CN103350490A - PVD (physical vapour deposition) composite ceramic coating screw and manufacturing method thereof - Google Patents
PVD (physical vapour deposition) composite ceramic coating screw and manufacturing method thereof Download PDFInfo
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- CN103350490A CN103350490A CN2013102559129A CN201310255912A CN103350490A CN 103350490 A CN103350490 A CN 103350490A CN 2013102559129 A CN2013102559129 A CN 2013102559129A CN 201310255912 A CN201310255912 A CN 201310255912A CN 103350490 A CN103350490 A CN 103350490A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Physical Vapour Deposition (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a PVD (physical vapour deposition) composite ceramic coating screw. The PVD composite ceramic coating screw comprises a screw basal body made from chrome-molybdenum alloy steel, wherein a nitriding layer with the thickness more than 0.2mm is arranged on the surface layer of the screw basal body, a transition layer and a wear-resistant layer are sequentially laminated and arranged on the outer surface of the nitriding layer from inside to outside, the transition layer is a metal chromium layer with the thickness of 0.5-1 Mu m, and the wear-resistant layer is a composite ceramic coating which has the thickness of 5-7 Mum and is composed of chrome nitride and carbon nitride; and the composite ceramic coating is taken as the outermost structure of the screw, the integral wear resistance and corrosion resistance of the screw can be effectively improved, and further service life of the screw is prolonged and working efficiency of the screw is improved. The invention also discloses a manufacturing method of the PVD composite ceramic coating screw. The manufacturing method of the PVD composite ceramic coating screw comprises the following processing steps of: nitriding the screw basal body, depositing the transition layer and depositing the wear-resistant layer; and the prepared screw by adopting the manufacturing method has the advantages of high wear resistance, stable and reliable structure and long service life.
Description
Technical field
The present invention relates to the plastic molding equipment technical field, relate in particular to a kind of PVD composite ceramic coating screw and manufacture method.
Background technology
Existing plasthetics generally adopts following three kinds of molding modes to process i.e. injection mo(u)lding, extrusion molding and plastics sucking moulding; Wherein, injection mo(u)lding cooperates with corresponding injection mold by injection machine finishes the plasthetics processing and forming, extrusion molding cooperates with corresponding extrusion molding mould by extrusion shaping machine finishes plasthetics extrusion molding processing, and plastics sucking moulding cooperates with corresponding plastics suction mould by Packing Machine finishes the plasthetics processing and forming.
For injection machine, extrusion shaping machine and Packing Machine, screw rod and machine barrel are the core components of finishing corresponding injection mo(u)lding, extrusion molding and plastics sucking moulding; Screw rod and machine barrel support the use, and the quality of screw rod is great for quality and the shaping efficiency impact of the plasticizing of material, plasthetics, and wherein, the quality of screw rod is mainly reflected in corrosion resistance, wearability and antisticking ability.
Prior art generally adopts the mode of electrodeposited chromium to improve the quality of screw rod; Yet there is flaky phenomenon in the screw rod of chromium plating structure, and the crome metal that peels off is easy to scratch machine barrel, and in addition, there is severe toxicity in crome metal and easily causes environmental pollution.
Summary of the invention
The object of the invention is to provides a kind of PVD composite ceramic coating screw for the deficiencies in the prior art, and this PVD composite ceramic coating screw has good wearability, the reliable and long service life of Stability Analysis of Structures.
Another object of the present invention is to provide a kind of manufacture method of PVD composite ceramic coating screw, the manufacture method of this PVD composite ceramic coating screw can make that the good and Stability Analysis of Structures of wearability is reliable, the screw rod of long service life.
For achieving the above object, the present invention is achieved through the following technical solutions.
A kind of PVD composite ceramic coating screw, include the screw rod matrix of chrome-moly steel material, the top layer of screw rod matrix is provided with thickness greater than 0.2 millimeter nitriding layer, the outer surface of nitriding layer be cascading from the inside to the outside transition zone and wearing layer, transition zone is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer is the chromium nitride of 5-7 micron thickness and the composite ceramic coat that carbonitride consists of.
A kind of manufacture method of PVD composite ceramic coating screw includes following processing step, is specially:
The screw rod matrix of a, chrome-moly steel material carries out glow discharge nitriding under 400 ℃ ar gas environment processes, and guarantees that nitrided case depth is greater than 0.2 millimeter;
B, under the air pressure conditions of 0.2Pa, be the metallic chromium layer of 0.5-1 micron by physical vaporous deposition in the outside deposition thickness of nitriding layer;
C, under the condition of 400 ℃ of temperature, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat that consisted of by chromium nitride and carbonitride by physical vaporous deposition in the outside deposition thickness of metallic chromium layer.
Beneficial effect of the present invention is: a kind of PVD composite ceramic coating screw of the present invention, it includes the screw rod matrix of chrome-moly steel material, the top layer of screw rod matrix is provided with thickness greater than 0.2 millimeter nitriding layer, the outer surface of nitriding layer be cascading from the inside to the outside transition zone and wearing layer, transition zone is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer is the chromium nitride of 5-7 micron thickness and the composite ceramic coat that carbonitride consists of.Composite ceramic coat is as the outermost layer structure of screw rod, and it can improve wearability and the corrosion resistance of screw rod integral body effectively, and then prolongs further the service life of screw rod and improve the operating efficiency of screw rod.So PVD composite ceramic coating screw of the present invention has advantages of that wearability is good, Stability Analysis of Structures reliable and long service life.
Another beneficial effect of the present invention is: the manufacture method of a kind of PVD composite ceramic coating screw of the present invention, it includes following processing step, be specially: the screw rod matrix of a, chrome-moly steel material carries out glow discharge nitriding under 400 ℃ ar gas environment processes, and guarantees that nitrided case depth is greater than 0.2 millimeter; B, under the air pressure conditions of 0.2Pa, be the metallic chromium layer of 0.5-1 micron by physical vaporous deposition in the outside deposition thickness of nitriding layer; C, under the condition of 400 ℃ of temperature, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat that consisted of by chromium nitride and carbonitride by physical vaporous deposition in the outside deposition thickness of metallic chromium layer.Have advantages of that by the prepared screw rod that forms of above-mentioned manufacture method wearability is good, Stability Analysis of Structures reliable and long service life.
Description of drawings
The below utilizes accompanying drawing to come the present invention is further detailed, but the embodiment in the accompanying drawing does not consist of any limitation of the invention.
Fig. 1 is structural representation of the present invention.
In Fig. 1, include:
1---screw rod matrix 2---nitriding layer
3---transition zone 4---wearing layer.
The specific embodiment
The present invention will be described below in conjunction with concrete embodiment.
As shown in Figure 1, a kind of PVD composite ceramic coating screw, include the screw rod matrix 1 of chrome-moly steel material, the top layer of screw rod matrix 1 is provided with thickness greater than 0.2 millimeter nitriding layer 2, the outer surface of nitriding layer 2 be cascading from the inside to the outside transition zone 3 and wearing layer 4, transition zone 3 is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer 4 is the chromium nitride of 5-7 micron thickness and the composite ceramic coat that carbonitride consists of.
The transition zone 3 that is formed by crome metal deposition is as the articulamentum between nitriding layer 2 and the wearing layer 4, and this metallic chromium layer can guarantee that composite ceramic coat that chromium nitride and carbonitride consist of can stably be attached to the surface of screw rod matrix 1; Need further to explain, the composite ceramic coat that is made of chromium nitride and carbonitride has the characteristic of high rigidity, high corrosion-resistant and low-friction coefficient, with the outermost layer structure of above-mentioned composite ceramic coat as screw rod, can effectively improve wearability and the corrosion resistance of screw rod integral body, and then prolong further the service life of screw rod and improve the operating efficiency of screw rod.
Comprehensive above-mentioned situation as can be known, PVD composite ceramic coating screw of the present invention has advantages of that wearability is good, Stability Analysis of Structures is reliable and long service life.
A kind of manufacture method of PVD composite ceramic coating screw includes following processing step, is specially:
The screw rod matrix 1 of a, chrome-moly steel material carries out glow discharge nitriding under 400 ℃ ar gas environment processes, and guarantees that nitriding layer 2 thickness are greater than 0.2 millimeter;
B, under the air pressure conditions of 0.2Pa, be the metallic chromium layer of 0.5-1 micron by physical vaporous deposition in the outside deposition thickness of nitriding layer 2;
C, under the condition of 400 ℃ of temperature, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat that consisted of by chromium nitride and carbonitride by physical vaporous deposition in the outside deposition thickness of metallic chromium layer.
Need further to explain, in the process of screw rod matrix 1 being carried out the nitriding processing by the glow discharge nitriding mode, screw rod matrix 1 carries out Glow Discharge Cleaning on the one hand, carries out on the other hand nitriding processing.
Have advantages of that according to the prepared PVD composite ceramic coating screw that forms of above-mentioned manufacture method wearability is good, Stability Analysis of Structures reliable and long service life.
Above content is preferred embodiment of the present invention only, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (2)
1. PVD composite ceramic coating screw, it is characterized in that: the screw rod matrix (1) that includes the chrome-moly steel material, the top layer of screw rod matrix (1) is provided with thickness greater than 0.2 millimeter nitriding layer (2), the outer surface of nitriding layer (2) be cascading from the inside to the outside transition zone (3) and wearing layer (4), transition zone (3) is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer (4) is the chromium nitride of 5-7 micron thickness and the composite ceramic coat that carbonitride consists of.
2. the manufacture method of a PVD composite ceramic coating screw is characterized in that, includes following processing step, is specially:
The screw rod matrix (1) of a, chrome-moly steel material carries out glow discharge nitriding under 400 ℃ ar gas environment processes, and guarantees that nitriding layer (2) thickness is greater than 0.2 millimeter;
B, under the air pressure conditions of 0.2Pa, be the metallic chromium layer of 0.5-1 micron by physical vaporous deposition in the outside deposition thickness of nitriding layer (2);
C, under the condition of 400 ℃ of temperature, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat that consisted of by chromium nitride and carbonitride by physical vaporous deposition in the outside deposition thickness of metallic chromium layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310255912.9A CN103350490B (en) | 2013-06-26 | 2013-06-26 | A kind of PVD composite ceramic coating screw and manufacture method |
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| CN201310255912.9A CN103350490B (en) | 2013-06-26 | 2013-06-26 | A kind of PVD composite ceramic coating screw and manufacture method |
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| CN103350490A true CN103350490A (en) | 2013-10-16 |
| CN103350490B CN103350490B (en) | 2015-10-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407146A (en) * | 2013-08-07 | 2013-11-27 | 安徽省新方尊铸造科技有限公司 | Method for prolonging service life of sleeve of screw |
| CN106894020A (en) * | 2017-03-24 | 2017-06-27 | 纳狮新材料股份有限公司 | Composite coating screw rod and preparation method thereof |
| CN107043994A (en) * | 2017-03-24 | 2017-08-15 | 纳狮新材料股份有限公司 | Composite coating slide cam selector and preparation method thereof |
| WO2020075037A1 (en) * | 2018-10-11 | 2020-04-16 | Gimac Di Maccagnan Giorgio | Screw for an extruder and extruding device |
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| CN101430004A (en) * | 2008-12-12 | 2009-05-13 | 武汉大学 | PVD chromium based ceramic composite coating piston ring and method for producing the same |
| CN201325158Y (en) * | 2008-12-23 | 2009-10-14 | 舟山市汉邦机械科技有限公司 | Screw bolt with hard coating |
| CN102343505A (en) * | 2011-08-10 | 2012-02-08 | 周建军 | Manufacturing method of bimetal screw rod |
| CN102717498A (en) * | 2012-07-03 | 2012-10-10 | 苏州柏德纳科技有限公司 | Screw |
| CN102717507A (en) * | 2012-06-21 | 2012-10-10 | 浙江华业塑料机械有限公司 | Metal cylinder and manufacturing method thereof |
| CN102773991A (en) * | 2012-06-21 | 2012-11-14 | 浙江华业塑料机械有限公司 | Metallic screw and manufacturing method for same |
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2013
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Patent Citations (6)
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| CN101430004A (en) * | 2008-12-12 | 2009-05-13 | 武汉大学 | PVD chromium based ceramic composite coating piston ring and method for producing the same |
| CN201325158Y (en) * | 2008-12-23 | 2009-10-14 | 舟山市汉邦机械科技有限公司 | Screw bolt with hard coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407146A (en) * | 2013-08-07 | 2013-11-27 | 安徽省新方尊铸造科技有限公司 | Method for prolonging service life of sleeve of screw |
| CN103407146B (en) * | 2013-08-07 | 2015-11-25 | 安徽省新方尊自动化科技有限公司 | A kind of method improving screw sleeve service life |
| CN106894020A (en) * | 2017-03-24 | 2017-06-27 | 纳狮新材料股份有限公司 | Composite coating screw rod and preparation method thereof |
| CN107043994A (en) * | 2017-03-24 | 2017-08-15 | 纳狮新材料股份有限公司 | Composite coating slide cam selector and preparation method thereof |
| WO2020075037A1 (en) * | 2018-10-11 | 2020-04-16 | Gimac Di Maccagnan Giorgio | Screw for an extruder and extruding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103350490B (en) | 2015-10-28 |
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