FR2554527A1 - Fixing device such as screw, bolt and nut - Google Patents
Fixing device such as screw, bolt and nut Download PDFInfo
- Publication number
- FR2554527A1 FR2554527A1 FR8317662A FR8317662A FR2554527A1 FR 2554527 A1 FR2554527 A1 FR 2554527A1 FR 8317662 A FR8317662 A FR 8317662A FR 8317662 A FR8317662 A FR 8317662A FR 2554527 A1 FR2554527 A1 FR 2554527A1
- Authority
- FR
- France
- Prior art keywords
- screw
- bolt
- nut
- fixing device
- treatment
- 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.)
- Pending
Links
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004952 Polyamide Substances 0.000 claims abstract description 4
- 229920002647 polyamide Polymers 0.000 claims abstract description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- DQIPXGFHRRCVHY-UHFFFAOYSA-N chromium zinc Chemical compound [Cr].[Zn] DQIPXGFHRRCVHY-UHFFFAOYSA-N 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 238000005553 drilling Methods 0.000 description 7
- 238000010079 rubber tapping Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000004959 Rilsan Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
Description
"Dispositif de fixation tel que vis, boulon et écrou". "Fixing device such as screw, bolt and nut".
L'invention concerne un dispositif de fixation tel que vis, boulon et écrou. The invention relates to a fixing device such as screw, bolt and nut.
Ces dispositifs de fixation doivent présenter une très bonne solidité mécanique et, en outre, être protégés efficacement contre la corrosion. On connaît ainsi divers types de vis auto-perceuses et auto-taraudeuses qui sont réalisées de manière qu'au moins la pointe présente une grande solidité lui permettant de réaliser un auto-perçage dans de l'acier, de manière que le corps de la vis puisse effectuer un auto-taraudage, l'ensemble de la vis, et notamment la tête, étant en outre réalisé de manière à résister efficacement à la corrosion. Cependant, ces vis connues sont d'un prix de revient élevé. These fixing devices must have very good mechanical strength and, in addition, be effectively protected against corrosion. There are thus known various types of self-drilling and self-tapping screws which are produced so that at least the point has a great solidity allowing it to perform a self-drilling in steel, so that the body of the screw can perform self-tapping, the entire screw, and in particular the head, being further produced so as to effectively resist corrosion. However, these known screws are of a high cost price.
Il est ainsi connu de réaliser de telles vis à l'aide d'un acier inoxydable au nickel chrome, la pointe de la vis recevant une lame résistante, revêtue de zinc par exemple, et destinée particulièrement à permettre l'auto-perçage. Ces vis sont non seulement coûteuses mais, en outre, elles ne sont pas intégralement inoxydables. It is thus known to produce such screws using a nickel chromium stainless steel, the tip of the screw receiving a resistant blade, coated with zinc for example, and intended in particular to allow self-drilling. These screws are not only expensive but, moreover, they are not entirely stainless.
On connait également des vis réalisées en acier ordinaire mais dont la surface de la tête reçoit une feuille en acier inoxydable La protection de telles vis est cependant imparfaite. Screws made of ordinary steel are also known, but the head surface of which receives a sheet of stainless steel. The protection of such screws is however imperfect.
Suivant une réalisation plus complexe, il a également été prévu de réaliser des vis avec un embout en métal auto-perceur, un corps en un métal pouvant effectuer l'auto-taraudage et une tête rapportée en matière plastique. According to a more complex embodiment, provision has also been made to produce screws with a self-piercing metal tip, a metal body capable of performing self-tapping and an attached plastic head.
Cette réalisation est cependant extrêmement coûteuse et la protection de la pointe et du corpus contre la corrosion n'est pas exempte de critique.This realization is however extremely expensive and the protection of the point and the corpus against corrosion is not without criticism.
La présente invention a notamment pour but de remédier à ces inconvénients et concerne à cet effet un dispositif de fixation tel que vis, boulon et écrou, carac térisé en ce qu'il est réalisé en acier inoxydable martensitique selon la norme AFNOR Z 12 C 13 et reçoit, sur toute la surface, un traitement à l'aide d'un composant à base de zinc et de chrome, au moins la partie de serrage du dispo sitif,.à savoir la tête de la vis ou du boulon ou l'écrou, subissant ensuite un traitement à l'aide d'un polyamide après avoir été revêtu d'un primaire d'accrochage. The present invention aims in particular to remedy these drawbacks and for this purpose relates to a fixing device such as screw, bolt and nut, charac terized in that it is made of martensitic stainless steel according to AFNOR Z 12 C 13 standard and receives, over the entire surface, a treatment using a component based on zinc and chromium, at least the clamping part of the device, namely the head of the screw or bolt or the nut, then undergoing treatment with a polyamide after having been coated with a bonding primer.
Suivant une autre caractéristique de l'invention, le traitement à base de zinc et de-chrome est réalisé en couches multiples. According to another characteristic of the invention, the treatment based on zinc and chromium is carried out in multiple layers.
La présente invention a pour but la réalisation d'un dispositif de fixation tel qu'une vis, un boulon ou un écrou, qui présente une résistance mécanique importante et une excellente protection contre la corrosion, afin de permettre notamment la fabrication de vis autoperceuses- et auto-taraudeuses, d'un prix de revient faible, comparé au coût de fabrication d'une vis similaire en acier inoxydable 18/10. The object of the present invention is to produce a fixing device such as a screw, a bolt or a nut, which has high mechanical strength and excellent corrosion protection, in order to allow in particular the manufacture of self-drilling screws. and self-tapping, low cost, compared to the cost of manufacturing a similar screw in 18/10 stainless steel.
Suivant l'invention, il ést ainsi prévu de réaliser ce dispositif de fixation et, notamment cette vis, en acier inoxydable martensitique selon la norme AFNOR
Z 12 C 13 (qui correspond à la norme AISI 410), ce dispositif de fixation recevant ensuite une première-protection spécifique en couches multiples à base de zinc et de chrome (dacrométisation) jusqu'à obtention de résultats en tenue en atmosphère corrosive.According to the invention, it is thus planned to produce this fixing device and, in particular this screw, in martensitic stainless steel according to the AFNOR standard.
Z 12 C 13 (which corresponds to the AISI 410 standard), this fixing device then receiving a specific first protection in multiple layers based on zinc and chromium (dacrometization) until results are obtained in behavior in corrosive atmosphere.
Cette combinaison de l'acier inoxydable martensitique et de ce traitement en couches multiples permet d'obtenir une liaison intime du revêtement protecteur sur l'acier inoxydable martensitique notamment en raison du fait que l'acier inoxydable martensitique
Z 12 C 13 est un acier au chrome, tandis que l'opération de dépit ultérieur consiste à réaliser, en couches multiples, un laminage à l'aide d'un composant à base de zinc et de chrome notamment, le chrome mis en oeuvre au cours de ce dépôt assurant la liaison intime nécessaire avec l'acier inoxydable martensitique également à base de chrome.This combination of martensitic stainless steel and this treatment in multiple layers makes it possible to obtain an intimate bond of the protective coating on martensitic stainless steel in particular because of the fact that martensitic stainless steel
Z 12 C 13 is a chromium steel, while the subsequent spite operation consists in carrying out, in multiple layers, rolling using a component based on zinc and chromium in particular, the chromium used during this deposition ensuring the necessary intimate connection with martensitic stainless steel also based on chromium.
Les vis auto-perceuses et auto-taraudeuses sont notamment destinées à la fixation de toitures et de bardages et elles sont, de ce fait, soumises à la corrosion. Self-drilling and self-tapping screws are especially intended for fixing roofs and cladding and are therefore subject to corrosion.
Dans le cas de vis, cela concerne notamment la tête de serrage qui, d'une part, est soumise directement aux intempéries et, d'autre part, peut être détériorée en surface lorsqu'on lui applique, à l'aide d'une clé, la force nécessaire au serrage de la vis.In the case of screws, this concerns in particular the clamping head which, on the one hand, is subjected directly to the weather and, on the other hand, can be deteriorated on the surface when it is applied, using a wrench, the force required to tighten the screw.
Afin d'assurer une protection efficace de cette vis contre la corrosion, il est alors prévu de lui faire subir un traitement à l'aide d'un polyamide ou RILSAN (marque déposée),ce traitement étant effectué après avoir revêtu la vis d'un primaire d'accrochage. In order to ensure effective protection of this screw against corrosion, it is then planned to subject it to a treatment using a polyamide or RILSAN (registered trademark), this treatment being carried out after coating the screw. a bonding primer.
Si cela est jugé suffisant, ce traitement pourra ne concerner que la tête de la vis-ou du boulon et, dans le cas d'un écrou, elle concernera sa face externe. If this is deemed sufficient, this treatment may only concern the head of the screw or bolt and, in the case of a nut, it will concern its external face.
Le dispositif de fixation ainsi obtenu présente des caractéristiques mécaniques telles qu'il permet, par exemple, la réalisation de vis auto-perceuses et auto-taraudeuses protégées efficacement contre la corrosion, cette protection contre la corrosion étant comparable à celle obtenue par une vis réalisée en acier austénitique, une vis en acier austénitique ne présentant pas cependant des caractéristiques mécaniques suffisantes qui permettraient la réalisation de vis auto-perceuses du fait que cet acier inoxydable austénitique ne peut pas subir un traitement de cémentation à chaud. The fixing device thus obtained has mechanical characteristics such that it allows, for example, the production of self-drilling and self-tapping screws effectively protected against corrosion, this protection against corrosion being comparable to that obtained by a screw made in austenitic steel, an austenitic steel screw does not however have sufficient mechanical characteristics which would allow the production of self-drilling screws because this austenitic stainless steel cannot be subjected to hot cementation treatment.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8317662A FR2554527A1 (en) | 1983-11-07 | 1983-11-07 | Fixing device such as screw, bolt and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8317662A FR2554527A1 (en) | 1983-11-07 | 1983-11-07 | Fixing device such as screw, bolt and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2554527A1 true FR2554527A1 (en) | 1985-05-10 |
Family
ID=9293846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8317662A Pending FR2554527A1 (en) | 1983-11-07 | 1983-11-07 | Fixing device such as screw, bolt and nut |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2554527A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1319801A2 (en) * | 2001-12-15 | 2003-06-18 | WIRTGEN GmbH | System for exchanging pick holders having tension screws |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7620433U1 (en) * | 1976-06-28 | 1976-11-18 | Schraubenfabrik Mayweg Kg, 5990 Altena | Corrosion-protected screw |
| FR2310491A1 (en) * | 1975-05-08 | 1976-12-03 | Textron Inc | COMPOSITE FIXING BODY |
| US4074011A (en) * | 1974-04-25 | 1978-02-14 | Nippon Steel Corporation | Topcoated phosphated bolts, nuts and washers |
| US4114505A (en) * | 1977-01-31 | 1978-09-19 | Loeser William J | Coatings and methods of application |
-
1983
- 1983-11-07 FR FR8317662A patent/FR2554527A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4074011A (en) * | 1974-04-25 | 1978-02-14 | Nippon Steel Corporation | Topcoated phosphated bolts, nuts and washers |
| FR2310491A1 (en) * | 1975-05-08 | 1976-12-03 | Textron Inc | COMPOSITE FIXING BODY |
| DE7620433U1 (en) * | 1976-06-28 | 1976-11-18 | Schraubenfabrik Mayweg Kg, 5990 Altena | Corrosion-protected screw |
| US4114505A (en) * | 1977-01-31 | 1978-09-19 | Loeser William J | Coatings and methods of application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1319801A2 (en) * | 2001-12-15 | 2003-06-18 | WIRTGEN GmbH | System for exchanging pick holders having tension screws |
| EP1319801A3 (en) * | 2001-12-15 | 2003-08-20 | WIRTGEN GmbH | System for exchanging pick holders having tension screws |
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