CN1077207A - Hot spray material of high-wearing and self-melting alloy - Google Patents
Hot spray material of high-wearing and self-melting alloy Download PDFInfo
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- CN1077207A CN1077207A CN 92108370 CN92108370A CN1077207A CN 1077207 A CN1077207 A CN 1077207A CN 92108370 CN92108370 CN 92108370 CN 92108370 A CN92108370 A CN 92108370A CN 1077207 A CN1077207 A CN 1077207A
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Abstract
A kind of hot spray material of high-wearing and self-melting alloy, be specially adapted to adopt oxy-acetylene that the matrix metal workpiece is carried out thermospray to satisfy the needs of engineering machinery operation under serious abrasive wear working condition, its composition is: C:1.0/2.5 B:2.5/4.5 Si:3.0/5.0
Cr：15/30 Mi：20/55 Co：≤40
Mo:2/10 W:1.0/8 Fe: surplus
Description
A kind of hot spray material of high-wearing and self-melting alloy, the present invention is specially adapted to adopt oxy-acetylene that the matrix metal workpiece is carried out thermospray to satisfy the needs of engineering machinery operation under serious abrasive wear working condition.
The present domestic oxy-acetylene thermal spraying material that can supply in batches, Ni60 for example, Ni62, Fe60 etc., though the HRc value also can reach 55～62, these materials are applicable to the abrasive wear under skimming wear or the low-stress situation, in the next difficult adaptation of heavily stressed or serious abrasive wear working condition.
Purpose of the present invention will be developed and a kind ofly can satisfy operation needs under the serious abrasive wear working condition of engineering machinery, and can adopt the high-wearing and self-melting alloy spray material of oxy-acetylene thermospray.
Commercially available the most frequently used a kind of its composition of nickel-base antiwear self-fluxing alloy Ni60 is as follows at present:
(all alloy ingredient content all are weight percentage unless otherwise noted in this specification sheets)
C B Si Cr Fe Ni
0.7/1.0 3.5/4.5 3.5/5.5 15/16≤14 surplus
The oxy-acetylene sprayed coating hardness of this alloy is HRc55～60,
Analyze above-mentioned alloy, we find, because the content of strong carbide forming element is not enough in the alloy, carbon content is on the low side, thereby making carbide hard phase amount deficiency in the tissue, austenitic matrix intensity and hardness are too low, are unable to undergo the intensive abrasive wear to cause thermally sprayed coating.
Measure of the present invention is suitably to strengthen solid solution matrix, and on the solid solution matrix of having strengthened the suitable high rigidity carbide hard phase of distribution some amount, we consider in the alloy ingredient design for this reason:
1, boron and silicon:
Boron and silicon are the elements of flowability when guaranteeing the molten certainly and reduction alloy melting point of powdered alloy in reflow process with the increase alloy molten, thereby still contain boron and two elements of silicon in the present invention, but this two constituent content is unsuitable too high, otherwise alloy spraying coating fragility significantly increases, and too high silicone content will obviously produce greying, sprayed coating hardness is descended on the contrary, and boron content design in the present invention is 2.5～4.5%, and silicon is 3.0～5.5%.
2, cobalt and chromium
Cobalt has the alloy substrate intensity of raising and toughness, improve matrix and carbide, boride hard wettability and strengthen the oxidation-resistance of alloy of the present invention under the remelting state mutually, thereby in alloy of the present invention, added cobalt, but the content of cobalt can not be too high, otherwise alloy melting point is risen, the self-fluxing nature variation, in the present invention the content of cobalt be defined as≤40%.
Chromium also is a kind of raising matrix strength and flexible alloying element, and chromium still impels and form the hard phase, improves the important alloying element of alloy wear-resisting of the present invention, thereby has kept the composition of chromium in the present invention, and it is defined as 10～30%.If the content of chromium surpasses 30%, equally also can make alloy self-fluxing nature variation.
3, molybdenum and tungsten
Strong carbide forming element molybdenum and tungsten have been added in the present invention, why the Ni60 alloy spraying coating can not satisfy the needs of operation under the strong abrasive wear working condition, the quantity not sufficient of the carbide hard phase that its very big reason is a high rigidity, and again can not be too high because of the content of the over-all properties boron of considering alloy, silicon, so that former hardness of alloy and wear resistance are placed restrictions on.Alloy of the present invention has been owing to added six sides that can make alloy form high rigidity in remelting postcooling process, the molybdenum of cubic alloy carbide and tungstenalloy element, thereby the hardness of alloy spraying coating and wear resisting property are improved.Be defined in 2～10% scopes by the molybdenum content of testing alloy of the present invention, W content is defined in 1.0～8% scopes, and we find, will produce the fragility that worsens self-fluxing nature and increase sprayed coating if molybdenum and tungsten surpass the afore mentioned rules scope.
4, carbon:
Carbon is the important element that forms carbide hard phase, the alloying element content of design according to the present invention, and carbon content of the present invention is defined as 1.0～2.5% scopes.
5, nickel:
Nickel remains basic alloy element of the present invention.
According to above-mentioned, from the alloy comprehensive mechanical performance, and the consideration of alloy self-fluxing nature, the invention is characterized in that through test of many times research its composition regulation is as follows:
C B Si Cr Ni
1.0/2.5 2.5/4.5 3.0/5.0 15/30 20/55
Co Mo W Fe
≤ 40 2,/10 1.0/8 surpluses
Be embodiments of the invention below:
Adopt induction furnace melting and water atomization method to prepare the high-wearing and self-melting alloy powder of following composition
Above-mentioned alloy can adopt oxy-acetylene to carry out thermospray, the similar Ni60 of self-fluxing nature, and the physicals situation of sprayed coating is as follows after tested:
As seen from the above, compare with the Ni60 sprayed coating, the HRc value of alloy spraying coating of the present invention is high.Abrasion loss has obvious decline under the stand under load situation, it is special when load is increased to 17 kilograms, the rapid wearing of Ni60 sprayed coating, and the abrasion loss of sprayed coating of the present invention is still little than the abrasion loss under the Ni6010 kilogram load condition, thereby the present invention is specially adapted to the engineering machinery of operation under the serious abrasive wear working condition.For example adopt thermospray of the present invention to give protection in engineering machinery excavator bucket tooth surface.Adopt the Ni60 wearing and tearing in the past obviously; and adopt the embodiment of the invention 5 and 6 spraying spiral pump wet shot machine rotors to give protection; work-ing life, (being the sprayed concrete amount) was up to more than 45 cubic metres; and under the same working condition; rich chromium cast iron rotor work-ing life is about 35 cubic metres; the abrasion loss of rich chromium cast iron when 10 kilograms and 17 kilograms of load is respectively 66.77mg and 97.10mg, 71.57 and 103.53 low than Ni60.
Therefore other part of the rapid wear workpiece of the strong abrasive wear working condition of all genus and equipment all can adopt the present invention to repair or be protected.For example coal pulverizer roll, engineering machinery bucket tooth, spray mortar concrete rotor, ball grinding machine lining board, large blast furnace coke oven fan blade, mine crusher etc., above-mentioned workpiece adopts rich chromium cast iron, high mangaenese steel manufacturing mostly.Manufacturing process complexity, cost are higher.If use the material manufacturing that engineering property is good, cost is low instead, surface spraying abrasion-proof self-fluxing alloy material more then, certainly will just may save cost greatly, but at present commercially available Ni60 spray material is at the needs that are difficult to satisfy operation under the strong abrasive wear working condition aspect hardness and the abrasive wear behavior.Thereby appearance of the present invention just can simplify aforesaid device manufacturing process greatly, reduces cost, and can prolong service life of equipment.Can repair repeatedly in addition repeatedly and use.
Claims (1)
1, a kind of hot spray material of high-wearing and self-melting alloy is characterized in that, alloy ingredient is (weight percent):
C B Si Cr Ni
1.0/2.5 2.5/4.5 3.0/5.0 15/30 20/55
Co No W Fe
≤ 40 2,/10 1.0/8 surpluses
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108370 CN1077207A (en) | 1992-04-08 | 1992-04-08 | Hot spray material of high-wearing and self-melting alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108370 CN1077207A (en) | 1992-04-08 | 1992-04-08 | Hot spray material of high-wearing and self-melting alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1077207A true CN1077207A (en) | 1993-10-13 |
Family
ID=4943481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92108370 Pending CN1077207A (en) | 1992-04-08 | 1992-04-08 | Hot spray material of high-wearing and self-melting alloy |
Country Status (1)
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| CN (1) | CN1077207A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851733A (en) * | 2010-04-19 | 2010-10-06 | 项大秋 | Molten spray coating method and excavating tooth |
| CN102433497A (en) * | 2011-12-18 | 2012-05-02 | 陕西天元材料保护科技有限公司 | High carbon and high tungsten self-melting alloy powder |
| CN102828138A (en) * | 2012-09-14 | 2012-12-19 | 兰州理工合金粉末有限责任公司 | Nickel-chrome-molybdenum-tungsten alloy powder for plasma surfacing |
| CN104233175A (en) * | 2014-09-12 | 2014-12-24 | 芜湖鼎瀚再制造技术有限公司 | Remanufacturing process of concavely rolled roller |
| CN105316616A (en) * | 2015-10-28 | 2016-02-10 | 安徽省三方新材料科技有限公司 | Method for preparing abrasion-resistant coating on surface of bucket tooth |
| CN107937860A (en) * | 2018-01-12 | 2018-04-20 | 河北工业大学 | A kind of preparation method of argon arc remelting Fe base wearing layers |
| CN108220754A (en) * | 2018-01-23 | 2018-06-29 | 宁波华帆金属材料科技有限公司 | A kind of high alloy iron-based Self-fusing powder |
| CN112705845A (en) * | 2020-12-18 | 2021-04-27 | 吉林大学 | Wear-resistant coating and preparation method and application thereof |
-
1992
- 1992-04-08 CN CN 92108370 patent/CN1077207A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851733A (en) * | 2010-04-19 | 2010-10-06 | 项大秋 | Molten spray coating method and excavating tooth |
| CN102433497A (en) * | 2011-12-18 | 2012-05-02 | 陕西天元材料保护科技有限公司 | High carbon and high tungsten self-melting alloy powder |
| CN102433497B (en) * | 2011-12-18 | 2015-11-18 | 陕西天元智能再制造股份有限公司 | High-carbon high-tungsten alloy Self-fusing powder |
| CN102828138A (en) * | 2012-09-14 | 2012-12-19 | 兰州理工合金粉末有限责任公司 | Nickel-chrome-molybdenum-tungsten alloy powder for plasma surfacing |
| CN104233175A (en) * | 2014-09-12 | 2014-12-24 | 芜湖鼎瀚再制造技术有限公司 | Remanufacturing process of concavely rolled roller |
| CN105316616A (en) * | 2015-10-28 | 2016-02-10 | 安徽省三方新材料科技有限公司 | Method for preparing abrasion-resistant coating on surface of bucket tooth |
| CN107937860A (en) * | 2018-01-12 | 2018-04-20 | 河北工业大学 | A kind of preparation method of argon arc remelting Fe base wearing layers |
| CN108220754A (en) * | 2018-01-23 | 2018-06-29 | 宁波华帆金属材料科技有限公司 | A kind of high alloy iron-based Self-fusing powder |
| CN112705845A (en) * | 2020-12-18 | 2021-04-27 | 吉林大学 | Wear-resistant coating and preparation method and application thereof |
| CN112705845B (en) * | 2020-12-18 | 2022-02-01 | 吉林大学 | Wear-resistant coating and preparation method and application thereof |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |