CN108796501A - A kind of screw rod protective layer preparation method and the screw rod with protective layer - Google Patents
A kind of screw rod protective layer preparation method and the screw rod with protective layer Download PDFInfo
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- CN108796501A CN108796501A CN201810602173.9A CN201810602173A CN108796501A CN 108796501 A CN108796501 A CN 108796501A CN 201810602173 A CN201810602173 A CN 201810602173A CN 108796501 A CN108796501 A CN 108796501A
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- China
- Prior art keywords
- screw rod
- protective layer
- initial
- hardness
- initial screw
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Classifications
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/60—Screws
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The embodiment of the invention discloses a kind of screw rod protective layer preparation method and with the screw rod of protective layer, this method includes：Initial screw rod is heat-treated；When hardness reaches the first setting hardness after the initial screw rod heat treatment, a laminated layer gold is sprayed to the outer surface of the initial screw rod；Overall vacuum nitrogen treatment is carried out to the initial screw rod, until the hardness of the outer surface setting position of the initial screw rod reaches the second setting hardness；Vacuum PVD coatings are carried out to the initial screw rod so that the outer surface of the initial screw rod plates one layer of high hardness spray coating, forms protective layer.Using the embodiment of the present invention, a screw in injection molding machine with wear resistant corrosion resistant protective layer can be made into.Technical solution provided in an embodiment of the present invention, compared with the existing technology, production needs can be met by not depending on import goods and materials, and it is easy to maintain, if for a long time using wearing, it may be repaired processing, reach production needs again, substantially reduces the use cost of production unit.
Description
Technical field
The present embodiments relate to machine components processing technique field more particularly to a kind of screw rod protective layer preparation method and
Screw rod with protective layer.
Background technology
Screw rod is the important component of injection molding machine, its effect is to be conveyed, be compacted, melted, stir and pressed to plastics.
All these is all rotating to complete in barrel by screw rod.When screw rod rotates, plastics are for machine tube inner wall, screw rod
It is rubbed between screw rod bottom diameter 10, screw rod outer surface 20,30 pressure surface of spiral shell rib (as shown in Figure 1) and plastics and plastics can all generate
Scrape along mutually moves, and screw rotation time is long, may result in one of screw rod itself abrasion, and it is not smooth to finally result in production,
Product is not up to standard, and user needs replacing new screw rod.
Currently, China still can not also be really achieved the characteristic of imported material in screw rod raw material this part, it is directed to
Some wear that more severe (for example nylon adds glass fibre or mine fiber, powder metallurgy injection molding and ceramics is added to be molded into
Type etc.) or highly corrosive Halogen raw material (highly corrosives such as PA4T, PA9T, PA10T, PA6T raw material), state
Interior material can not be competent at this operating mode always.In face of the block of external high end materials, how domestic existing raw material are being combined
On the basis of enable that the screw rod of production is competent at high abrasion, high corrosion this operating mode is that current numerous enterprises or manufacturer are urgently to be resolved hurrily
Problem.
Invention content
The technical problem to be solved in the present invention is, in view of the deficiencies of the prior art, provides a kind of screw rod protective layer preparation
Method and screw rod with protective layer, to realize that the screw rod manufactured by domestic current material can be competent at high abrasion, high corrosion
Operating mode.
To achieve the above object, the present invention provides technical solution below：
In a first aspect, the embodiment of the present invention provides a kind of screw rod protective layer preparation method, including：
Initial screw rod is heat-treated；
When hardness reaches the first setting hardness after the initial screw rod heat treatment, the outer surface of the initial screw rod is sprayed
Apply a laminated layer gold；
Overall vacuum nitrogen treatment is carried out to the initial screw rod, until the outer surface setting position of the initial screw rod
Hardness reaches the second setting hardness；
Vacuum PVD coatings are carried out to the initial screw rod so that the outer surface of the initial screw rod plates a floor height hardness
Coating forms protective layer.
Further, in the preparation method, before described the step of being heat-treated to initial screw rod, further include：
Roughing is carried out to screw rod base material, and is polished it, initial screw rod is formed.
Further, in the preparation method, the outer surface to the initial screw rod sprays the step of a laminated gold
Including：
One layer of unilateral alloy-layer is sprayed to the outer surface of the initial screw rod；
The initial screw rod is ground so that the external surface shape of the initial screw rod is formed as setting shape.
Further, in the preparation method, the alloy-layer is the alloyed powder last layer containing tungsten carbide.
Further, in the preparation method, the thickness of the alloyed powder last layer is 1.5~2mm.
Further, in the preparation method, the second setting hardness is more than described first and sets hardness.
Further, in the preparation method, the high hardness spray coating is Danization Chrome coatings.
Further, in the preparation method, the thickness of the Danization Chrome coatings is 0.005~0.01mm.
Further, in the preparation method, the setting position is the initial screw rod outer surface 0.5~1mm depth
Position.
Second aspect, the embodiment of the present invention also provide a kind of screw rod with protective layer, including screw rod matrix, the screw rod
Adhere to matcoveredn on matrix, the protective layer is prepared according to any preparation method of first aspect.
Compared with prior art, beneficial effects of the present invention are：
Using the embodiment of the present invention, a screw in injection molding machine with wear resistant corrosion resistant protective layer can be made into.In preparation process
In, in conjunction with the demand of domestic existing material and production unit, pass through the improvement to screw rod outer surface processing technology so that production
Unit meets production needs in the case where not depending on import goods and materials, and easy to maintain, if for a long time using wearing, it can be with
Repair gene is carried out, reaches production needs again, substantially reduces the use cost of production unit.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram at the frayed position of screw rod in the prior art；
Fig. 2 is a kind of flow diagram for screw rod protective layer preparation method that the embodiment of the present invention one provides.
It illustrates：Screw rod screw rod bottom diameter 10, screw rod outer surface 20, spiral shell rib 30.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Referring to Fig. 1, the present embodiment one provides a kind of screw rod protective layer preparation method, including step：
S101, initial screw rod is heat-treated.
It should be noted that it is the hardness and use stabilization in order to ensure initial screw rod to carry out heat treatment to initial screw rod
Property, prevent screw rod from will not influence to produce because of temperature distortion in use.
Preferably, further include the preparation process of initial screw rod before S101, the specific steps are：
Roughing is carried out to screw rod base material, and is polished it, initial screw rod is formed.
S102, when hardness reaches the first setting hardness after the initial screw rod heat treatment, to the outer of the initial screw rod
One laminated layer gold of surface spraying.
Wherein, first hardness is set as HRC52~56.
Specifically, S102 further comprises：
(1) one layer of unilateral alloy-layer is sprayed to the outer surface of the initial screw rod；
(2) the initial screw rod is ground so that the external surface shape of the initial screw rod is formed as setting shape.
Wherein, the alloy-layer is the alloyed powder last layer containing tungsten carbide, and thickness is 1.5~2mm；The setting shape regards tool
Depending on the demand of body client.
S103, overall vacuum nitrogen treatment is carried out to the initial screw rod, until the outer surface of the initial screw rod is set
The hardness of position reaches the second setting hardness.
Wherein, the setting position is the position of the initial screw rod outer surface 0.5~1mm depth；Second setting
Hardness HRC68~70.When the hardness of the initial screw rod reaches HRC68~70, the compactness of alloy-layer can be improved, reduce one's share of expenses for a joint undertaking
Structure it is loose.
The second setting hardness is more than described first and sets hardness.
S104, vacuum PVD coatings are carried out to the initial screw rod so that the outer surface of the initial screw rod plates a floor height
Hardness coating forms protective layer.
Wherein, the high hardness spray coating is the Danization Chrome coatings of high compactness, and thickness is 0.005~0.01mm.The height
The contact for acting as isolation raw material and screw rod matrix of the Danization Chrome coatings of compactness, forms protective layer, keeps corrosion material right
Screw rod matrix causes to corrode.
A kind of screw rod protective layer preparation method provided in an embodiment of the present invention, can be made into one has wear resistant corrosion resistant protective layer
Screw in injection molding machine.In preparation process, in conjunction with the demand of domestic existing material and production unit, by screw rod outer surface
The improvement of processing technology so that production unit meets production needs in the case where not depending on import goods and materials, and easy to maintain, if
For a long time using wearing, may be repaired processing, reach produce needs again, substantially reduce the use of production unit at
This.
Embodiment two
The present embodiment two provides a kind of screw rod with protective layer, including screw rod matrix, adheres on the screw rod matrix
Matcoveredn, the protective layer are prepared according to the preparation method that embodiment one provides.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of screw rod protective layer preparation method, which is characterized in that including：
Initial screw rod is heat-treated；
When hardness reaches the first setting hardness after the initial screw rod heat treatment, one is sprayed to the outer surface of the initial screw rod
Laminated layer gold；
Overall vacuum nitrogen treatment is carried out to the initial screw rod, until the hardness of the outer surface setting position of the initial screw rod
Reach the second setting hardness；
Vacuum PVD coatings are carried out to the initial screw rod so that the outer surface of the initial screw rod plates one layer of high hardness spray coating,
Form protective layer.
2. screw rod protective layer preparation method according to claim 1, which is characterized in that carry out heat to initial screw rod described
Before the step of processing, further include：
Roughing is carried out to screw rod base material, and is polished it, initial screw rod is formed.
3. screw rod protective layer preparation method according to claim 1, which is characterized in that described to the outer of the initial screw rod
The step of one laminated gold of surface spraying includes：
One layer of unilateral alloy-layer is sprayed to the outer surface of the initial screw rod；
The initial screw rod is ground so that the external surface shape of the initial screw rod is formed as setting shape.
4. screw rod protective layer preparation method according to claim 3, which is characterized in that the alloy-layer is containing tungsten carbide
Alloyed powder last layer.
5. screw rod protective layer preparation method according to claim 4, which is characterized in that the thickness of the alloyed powder last layer is
1.5~2mm.
6. screw rod protective layer preparation method according to claim 1, which is characterized in that the second setting hardness is more than institute
State the first setting hardness.
7. screw rod protective layer preparation method according to claim 1, which is characterized in that the high hardness spray coating is Danization Chrome
Coating.
8. screw rod protective layer preparation method according to claim 7, which is characterized in that the thickness of the Danization Chrome coatings is
0.005~0.01mm.
9. screw rod protective layer preparation method according to claim 1, which is characterized in that the setting position is described initial
The position of screw rod outer surface 0.5~1mm depth.
10. a kind of screw rod with protective layer, including screw rod matrix, adhere to matcoveredn on the screw rod matrix, feature exists
In prepared by the protective layer preparation method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810602173.9A CN108796501A (en) | 2018-06-12 | 2018-06-12 | A kind of screw rod protective layer preparation method and the screw rod with protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810602173.9A CN108796501A (en) | 2018-06-12 | 2018-06-12 | A kind of screw rod protective layer preparation method and the screw rod with protective layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108796501A true CN108796501A (en) | 2018-11-13 |
Family
ID=64085411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810602173.9A Pending CN108796501A (en) | 2018-06-12 | 2018-06-12 | A kind of screw rod protective layer preparation method and the screw rod with protective layer |
Country Status (1)
| Country | Link |
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| CN (1) | CN108796501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941015A (en) * | 2020-08-24 | 2020-11-17 | 温州鹏升汽车部件有限公司 | Trimming-free production process for automobile hub bolt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534455A (en) * | 2011-12-28 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Composite gradient coating thermally sprayed on surface of screw rod of injecting and molding machine and a method for preparing same |
| CN103276350A (en) * | 2013-05-09 | 2013-09-04 | 佛山华研力合表面技术有限公司 | Surface thermal treatment method of screw |
| CN106735229A (en) * | 2017-01-06 | 2017-05-31 | 昆山中士设备工业有限公司 | A kind of screw rod 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 |
| CN108018551A (en) * | 2018-01-05 | 2018-05-11 | 纳狮新材料股份有限公司 | Screw rod with composite coating and preparation method thereof |
-
2018
- 2018-06-12 CN CN201810602173.9A patent/CN108796501A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534455A (en) * | 2011-12-28 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Composite gradient coating thermally sprayed on surface of screw rod of injecting and molding machine and a method for preparing same |
| CN103276350A (en) * | 2013-05-09 | 2013-09-04 | 佛山华研力合表面技术有限公司 | Surface thermal treatment method of screw |
| CN106735229A (en) * | 2017-01-06 | 2017-05-31 | 昆山中士设备工业有限公司 | A kind of screw rod 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 |
| CN108018551A (en) * | 2018-01-05 | 2018-05-11 | 纳狮新材料股份有限公司 | Screw rod with composite coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941015A (en) * | 2020-08-24 | 2020-11-17 | 温州鹏升汽车部件有限公司 | Trimming-free production process for automobile hub bolt |
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Application publication date: 20181113 |
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