN105834668A (en) * | 2016-05-31 | 2016-08-10 | 上海祥贸实业有限公司 | Wear and corrosion resisting repair method for draught fan |
| CN109722632A (en) * | 2017-10-31 | 2019-05-07 | 陕西南水汽车配件制造有限公司 | A kind of aluminum alloy control arm forging coarse grains on surface ring control method |
| CN108160430A (en) * | 2018-01-26 | 2018-06-15 | 福建省石狮市通达电器有限公司 | The three of the metallic mobile phone rear cover in highlighted oxygen throwing face hinder renovation technique |
| CN108355931A (en) * | 2018-02-11 | 2018-08-03 | 佛山市南海区合亿金属制品有限公司 | A kind of die casting process of surface treatment |
| CN112787258A (en) * | 2020-12-31 | 2021-05-11 | 广东电网有限责任公司韶关供电局 | Repairing method of distribution box |
| CN113305500A (en) * | 2021-04-23 | 2021-08-27 | 杨斌 | Repair device for repair points with different sizes of flow passage components of self-adaptive water turbine |
| CN114887861A (en) * | 2022-04-28 | 2022-08-12 | 玉溪大红山矿业有限公司 | Repairing material and repairing method for wear surface of inner wall of end cover at material inlet and outlet ends of ball mill |
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Application publication date: 20150819 |
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