CN201325158Y - Screw bolt with hard coating - Google Patents
Screw bolt with hard coating Download PDFInfo
- Publication number
- CN201325158Y CN201325158Y CNU2008201709250U CN200820170925U CN201325158Y CN 201325158 Y CN201325158 Y CN 201325158Y CN U2008201709250 U CNU2008201709250 U CN U2008201709250U CN 200820170925 U CN200820170925 U CN 200820170925U CN 201325158 Y CN201325158 Y CN 201325158Y
- Authority
- CN
- China
- Prior art keywords
- screw bolt
- coating
- layer
- nitrizing
- metallic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 32
- 239000011248 coating agent Substances 0.000 title claims abstract description 22
- 150000004767 nitrides Chemical class 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000005121 nitriding Methods 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims 1
- 238000005240 physical vapour deposition Methods 0.000 abstract description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005524 ceramic coating Methods 0.000 abstract description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 3
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 235000012721 chromium Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
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- Physical Vapour Deposition (AREA)
Abstract
The utility model provides a screw bolt with hard coating, which comprises a screw bolt basic body [1], wherein a nitrizing layer [2] is arranged on the surface of the basic body, a hard coating is arranged on the external of the nitrizing layer, the hard coating is metallic nitrizing layer [3] which is coated through the PVD (physical vapor deposition) technique, and the thickness of the metallic nitrizing layer is 2-7 mu m. The screw bolt with hard coating provided by the utility model is the metallic nitrizing layer which is coated on the basic body of the screw bolt through the PVD technique, compared with the prior art, the screw bolt has the advantages that firstly, the PVD technique is adopted, the coating and the basic body are combined through metallurgy, the screw bolt has good adhesive force, which can not generate the peeling phenomenon like electrodeposited chromium, and prevents generating scuffing accidents in charging baskets, secondly, metallic nitride is used as a ceramic coating, the rigidity of the ceramic coating is higher than that of a single metallic coating, and the screw bolt has better wear-resisting property.
Description
Technical field
The utility model relates to a kind of screw rod that hard coat is arranged, belong to the plastics machinery technical field.
Background technology
Screw rod and machine barrel are two most crucial parts in the plastics machinery, the work in combination quality of these two parts, and plasticizing, Products Quality and production efficiency to material all have material impact.For improve screw rod hardness, people have proposed the screw-rod structure of coating hard metal on screw rod matrix, wherein mainly are electrodeposited chromiums.Though the electrodeposited chromium screw rod has anti-wear performance preferably, its coating is thicker, generally at 30～50 μ m because the metal of institute's coating all wants expensive in the screw rod matrix metal, thus the mistake thick coating hard coat arranged just wasted too much precious metal.
Summary of the invention
At above-mentioned defective, the utility model is exactly the screw rod that hard coat is arranged that will provide a kind of coating thin.
The screw rod that hard coat is arranged that the utility model provides, the screw rod matrix is arranged, and matrix surface has nitriding layer, and nitriding layer has hard coat outward, described hard coat is the metal nitride layer that applies with PVD (physical vapour deposition (PVD)) technology, this metal nitride coatings thickness 2～7 μ m.
Said metal nitride coatings is CrN coating or TiN coating or ZrN coating or AlTiN coating, preferred 3～5 μ m of thickness.
The screw rod that hard coat is arranged that the utility model provides, it is the metal nitride layer that on the screw rod matrix of handling through nitriding, applies with PVD technology, compared with prior art, the utlity model has following advantage: the one, owing to adopt PVD technology, coating and matrix are metallurgical binding, have good adhesive force, can not produce peeling phenomenon sometimes, in barrel, produce the scuffing incident as electrodeposited chromium; The 2nd, metal nitride is as ceramic coating, and its hardness is higher than single metal coating, and the better wear resistance energy is arranged.
Description of drawings
Fig. 1 is the profile of the utility model one embodiment, among the figure: 1-screw rod matrix, 2-nitriding layer, 3-metal nitride coatings.
The specific embodiment
Below in conjunction with specific embodiment the technical solution of the utility model is described further:
Embodiment 1: under ar gas environment, the screw rod of handling through nitriding is carried out glow discharge clean, deposit 4 μ m CrN coatings with electric arc-intermediate frequency magnetic control PVD technology in screw surface subsequently.
Embodiment 2: under ar gas environment, the screw rod of handling through nitriding is carried out glow discharge clean, deposit 3 μ m TiN coatings with electric arc-intermediate frequency magnetic control PVD technology in screw surface subsequently.
Embodiment 3: under ar gas environment, the screw rod of handling through nitriding is carried out glow discharge clean, deposit 2 μ m ZrN coatings with electric arc-intermediate frequency magnetic control PVD technology in screw surface subsequently.
Embodiment 4: under ar gas environment, the screw rod of handling through nitriding is carried out glow discharge clean, deposit 7 μ m AlTiN coatings with electric arc-intermediate frequency magnetic control PVD technology in screw surface subsequently.
Claims (3)
1, a kind of screw rod that hard coat is arranged has the screw rod matrix, and matrix surface has nitriding layer, and nitriding layer has hard coat outward, it is characterized in that described hard coat is the metal nitride layer that applies with physical gas-phase deposition, this metal nitride coatings thickness 2～7 μ m.
2, the screw rod that hard coat is arranged as claimed in claim 1 is characterized in that said metal nitride coatings is CrN coating or TiN coating or ZrN coating or AlTiN coating.
3, the screw rod that hard coat is arranged as claimed in claim 1 or 2 is characterized in that said metal nitride coatings thickness is 3～5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201709250U CN201325158Y (en) | 2008-12-23 | 2008-12-23 | Screw bolt with hard coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201709250U CN201325158Y (en) | 2008-12-23 | 2008-12-23 | Screw bolt with hard coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201325158Y true CN201325158Y (en) | 2009-10-14 |
Family
ID=41177136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201709250U Expired - Fee Related CN201325158Y (en) | 2008-12-23 | 2008-12-23 | Screw bolt with hard coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201325158Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012013058A1 (en) * | 2010-07-26 | 2012-02-02 | Zhang Peng | Remelting type thread element for parallel dual-screw extruder and manufacturing method thereof |
| CN103103524A (en) * | 2011-11-11 | 2013-05-15 | 超晶科技有限公司 | Novel surface treatment process for screw for injection molding machine |
| CN103350490A (en) * | 2013-06-26 | 2013-10-16 | 东莞泰星五金制品厂有限公司 | PVD (physical vapour deposition) composite ceramic coating screw and manufacturing 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 |
| CN109093976A (en) * | 2018-08-02 | 2018-12-28 | 北京工商大学 | A kind of double screw extruder can the wear-resisting kneading block of convenient changing screw rod |
| CN110055490A (en) * | 2019-05-05 | 2019-07-26 | 兰州理工大学温州泵阀工程研究院 | A kind of compounding method on austenitic stainless steel surface layer |
-
2008
- 2008-12-23 CN CNU2008201709250U patent/CN201325158Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012013058A1 (en) * | 2010-07-26 | 2012-02-02 | Zhang Peng | Remelting type thread element for parallel dual-screw extruder and manufacturing method thereof |
| CN103103524A (en) * | 2011-11-11 | 2013-05-15 | 超晶科技有限公司 | Novel surface treatment process for screw for injection molding machine |
| CN103350490A (en) * | 2013-06-26 | 2013-10-16 | 东莞泰星五金制品厂有限公司 | PVD (physical vapour deposition) composite ceramic coating screw and manufacturing method thereof |
| CN103350490B (en) * | 2013-06-26 | 2015-10-28 | 东莞泰星五金制品厂有限公司 | A kind of PVD composite ceramic coating screw and manufacture method |
| 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 |
| CN109093976A (en) * | 2018-08-02 | 2018-12-28 | 北京工商大学 | A kind of double screw extruder can the wear-resisting kneading block of convenient changing screw rod |
| CN110055490A (en) * | 2019-05-05 | 2019-07-26 | 兰州理工大学温州泵阀工程研究院 | A kind of compounding method on austenitic stainless steel surface layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |