{"id":3785,"date":"2022-12-21T06:00:31","date_gmt":"2022-12-21T12:00:31","guid":{"rendered":"https:\/\/www.bioblend.com\/?page_id=3785"},"modified":"2025-06-11T11:57:37","modified_gmt":"2025-06-11T16:57:37","slug":"when-to-use-hydraulic-fluid-additives","status":"publish","type":"page","link":"https:\/\/www.bioblend.com\/fr\/when-to-use-hydraulic-fluid-additives\/","title":{"rendered":"Quand utiliser des additifs pour fluides hydrauliques"},"content":{"rendered":"

\"When<\/p>\n

Le fluide dans un syst\u00e8me hydraulique est la principale consid\u00e9ration. Cependant, tous les types d'huile hydraulique ne fonctionnent pas dans toutes les machines. De plus, il n'est pas facile de localiser le fluide optimal pour un syst\u00e8me donn\u00e9.<\/p>\n

Fluide hydraulique<\/a> les additifs trouvent leur application la plus courante. L'huile de base peut \u00eatre modifi\u00e9e pour avoir les caract\u00e9ristiques souhait\u00e9es en ajoutant les additifs appropri\u00e9s. Les additifs d'huile peuvent augmenter les propri\u00e9t\u00e9s souhaitables, r\u00e9duire les propri\u00e9t\u00e9s ind\u00e9sirables ou m\u00eame en ajouter de nouvelles \u00e0 l'huile de base.<\/p>\n

Composants des fluides hydrauliques et leurs significations<\/strong><\/h2>\n

Les additifs sont utilis\u00e9s \u00e0 des concentrations allant de 1% \u00e0 35% pour obtenir les propri\u00e9t\u00e9s d'huile souhait\u00e9es. Si le syst\u00e8me est con\u00e7u avec la propri\u00e9t\u00e9 d'huile souhait\u00e9e, il peut utiliser des additifs ou des ensembles d'additifs, des m\u00e9langes d'additifs ou ajouter des ensembles.
\nParmi les nombreux avantages que les additifs peuvent apporter au fluide, citons l'\u00e9mulsification, l'augmentation de l'alcalinit\u00e9 de r\u00e9serve, la r\u00e9sistance accrue aux pressions extr\u00eames, l'activit\u00e9 des pesticides contre les micro-organismes, le pouvoir lubrifiant limite, l'anti-bu\u00e9e, la stabilit\u00e9 de la temp\u00e9rature, l'am\u00e9lioration de la filtration et la pr\u00e9vention de la rouille.<\/p>\n

Comprendre les additifs pour fluides hydrauliques<\/strong><\/h2>\n

Selon leur destination, les additifs pour huile hydraulique peuvent \u00eatre s\u00e9par\u00e9s en additifs tensioactifs et actifs. Les syst\u00e8mes d'additifs peuvent \u00e9galement \u00eatre utilis\u00e9s pour cat\u00e9goriser les huiles hydrauliques.<\/p>\n

1. Inhibiteurs d'usure<\/strong><\/h3>\n

Les fluides hydrauliques anti-usure \u00e0 base de zinc, \u00e9galement connus sous le nom de fluides hydrauliques ZDDP, sont le type de fluide hydraulique le plus largement utilis\u00e9.<\/p>\n

Les ZDDP sont couramment utilis\u00e9s dans les lubrifiants de carter, les lubrifiants de transmission et une grande vari\u00e9t\u00e9 de lubrifiants industriels car ce sont des agents anti-usure tr\u00e8s \u00e9conomiques.<\/p>\n

2. D\u00e9s\u00e9mulsifiants<\/strong><\/h3>\n

L'eau contenue dans le fluide hydraulique peut \u00eatre rapidement \u00e9vacu\u00e9e gr\u00e2ce \u00e0 des d\u00e9s\u00e9mulsifiants, qui aident \u00e0 s\u00e9parer les deux. Une strat\u00e9gie pour emp\u00eacher le mat\u00e9riel de rouiller et de se corroder et de r\u00e9duire les boues du syst\u00e8me consiste \u00e0 \u00e9liminer toute eau disponible du syst\u00e8me.<\/p>\n

Les d\u00e9s\u00e9mulsifiants jouent un r\u00f4le crucial dans le fluide, mais ils sont g\u00e9n\u00e9ralement pr\u00e9sents \u00e0 des niveaux de traitement insuffisants, souvent inf\u00e9rieurs \u00e0 100 mg\/kg. Les d\u00e9s\u00e9mulsifiants sont g\u00e9n\u00e9ralement des mini-formulations contenant plusieurs composants tels que des agents de traitement, des compte-gouttes et des clarificateurs.<\/p>\n

3. Antioxydants<\/strong><\/h3>\n

Des boues et des vernis peuvent \u00eatre produits lorsque l'oxyg\u00e8ne r\u00e9agit avec une huile de base et des composants additifs, produisant des esp\u00e8ces d'alcool, de peroxyde, d'ald\u00e9hyde, de c\u00e9tone et d'acide carboxylique. L'\u00e9l\u00e9vation de temp\u00e9rature acc\u00e9l\u00e8re ces r\u00e9actions.<\/p>\n

Les acides carboxyliques sont un produit de d\u00e9gradation oxydative qui peut favoriser la rouille ou acc\u00e9l\u00e9rer la corrosion des m\u00e9taux jaunes. Les effets nocifs de l'oxydation peuvent \u00eatre \u00e9vit\u00e9s ou att\u00e9nu\u00e9s \u00e0 l'aide de composants antioxydants.<\/p>\n

4. Substances qui emp\u00eachent le cuivre et les m\u00e9taux jaunes de s'oxyder et de rouiller<\/strong><\/h3>\n

De nombreuses formes de corrosion \u00e9lectrochimique et chimique peuvent affecter la m\u00e9tallurgie des syst\u00e8mes hydrauliques.<\/p>\n

Le mat\u00e9riel fabriqu\u00e9 \u00e0 partir d'alliages de cuivre peut \u00eatre prot\u00e9g\u00e9 de la corrosion avec une passivation au cuivre et au m\u00e9tal jaune, tandis que le mat\u00e9riel fabriqu\u00e9 \u00e0 partir de m\u00e9taux ferreux peut \u00eatre prot\u00e9g\u00e9 de la rouille avec des inhibiteurs de rouille. Les triazoles, une classe de produits chimiques contenant de l'azote, sont couramment utilis\u00e9s pour la passivation en raison de leur grande solubilit\u00e9 dans l'huile et d'autres lipides.<\/p>\n

5. Antimousses<\/strong><\/h3>\n

Trop de mousse ou des bulles d'air \u00e0 la surface du fluide peuvent causer des dommages par cavitation, une dur\u00e9e de vie du fluide plus courte en raison de l'oxydation, une mauvaise lubrification de l'\u00e9quipement, une compressibilit\u00e9 accrue du fluide, du bruit et un entra\u00eenement d'air.<\/p>\n

Les formulateurs utilisent des agents anti-mousse pour \u00e9viter ces probl\u00e8mes. Les antimousses d\u00e9stabilisent les interfaces air-fluide pour faire s'effondrer les bulles d'air.<\/p>","protected":false},"excerpt":{"rendered":"

The fluid in a hydraulic system is the primary consideration. However, not every type of hydraulic oil works in every machine. In addition, it is not easy to locate the optimal fluid for any given system. Hydraulic fluid additives find their most common application. The base oil can be modified to have the desired characteristics […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"class_list":["post-3785","page","type-page","status-publish","hentry"],"yoast_head":"\n5 Types of Hydraulic Fluid Additives + When to Use Them<\/title>\n<meta name=\"description\" content=\"Learn when to use hydraulic fluid additives to boost performance, reduce wear, and extend equipment life. 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