CN107649515A - A kind of hot rolling for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings method - Google Patents
A kind of hot rolling for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings method Download PDFInfo
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- CN107649515A CN107649515A CN201710916292.7A CN201710916292A CN107649515A CN 107649515 A CN107649515 A CN 107649515A CN 201710916292 A CN201710916292 A CN 201710916292A CN 107649515 A CN107649515 A CN 107649515A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/383—Cladded or coated products
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Abstract
A kind of hot rolling for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings method.The present invention relates to a kind of preparation method of titanium alloy surface high hardness wear-resisting composite coating.High the invention aims to solve conventional titanium alloy surface high-hard antiwear coating preparation technology cost, the flexible deformation of component, it is poor that coating is combined with matrix, and coating layer thickness is limited and the problem of environmental pollution.Method：First, contact surface is treated to be polished；2nd, high temperature stove heat, stainless steel residual crust is removed；3rd, hot rolling；4th, annealing heat-treats.The present invention is used for titanium alloy surface hot rolling wear-resistant coating.
Description
Technical field
The present invention relates to a kind of preparation method of titanium alloy surface high hardness wear-resisting composite coating.
Background technology
Titanium or titanium alloy has the low (4.5g/cm of density3), specific strength is high, corrosion resistance is good, it is heat-resist, without many such as magnetic
Advantage, had a wide range of applications in fields such as Aeronautics and Astronautics, navigation, automobile, chemical industry, biomedicines.However, titanium or titanium alloy
With the metal phase ratio such as steel and high temperature alloy, it may have hardness is not high, the shortcomings of wearing no resistance, the application on wear member by
Limitation；For at present frequently with the material such as abrasion-resistant stee, weight is big to carry mobile inconvenient, and makes the increase of component energy consumption, property
It can reduce；The processing of titanium alloy surface hardened artiwear produces frictional dissipation when can significantly reduce matrix stand under load, and it substitutes abrasion-resistant stee
And the component such as nickel alloy is advantageously implemented lightweight.Currently used several techniques prepare wear-resistant coating and problems be present：
1st, titanium alloy surface wearable coating heating being prepared using laser melting coating mode to be exceedingly fast with cooling velocity, coating structure is uniformly tiny,
But equipment is expensive, and prepare environmental requirement height, complex process；In addition, molten bath solidification shrinkage is also easy to produce flexural deformation, especially greatly
The cladding of size members；2nd, plasma technology cladding efficiency high, but noise is big, and ultraviolet can produce by force ozone pollution；3rd, thermal jet
It is not fine and close and low with substrate combinating strength that painting technology obtains coating；4th, the coating that physical chemistry gas phase deposition technology is obtained
Thickness is small, it is difficult to meets top load use condition.
Rolling is commonly used for a technology of hardware shaping, hardware is extended by prescribed direction and deforms,
Temperature is accurately controlled according to the performance characteristics of material, using hot rolling and heat treatment after suitable roll is equipped with and can lift the power of material
Learn performance.Using the high temperature and deformation characteristicses of hot rolling technique, by it preparing titanium alloy surface high-hard antiwear coating so as to subtract
The frictional dissipation of weak titanium alloy, compared with the technologies such as conventional laser cladding, plasma cladding, thermal spraying, have fairly obvious
Advantage：1st, the deformation technique of titanium alloy and wearing layer preparation technology are combined into a step process, improve energy utilization rate；2nd, deform
Strengthen effect to be combined with surface abrasion resistance hardening effect, the mechanical property of comprehensive lifting material；3rd, design different raw material with
And rolling mill practice, the wearing layer of different content hard phase is can obtain, wearability is controllable；4th, can be avoided by rolling because solidification is received
Caused by contracting the problem of member bending deformation；5th, the technique can prepare the wearing layer of large-scale titanium alloy component, and to environment
It is it is required that low.Therefore, hot rolling technique application value in terms of titanium alloy is deformed with the comprehensively modifying of surface abrasion resistance processing is high, and
It is adapted to be generalized to industrial production.However, at present on preparing the research of titanium alloy surface wearable coating also not using hot rolling technique
Appear in the newspapers.
The content of the invention
The present invention is high in order to solve conventional titanium alloy surface high-hard antiwear coating preparation technology cost, and component is flexible
Deformation, it is poor that coating is combined with matrix, and coating layer thickness is limited and the problem of environmental pollution, and provides a kind of hot rolling for titanium alloy
The method of the wear-resisting TiFe/Ti composite coatings of high surface hardness.
The present invention a kind of hot rolling for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings method press with
Lower step is carried out：
The first, two pieces of stainless steel plates are processed into the chi to match with Ti alloy blanks surface by the way of machining
It is very little, then the contacting surface waiting of stainless steel plate and Ti alloy blanks is polished respectively, obtains the Ti alloy blanks of clean surface
With the stainless steel plate of two pieces of clean surfaces；The thickness of the stainless steel plate is 5~10mm；
2nd, Ti alloy blanks are placed among the stainless steel plate of two pieces of clean surfaces, will be overlayed after to be contacted face together
Together, pending part is obtained, pending part is put into high temperature furnace furnace temperature is risen to 1100~1300 DEG C with 10 DEG C/min speed
Afterwards, 30~120min is incubated under conditions of being 1100~1300 DEG C in temperature, peeling of then coming out of the stove, obtains treating hot-rolling stock；
3rd, treat hot-rolling stock and carry out hot rolling, hot-rolled temperature is kept in course of hot rolling, and rolling reduction is more than 900 DEG C
20%~80%；
4th, the material after hot rolling is subjected to annealing heat-treats, obtains the tiny TiFe particle dispersions distribution of alloy surface
TiFe/Ti composite anti-wear coatings.
Beneficial effects of the present invention：
The present invention is relatively low using Ti-Fe eutectic temperatures, and the two compound (TiFe) has higher hardness and well resistance to
Mill property, design a kind of composite wear-resistant layer of TiFe compounds hardening titanium alloy substrate；With stainless steel materials and titanium alloy blank
For original material, the preparation of wearing layer is carried out；By controlling heating-up temperature, soaking time and rolling reduction to obtain not
With the composite wear-resistant layer of TiFe particle sizes and content；TiFe/TC4 composite anti-wear coatings Rockwell hardness is up to HRC52, and TC4
The hardness of alloy substrate is only HRC31, therefore titanium alloy surface hardness is effectively lifted；And can also be by controlling TiFe
The size of hard phase further lifts coating hardness with content.
Brief description of the drawings
Fig. 1 is the low power microscopic appearance figure of TiFe/Ti composite anti-wear coatings described in embodiment one；
Fig. 2 is Fig. 1 partial enlarged drawing；
Fig. 3 is the design sketch polished using emery wheel TiFe/Ti composite anti-wear coatings.
Embodiment
Embodiment one：A kind of hot rolling of present embodiment is compound for titanium alloy surface high hardness wear-resisting TiFe/Ti
The method of material coating is carried out according to the following steps：
The first, two pieces of stainless steel plates are processed into the chi to match with Ti alloy blanks surface by the way of machining
It is very little, then the contacting surface waiting of stainless steel plate and Ti alloy blanks is polished respectively, obtains the Ti alloy blanks of clean surface
With the stainless steel plate of two pieces of clean surfaces；
2nd, Ti alloy blanks are placed among the stainless steel plate of two pieces of clean surfaces, will be overlayed after to be contacted face together
Together, pending part is obtained, pending part is put into high temperature furnace furnace temperature is risen to 1100 with 8 DEG C/min~12 DEG C/min speed
After~1300 DEG C, 30~120min is incubated under conditions of being 1100~1300 DEG C in temperature, peeling of then coming out of the stove, obtains treating hot rolling
Part；
3rd, treat hot-rolling stock and carry out hot rolling, hot-rolled temperature is kept in course of hot rolling, and rolling reduction is more than 900 DEG C
20%~80%；
4th, the material after hot rolling is subjected to annealing heat-treats, obtains the tiny TiFe particle dispersions distribution of alloy surface
TiFe/Ti composite anti-wear coatings.
Present embodiment is relatively low using Ti-Fe eutectic temperatures, and the two compound (TiFe) is with higher hardness and well
Wearability, design the composite wear-resistant layer of TiFe compounds hardening titanium alloy substrate a kind of；With stainless steel materials and titanium alloy
Blank is original material, carries out the preparation of wearing layer；Mainly pass through three flows：It is that the cleaning of original material surface decontamination is flat first
Integralization operates, and is followed by high temperature furnace heating heating process, and last hot rolling technology of coming out of the stove；Corresponding heat treatment pair is equipped with after rolling
Materials microstructure carries out improvement improving performance.
Because Ti-Fe eutectic temperatures are relatively low in preparation process, be heated to 1100 DEG C just start stainless steel with it is titanium alloy-based
Eutectic liquid phase is produced at the contact interface of body, as the extension of soaking time can produce more eutectic liquid phases；Then come out of the stove
Skin, unreacted stainless steel is removed, now because surface and air contact cooling are very fast, the material surface shiny red after heating
It is dimmed so that Ti-Fe eutectic liquid phases solidify the TiFe compound layers to form high rigidity, but compound layer fragility now it is big and
And the combination of Ti alloy substrates is poor；In order to further solve the problems, such as that fragility with associativity difference, is rolled greatly immediately after peeling,
Can be broken with refining by TiFe compound layers, and the good Ti alloy substrates surface of ductility is uniformly embedded into by extruding
On.Due to, now Ti alloy substrates temperature still very it is high (>900 DEG C) cracking phenomena is less prone in the operation of rolling, if during peeling
Between it is longer cause temperature to reduce amplitude and can melt down again greatly to be heated to more than 900 DEG C and rolled, the material surface after rolling is wear-resisting
Layer is then to be evenly distributed on by tiny TiFe compound particles in Ti alloy substrates, good by crushing and being inlaid into plasticity
Ti matrixes in can significantly improve the toughness of wearing layer and the associativity with matrix.Meanwhile the operation of rolling can preferably control material
The shape of material, avoid and bend change when large-size components prepare wearing layer using deposition techniques caused by the solidification shrinkage of molten bath
The shortcomings that shape.
Embodiment two：Present embodiment is unlike embodiment one：Monolithic stainless steel in step 1
The thickness of plate is 5~10mm.Other steps and parameter are identical with embodiment one.
Embodiment three：Present embodiment is unlike embodiment one or two：It will wait to locate in step 2
Reason part is put into high temperature furnace rises to 1100 DEG C with 10 DEG C/min speed by furnace temperature.Other steps and parameter and embodiment one
Or two is identical.
Embodiment four：Unlike one of present embodiment and embodiment one to three：Will in step 2
Pending part is put into high temperature furnace rises to 1200 DEG C with 10 DEG C/min speed by furnace temperature.Other steps and parameter and specific embodiment party
One of formula one to three is identical.
Embodiment five：Unlike one of present embodiment and embodiment one to four：Rolled in step 3
Deflection processed is 30%.Other steps and parameter are identical with one of embodiment one to four.
Embodiment six：Unlike one of present embodiment and embodiment one to five：Rolled in step 3
Deflection processed is 40%.Other steps and parameter are identical with one of embodiment one to five.
Embodiment seven：Unlike one of present embodiment and embodiment one to six：Rolled in step 3
Deflection processed is 50%.Other steps and parameter are identical with one of embodiment one to six.
Embodiment eight：Unlike one of present embodiment and embodiment one to seven：Rolled in step 3
Deflection processed is 60%.Other steps and parameter are identical with one of embodiment one to seven.
Embodiment nine：Unlike one of present embodiment and embodiment one to eight：Institute in step 4
The technique for stating annealing heat-treats is：Air cooling after insulation 60min under conditions of being 750 DEG C in temperature, then by after annealing
Material surface is polished.Other steps and parameter are identical with one of embodiment one to eight.
Beneficial effects of the present invention are verified with following examples：
Embodiment one：A kind of hot rolling is pressed for the method for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Following steps are carried out：
The first, two pieces of stainless steel plates are processed into the chi to match with Ti alloy blanks surface by the way of machining
It is very little, then the contacting surface waiting of stainless steel plate and Ti alloy blanks is polished respectively, obtains the Ti alloy blanks of clean surface
With the stainless steel plate of two pieces of clean surfaces；The thickness of monolithic stainless steel plate is 8mm in step 1；
2nd, Ti alloy blanks are placed among the stainless steel plate of two pieces of clean surfaces, will be overlayed after to be contacted face together
Together, pending part is obtained, pending part is put into high temperature furnace furnace temperature is risen to 1100~1300 DEG C with 10 DEG C/min speed
Afterwards, 60min is incubated under conditions of being 1200 DEG C in temperature, peeling of then coming out of the stove, obtains treating hot-rolling stock；
3rd, treat hot-rolling stock and carry out hot rolling, hot-rolled temperature is kept in course of hot rolling, and rolling reduction is more than 900 DEG C
60%；
4th, the material after hot rolling is subjected to annealing heat-treats, obtains the tiny TiFe particle dispersions distribution of alloy surface
TiFe/Ti composite anti-wear coatings；The technique of annealing heat-treats described in step 4 is：It is incubated under conditions of being 750 DEG C in temperature
Air cooling after 60min, then the material surface after annealing is polished.
The present embodiment is by controlling heating-up temperature, soaking time and rolling reduction to obtain different TiFe particles chis
The very little and composite wear-resistant layer of content；TiFe/TC4 composite anti-wear coatings Rockwell hardness is up to HRC52 after testing, and TC4 alloy-baseds
The hardness of body is only HRC31, therefore titanium alloy surface hardness is effectively lifted, it can be seen that grinder buffing from Fig. 1~Fig. 3
During hard particles be gradually worn become it is tiny, therefore in wear process hard TiFe particles Ti matrixes can be played carrying protect
Shield acts on, and reduces rate of depreciation；And can also be hard by controlling the sizes of TiFe hard phases further to lift with content coating
Degree.
Claims (9)
1. a kind of hot rolling is for the method for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings, it is characterised in that heat
The method of the standby titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings of rolling is carried out according to the following steps：
The first, two pieces of stainless steel plates are processed into the size to match with Ti alloy blanks surface by the way of machining, so
The contacting surface waiting of stainless steel plate and Ti alloy blanks is polished respectively afterwards, obtain clean surface Ti alloy blanks and two pieces
The stainless steel plate of clean surface；
2nd, Ti alloy blanks are placed among the stainless steel plate of two pieces of clean surfaces, will be stacked together after to be contacted face together,
Pending part is obtained, pending part is put into high temperature furnace with 8 DEG C/min~12 DEG C/min speed furnace temperature is risen to 1100~
After 1300 DEG C, 30~120min is incubated under conditions of being 1100~1300 DEG C in temperature, peeling of then coming out of the stove, obtains treating hot rolling
Part；
3rd, treat hot-rolling stock and carry out hot rolling, hot-rolled temperature is kept in course of hot rolling more than 900 DEG C, rolling reduction 20%
~80%；
4th, the material after hot rolling is subjected to annealing heat-treats, obtains the TiFe/Ti of the tiny TiFe particle dispersions distribution of alloy surface
Composite anti-wear coating.
2. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that the thickness of monolithic stainless steel plate is 5~10mm in step 1.
3. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that pending part is put into high temperature furnace in step 2 furnace temperature is risen to 1100 with 10 DEG C/min speed
℃。
4. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that pending part is put into high temperature furnace in step 2 furnace temperature is risen to 1200 with 10 DEG C/min speed
℃。
5. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that in step 3 rolling reduction be 30%.
6. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that in step 3 rolling reduction be 40%.
7. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that in step 3 rolling reduction be 50%.
8. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that in step 3 rolling reduction be 60%.
9. a kind of hot rolling according to claim 1 is for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coatings
Method, it is characterised in that the technique of annealing heat-treats described in step 4 is：It is incubated under conditions of being 750 DEG C in temperature
Air cooling after 60min, then the material surface after annealing is polished.
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| CN201710916292.7A CN107649515B (en) | 2017-09-30 | 2017-09-30 | A kind of hot rolling for titanium alloy surface high hardness wear-resisting TiFe/Ti composite coating method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561529A (en) * | 2022-03-09 | 2022-05-31 | 西部金属材料股份有限公司 | Preparation method of Ti-Ni-Cr high-hardness titanium alloy plate |
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Cited By (1)
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| CN114561529A (en) * | 2022-03-09 | 2022-05-31 | 西部金属材料股份有限公司 | Preparation method of Ti-Ni-Cr high-hardness titanium alloy plate |
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