CN105177567A - Preparation method of wear-resistant coating on surface of steel base - Google Patents
Preparation method of wear-resistant coating on surface of steel base Download PDFInfo
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- CN105177567A CN105177567A CN201510616699.9A CN201510616699A CN105177567A CN 105177567 A CN105177567 A CN 105177567A CN 201510616699 A CN201510616699 A CN 201510616699A CN 105177567 A CN105177567 A CN 105177567A
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Abstract
The invention discloses a preparation method of a wear-resistant coating on the surface of a steel base. The method comprises the steps that a base material surface layer and cladding materials added to the base material surface layer are heated and fused together through a high-energy laser beam for laser cladding and are condensed rapidly, and therefore the coating good in metallurgical bond is formed. When a laser cladding technology is adopted for preparing a modified layer, the wild phase WC is easy to fuse, and therefore equiaxial butterfly-shaped tungsten carbide and chrome carbide eutectic compounds are dispersed and separated out of the cladding layer. By the adoption of the laser cladding treatment technology, the steel base is coated with the high-quality coating which is resistant to corrosion and wear, high in bonding strength and low in energy loss, so that the using performance of a metal component is improved, and the effective service life of the metal component is prolonged.
Description
Technical field
The present invention relates to production facility of coalmine field of material technology, specifically belong to a kind of preparation method of steel substrate surface wear-resistant coating.
Background technology
Metallic substance is the structured material that modern industry is most widely used.In use, hardware usually bears erosive wear and the corrosive nature of media particle, as in fuel-burning power plant, mine and petrochemical enterprise for transmitting easily worn part etc. in mud, particulate dust, corrosive gases, the metallic conduit of liquid, valve and the pump housing and pump.Abrasion and corrosion is two major reasons reducing material lifetime, increase production cost.
Prior art is mainly (1) hypersonic flame spraying tungsten carbide ceramics coating for the process of hardware anticorrosion antiwear: mixed firing after being entered combustion chamber using kerosene or propane by aperture as fuel and oxygen, with supersonic flame, WC-Co-Cr powdered alloy is melted to accelerate, be injected into a kind of heat spraying method that workpiece surface forms coating; (2) oxyacetylene welding: at self-fluxing alloyed powders such as workpiece surface spraying NiCrBSi, FeCrBSi or CoCrBSi, then remelting is heated to coating with oxygen, acetylene for fuel.The temperature of surfacing is higher, changes the hardness of matrix, destroys matrix, and need preheating before general weldering, postwelding need do corresponding thermal treatment, and production efficiency is low, not easily produces in batches.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of preparation method of steel substrate surface wear-resistant coating, adopt Laser Cladding Treatment technique, go out anticorrosion, wear-resisting, high bond strength, low energy losses high-quality coating in base steel coating, thus improve the use properties of hardware and effective operation life.
The technical solution used in the present invention is as follows:
A preparation method for steel substrate surface wear-resistant coating, the high energy laser beam that described method comprises laser melting coating by base material top layer with add heat fused together with the cladding material on it to and condensation rapidly, thus form the good coating of metallurgical binding; The first step, is machined to specified dimension according to drawing by base steel, and the burn into wearing surface then in this component working processes reserved spraying groove;
Second step, employing purification, roughening treatment technique carry out pre-treatment to base steel reserved spraying groove surface spraying position;
3rd step, base steel amorphous alloy material is heated to plastic state or molten state by thermal spraying treatment, then stands compressed-air actuated acceleration, makes affined particle line impact reserved spraying recess-based surface; When adopting laser melting and coating process to prepare modified layer, wild phase WC is easy to melt, the tungsten carbide making the axles such as the inner disperse educt of cladding layer butterfly-shaped and chromium carbide cocrystalization compound.
Described base steel is austenitic stainless steel body.
Described coating nickel-base alloy modified layer, is wherein added with rare earths CeO_2.
Compared with the prior art, beneficial effect of the present invention is as follows:
The present invention adopts Laser Cladding Treatment technique, goes out anticorrosion, wear-resisting, high bond strength, low energy losses high-quality coating in base steel coating, thus improves the use properties of hardware and effective operation life.
Embodiment
A preparation method for steel substrate surface wear-resistant coating, the high energy laser beam that described method comprises laser melting coating by base material top layer with add heat fused together with the cladding material on it to and condensation rapidly, thus form the good coating of metallurgical binding; The first step, is machined to specified dimension according to drawing by base steel, and the burn into wearing surface then in this component working processes reserved spraying groove; Second step, employing purification, roughening treatment technique carry out pre-treatment to base steel reserved spraying groove surface spraying position; 3rd step, base steel amorphous alloy material is heated to plastic state or molten state by thermal spraying treatment, then stands compressed-air actuated acceleration, makes affined particle line impact reserved spraying recess-based surface; When adopting laser melting and coating process to prepare modified layer, wild phase WC is easy to melt, the tungsten carbide making the axles such as the inner disperse educt of cladding layer butterfly-shaped and chromium carbide cocrystalization compound; Base steel is austenitic stainless steel body; Described coating nickel-base alloy modified layer, is wherein added with rare earths CeO_2.
Laser cladding layer has finer and close tiny tissue, therefore its hardness and wear resistance are all better than plasma surfacing layer, Ni60 alloy cladding layer average hardness is 1157HV, and plasma surfacing layer is 898HV, the highest 13 times of being about plasma surfacing layer of cladding layer relative wear resistance.The interpolation of rare earths CeO_2 improves the wear resistance of modified layer, and the relative wear resistance of laser cladding layer is about 3 times that do not add CeO2 cladding layer.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. the preparation method of a steel substrate surface wear-resistant coating, it is characterized in that: the high energy laser beam that described method comprises laser melting coating by base material top layer with add heat fused together with the cladding material on it to and condensation rapidly, thus form the good coating of metallurgical binding; The first step, is machined to specified dimension according to drawing by base steel, and the burn into wearing surface then in this component working processes reserved spraying groove;
Second step, employing purification, roughening treatment technique carry out pre-treatment to base steel reserved spraying groove surface spraying position;
3rd step, base steel amorphous alloy material is heated to plastic state or molten state by thermal spraying treatment, then stands compressed-air actuated acceleration, makes affined particle line impact reserved spraying recess-based surface.
2. the preparation method of a kind of steel substrate surface wear-resistant coating according to claim 1, is characterized in that: described base steel is austenitic stainless steel body.
3. the preparation method of a kind of steel substrate surface wear-resistant coating according to claim 1, is characterized in that: described coating nickel-base alloy modified layer, is wherein added with rare earths CeO_2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616699.9A CN105177567A (en) | 2015-09-24 | 2015-09-24 | Preparation method of wear-resistant coating on surface of steel base |
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| CN201510616699.9A CN105177567A (en) | 2015-09-24 | 2015-09-24 | Preparation method of wear-resistant coating on surface of steel base |
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| CN105177567A true CN105177567A (en) | 2015-12-23 |
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| CN201510616699.9A Pending CN105177567A (en) | 2015-09-24 | 2015-09-24 | Preparation method of wear-resistant coating on surface of steel base |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283047A (en) * | 2016-11-18 | 2017-01-04 | 无锡明盛纺织机械有限公司 | A kind of laser melting coating preparation method of NiCrBSiMnCe erosion resistant sucker rod |
| CN106350761A (en) * | 2016-10-13 | 2017-01-25 | 南京工程学院 | Laser cladding layer preparation method based on synchronous roller compaction |
| CN106756996A (en) * | 2016-12-07 | 2017-05-31 | 山东大学 | A kind of rare earth modified laser cladding layer and its preparation technology |
| CN109338291A (en) * | 2018-11-06 | 2019-02-15 | 深圳市森泰金属技术有限公司 | A kind of preparation method of the metalwork of the black dura mater of band IP |
| CN110410590A (en) * | 2019-08-07 | 2019-11-05 | 徐州工程学院 | A kind of compound pipeline complex pipeline and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350761A (en) * | 2016-10-13 | 2017-01-25 | 南京工程学院 | Laser cladding layer preparation method based on synchronous roller compaction |
| CN106283047A (en) * | 2016-11-18 | 2017-01-04 | 无锡明盛纺织机械有限公司 | A kind of laser melting coating preparation method of NiCrBSiMnCe erosion resistant sucker rod |
| CN106756996A (en) * | 2016-12-07 | 2017-05-31 | 山东大学 | A kind of rare earth modified laser cladding layer and its preparation technology |
| CN106756996B (en) * | 2016-12-07 | 2019-07-23 | 山东大学 | A kind of rare earth modified laser cladding layer and its preparation process |
| CN109338291A (en) * | 2018-11-06 | 2019-02-15 | 深圳市森泰金属技术有限公司 | A kind of preparation method of the metalwork of the black dura mater of band IP |
| CN110410590A (en) * | 2019-08-07 | 2019-11-05 | 徐州工程学院 | A kind of compound pipeline complex pipeline and preparation method thereof |
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Application publication date: 20151223 |