CN101671805B - Method for arranging Mo2FeB2 metal ceramic coating on conical surface of aluminum alloy synchronizer tooth ring - Google Patents
Method for arranging Mo2FeB2 metal ceramic coating on conical surface of aluminum alloy synchronizer tooth ring Download PDFInfo
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- CN101671805B CN101671805B CN2009101143482A CN200910114348A CN101671805B CN 101671805 B CN101671805 B CN 101671805B CN 2009101143482 A CN2009101143482 A CN 2009101143482A CN 200910114348 A CN200910114348 A CN 200910114348A CN 101671805 B CN101671805 B CN 101671805B
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Abstract
The invention provides a method for arranging a Mo2FeB2 metal ceramic coating on a conical surface of an aluminum alloy synchronizer tooth ring. Thermal spraying powders are formed by the following components with ratio by mass: 25-40 percent of FeB, 35-50 percent of Mo, 1-10 percent of Ni, 1-10 percent of Cr and 10-20 percent of Fe. The sum of the components is 100 percent; the powder granularity is 5-20 microns; a thermal spraying process has the following parameters: the spraying distance is 80-200mm, the spraying angle is ranged from 80 degrees to 90 degrees, the moving speed of a spray gun is 10-30cm/s, the spraying thickness every time is 0.05-0.10mm, and the total thickness of the coating is 0.1-2mm; and after the coating is subjected to high frequency induction heating treatment at the temperature of 700-800 DEG C, molten metal atoms in the coating and metal atoms on the surface of a substrate have enough energy to break through an Al2O<3> film layer on an interface, drastic mixing action occurs among the atoms to generate a metallurgy combination area, thereby forming a metallurgy combination interface. The prepared Mo2FeB2 metal ceramic coating has hardness greater than 1200HV, bonding strength greater than 100Mpa and excellent wear resistance.
Description
Technical field
The present invention relates to a kind of automobile aluminium alloy synchronizer ring gear conical surface, particularly Mo is set at conical surface of aluminum alloy synchronizer tooth ring
2FeB
2The method of metal-ceramic coating.
Background technology
Automobile synchronizer is a kind of assembly in the automotive transmission, and, advantage of low manufacturing cost reliable, simple in structure with its gearshift is applied in the mechanical type automotive transmission widely, is the indispensable vitals of automobile gear shift.Synchro converter ring then needs toughness, frictional property and resistance to elevated temperatures preferably as major part.Synchro converter ring is in the past all made with copper or sandblast aluminium dust (silk), because copper and molybdenum powder (silk) are very high as non-ferrous metal and exotic material manufacturing cost, and its performance also is difficult to be improved.
Summary of the invention
The object of the present invention is to provide and a kind ofly Mo is set at conical surface of aluminum alloy synchronizer tooth ring
2FeB
2The method of metal-ceramic coating, this method anchoring strength of coating height, it is little to engage thermal stresses.
Another object of the present invention is to provide a kind of conical surface with method for preparing to be provided with Mo
2FeB
2The automobile aluminium alloy synchronizer ring gear of metal-ceramic coating, this synchro converter ring has the excellent abrasive energy, and cost is low.
The technical scheme that realizes the object of the invention is:
A kind of Mo that is provided with
2FeB
2The aluminium alloy synchronizer ring gear of metal-ceramic coating, it is by aluminium alloy synchronizer ring gear matrix and the Mo that is arranged on the matrix
2FeB
2Metal-ceramic coating is formed.
The present invention is provided with Mo at conical surface of aluminum alloy synchronizer tooth ring
2FeB
2The method of metal-ceramic coating may further comprise the steps:
(1) the aluminium alloy synchronizer ring gear matrix conical surface is carried out oil removing and sandblasting;
(2) carry out thermospray at the above-mentioned conical surface, hot spray powder is formed and mass percent is: FeB25%～40%, Mo35%～50%, Ni 1%～10%, Cr1%～10%, Fe10%～20%, each component sum is 100%, and powder size 5～20 μ m form through mixing; The hot-spraying techniques parameter is: spray distance is 80～200mm, and spray angle is 80 °～90 °, and the spray gun translational speed is 10～30cm/s, each coating thickness 0.05mm～0.10mm;
(3) the coating high-frequency induction heating is handled, and Heating temperature is 700-800 ℃.
Thermospray described in the step (2), total coating thickness 0.1mm～2mm; The method of described thermospray comprises oxygen-acetylene flame sprayed coating or plasma spraying or hypersonic flame spraying;
The invention has the beneficial effects as follows: the present invention based on the reactive spray principle, produces chemical reaction: 2FeB+2Mo=Mo at conical surface of aluminum alloy synchronizer tooth ring by adopting heat spraying method
2FeB
2+ Fe obtains Mo
2FeB
2Metal-ceramic coating, wherein Mo
2FeB
2Be the hard phase of coating, Ni, Cr, Fe are the bonding phase of coating, play a supportive role, and make coating in conjunction with more firm, improve the wear resisting property of conical surface of aluminum alloy synchronizer tooth ring.Handle by high-frequency induction heating, make the atoms metal of molten metal atom and matrix surface in the coating have enough energy and break through Al on the interface
2O
3Violent mixing effect takes place in thin film layer between the atom, generate a metallurgical binding district, forms metallurgical bonding interface.The Mo that the present invention obtains
2FeB
2Metal-ceramic coating hardness＞1200HV, bonding strength＞100MPa, tool excellent abrasive energy.
Description of drawings
Fig. 1 is the Mo of the embodiment of the invention
2FeB
2The microstructure synoptic diagram of metal-ceramic coating;
Fig. 2 is the Mo of the embodiment of the invention
2FeB
2The interface structure synoptic diagram of metal-ceramic coating;
Fig. 3 is that the conical surface of the present invention is provided with Mo
2FeB
2The structural representation of the aluminium alloy synchronizer ring gear of metal-ceramic coating.
Embodiment
The present invention is described further below in conjunction with drawings and Examples, but be not the qualification to content of the present invention.
Embodiment 1:
Synchronizer toothed ring matrix material: aluminium alloy
At the above-mentioned matrix conical surface Mo is set
2FeB
2The method of metal-ceramic coating is as follows:
(1) earlier the synchronizer toothed ring matrix conical surface is carried out oil removing and sandblasting, then
(2) carry out thermospray:
The mass percent that dusty spray is formed is: 35%FeB, 40%Mo, 2%Ni, 3%Cr, 20%Fe; Powder size 10 μ m; Make through mixing, adopt the oxy-acetylene flame method to carry out thermospray at the matrix conical surface; The oxygen-acetylene flame sprayed coating processing parameter: spray distance is 100mm, and spray angle is 80 °～90 °, and the spray gun translational speed is 15cm/s, and each coating thickness is 0.05-0.10mm, and total coating thickness is 0.15mm;
(3) high-frequency induction heating coating process parameter: Heating temperature: 700 ℃.
The Mo of present embodiment
2FeB
2The microstructure of metal-ceramic coating as shown in Figure 1; Its interface structure as shown in Figure 2.
Shown in Figure 3, aluminium alloy synchronizer ring gear of the present invention is by aluminium alloy synchronizer ring gear matrix 1 and the Mo that is arranged on this matrix 1
2FeB
2Metal-ceramic coating 2 is formed.
Embodiment 2:
The mass percent that dusty spray is formed is: 25%FeB, 50%Mo, 3%Ni, 4%Cr, 18%Fe; Powder size 15 μ m;
The plasma spray coating process parameter: spray distance is 150mm, and spray angle is 80 °～90 °, and the spray gun translational speed is 15cm/s, and each coating thickness is 0.05-0.10mm, and total coating thickness is 0.20mm;
High-frequency induction heating coating process parameter: Heating temperature: 750 ℃.
All the other are with embodiment 1.
Embodiment 3:
The mass percent that dusty spray is formed is: 40%FeB, 35%Mo, 5%Ni, 5%Cr, 15%Fe; Powder size 20 μ m;
The hypersonic flame spraying processing parameter: spray distance is 100mm, and spray angle is 80 °～90 °, and the spray gun translational speed is 15cm/s, and each coating thickness is 0.05-0.10mm, and total coating thickness is 0.20mm;
High-frequency induction heating coating process parameter: Heating temperature: 800 ℃.
All the other are with embodiment 1.
Claims (2)
1. at conical surface of aluminum alloy synchronizer tooth ring Mo is set
2FeB
2The method of metal-ceramic coating may further comprise the steps:
(1) the aluminium alloy synchronizer ring gear matrix conical surface is carried out oil removing and sandblasting;
(2) carry out thermospray at the above-mentioned conical surface, the composition of hot spray powder and mass percent thereof are: FeB25%～40%, Mo35%～50%, Nil%～10%, Crl%～10%, Fe10%～20%, each component sum is 100%, and powder size 5～20 μ m make through mixing; Described hot-spraying techniques parameter is: spray distance is 80～200mm, and spray angle is 80 °～90 °, and the spray gun translational speed is 10～30cm/s, each coating thickness 0.05mm～0.10mm; The method of described thermospray is oxygen-acetylene flame sprayed coating or plasma spraying or hypersonic flame spraying method;
(3) the coating high-frequency induction heating is handled, Heating temperature is 700-800 ℃.
2. the conical surface with the described method preparation of claim 1 is provided with Mo
2FeB
2The automobile aluminium alloy synchronizer ring gear of metal-ceramic coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101143482A CN101671805B (en) | 2009-08-29 | 2009-08-29 | Method for arranging Mo2FeB2 metal ceramic coating on conical surface of aluminum alloy synchronizer tooth ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101143482A CN101671805B (en) | 2009-08-29 | 2009-08-29 | Method for arranging Mo2FeB2 metal ceramic coating on conical surface of aluminum alloy synchronizer tooth ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101671805A CN101671805A (en) | 2010-03-17 |
| CN101671805B true CN101671805B (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101143482A Expired - Fee Related CN101671805B (en) | 2009-08-29 | 2009-08-29 | Method for arranging Mo2FeB2 metal ceramic coating on conical surface of aluminum alloy synchronizer tooth ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581963A (en) * | 2018-11-15 | 2019-04-05 | 天津大学 | The selection method of the multiple dimensioned grinding technique parameter of ceramic material based on ceramic material grinding database platform |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10392685B2 (en) * | 2013-10-31 | 2019-08-27 | The Regents Of The University Of Michigan | Composite metal alloy material |
| CN104264092A (en) * | 2014-09-04 | 2015-01-07 | 天津大学 | Preparation method of Mo2FeB2-base metal ceramic coating applied to surface of die steel |
-
2009
- 2009-08-29 CN CN2009101143482A patent/CN101671805B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581963A (en) * | 2018-11-15 | 2019-04-05 | 天津大学 | The selection method of the multiple dimensioned grinding technique parameter of ceramic material based on ceramic material grinding database platform |
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