CN102936725A - Preparation method of micro-nano metal ceramic coating on surface of stainless steel1Cr18Ni9Ti - Google Patents
Preparation method of micro-nano metal ceramic coating on surface of stainless steel1Cr18Ni9Ti Download PDFInfo
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- CN102936725A CN102936725A CN201210437545XA CN201210437545A CN102936725A CN 102936725 A CN102936725 A CN 102936725A CN 201210437545X A CN201210437545X A CN 201210437545XA CN 201210437545 A CN201210437545 A CN 201210437545A CN 102936725 A CN102936725 A CN 102936725A
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Abstract
The invention discloses a preparation method of a micro-nano metal ceramic coating on the surface of stainless steel1Cr18Ni9Ti. The method includes preprocessing the surface of the stainless steel1Cr18Ni9Ti; and using an electric spark surface cladding device, adopting a WC-8Co cemented carbide electrode bar as an anode, and electric-spark-cladding the micro-nano metal ceramic coating on the surface of the stainless steel1Cr18Ni9Ti under an argon shield environment. According to the method, the micro-nano metal ceramic coating is electric-spark-cladded on the surface of the stainless steel1Cr18Ni9Ti, the coating is compact and uniform in structure high in surface hardness, corrosion resistant, and the abradability is improved remarkably compared with basis materials, so that the service life of the stainless steel1Cr18Ni9Ti is prolonged.
Description
Technical field
The present invention relates to the preparation method of the micro-nano metal-ceramic coating of metal material surface, be specifically related to the preparation method of the micro-nano metal-ceramic coating of a kind of stainless steel 1Cr18Ni9Ti surface cladding.
Background technology
Abrasion is one of common failure mode of component of machine, and annual metallic substance because of attrition reaches tens million of tons, loses huge.Especially in hydro project, the fluid machinery flow passage components are subject to the acting in conjunction such as the frequent bump, wearing and tearing, cavitation of silt carrying flow and accelerate to damage and cause component failure, and its destructiveness has caused domestic and international investigator's common concern.Stainless steel 1Cr18Ni9Ti relies on its performance characteristics development very fast, all is widely used in industry-by-industry.The flow passage components such as water pump impeller selection on, high rigidity, high strength, high tenacity and chemical stability are good, the parent that the material that the anti-cavitation abrasiveness is good more and more obtains everybody looks at.But during water pump was made at present, the main flow passage components majority such as impeller was still selected stainless material.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating, use electric discharge surface cladding equipment that stainless steel 1Cr18Ni9Ti matrix is carried out surface Hardening Treatment, thereby surface hardness, wear resistance, the solidity to corrosion of stainless steel 1Cr18Ni9Ti are significantly improved, prolong its work-ing life, reduce the wastage, save cost.
The present invention is by the following technical solutions:
A kind of preparation method of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating comprises the steps:
The first step is carried out pre-treatment to stainless steel 1Cr18Ni9Ti surface;
Second step uses electric discharge surface cladding equipment, under the environment of argon shield, adopts WC-8Co Wimet electrode bar as anode, at the micro-nano metal-ceramic coating of stainless steel 1Cr18Ni9Ti electric spark on surface cladding.
As preferably, in the described second step, the processing parameter of electrical spark cladding equipment is: output rating 300 ~ 4000W, cladding voltage are that 60 ~ 220V and cladding frequency are 700 ~ 2000Hz, and sedimentation rate is 1 ~ 5min/cm
2, the shielding gas argon flow amount is set in 3 ~ 15L/min.
As preferably, described micro-nano metal-ceramic coating and matrix form metallurgical binding, bonding strength high (〉=350MPa), coating is evenly fine and close, coating hardness high (HRC 70-75),, erosion rate is less than 16 g/m
2H, erosion resistance improves 10 times than body material.
Described micro-nano metal-ceramic coating and matrix form metallurgical binding, the bonding strength height (〉=350MPa), coating is evenly fine and close, coating hardness high (HRC 70-75), and erosion rate is less than 16 g/m
2H, erosion resistance improves 10 times than body material.
As preferably, described pre-treatment step is: the cleaning workpiece surface, decontamination is derusted.
Beneficial effect of the present invention is:
The electric discharge surface melting and coating technique is to get involved the novel practical spark technology that the process characteristics such as welding, spraying plating or element infiltration are integrated, utilize electrical spark cladding equipment that electrode materials is deposited on certain body material, obtain mechanical property and chemical property and far surpass the coating of body material original surface performance, thereby significantly improve the work-ing life of equipment Reliability and elongated component.
The electric discharge surface melting and coating technique that the present invention adopts can not make workpiece surface anneal of material or distortion, and the characteristics of its shock heating quenching make cladding layer produce the fine particles with nano-scale, and weave construction is evenly fine and close, has improved the performance of cladding layer.Coating hardness can reach HRC 70-75, and coating and matrix form metallurgical binding, and bonding strength is large, and its wear resistance, solidity to corrosion improve, and prolong work-ing life.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can obtain from the practice of the present invention instruction.
Embodiment:
Below the present invention is described in further detail with embodiment:
Body material is stainless steel 1Cr18Ni9Ti, and electrode is selected WC-8Co Wimet electrode bar, utilizes electric discharge surface cladding equipment to prepare high rigidity, high-wearing feature, the micro-nano metal-ceramic coating of high anti-corrosion.
Technological process is as follows: at first pre-treatment is carried out on stainless steel 1Cr18Ni9Ti surface; remove oil stain, dirt and oxide skin; then use electric discharge surface cladding equipment; under the environment of argon shield; adopt WC-8Co Wimet electrode bar as anode, stainless steel 1Cr18Ni9Ti matrix is that negative electrode prepares micro-nano metal-ceramic coating.
Embodiment 1:
Processing step of the present invention is as follows:
The first step is carried out pre-treatment to stainless steel 1Cr18Ni9Ti surface, removes oil stain, dirt and oxide skin;
Second step; use electric discharge surface cladding equipment; under the environment of argon shield; adopt WC-8Co Wimet electrode bar as anode; stainless steel 1Cr18Ni9Ti matrix is negative electrode, and electrical spark cladding equipment output rating is 800W, and deposition voltage (being cladding voltage) is 100V; the cladding frequency is 700Hz, and sedimentation rate is 2min/cm
2, the protection argon flow amount is set in 6L/min.Electrode and stainless steel base Contact produce electrical spark, the energy of spark discharge makes the electrode materials of contact area and body material transient melting, gasification, and then forms metallurgical bonding layer, and bonding strength reaches 350MPa, coating hardness reaches HRC 70, and erosion rate is less than 16 g/m
2H.
Embodiment 2:
Processing step of the present invention is as follows:
The first step is carried out pre-treatment to stainless steel 1Cr18Ni9Ti surface, removes oil stain, dirt and oxide skin;
Second step; use electric discharge surface cladding equipment; under the environment of argon shield; adopt WC-8Co Wimet electrode bar as anode; stainless steel 1Cr18Ni9Ti matrix is negative electrode, and electrical spark cladding equipment output rating is 2000W, and deposition voltage is 120V; the cladding frequency is 800Hz, and sedimentation rate is 3min/cm
2, the protection argon flow amount is set in 7L/min.Electrode and stainless steel base Contact produce electrical spark, and the energy of spark discharge makes the electrode materials and body material transient melting, gasification of contact area, and then the formation metallurgical bonding layer.Bonding strength reaches 400MPa, and coating hardness reaches HRC 73, and erosion rate is 15.5 g/m
2H.
Embodiment 3:
Processing step of the present invention is as follows:
The first step is carried out pre-treatment to stainless steel 1Cr18Ni9Ti surface, removes oil stain, dirt and oxide skin;
Second step; use electric discharge surface cladding equipment; under the environment of argon shield; adopt WC-8Co Wimet electrode bar as anode; stainless steel 1Cr18Ni9Ti matrix is negative electrode, and electrical spark cladding equipment output rating is 300W, and deposition voltage is 60V; the cladding frequency is 700Hz, and sedimentation rate is 1min/cm
2The protection argon flow amount is set in 5L/min.Electrode and stainless steel base Contact produce electrical spark, and the energy of spark discharge makes the electrode materials and body material transient melting, gasification of contact area, and then the formation metallurgical bonding layer.Bonding strength reaches 450MPa, and coating hardness reaches HRC 73.5, and erosion rate is 15 g/m
2H.
Embodiment 4:
Processing step of the present invention is as follows:
The first step is carried out pre-treatment to stainless steel 1Cr18Ni9Ti surface, removes oil stain, dirt and oxide skin;
Second step; use electric discharge surface cladding equipment; under the environment of argon shield; adopt WC-8Co Wimet electrode bar as anode; stainless steel 1Cr18Ni9Ti matrix is negative electrode, and electrical spark cladding equipment output rating is 4000W, and deposition voltage is 220V; the cladding frequency is 2000Hz, and sedimentation rate is 5min/cm
2, the protection argon flow amount is set in 15L/min.Electrode and stainless steel base Contact produce electrical spark, and the energy of spark discharge makes the electrode materials and body material transient melting, gasification of contact area, and then the formation metallurgical bonding layer.Bonding strength reaches 500MPa, and coating hardness reaches HRC 75, and erosion rate is 14.5 g/m
2H.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the preparation method of a stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating is characterized in that: comprise the steps:
The first step is carried out pre-treatment to stainless steel 1Cr18Ni9Ti surface;
Second step uses electric discharge surface cladding equipment, under the environment of argon shield, adopts WC-8Co Wimet electrode bar as anode, at the micro-nano metal-ceramic coating of stainless steel 1Cr18Ni9Ti electric spark on surface cladding.
2. the preparation method of a kind of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating according to claim 1, it is characterized in that: in the described second step, the processing parameter of electrical spark cladding equipment is: output rating 300 ~ 4000W, cladding voltage is that 60 ~ 220V and cladding frequency are 700 ~ 2000Hz, and sedimentation rate is 1 ~ 5min/cm
2, the shielding gas argon flow amount is set in 3 ~ 15L/min.
3. the preparation method of a kind of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating according to claim 1 and 2, it is characterized in that: described micro-nano metal-ceramic coating and matrix form metallurgical binding, bonding strength 〉=350MPa, coating hardness HRC 70-75, erosion rate is less than 16 g/m
2H.
4. the preparation method of a kind of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating according to claim 1 and 2, it is characterized in that: described pre-treatment step is: the cleaning workpiece surface, decontamination is derusted.
5. the preparation method of a kind of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating according to claim 1 and 2, it is characterized in that: the processing parameter of described electrical spark cladding equipment is: output rating 800W, cladding voltage is 100V, the cladding frequency is 700Hz, and sedimentation rate is 2min/cm
2, the shielding gas argon flow amount is set in 6L/min.
6. the preparation method of a kind of stainless steel 1Cr18Ni9Ti surface micronano metal-ceramic coating according to claim 1 and 2, it is characterized in that: the processing parameter of described electrical spark cladding equipment is: output rating 2000W, cladding voltage is 120V, the cladding frequency is 800Hz, and sedimentation rate is 3min/cm
2, the shielding gas argon flow amount is set in 3 ~ 15L/min.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540933A (en) * | 2013-09-30 | 2014-01-29 | 华北水利水电大学 | Preparation method of functionally gradient ceramic wear-resistant coating on surface of Cr-Ni-Mo series stainless steel |
| CN103602984A (en) * | 2013-11-18 | 2014-02-26 | 华北水利水电大学 | Method for depositing hard coating on pulse electrode for stainless steel pump vanes |
| CN107989822A (en) * | 2017-12-29 | 2018-05-04 | 上海英佛曼纳米科技股份有限公司 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
| CN110387544A (en) * | 2019-07-17 | 2019-10-29 | 吉林大学 | A kind of TiCN cermet composite coating preparation method based on electric spark deposition |
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| CN101555580B (en) * | 2009-05-19 | 2011-10-12 | 北京科技大学 | Electrospark hardening method of surface of metal roll |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101555580B (en) * | 2009-05-19 | 2011-10-12 | 北京科技大学 | Electrospark hardening method of surface of metal roll |
Non-Patent Citations (2)
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| 姜伟 等: "不锈钢的电火花表面强化", 《现代制造工程》 * |
| 高玉新 等: "铸铁电火花沉积WC-8Co超细涂层的组织及性能", 《功能材料》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540933A (en) * | 2013-09-30 | 2014-01-29 | 华北水利水电大学 | Preparation method of functionally gradient ceramic wear-resistant coating on surface of Cr-Ni-Mo series stainless steel |
| CN103540933B (en) * | 2013-09-30 | 2016-04-27 | 华北水利水电大学 | The preparation method of a kind of Cr-Ni-Mo system stainless steel surface Functional Graded Ceramics wear-resistant coating |
| CN103602984A (en) * | 2013-11-18 | 2014-02-26 | 华北水利水电大学 | Method for depositing hard coating on pulse electrode for stainless steel pump vanes |
| CN107989822A (en) * | 2017-12-29 | 2018-05-04 | 上海英佛曼纳米科技股份有限公司 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
| CN110387544A (en) * | 2019-07-17 | 2019-10-29 | 吉林大学 | A kind of TiCN cermet composite coating preparation method based on electric spark deposition |
| CN110387544B (en) * | 2019-07-17 | 2021-06-18 | 吉林大学 | Preparation method of titanium carbonitride metal ceramic composite coating based on electric spark deposition |
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Application publication date: 20130220 |