CN108115110A - One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting and preparation method thereof - Google Patents
One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting and preparation method thereof Download PDFInfo
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- CN108115110A CN108115110A CN201711415481.2A CN201711415481A CN108115110A CN 108115110 A CN108115110 A CN 108115110A CN 201711415481 A CN201711415481 A CN 201711415481A CN 108115110 A CN108115110 A CN 108115110A
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- ceramic layer
- die casting
- prestressed
- preparation
- stretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2209—Selection of die materials
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
Abstract
Have the invention discloses one kind and stretch prestressed ceramic layer anti-adhesive die casting and preparation method thereof, prestressed ceramic layer is stretched including die matrix and having for its surface；Metallurgical binding is formed by cladding method between die matrix and ceramic layer.Preparation comprises the following steps：1) oxide-film on die matrix surface is removed, it is spare after cleaning, drying；2) ceramic powders of preparation are overlying on the processed die matrix surface of step 1) using laser cladding, the pre-heat treatment prepares the metallurgical binding for having and stretching prestressed ceramic layer, realization ceramic layer and die matrix；3) it is cooled to room temperature, being made has stretching prestressed ceramic layer anti-adhesive die casting.The present invention has the advantages that production equipment and process is simple, and cladding, without carrying out under vacuum conditions, workpiece size is substantially unrestricted, therefore available for processed complex surface or large scale mold.The stretching prestressing force that prepared coating contains effectively raises thermal fatigue resistance.
Description
Technical field
The invention belongs to prestressing force coating anti-adhesive die casting manufacturing technology fields, and in particular to one kind, which has, to be stretched in advance
Stress ceramic layer anti-adhesive die casting and preparation method thereof.
Background technology
Due to die casting, die surface local temperature is high during processing and manufacturing, and alloys adhesion is on mold during depanning
It can not take out of, die surface has adhered to a laminated golden object, and causing the product respective surfaces of die casting, there are rough, coarse and recessed
The casting surface defect of convex injustice obtained nitriding by uniformly brushing anti-sticking 7 deduction and exemption wax or nitriding on mold cavity surface in the past
Layer and improve anti-adhesive properties, anti-sticky wax not only increases process, while influences yield and can not also ensure quality, since nitration case holds
Easy to fall off and itself brittleness is larger, and structure is not fine and close enough and infiltration layer is thin, in use easily failure.
If being surface-treated to die casting, the heat-resistant anti-fatigue performance of mold can be improved, so as to improve the quality of mold
And the service life.Die casting surface carries out rare earth surface hardening, and infiltration rate, strengthening surface and purification table are improved since rare earth element has
The multiple functions such as face, it has and greatly influences to improving die surface institutional framework, surface physics, chemistry and mechanical property,
Infiltration rate, strengthening surface, generation rare earth compound can be improved, while the illeffects for being distributed in trace impurity on crystal boundary can be eliminated,
Play a part of reinforcing and stablize mold mold cavity surface crystal boundary, so that the wearability of mold, thermal fatigue resistance significantly carry
Height, so as to increase substantially die life.But since the obtained coating brittleness of rare earth reinforced surface treatment itself is larger, structure
It is not fine and close and undesirable with the bond strength of die matrix, therefore whole coating performance needs to be further improved.
The content of the invention
Have it is an object of the invention to provide one kind and stretch prestressed ceramic layer anti-adhesive die casting and its preparation side
Method, the anti-adhesion of the die casting, abrasion performance, heat-resistant anti-fatigue performance are strong；This method is easy to operate, low for equipment requirements.
The present invention is to be achieved through the following technical solutions：
Have the invention discloses one kind and stretch prestressed ceramic layer anti-adhesive die casting, including die matrix and Qi Biao
Having for face stretches prestressed ceramic layer；Metallurgical binding is formed by cladding method between die matrix and ceramic layer.
Preferably, ceramic layer be using aluminium oxide, zirconium oxide, TiAlCN, SiC, titanium carbide, chromium oxide, TiNAlC,
NiCrBSi, titanium nitride, titanium oxide and ZrB2In one or more ceramic powders be made.
Preferably, ceramic layer be SiC ceramic layer, ingredient by percentage to the quality, including：0.1%~0.8% Pb,
0.02%~0.7% Bi, surplus SiC；Wherein, Pb elements and Bi elements are mainly distributed on ceramic surface, possess anti-adhesive
Property.
Preferably, stretch the thermal expansion strain that prestressing force is less than in heating process the 80% of ceramic layer.
Preferably, the thickness of ceramic layer is 25um~300um.
The invention also discloses it is above-mentioned have stretch prestressed ceramic layer anti-adhesive die casting preparation method, including with
Lower step：
1) oxide-film on die matrix surface is removed, it is spare after cleaning, drying；
2) ceramic powders of preparation are overlying on the processed die matrix surface of step 1) using laser cladding, at preheating
Reason prepares the metallurgical binding for having and stretching prestressed ceramic layer, realization ceramic layer and die matrix；
3) it is cooled to room temperature, being made has stretching prestressed ceramic layer anti-adhesive die casting.
Preferably, in step 2), the temperature of the pre-heat treatment is 150~900 DEG C.
Preferably, in step 2), the technological parameter of laser melting coating is：The granularity of powder be 0.154~0.045mm, laser
Beam is swing type, and laser power is 3~15KW, and sweep speed is 1.60~25mms-1, protective gas is inert gas.
Preferably, the inert gas is the mixed gas of helium, argon gas or the two.
Preferably, in step 1), the oxide-film on removal die matrix surface is to use 400#, 600#, 1000# successively
Sand paper polishes step by step to die surface；Using acetone soln ultrasonication, processing time is 15~25min for cleaning.
Compared with prior art, the present invention has technique effect beneficial below：
The present invention prepares one layer on die matrix surface by way of deposited metals the prestressed ceramic coating of stretching,
It can be adapted to by heat between ceramic coating and die matrix, tensile stress is generated in preparation process, die surface is pre- with stretching
Stress ceramic layer is metallurgical binding, which has excellent anti-adhesion, abrasion performance, thermal fatigue resistance
Energy can effectively improve 6-36 times of the service life of die casting, obtain the workpiece of high quality.
It is disclosed by the invention that there is the preparation method for stretching prestressed ceramic layer anti-adhesive die casting, there is production equipment
And the advantages of simple for process, and cladding, without carrying out under vacuum conditions, workpiece size is substantially unrestricted, therefore can be used for adding
Work complex surface or large scale mold.The stretching prestressing force that prepared coating contains effectively raises thermal fatigue resistance
It can so that die matrix obtains the workpiece of high quality in regime of elastic deformation or minimal amount of plastic deformation.
Description of the drawings
Fig. 1 is the structure diagram with stretching prestressed ceramic layer anti-adhesive die casting of the present invention.
Wherein, 1 is die matrix；2 be ceramic layer.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1, of the invention having stretches prestressed ceramic layer anti-adhesive die casting, including die matrix 1 and its
Having for surface stretches prestressed ceramic layer 2；Metallurgical binding is formed by cladding method between die matrix 1 and ceramic layer 2.
Embodiment 1
One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting：Including die matrix with having stretching prestressed
Ceramic layer；The ceramic layer, which is that aluminium oxide+TiNAlC is as main component, stretching prestressed ceramic coating, and it is small to stretch prestressing force
The 80% of mold hot expansion strain in heating process.The thickness of the stretching prestressed ceramic layer is 50um.It is small to stretch prestressing force
The weight percent of the aluminium oxide in ceramic layer of the 80% of mold hot expansion strain is 15% in heating process, and surplus is
TiNAlC, granularity are 250 mesh, are sufficiently mixed uniformly using ball mill preceding in laser melting coating.
The preparation process of the stretching prestressed ceramic layer on the die casting surface, processing step are：
A) polished step by step using the sand paper of 400#, 600#, 1000# and remove die surface oxide, remove die matrix table
The oxide-film in face, and with the supersonic cleaning matrix surface of acetone soln, make surface totally spare, scavenging period 15min.
B) the required powder of preparation is overlying on die surface, preheated, prepared and stretch prestressed ceramic layer, realize coating and base
The metallurgical binding of body, laser cladding technological parameter are：The granularity of powder is 0.154~0.045mm, and laser beam is swing type, is swashed
Luminous power is 5KW, sweep speed 3mms-1, protective gas He, preheating temperature is 200 DEG C or so.
C) it is cooled to room temperature.
Embodiment 2：
One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting, prestressed with carrying stretching including die matrix
Ceramic layer stretches prestressing force is less than mold hot expansion strain in heating process 80%；The ceramic layer is aluminium oxide+TiNAlC
It is as main component to have stretching prestressed ceramic coating.The thickness of the stretching prestressed ceramic layer is 80um.The oxygen in ceramic layer
The weight percent for changing aluminium is 15%, surplus TiNAlC, and granularity is 250 mesh, in laser melting coating preceding abundant using ball mill
It is uniformly mixed.
The preparation process of the stretching prestressed ceramic layer on the die casting surface, processing step are：
A) polished step by step using the sand paper of 400#, 600#, 1000# and remove die surface oxide, remove die matrix table
The oxide-film in face, and with the supersonic cleaning matrix surface of acetone soln, make surface totally spare, scavenging period 20min.
B) the required powder of preparation is overlying on die surface, preheated, prepared and stretch prestressed ceramic layer, realize coating and base
The metallurgical binding of body, laser cladding technological parameter are：The granularity of powder is 0.154~0.045mm, and laser beam is swing type, is swashed
Luminous power is 7KW, sweep speed 4mms-1, protective gas He, preheating temperature is 200 DEG C or so.
C) it is cooled to room temperature.
Embodiment 3：
One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting, prestressed with carrying stretching including die matrix
Ceramic layer is formed, and stretches prestressing force is less than mold hot expansion strain in heating process 80%；The ceramic layer be titanium oxide+
TiNAlC is as main component stretching prestressed ceramic coating.The thickness of the stretching prestressed ceramic layer is 50um.In ceramics
The weight percent of titanium oxide is 30% in layer, surplus TiNAlC, and granularity is 250 mesh, and ball milling is used preceding in laser melting coating
Machine is sufficiently mixed uniformly.
The preparation process of the stretching prestressed ceramic layer on the die casting surface, processing step are：
A) polished step by step using the sand paper of 400#, 600#, 1000# and remove die surface oxide, remove die matrix table
The oxide-film in face, and with the supersonic cleaning matrix surface of acetone soln, make surface totally spare, scavenging period 15min.
B) the required powder of preparation is overlying on die surface, preheated, prepared and stretch prestressed ceramic layer, realize coating and base
The metallurgical binding of body, laser cladding technological parameter are：The granularity of powder is 0.154~0.045mm, and laser beam is swing type, is swashed
Luminous power is 5KW, sweep speed 3mms-1, protective gas Ar, preheating temperature is 200 DEG C or so.
C) it is cooled to room temperature.
Embodiment 4：
One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting, prestressed with carrying stretching including die matrix
Ceramic layer stretches prestressing force is less than mold hot expansion strain in heating process 80%；The ceramic layer is titanium oxide+TiNAlC
It is as main component to have stretching prestressed ceramic coating.The thickness of the stretching prestressed ceramic layer is 80um.The oxygen in ceramic layer
The weight percent for changing titanium is 30%, surplus TiNAlC, and granularity is 250 mesh, in laser melting coating preceding abundant using ball mill
It is uniformly mixed.
The preparation process of the stretching prestressed ceramic layer on the die casting surface, processing step are：
A) polished step by step using the sand paper of 400#, 600#, 1000# and remove die surface oxide, remove die matrix table
The oxide-film in face, and with the supersonic cleaning matrix surface of acetone soln, make surface totally spare, scavenging period 20min.
B) the required powder of preparation is overlying on die surface, preheated, prepared and stretch prestressed ceramic layer, realize coating and base
The metallurgical binding of body, laser cladding technological parameter are：The granularity of powder is 0.154~0.045mm, and laser beam is swing type, is swashed
Luminous power is 7KW, sweep speed 4mms-1, protective gas is the mixed inert gas of He and Ar.Preheating temperature is 200 DEG C
Left and right.
C) it is cooled to room temperature.
Embodiment 5
One kind, which has, stretches prestressed ceramic layer anti-adhesive die casting, prestressed with carrying stretching including die matrix
Ceramic layer stretches prestressing force is less than mold hot expansion strain in heating process 80%；The ceramic layer is SiC ceramic layer.It should
The thickness for stretching prestressed ceramic layer is 300um.Include in ceramic layer：0.1%~0.8% Pb, 0.02%~0.7%
Bi, surplus SiC；Wherein, Pb elements and Bi elements are mainly distributed on ceramic surface, possess Adhesion Resistance.Granularity is 200 mesh,
It is sufficiently mixed uniformly using ball mill preceding in laser melting coating.
The preparation process of the stretching prestressed ceramic layer on the die casting surface, processing step are：
A) polished step by step using the sand paper of 400#, 600#, 1000# and remove die surface oxide, remove die matrix table
The oxide-film in face, and with the supersonic cleaning matrix surface of acetone soln, make surface totally spare, scavenging period 20min.
B) the required powder of preparation is overlying on die surface, preheated, prepared and stretch prestressed ceramic layer, realize coating and base
The metallurgical binding of body, laser cladding technological parameter are：The granularity of powder is 0.154~0.045mm, and laser beam is swing type, is swashed
Luminous power is 15KW, sweep speed 25mms-1, protective gas He.Preheating temperature is 500 DEG C or so.
Claims (10)
1. one kind, which has, stretches prestressed ceramic layer anti-adhesive die casting, which is characterized in that including die matrix (1) and its table
Having for face stretches prestressed ceramic layer (2)；Metallurgical junction is formed by cladding method between die matrix (1) and ceramic layer (2)
It closes.
2. according to claim 1 have stretching prestressed ceramic layer anti-adhesive die casting, which is characterized in that ceramic layer
(2) it is using aluminium oxide, zirconium oxide, TiAlCN, SiC, titanium carbide, chromium oxide, TiNAlC, NiCrBSi, titanium nitride, titanium oxide
And ZrB2In one or more ceramic powders be made.
3. according to claim 2 have stretching prestressed ceramic layer anti-adhesive die casting, which is characterized in that ceramic layer
(2) for SiC ceramic layer, ingredient by percentage to the quality, including：0.1%~0.8% Pb, 0.02%~0.7% Bi,
Surplus is SiC；Wherein, Pb elements and Bi elements are mainly distributed on ceramic surface, possess Adhesion Resistance.
4. having according to any one in claims 1 to 3 stretches prestressed ceramic layer anti-adhesive die casting, special
Sign is that ceramic layer (2) stretches 80% of prestressing force less than the thermal expansion strain in heating process.
5. having according to any one in claims 1 to 3 stretches prestressed ceramic layer anti-adhesive die casting, special
Sign is that the thickness of ceramic layer (2) is 25um~300um.
6. there is the preparation side for stretching prestressed ceramic layer anti-adhesive die casting described in any one in Claims 1 to 5
Method, which is characterized in that comprise the following steps：
1) oxide-film on die matrix surface is removed, it is spare after cleaning, drying；
2) ceramic powders of preparation are overlying on the processed die matrix surface of step 1) using laser cladding, the pre-heat treatment,
It prepares to have and stretches prestressed ceramic layer, realize the metallurgical binding of ceramic layer and die matrix；
3) it is cooled to room temperature, being made has stretching prestressed ceramic layer anti-adhesive die casting.
7. according to claim 6 have the preparation method for stretching prestressed ceramic layer anti-adhesive die casting, feature
It is, in step 2), the temperature of the pre-heat treatment is 150~900 DEG C.
8. according to claim 6 have the preparation method for stretching prestressed ceramic layer anti-adhesive die casting, feature
It is, in step 2), the technological parameter of laser melting coating is：The granularity of powder is 0.154~0.045mm, and laser beam is swing type,
Laser power is 3~15KW, and sweep speed is 1.60~25mms-1, protective gas is inert gas.
9. according to claim 8 have the preparation method for stretching prestressed ceramic layer anti-adhesive die casting, feature
It is, the inert gas is the mixed gas of helium, argon gas or the two.
10. according to claim 6 have the preparation method for stretching prestressed ceramic layer anti-adhesive die casting, feature
It is, in step 1), the oxide-film on removal die matrix surface is successively using the sand paper of 400#, 600#, 1000# to mold
It polishes step by step on surface；Using acetone soln ultrasonication, processing time is 15~25min for cleaning.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711415481.2A CN108115110B (en) | 2017-12-22 | 2017-12-22 | Anti-adhesion die-casting die with tensile prestressed ceramic layer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711415481.2A CN108115110B (en) | 2017-12-22 | 2017-12-22 | Anti-adhesion die-casting die with tensile prestressed ceramic layer and preparation method thereof |
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| CN108115110A true CN108115110A (en) | 2018-06-05 |
| CN108115110B CN108115110B (en) | 2020-03-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941505A (en) * | 2018-09-11 | 2018-12-07 | 贵州大学 | A kind of antiwear hardware dies |
| CN110877975A (en) * | 2018-09-05 | 2020-03-13 | 中国建材检验认证集团股份有限公司 | Prestressed ceramic and preparation method thereof |
| WO2022152264A1 (en) * | 2021-01-18 | 2022-07-21 | 安徽工业大学 | Nicrbsi-zrb2 metal ceramic powder for high temperature protection, composite coating and preparation method therefor |
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| JPH07180024A (en) * | 1993-12-24 | 1995-07-18 | Kobe Steel Ltd | Metal mold or metal mold material |
| JP2008188609A (en) * | 2007-02-02 | 2008-08-21 | Daido Steel Co Ltd | Die-casting die and surface treatment method therefor |
| CN102601340A (en) * | 2012-04-24 | 2012-07-25 | 江苏泽金激光科技有限公司 | Aluminum alloy die-casting mold and preparation process for forming protective coating on surface of inner cavity of aluminum alloy die-casting mold |
| CN102618870A (en) * | 2012-04-24 | 2012-08-01 | 江苏泽金激光科技有限公司 | Wear-resistant and abrasion-resistant mould and preparation process for forming protective coating on working surface of mould substrate |
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07180024A (en) * | 1993-12-24 | 1995-07-18 | Kobe Steel Ltd | Metal mold or metal mold material |
| JP2008188609A (en) * | 2007-02-02 | 2008-08-21 | Daido Steel Co Ltd | Die-casting die and surface treatment method therefor |
| CN102601340A (en) * | 2012-04-24 | 2012-07-25 | 江苏泽金激光科技有限公司 | Aluminum alloy die-casting mold and preparation process for forming protective coating on surface of inner cavity of aluminum alloy die-casting mold |
| CN102618870A (en) * | 2012-04-24 | 2012-08-01 | 江苏泽金激光科技有限公司 | Wear-resistant and abrasion-resistant mould and preparation process for forming protective coating on working surface of mould substrate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877975A (en) * | 2018-09-05 | 2020-03-13 | 中国建材检验认证集团股份有限公司 | Prestressed ceramic and preparation method thereof |
| CN110877975B (en) * | 2018-09-05 | 2021-09-24 | 中国建材检验认证集团股份有限公司 | Prestressed ceramic and preparation method thereof |
| CN108941505A (en) * | 2018-09-11 | 2018-12-07 | 贵州大学 | A kind of antiwear hardware dies |
| WO2022152264A1 (en) * | 2021-01-18 | 2022-07-21 | 安徽工业大学 | Nicrbsi-zrb2 metal ceramic powder for high temperature protection, composite coating and preparation method therefor |
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