CN103350490B - A kind of PVD composite ceramic coating screw and manufacture method - Google Patents
A kind of PVD composite ceramic coating screw and manufacture method Download PDFInfo
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- CN103350490B CN103350490B CN201310255912.9A CN201310255912A CN103350490B CN 103350490 B CN103350490 B CN 103350490B CN 201310255912 A CN201310255912 A CN 201310255912A CN 103350490 B CN103350490 B CN 103350490B
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- screw rod
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- screw
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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 kind of PVD composite ceramic coating screw, it includes the screw rod matrix of chrome-moly steel material, the top layer of screw rod matrix is provided with the nitriding layer that thickness is greater than 0.2 millimeter, the outer surface of nitriding layer has been cascading transition zone and wearing layer from the inside to the outside, transition zone is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer is the composite ceramic coat that the chromium nitride of 5-7 micron thickness and carbonitride are formed.Composite ceramic coat is as the outermost layer structure of screw rod, and it can improve wearability and the corrosion resistance of screw rod entirety effectively, and then extends the service life of screw rod further and improve the operating efficiency of screw rod.The invention also discloses a kind of manufacture method of PVD composite ceramic coating screw, its processing step comprises screw rod matrix Nitrizing Treatment, deposition transition zone and deposition wearing layer, has that wearability is good, the reliable and advantage of long service life of Stability Analysis of Structures by the screw rod prepared by above-mentioned manufacture method.
Description
Technical field
The present invention relates to plastic molding equipment technical field, particularly relate 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 has coordinated plasthetics processing and forming by injection machine with corresponding injection mold, extrusion molding has coordinated plasthetics extrusion molding to process by extrusion shaping machine with corresponding extrusion molding mould, and plastics sucking moulding has coordinated plasthetics processing and forming by Packing Machine with corresponding plastics suction mould.
For injection machine, extrusion shaping machine and Packing Machine, screw rod and machine barrel have been the core components of 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 the plasticizing of material, the quality of plasthetics and shaping efficiency impact, 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; But the screw rod of chromium plating structure exists flaky phenomenon, the crome metal peeled off is easy to scratch machine barrel, and in addition, crome metal exists severe toxicity and easily causes environmental pollution.
Summary of the invention
The object of the invention is to provide a kind of PVD composite ceramic coating screw for the deficiencies in the prior art, 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 the manufacture method providing a kind of PVD composite ceramic coating screw, the manufacture method of this PVD composite ceramic coating screw can manufacture that wearability is good and Stability Analysis of Structures 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 the nitriding layer that thickness is greater than 0.2 millimeter, the outer surface of nitriding layer has been cascading transition zone and wearing layer from the inside to the outside, transition zone is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer is the composite ceramic coat that the chromium nitride of 5-7 micron thickness and carbonitride are formed.
A manufacture method for 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 process under the ar gas environment of 400 DEG C, and ensures 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 in the outside deposition thickness of nitriding layer by physical vaporous deposition;
C, under the condition of temperature 400 DEG C, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat be made up of 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 the nitriding layer that thickness is greater than 0.2 millimeter, the outer surface of nitriding layer has been cascading transition zone and wearing layer from the inside to the outside, transition zone is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer is the composite ceramic coat that the chromium nitride of 5-7 micron thickness and carbonitride are formed.Composite ceramic coat is as the outermost layer structure of screw rod, and it can improve wearability and the corrosion resistance of screw rod entirety effectively, and then extends the service life of screw rod further and improve the operating efficiency of screw rod.So PVD composite ceramic coating screw of the present invention has that wearability is good, Stability Analysis of Structures is reliable and the advantage of 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 process under the ar gas environment of 400 DEG C, and ensures 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 in the outside deposition thickness of nitriding layer by physical vaporous deposition; C, under the condition of temperature 400 DEG C, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat be made up of chromium nitride and carbonitride by physical vaporous deposition in the outside deposition thickness of metallic chromium layer.Have that wearability is good by the screw rod prepared by above-mentioned manufacture method, the reliable and advantage of long service life of Stability Analysis of Structures.
Accompanying drawing explanation
Utilize accompanying drawing to be further detailed the present invention below, but the embodiment in accompanying drawing does not form any limitation of the invention.
Fig. 1 is structural representation of the present invention.
Include in FIG:
1---screw rod matrix 2---nitriding layer
3---transition zone 4---wearing layer.
Detailed description of the invention
Below in conjunction with concrete embodiment, the present invention will be described.
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 the nitriding layer 2 that thickness is greater than 0.2 millimeter, the outer surface of nitriding layer 2 has been cascading transition zone 3 and wearing layer 4 from the inside to the outside, transition zone 3 is the metallic chromium layer of 0.5-1 micron thickness, and wearing layer 4 is the composite ceramic coat that the chromium nitride of 5-7 micron thickness and carbonitride are formed.
By the transition zone 3 of depositing chromium metal as the articulamentum between nitriding layer 2 and wearing layer 4, this metallic chromium layer can ensure that composite ceramic coat that chromium nitride and carbonitride are formed stably can be attached to the surface of screw rod matrix 1; Need to explain further, the composite ceramic coat be made up of chromium nitride and carbonitride has the characteristic of high rigidity, high corrosion-resistant and low-friction coefficient, using the outermost layer structure of above-mentioned composite ceramic coat as screw rod, effectively can improve wearability and the corrosion resistance of screw rod entirety, and then extend the service life of screw rod further and improve the operating efficiency of screw rod.
Comprehensive above-mentioned situation is known, and PVD composite ceramic coating screw of the present invention has that wearability is good, Stability Analysis of Structures is reliable and the advantage of long service life.
A manufacture method for 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 process under the ar gas environment of 400 DEG C, and ensures 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 in the outside deposition thickness of nitriding layer 2 by physical vaporous deposition;
C, under the condition of temperature 400 DEG C, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat be made up of chromium nitride and carbonitride by physical vaporous deposition in the outside deposition thickness of metallic chromium layer.
Need to explain further, carrying out in the process of Nitrizing Treatment by glow discharge nitriding mode to screw rod matrix 1, Glow Discharge Cleaning is carried out in screw rod matrix 1 one aspect, carries out nitriding processing on the other hand.
Have that wearability is good according to the PVD composite ceramic coating screw prepared by above-mentioned manufacture method, the reliable and advantage of long service life of Stability Analysis of Structures.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (2)
1. a PVD composite ceramic coating screw, it is characterized in that: the screw rod matrix (1) including chrome-moly steel material, the top layer of screw rod matrix (1) is provided with the nitriding layer (2) that thickness is greater than 0.2 millimeter, the outer surface of nitriding layer (2) has been cascading transition zone (3) and wearing layer (4) from the inside to the outside, the metallic chromium layer that transition zone (3) is 0.5-1 micron thickness, the chromium nitride that wearing layer (4) is 5-7 micron thickness and the composite ceramic coat that carbonitride is formed.
2. a manufacture method for 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 process under the ar gas environment of 400 DEG C, and ensures 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 in the outside deposition thickness of nitriding layer (2) by physical vaporous deposition;
C, under the condition of temperature 400 DEG C, air pressure 0.2Pa, bias voltage-50V, be 5-7 micron and the composite ceramic coat be made up of 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 |
|---|---|---|---|
| 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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| 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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| CN103350490A CN103350490A (en) | 2013-10-16 |
| CN103350490B true CN103350490B (en) | 2015-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800009362A1 (en) * | 2018-10-11 | 2020-04-11 | Gimac Di Maccagnan Giorgio | Screw for extruder and extruder device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107043994B (en) * | 2017-03-24 | 2021-01-15 | 纳狮新材料有限公司 | Composite coating needle selector and preparation method thereof |
| 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 |
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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 |
| 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 |
| CN102717498A (en) * | 2012-07-03 | 2012-10-10 | 苏州柏德纳科技有限公司 | Screw |
| 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
- 2013-06-26 CN CN201310255912.9A patent/CN103350490B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT201800009362A1 (en) * | 2018-10-11 | 2020-04-11 | Gimac Di Maccagnan Giorgio | Screw for extruder and extruder device |
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| CN103350490A (en) | 2013-10-16 |
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