CN103981518B - Pump seals axle sleeve erosion resistant laser cladding method with machine - Google Patents
Pump seals axle sleeve erosion resistant laser cladding method with machine Download PDFInfo
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- CN103981518B CN103981518B CN201410209149.0A CN201410209149A CN103981518B CN 103981518 B CN103981518 B CN 103981518B CN 201410209149 A CN201410209149 A CN 201410209149A CN 103981518 B CN103981518 B CN 103981518B
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- axle sleeve
- erosion resistant
- cladding
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Abstract
The present invention proposes a kind of pump machine envelope axle sleeve erosion resistant laser cladding method, including：Erosion resistant position to machine envelope axle sleeve is surface-treated；Cladding will be carried out by laser using nickel-based composite pow-der by the erosion resistant position after surface treatment；The chemical constituent of the nickel-based composite pow-der and the mass percent of component are as follows：C:0.5 1%, Cr：14 19%, Si：3.5 5%, B：3 4.5%, Cu：2 4%, Mo：2 4%, Fe：8 9%, CeO：0.3 0.5%, Ti：0.5 1%, W：2.5 3.5% and Ni：Surplus；Wet type mill processing will be carried out by the machine envelope axle sleeve after cladding step, after detection process.Pump is modified by laser melting coating with machine envelope axle sleeve, and hardness can reach HRC72 76, wear-resistant while the acid-base property corrosion of resistance to various chemical mediums.
Description
Technical field
The present invention relates to laser melting and coating technique field, a kind of pump machine envelope axle sleeve erosion resistant laser melting coating side is particularly related to
Method.
Background technology
Laser melting and coating technique is-kind be related to the multi-door subject such as light, mechanical, electrical, computer, material, physics, chemistry across
Section's new and high technology.It is proposed the sixties by eighties of last century, and the Section 1 that has been born in 1976 discusses the special of superlaser cladding
Profit.Into the eighties, laser melting and coating technique has obtained rapid development, with reference to the rapid prototyping process technology that cad technique rises,
For laser melting and coating technique has added new vitality again.
Further the subject matter that faces of application is laser melting and coating technique：1. laser melting and coating technique is not yet completely real at home
The main cause of existing industrialization is the unstability of quality of cladding layer.In laser cladding process, the speed of heating and cooling is exceedingly fast,
Maximum speed is up to 1012 DEG C/s. due to the difference of the thermograde and thermal coefficient of expansion of cladding layer and matrix material, Ke Neng
Number of drawbacks is produced in cladding layer, mainly including stomata, crackle, deformation and surface irregularity.2. the detection of laser cladding process
With implementation Automated condtrol.3. the cracking sensitivity of laser cladding layer, is still a problem for perplexing domestic and international researcher,
It is the obstacle of engineer applied and industrialization, although the formation expansion to crackle is studied, but control method aspect is also not
It is ripe.
In order that pump machine is sealed, and axle sleeve is wear-resisting, prior art mainly has following several ways：A, using carbide inserts set,
Such as carborundum or silicon nitride；B, electroplated coating；C, plasma oozes helium.Above-mentioned processing mode improves machine envelope axle to a certain extent
The wearability of set, but all there is respective defect.Carbide inserts set：Screw thread is beaten on sleeve outer circle surface, cementing at screw thread,
Hard alloy sleeve is tumbled in again, high temperature can be produced to be allowed to glue oxidation during due to running at high speed and caused mechanical seal position to loosen, be allowed to
Failure.Electroplated coating：Easily peel off, hardness is not low wear-resisting.Plasma nitriding：Rigidity layer is too thin.
In view of the defect of prior art, it is necessary to study that a kind of hardness is high, the pump of wear-resistant and antiacid caustic corrosion is sealed with machine
Axle sleeve.
The content of the invention
The present invention proposes that a kind of pump machine seals axle sleeve erosion resistant laser cladding method, solves machine envelope axle sleeve in the prior art
Hardness is low, not wear-resisting, not resistance to acids and bases corrosion problem.
The technical proposal of the invention is realized in this way：
A kind of pump machine seals axle sleeve erosion resistant laser cladding method, including：
Erosion resistant position to machine envelope axle sleeve is surface-treated；
Cladding will be carried out by laser using nickel-based composite pow-der by the erosion resistant position after surface treatment；Its
Middle power output is 1500-1800W, and focal length is 160-260mm, and powder sending quantity is 5-20g/min, and fusion temperature is 1050-1080
℃；The chemical constituent of the nickel-based composite pow-der and the mass percent of component are as follows：C:0.5-1%, Cr：14-19%, Si：
3.5-5%, B：3-4.5%, Cu：2-4%, Mo：2-4%, Fe：8-9%, CeO：0.3-0.5%, Ti：0.5-1%, W：2.5-
3.5% and Ni：Surplus；
Wet type mill processing will be carried out by the machine envelope axle sleeve after cladding step, after detection process.
Used as preferred technical scheme, the wavelength of the laser is 976nm.
Used as preferred technical scheme, the sweep speed of the laser is 0-12mm/s.
Used as preferred technical scheme, the granularity of the nickel-based composite pow-der is：-150/+280.
Used as preferred technical scheme, the cladding uses layer 2-3 single track laser cladding layer.
Used as preferred technical scheme, the protective gas used in the cladding process is helium.
Beneficial effect
(1) pump in the present invention is modified by laser melting coating with machine envelope axle sleeve, and hardness can reach HRC72-76, wear-resistant
The acid-base property corrosion of resistance to various chemical mediums simultaneously.
(2) alloying of nickel-based composite pow-der of the invention is to carry out austenite solution strengthening with Mo, Cr, Fe element；
Intermetallic compound Y ' phase precipitation strengths are obtained with Ti；Addition B realizes intercrystalline strengthening；Addition W can improve wearability；Addition rare earth
Element improves warm antioxidant and corrosivity.
Brief description of the drawings
In order to illustrate more clearly of embodiment of the present invention or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the invention, for those of ordinary skill in the art, is not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
The process chart of Fig. 1 embodiment of the present invention 1.
Icon in figure：
The coaxial automatic powder feeding device of 1- lasers, 2- digital control systems, 3- cladding layers, 4- digital cameras, 5- laser beams, 6-,
7- protective gas, 8- cladding thickness Infrared Detectors, 9- matrixes, 10- molten baths, 11- operating desks, 12- coaxial powder-feedings work head.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
The equipment used in following embodiments can commercially be commercially available.Improvement of the invention is laser melting coating
The fit applications of mode and nickel-based composite pow-der.Wherein nickel-based composite pow-der be inventor by many experiments, spend greatly
The end formulation that amount energy just determines.The alloying of nickel-based composite pow-der is that to carry out austenite solid solution with Mo, Cr, Fe element strong
Change；Intermetallic compound Y ' phase precipitation strengths are obtained with Ti；Addition B realizes intercrystalline strengthening；Addition W can improve wearability；Addition
Rare earth element improves warm antioxidant and corrosivity.
Embodiment 1
A kind of pump machine seals axle sleeve erosion resistant laser cladding method (shown in Figure 1), including：
Step S1：Erosion resistant position to machine envelope axle sleeve is surface-treated；Specially to needing what laser melting coating was modified
Workpiece is unilateral to be cut into groove, and gash depth is 0.3-1.5mm；Groove is cleaned using acetone, the greasy dirt for removing surface is miscellaneous
Matter.
Step S2：Equipment 2000W high-power semiconductor lasers.
Cladding will be carried out by laser using nickel-based composite pow-der by the erosion resistant position after step S1 surface treatments,
Cladding uses 2 layers of single track laser cladding layer, and molten bath is protected using helium in cladding process；Power output is 1500W, burnt
Away from being 160mm, wavelength is 976nm, and powder sending quantity is 5g/min, and sweep speed is 12mm/s, and fusion temperature is 1080 DEG C；
Following (the granularity of nickel-based composite pow-der of mass percent of the wherein chemical constituent of nickel-based composite pow-der and component
For：-150/+280)：C:0.5%th, Cr：19%th, Si：5%th, B：3%th, Cu：2%th, Mo：4%th, Fe：9%th, CeO：0.5%th, Ti：
1%th, W：3.5% and Ni：Surplus.
Step S3：Wet type mill processing will be carried out by the machine envelope axle sleeve after step S2 cladding steps.Quality testing：To cladding
Machine envelope axle sleeve afterwards carries out quality testing, confirms that institute's cladding position quality reaches use requirement.
Embodiment 2
A kind of pump machine seals axle sleeve erosion resistant laser cladding method, including：
Step S1：Erosion resistant position to machine envelope axle sleeve is surface-treated；Specially to needing what laser melting coating was modified
Workpiece is unilateral to be cut into groove, and gash depth is 2-4mm；Groove is cleaned using acetone, the greasy dirt impurity on surface is removed.
Step S2：Equipment 2000W high-power semiconductor lasers.
Cladding will be carried out by laser using nickel-based composite pow-der by the erosion resistant position after step S1 surface treatments,
Cladding uses 3 layers of single track laser cladding layer, and (cladding thickness is according to sweep speed and send for 0.1-1mm for the thickness of individual layer cladding layer
Powder amount is controlled), molten bath is protected using helium in cladding process；Power output is 1800W, and focal length is 260mm, and wavelength is
976nm, powder sending quantity is 20g/min, and fusion temperature is 1050 DEG C；
Following (the granularity of nickel-based composite pow-der of mass percent of the wherein chemical constituent of nickel-based composite pow-der and component
For：-150/+280)：C:1%th, Cr：14%th, Si：3.5%th, B：4.5%th, Cu：4%th, Mo：2%th, Fe：8%th, CeO：0.3%th,
Ti：0.5%th, W：2.5% and Ni：Surplus.
Step S3：Wet type mill processing will be carried out by the machine envelope axle sleeve after step S2 cladding steps.Quality testing：To cladding
Machine envelope axle sleeve afterwards carries out quality testing, confirms that institute's cladding position quality reaches use requirement.
Embodiment 3
The process of embodiment 3 is same with embodiment 1, and its difference is as follows：
Technological parameter in cladding process：Power output is 1600W, and focal length is 200mm, and wavelength is 976nm, and powder sending quantity is
15g/min, sweep speed is 5mm/s, and fusion temperature is 1060 DEG C.
The chemical constituent of nickel-based composite pow-der and the mass percent of component are following, and (granularity of nickel-based composite pow-der is：-
150/+280)：C:0.8%th, Cr：16%th, Si：4%th, B：4%th, Cu：3%th, Mo：4%th, Fe：9%th, CeO：0.4%th, Ti：
0.8%th, W：3% and Ni：Surplus；
Step S3：Wet type mill processing will be carried out by the machine envelope axle sleeve after step S2 cladding steps.Quality testing：To cladding
Machine envelope axle sleeve afterwards carries out quality testing, confirms that institute's cladding position quality reaches use requirement.
Pump in the present invention is modified by laser melting coating with machine envelope axle sleeve, and hardness can reach HRC72-76, resistance to variousization
The acid-base property corrosion of work medium.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (3)
1. a kind of pump machine seals axle sleeve erosion resistant laser cladding method, including：
Erosion resistant position to machine envelope axle sleeve is surface-treated；
Cladding will be carried out by laser using nickel-based composite pow-der by the erosion resistant position after surface treatment；It is wherein defeated
Go out power for 1500-1800W, focal length is 160-260mm, and powder sending quantity is 5-20g/min, and sweep speed is 12mm/s, fusing temperature
Spend is 1050-1080 DEG C；The chemical constituent of the nickel-based composite pow-der and the mass percent of component are as follows：C：0.8-1%,
Cr：14-19%, Si：3.5-5%, B：3-4.5%, Cu：2-4%, Mo：2-4%, Fe：8-9%, CeO：0.3-0.5%, Ti：
0.5-1%, W：2.5-3.5% and Ni：Surplus；The granularity of the nickel-based composite pow-der is：-150/+280；The cladding
During the protective gas that uses be helium；
Wet type mill processing will be carried out by the machine envelope axle sleeve after cladding step, after detection process.
2. a kind of pump according to claim 1 seals axle sleeve erosion resistant laser cladding method with machine, it is characterised in that described to swash
The wavelength of light device is 976nm.
3. a kind of pump according to claim 1 seals axle sleeve erosion resistant laser cladding method with machine, it is characterised in that described molten
Cover using layer 2-3 single track laser cladding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410209149.0A CN103981518B (en) | 2014-05-16 | 2014-05-16 | Pump seals axle sleeve erosion resistant laser cladding method with machine |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201410209149.0A CN103981518B (en) | 2014-05-16 | 2014-05-16 | Pump seals axle sleeve erosion resistant laser cladding method with machine |
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| CN103981518B true CN103981518B (en) | 2017-06-27 |
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| CN106676515B (en) * | 2015-11-11 | 2019-03-15 | 上海大陆天瑞激光表面工程有限公司 | A kind of gas turbine turbine cylinder split laser sealing coating material |
| CN106756994A (en) * | 2016-12-02 | 2017-05-31 | 江苏科技大学 | A kind of nickel-based composite pow-der of laser cladding coating and the method for prepares coating |
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| CN102453898B (en) * | 2010-10-26 | 2015-10-14 | 沈阳大陆激光技术有限公司 | A kind of on-the-spot laser repair method of mill housing |
| CN102392242A (en) * | 2011-11-23 | 2012-03-28 | 中国海洋石油总公司 | Laser cladding technology of pump shaft of sea water pump |
| CN102899664A (en) * | 2012-11-15 | 2013-01-30 | 丹阳惠达模具材料科技有限公司 | Laser cladding alloy powder and preparation method thereof |
| CN103498149A (en) * | 2013-09-05 | 2014-01-08 | 江苏翌煜能源科技发展有限公司 | Laser cladding method for surface of lead screw |
| CN103498143A (en) * | 2013-09-05 | 2014-01-08 | 江苏翌煜能源科技发展有限公司 | Laser cladding method for surface of automobile engine crankshaft |
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