CN107587115A - A kind of plastic bottle cap die of diamond-like composite coating on surface - Google Patents
A kind of plastic bottle cap die of diamond-like composite coating on surface Download PDFInfo
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- CN107587115A CN107587115A CN201710828118.7A CN201710828118A CN107587115A CN 107587115 A CN107587115 A CN 107587115A CN 201710828118 A CN201710828118 A CN 201710828118A CN 107587115 A CN107587115 A CN 107587115A
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Abstract
The present invention relates to metal die field of surface treatment, specifically a kind of diamond-like composite coating plastic bottle cap die, described composite coating is double-decker, Ti, Cr or CrN are used as transition zone, DLC is face coat, and the preparation method of composite coating includes the processing of die surface, the preparation of transition zone, the preparation of diamond-like coating.Advanced PVD diamond-like coatings technology is applied to ultrahigh speed bottle cap mold surface by the present invention, and to improve wear-resisting, the non-stick nature energy of die surface, this method depositing temperature is low, and the metallographic structure on die matrix is without influence.Composite coating has that coefficient of friction is small, thermal conductivity is good, anti-adhesion, the advantages that wear-resistant, hardness is high, anticorrosive, pollution-free, the advantages of having taken into account graphite and diamond, there is preferable effect applied to the modern designs of plastics.Coating mold has the advantages of hardness is high, coefficient of friction is small, and compared with uncoated mould, service life increases substantially.
Description
Technical field
The present invention relates to metal die field of surface treatment, is a kind of diamond-like composite coating on surface specifically
Plastic bottle cap die.
Background technology
The condition of mold work is very harsh, for example ultrahigh speed, high stress, high attachment etc. can all cause die surface
Premature harm.So advanced, pollution-free, zero-emission the sufacing of application and development is that enterprise faces urgent need to solve the problem.Mesh
The mold materials of preceding manufacture bottle cap are mainly beryllium copper and super corrosion resistant powder steel M390.Because the quantity demand of bottle cap is big, institute
So that there is very high requirement to the life and reliability of bottle cap mold.Current bottle cap mold is primarily present problems with：(1) mould
Have life-span deficiency, serious wear；(2) heavy metal element of mold body can pollute bottle cap, and then beverage in pollution bottle；(3) mould
Has the thermal conductivity on surface as abrasion can reduce；(4) bottle cap mold surface has very strong compatibility with plastics, influences demoulding effect
Fruit, cause percent defective height.General bottle cap plastics have very strong adhesiveness in plastifying state to mould, are pulled out in punch-pin from bottle cap
If adhesion is too strong when going out, demoulding efficiency is gently then influenceed, serious can also pull bottle cap, form waste product.
Physical vapour deposition (PVD) (Physical Vapor Deposition, abbreviation PVD), it is in Gao Zhen using physical method
Under empty condition, mould or tool surfaces deposition it is one layer ultra-thin, high it is hard, receive micron film, significantly improve the resistance to of die surface
Mill property, non-stick nature, corrosion resistance.The technology can deposit the film type of heterogeneity as needed, arbitrarily control film
The composition of coating.Simultaneously because the film coating prepared is very fine and close, skin-friction coefficient is also extremely low, can completely cut off mould completely
Pollution of the middle heavy metal to bottle cap simultaneously prevents adhesion of the plastics to mould.If the performance of mould improves, can further reduce
Bottle cap molding cycle, be thinned bottle cap thickness, save after all the energy, protect environment, improve foodsafety and
Reduce carbon emission.
The content of the invention
The main object of the present invention is to provide a kind of current bottle cap mold of solution life-span deficiency, pollution bottle in use
The technical scheme of lid, poor thermal conductivity and demoulding difficulty, received by preparing Ti/DLC, Cr/DLC, CrN/DLC on bottle cap mold surface
Micron laminated coating, the corrosion resistance, wearability and Adhesion Resistance of mould are improved, improves the mold use life-span, reduce mould gold
The pollution of category.
A kind of the first aspect of the present invention, there is provided the preparation of plastic bottle cap die surface DLC (DLC) composite coating
Method, described composite coating are double-decker, and using Ti, Cr or CrN, DLC is face coat, described for transition zone
The preparation method of composite coating comprise the following steps：
A, die surface is handled：First die matrix is placed in absolute alcohol and manually cleaned, surface is removed and is difficult to move
The bur removed, then acetone ultrasonic wave cleaning is carried out to die matrix surface, further remove the greasy dirt and impurity on surface, cleaning
Time is 30min, to be cleaned to finish, and is taken out after drying；
B, prepared by transition zone：By the die matrix clamping after drying and it is sent into cathodic arc deposition equipment, furnace chamber is taken out
For vacuum to 0.006mbar, matrix is heated to 200 DEG C；
A. beryllium copper is matrix material, and when preparing Ti transition zones, Ar throughputs are 180~200sccm, and Ti targets are powered, electricity
It is 400~450V to flow for 100~120A, substrate bias, and sedimentation time is 20~30min；
B. corrosion resisting steel is matrix material, and when preparing Cr transition zones, Ar throughputs are 200~220sccm, and Cr targets lead to
Electricity, electric current are 120~140A, and substrate bias is 400~430V, and sedimentation time is 25~35min；
C. corrosion resisting steel is matrix material, and when preparing CrN transition zones, Ar throughputs are 200~220sccm, N2Gas stream
Measure as 150~180sccm, Cr targets are powered, and electric current is 130~150A, and substrate bias is 200~240V, sedimentation time 15
~20min；
C, prepared by diamond-like surface coating：After transition zone preparation terminates, gas valve is closed, target stops being powered,
Substrate bias is 650~750V, while C is passed through into furnace chamber2H2, C2H2Flow gradient rise with the increase of sedimentation time, the
One stage C2H2Flow is 40~60sccm, and sedimentation time is 5~10min, second stage C2H2Flow is 80~100sccm, is sunk
The product time is 15~20min, phase III C2H2Flow is 120~140sccm, and sedimentation time is 50~55min.
Preferably, high-purity rectangle Ti (purity 99.99%) is installed in described step B cathodic arc deposition equipment
Target and rectangle Cr (purity 99.99%) target.
Preferably, after the completion of in described step C prepared by diamond-like surface coating, treat that substrate temperature is cooled to 80 DEG C and gone out
Stove.
Preferably, first stage C in described step C2H2Flow is 50sccm, sedimentation time 8min, second stage
C2H2Flow is 90sccm, sedimentation time 18min, phase III C2H2Flow is 130sccm, sedimentation time 55min.
Preferably, the thickness of described Ti, Cr or CrN transition zone is 0.5~0.8 μm, and the thickness of diamond-like coating is
1.5~2 μm, the hardness of described composite coating is HV3000~3300.
The second aspect of the present invention, there is provided a kind of plastic bottle cap die diamond-like composite coating on surface, described plastics
Bottle cap mold diamond-like composite coating on surface is prepared using any of the above-described preparation method.
The third aspect of the present invention, there is provided a kind of plastic bottle cap die of diamond-like composite coating on surface, described modeling
Expect bottle cap mold surface covering composite coating, described composite coating is double-decker, uses Ti, Cr or CrN as transition zone, class
Diamond is face coat, and described composite coating is prepared using any of the above-described preparation method.
Beneficial effects of the present invention are as follows：
1st, advanced PVD diamond-like coatings technology is applied to ultrahigh speed bottle cap mold surface by the present invention, to improve mould
Have wear-resisting, the non-stick nature energy on surface.Diamond-like coating is using ionization level is high, depositing temperature is low, diffractive good negative electrode electricity
Arc technology is deposited.Coating is sandwich construction, and matrix material is different, and coating structure is also just different.Beryllium copper is the bottle cap of matrix
Mould, using Ti as transition zone, outer layer is diamond-like coating.Corrosion resisting steel be matrix bottle cap mold, using Cr or CrN as
Transition zone, outer layer deposition of diamond coatings.Ti, Cr, CrN can realize the smoothed of matrix and diamond-like coating physical property
Cross, reduce the stress of coat inside, improve the toughness and the adhesion of coating and matrix of coating；
2nd, the preparation of coated plastic bottle cap mold of the present invention mainly includes the processing of die surface, the preparation of transition zone, class
The preparation of diamond coatings, method depositing temperature of the invention is low, and the metallographic structure on die matrix is without influence.Transition zone is not only
It can alleviate between coating and matrix because of the unmatched contradiction of physical property, be well bonded coating tool, can also carry
The toughness and wearability (showing as hardness) of high surface DLC coatings.Compared with single DLC coatings, the painting of the inventive method preparation
Layer it is more excellent, have the advantages that thermal conductivity it is good, anticorrosive, anti-adhere to, it is wear-resisting undermine it is pollution-free；
3rd, DLC coatings have that coefficient of friction is small, and thermal conductivity is good, anti-adhesion, wear-resistant, hardness is high, anticorrosive, pollution-free etc.
Advantage, the advantages of having taken into account graphite and diamond, there is preferable effect applied to the modern designs of plastics.Coating mold have hardness it is high,
The advantages of coefficient of friction is small, compared with uncoated mould, service life increases substantially.
Brief description of the drawings
Fig. 1 is mold facecoat section structure diagram.
Fig. 2 is the microhardness of three kinds of different coatings.
Fig. 3 is the friction coefficient curve of DLC coatings
Fig. 4 is bond strength grade reference chart.
Fig. 5 is Cr/DLC coating edge vickers indentations.
Fig. 6 is CrN/DLC coating edge vickers indentations.
Fig. 7 is DLC coating edge vickers indentations.
Embodiment
Embodiment provided by the invention is elaborated with reference to embodiment and accompanying drawing.
Embodiment 1
Coating material：Ti/DLC, Cr/DLC or CrN/DLC
Coated substrate：Beryllium copper or corrosion-resisting steel
(1) die surface is handled.First die matrix is placed in absolute alcohol and manually cleaned, surface is removed and is difficult to move
The bur removed.Acetone ultrasonic wave cleaning is carried out to die matrix surface again, further removes greasy dirt and the impurity cleaning on surface
Time is 30min.It is to be cleaned to finish, taken out after drying.
(2) prepared by transition zone.Die matrix clamping after drying and feeding are provided with high-purity rectangle Ti (99.99%)
In the cathodic arc deposition equipment of target and rectangle Cr (99.99%) target, furnace chamber is evacuated to 0.006mbar, matrix adds
Heat is to 200 DEG C.
When beryllium copper is matrix material, when preparing Ti transition zones, Ar throughputs are 200sccm, and Ti target currents are 120A, base
Body-bias is 450V, sedimentation time 25min.
When corrosion resisting steel is matrix material, prepares Cr transition zones, Ar throughputs are 220sccm, and Cr target currents are
140A, substrate bias 430V, sedimentation time 35min.
When corrosion resisting steel is matrix, prepares CrN transition zones, Ar throughputs are 220sccm, N2Gas flow is
180sccm, Cr target current are 150A, substrate bias 240V, sedimentation time 20min.
(3) prepared by diamond-like coating.After transition zone preparation terminates, gas valve is closed, target stops being powered, matrix
Bias as 750V, while C is passed through into furnace chamber2H2, first stage C2H2Flow is 50sccm, sedimentation time 8min, second-order
Section C2H2Flow is 90sccm, sedimentation time 18min, phase III C2H2Flow is 130sccm, sedimentation time 55min.
Treat that substrate temperature is cooled to 80 DEG C and come out of the stove.
Embodiment 2
Coating layer thickness, section structure such as Fig. 1 institutes of coating are measured using SEM (200FEG Quanta)
Show, transition zone Ti, Cr, CrN thickness are respectively 0.65 μm, 0.78,0.71 μm, and the thickness of diamond-like coating is 1.65 μm.
Embodiment 3
Using MTS companies of U.S. Nano Indenter XP nano-hardness testers, diamond penetrator measures the micro- hard of coating
Degree.
Experiment parameter：CSM methods, thermal drift rate 0.05nm/s, compression distance 200nm.
The microhardnesses of three kinds of coatings is as shown in Fig. 2 noticeably greater than matrix hardness.
Embodiment 4
Using the frictional behaviour of friction wear testing machine measurement coating.
Experiment condition：Reciprocating friction, friction pair Si3N4Ceramic Balls, application load are 5N, and friction linear velocity is 0.3m/s.
Friction curve is as shown in figure 3, the substantially less than coefficient of friction of metal surface.Beallon：0.15~0.21, corrosion resistant
Lose steel：0.3~0.4.
Embodiment 5
Quantitative measurment coating and basal body binding force.
Experimental facilities：Rockwell apparatus (HRS-150), high resolution microscope (GSX-500).
Experiment condition：Diamond penetrator, apply load：150kgf, protect the lotus time：10s.
The bond strength grade of coating and matrix is gradually reduced with reference to figure 4, HF1~HF6 anchoring strength of coating.Coating is wear-resisting
Shown in the vickers indentation of steel such as Fig. 5 (Cr/DLC), Fig. 6 (CrN/DLC), Fig. 7 (DLC), the knot of Cr, CrN transition layer structure coating
It is significantly better than individual layer DLC coatings with joint efforts.
The preferred embodiment to the invention is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make a variety of equivalent on the premise of without prejudice to the invention spirit
Modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (7)
- A kind of 1. preparation method of plastic bottle cap die diamond-like composite coating on surface, it is characterised in that described compound painting Layer is double-decker, and using Ti, Cr or CrN, DLC is face coat for transition zone, the preparation side of described composite coating Method comprises the following steps：A, die surface is handled：First die matrix is placed in absolute alcohol and manually cleaned, then die matrix surface is entered Row acetone ultrasonic wave cleans, and scavenging period 30min is to be cleaned to finish, and is taken out after drying；B, prepared by transition zone：By the die matrix clamping after drying and it is sent into cathodic arc deposition equipment, furnace chamber is vacuumized To 0.006mbar, matrix is heated to 200 DEG C；A. beryllium copper is matrix material, and when preparing Ti transition zones, Ar throughputs are 180~200sccm, and Ti targets are powered, and electric current is 100~120A, substrate bias are 400~450V, and sedimentation time is 20~30min；B. corrosion resisting steel is matrix material, and when preparing Cr transition zones, Ar throughputs are 200~220sccm, and Cr targets are powered, electricity It is 400~430V to flow for 120~140A, substrate bias, and sedimentation time is 25~35min；C. corrosion resisting steel is matrix material, when preparing CrN transition zones, N2Gas flow is 150~180sccm, and Cr targets are powered, Electric current is 130~150A, and substrate bias is 200~240V, and sedimentation time is 15~20min；C, prepared by diamond-like surface coating：After transition zone preparation terminates, gas valve is closed, target stops being powered, matrix Bias as 650~750V, while C is passed through into furnace chamber2H2, C2H2Flow gradient rise with the increase of sedimentation time, the first rank Section C2H2Flow is 40~60sccm, and sedimentation time is 5~10min, second stage C2H2Flow is 80~100sccm, during deposition Between be 15~20min, phase III C2H2Flow is 120~140sccm, and sedimentation time is 50~55min.
- 2. the preparation method of plastic bottle cap die diamond-like composite coating on surface according to claim 1, its feature exist In being provided with the rectangle Ti targets of purity 99.99% and the square of purity 99.99% in described step B cathodic arc deposition equipment Shape Cr targets.
- 3. the preparation method of plastic bottle cap die diamond-like composite coating on surface according to claim 1, its feature exist In, in described step C diamond-like surface coating prepare after the completion of, treat that substrate temperature is cooled to 80 DEG C and come out of the stove.
- 4. the preparation method of plastic bottle cap die diamond-like composite coating on surface according to claim 1, its feature exist In first stage C in described step C2H2Flow is 50sccm, sedimentation time 8min, second stage C2H2Flow is 90sccm, sedimentation time 18min, phase III C2H2Flow is 130sccm, sedimentation time 55min.
- 5. the preparation method of plastic bottle cap die diamond-like composite coating on surface according to claim 1, its feature exist In the thickness of described Ti, Cr or CrN transition zone is 0.5~0.8 μm, and the thickness of diamond-like coating is 1.5~2 μm, described The hardness of composite coating be HV3000~3300.
- A kind of 6. plastic bottle cap die diamond-like composite coating on surface, it is characterised in that described plastic bottle cap die surface Diamond-like composite coating is prepared using any described preparation method of Claims 1 to 5.
- A kind of 7. plastic bottle cap die of diamond-like composite coating on surface, it is characterised in that described plastic bottle cap die table Face covers composite coating, and described composite coating is double-decker, and using Ti, Cr or CrN, DLC is surface for transition zone Coating, described composite coating are prepared using any described preparation method of Claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016108510162 | 2016-09-26 | ||
| CN201610851016 | 2016-09-26 |
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| CN201710828118.7A Pending CN107587115A (en) | 2016-09-26 | 2017-09-14 | A kind of plastic bottle cap die of diamond-like composite coating on surface |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702442A (en) * | 2019-03-11 | 2019-05-03 | 精利模塑科技（无锡）有限公司 | A kind of production method of precision rapid shaping auto electronics mold |
| WO2020155732A1 (en) * | 2019-01-29 | 2020-08-06 | 苏州涂冠镀膜科技有限公司 | Non-stick hard coating for injection mold and preparation method thereof |
| CN111775381A (en) * | 2019-04-04 | 2020-10-16 | 苏州卡利肯新光讯科技有限公司 | Processing technology of mold for car lamp reflector |
| CN114000147A (en) * | 2021-11-03 | 2022-02-01 | 江苏徐工工程机械研究院有限公司 | Wear-resistant rubber material and preparation method thereof |
| CN114447658A (en) * | 2021-12-16 | 2022-05-06 | 常州翊迈新材料科技有限公司 | Conductive wear-resistant coating and power connector with same |
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| CN101113516A (en) * | 2007-08-31 | 2008-01-30 | 武汉大学 | Method for preparing nano composite diamond coating |
| CN102534614A (en) * | 2011-12-30 | 2012-07-04 | 星弧涂层科技(苏州工业园区)有限公司 | Coating method for DLC (diamond-like carbon) coating on spinning reed and equipment |
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2017
- 2017-09-14 CN CN201710828118.7A patent/CN107587115A/en active Pending
Patent Citations (2)
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| CN101113516A (en) * | 2007-08-31 | 2008-01-30 | 武汉大学 | Method for preparing nano composite diamond coating |
| CN102534614A (en) * | 2011-12-30 | 2012-07-04 | 星弧涂层科技(苏州工业园区)有限公司 | Coating method for DLC (diamond-like carbon) coating on spinning reed and equipment |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020155732A1 (en) * | 2019-01-29 | 2020-08-06 | 苏州涂冠镀膜科技有限公司 | Non-stick hard coating for injection mold and preparation method thereof |
| CN109702442A (en) * | 2019-03-11 | 2019-05-03 | 精利模塑科技（无锡）有限公司 | A kind of production method of precision rapid shaping auto electronics mold |
| CN111775381A (en) * | 2019-04-04 | 2020-10-16 | 苏州卡利肯新光讯科技有限公司 | Processing technology of mold for car lamp reflector |
| CN114000147A (en) * | 2021-11-03 | 2022-02-01 | 江苏徐工工程机械研究院有限公司 | Wear-resistant rubber material and preparation method thereof |
| CN114000147B (en) * | 2021-11-03 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Wear-resistant rubber material and preparation method thereof |
| CN114447658A (en) * | 2021-12-16 | 2022-05-06 | 常州翊迈新材料科技有限公司 | Conductive wear-resistant coating and power connector with same |
| CN114447658B (en) * | 2021-12-16 | 2023-12-29 | 常州翊迈新材料科技有限公司 | Conductive wear-resistant coating and power connector with same |
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