CH565334A5 - Shock absorbing coating - for springs of alkyl-silanol polycondensate has long life - Google Patents
Shock absorbing coating - for springs of alkyl-silanol polycondensate has long lifeInfo
- Publication number
- CH565334A5 CH565334A5 CH541472A CH541472A CH565334A5 CH 565334 A5 CH565334 A5 CH 565334A5 CH 541472 A CH541472 A CH 541472A CH 541472 A CH541472 A CH 541472A CH 565334 A5 CH565334 A5 CH 565334A5
- Authority
- CH
- Switzerland
- Prior art keywords
- coating
- springs
- wire springs
- polycondensate
- wire
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 title claims abstract description 29
- 230000035939 shock Effects 0.000 title claims description 11
- 230000001133 acceleration Effects 0.000 claims abstract description 13
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 13
- 238000005299 abrasion Methods 0.000 claims abstract description 3
- 239000006185 dispersion Substances 0.000 claims abstract description 3
- 239000002904 solvent Substances 0.000 claims abstract description 3
- 238000013016 damping Methods 0.000 claims description 6
- 239000000567 combustion gas Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 claims description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- 239000005062 Polybutadiene Substances 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 claims description 2
- 229920002681 hypalon Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- -1 polychlorobutadiene Polymers 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 2
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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
- F16F3/06—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs of which some are placed around others in such a way that they damp each other by mutual friction
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/024—Covers or coatings therefor
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The coating is applied to multi-wire springs from a dispersion of the alkylsilanol polycondensate elastomer in solvent. The springs are used as closure-springs for weapons which are subjected to sudden high accelerations. The coating withstands these over a long period without crumbling and is elastically deformable, abrasion, oil, and heat-resistant.
Description
Das Patent betrifft die Elastomer-Beschichtung von gewundenen Mehrdrahtfedern. Dabei erfolgt die Beschichtung am vorteilhaftesten in einem Zustand der Mehrdrahfedern, bei dem sich die Einzeldrähte infolge Aufbringens einer Kraft voneinander abheben, die entgegengesetzt zur Betriebskraft gerichtet ist.
Beschichtete Mehrdrahtfedern werden hauptsächlich als Maschinenwaffenfedern eingesetzt. Die Beschichtung soll die Lebensdauer von solchen hoch beschleunigten stossartig beanspruchten Mehrdrahtfedern dadurch verlängern, dass sie die Stosswellen, die die Feder mit grosser Beschleunigung durchlaufen, dämpft.
Als bisher günstigste Elastomerbeschichtung wurden Beschichtungen mit kautschukähnlichen Polyurethanen bekannt. Diese bekannten Beschichtungen haben jedoch den Nachteil, dass sie den Beanspruchungen, die bei sehr grosser Beschleunigung auftreten, nicht gewachsen sind und den verfolgten Zweck der Schwingungsdämpfung der Stosswellen von Mehrdrahtfedem nicht in erforderlichem Masse erreichen.
Theoretisch eigenen sich zur Beschichtung von Mehrdrahtfedern Elastomere, die elastisch verformbar, abriebfest, ölund wärmebeständig sind, einen möglichst kleinen Reibungskoeffizienten besitzen, grossen Beschleunigungen standhalten und ihre Eigenschaften während der Beanspruchung nicht verlieren oder ändern.
Der Erfindung liegt die Aufgabe zugrunde, ein Elastomer zu finden, das sich zur Beschichtung von Mehrdrahtfedern eignet, die nicht mit sinusähnlicher Zeitwegkurve, sondern mit hoher Beschleunigung beansprucht werden und dabei noch temperaturbeaufschlagt werden, das also der komplizierten Beanspruchung bei stossbeanspruchten, hoch beschleunigten Mehrdrahtfedern gerecht wird.
Zahlreiche Beschichtungsversuche mit Polybutadien, Butadienmischpolymerisaten wie Butadienstyrol-, Akrylnitril- oder Vinylpyridin-Polymerisaten, Polychlorbutadien, Polyisoprenen, Polyurethanen und chlorsulfoniertem Polyäthylen haben keine brauchbaren Ergebnisse gebracht, weil die Beschichtung weder den grossen Beschleunigungen, denen beschichtete Mehrdrahtfedern unterliegen, noch den dabei durch Reibungswärme oder Wärme der Pulververbrennungsgase auftretenden Temperaturen bei grosser mechanischer Beanspruchung standhalten.
Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass zur Beschichtung eine Polykondensat aus Alkylsilanolen, zweckmässig in Dispersion mit einem Lösungsmittel, verwandt wird.
Je nach Beanspruchung der beschichteten Mehrdrahtfedern kann die Beschichtung mit Polykondensat aus Alkylsilanolen durch 24-stündiges Tempern in ihren Eigenschaften noch geändert werden.
Die durch die Erfindung erzielten Vorteile bestehen darin, dass die Beschichtung den mechanischen Beanspruchungen der hoch beschleunigten Mehrdrahtfedern wesentlich besser standhält als alle übrigen bisher angewandten Beschichtungen, und dass sie trotz der auftretenden Reibungswärme, die durch die Federarbeit entsteht und trotz der bei hoch beschleunigten Waffenfedern auftretenden Temperaturbeaufschlagung durch die Pulververbrennungsgase ihre elastischen, dämpfenden Eigenschaften zwischen den einzelnen Drähten, aus denen die Mehrdrahtfeder zusammengesetzt ist, nicht verliert. Hierdurch bleibt auch nach längerer Beanspruchung der Dämpfungseffekt gegenüber den Stosswellen, die die Feder durchlaufen, erhalten, so dass erfindungsgemäss beschichtete Mehrdrahtfedern eine wesentlich längere Lebensdauer zeigen als Federn, die mit irgend einem anderen Elastomer beschichtet sind.
Eine weitere wesentliche Verbesserung durch die erfindungsgemässe Beschichtung mit Polykondensat aus Alkylsilanolen besteht darin, dass das Auftreten von Brüchen der Einzeldrähte von Mehrdrahtfedern, die bei den auftretenden sehr grossen Beschleunigungen sehr bruchempfindlich sind, wesentlich verzögert wird.
PATENTANSPRUCH
Verfahren zur Beschichtung von gewundenen Mehrdrahtfedern mit Elastomeren, dadurch gekennzeichnet, dass die Beschichtung mit Polykondensat aus Alkylsilanolen erfolgt.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
The patent concerns the elastomer coating of coiled multi-wire springs. In this case, the coating is most advantageously carried out in a state of the multi-wire springs in which the individual wires stand out from one another as a result of the application of a force which is directed opposite to the operating force.
Coated multi-wire springs are mainly used as machine gun springs. The purpose of the coating is to extend the service life of such highly accelerated, shock-loaded multi-wire springs by dampening the shock waves that the spring traverses with great acceleration.
Coatings with rubber-like polyurethanes have become known as the most favorable elastomer coatings to date. However, these known coatings have the disadvantage that they cannot cope with the stresses that occur with very high acceleration and do not achieve the intended purpose of vibration damping of the shock waves of multi-wire springs to the required extent.
Theoretically, elastomers are suitable for coating multi-wire springs that are elastically deformable, abrasion-resistant, oil and heat-resistant, have the lowest possible coefficient of friction, withstand high accelerations and do not lose or change their properties during stress.
The invention is based on the object of finding an elastomer that is suitable for coating multi-wire springs that are not stressed with a sine-like time path curve, but with high acceleration and are still exposed to temperature, i.e. that does justice to the complicated stresses encountered in shock-loaded, highly accelerated multi-wire springs becomes.
Numerous coating attempts with polybutadiene, butadiene copolymers such as butadiene styrene, acrylonitrile or vinylpyridine polymers, polychlorobutadiene, polyisoprenes, polyurethanes and chlorosulfonated polyethylene have not produced any useful results because the coating is neither subject to the large accelerations to which coated multi-wire springs nor the friction springs are subject Withstand the heat of the powder combustion gases occurring temperatures under high mechanical stress.
The object is achieved according to the invention in that a polycondensate of alkylsilanols, expediently in dispersion with a solvent, is used for the coating.
Depending on the stress on the coated multi-wire springs, the properties of the coating with polycondensate from alkylsilanols can be changed by tempering for 24 hours.
The advantages achieved by the invention are that the coating withstands the mechanical stresses of the highly accelerated multi-wire springs much better than all other coatings used up to now, and that it despite the frictional heat that arises from the spring work and despite that which occurs with highly accelerated weapon springs The application of temperature to the powder combustion gases does not lose their elastic, damping properties between the individual wires that make up the multi-wire spring. As a result, the damping effect against the shock waves passing through the spring is retained even after prolonged use, so that multi-wire springs coated according to the invention have a significantly longer service life than springs coated with any other elastomer.
Another essential improvement through the inventive coating with polycondensate of alkylsilanols is that the occurrence of breaks in the individual wires of multi-wire springs, which are very sensitive to breakage under the very high accelerations that occur, is substantially delayed.
PATENT CLAIM
Process for coating coiled multi-wire springs with elastomers, characterized in that the coating is carried out with polycondensate from alkylsilanols.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH541472A CH565334A5 (en) | 1972-04-12 | 1972-04-12 | Shock absorbing coating - for springs of alkyl-silanol polycondensate has long life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH541472A CH565334A5 (en) | 1972-04-12 | 1972-04-12 | Shock absorbing coating - for springs of alkyl-silanol polycondensate has long life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH565334A5 true CH565334A5 (en) | 1975-08-15 |
Family
ID=4293175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH541472A CH565334A5 (en) | 1972-04-12 | 1972-04-12 | Shock absorbing coating - for springs of alkyl-silanol polycondensate has long life |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH565334A5 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19746572A1 (en) * | 1997-10-22 | 1999-04-29 | Itt Mfg Enterprises Inc | Noise dampening arrangement for motor vehicle brakes |
-
1972
- 1972-04-12 CH CH541472A patent/CH565334A5/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19746572A1 (en) * | 1997-10-22 | 1999-04-29 | Itt Mfg Enterprises Inc | Noise dampening arrangement for motor vehicle brakes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |