1.5. Automobile химикалии, oils and greasings
Recently in sale the set химикалиев, oils and the greasings applied during performance of procedures of routine maintenance and car repairs arrives. The wide spectrum of products of the chemical and oil-extracting industry — from cleaning structures and solvents, to oils, greasings and aerosols for protection of rubber and plastic components of the car here enters.
The cleaner for carburettors and air заслонок represents strong solvent of pitches, a deposit and coal adjournment. The most part of cleaners for carburettors leave after itself greasing film of dry type which does not harden and not засмаливается eventually. In a kind of formation of such film the given cleaners are not recommended to be used for washing of electric components.
The cleaner for brake systems is applied to removal of traces of greasing and a brake liquid from surfaces of components of brake system where absolute cleanliness is a paramount condition of efficiency of functioning. The cleaner does not leave any traces and in many cases eliminates the squeal of brake mechanisms caused by pollution of their components.
The cleaner for electric components promotes elimination окисных films, traces of corrosion and a deposit from contact surfaces without infringement электропроводности. Also it can be used for cleaning of spark plugs, jets of the carburettor, regulators of pressure and other knots where full clearing of oil and fat is desirable.
Влагопоглотители serve for removal of water and a moisture from surfaces of such electric components as the generator, a pressure regulator, the assembly block of safety locks, electric sockets, etc. Vlagopoglotiteli usually do not spend an electric current, chemically are not aggressive and неогнеопасны.
Обезжириватели represent super-strong solvents and serve for removal of traces of greasing from external surfaces of the engine and chassis components. Are issued in the form of aerosols or are put by a brush or a brush and, depending on type, are washed off either water, or solvent.
Hermetic RTV is most widely applied прокладочным hermetic. It is made on the basis of silicon, stiffens on air, provides hermetic sealing and good adhesion, is waterproof, fills defects of interfaced surfaces, remains elastic, it is not compressed and does not sit down, it acts rather easily in film and applied in addition practically to all linings on knots where temperatures do not exceed average values.
Anaerobnyj hermetic unlike hermetic RTV can be applied not only in addition to linings, but also to formation of those. Remains elastic, it is steady against influence of solvents and well fills roughnesses of interfaced surfaces. The basic difference from hermetic RTV consists in hardening conditions. If hermetic RTV starts to stiffen at contact to air анаэробный hermetic, on the contrary, rises only in absence of such contact. The last means that hermetic hardening occurs only after assemblage of components and their dense pressing to each other.
Hermetic for pipes and carving connections is applied to consolidation choke connections of hydraulic, pneumatic and vacuum lines. It is usually made on the basis of teflon компаунда and it is delivered in the form of the aerosols put like a paint of liquids, or in the form of a tape (ФУМ).
Antitaking компаунд serves for the prevention «прикипания», corrosion, jamming and cold welding of fixture. High-temperature antitaking hermetics usually are made on a basis медьсодержащих or graphite greasings and used in fixture of system of release and a final collector.
Анаэробные taking компаунды serve for prevention spontaneous отдавания fixture under the influence of vibrations and stiffen only after installation in absence of contact to air. Taking компаунды average capacity are applied to fixing of small fixture (nuts, bolts, screws), a subject regular отдаванию further. High-power компаунды are usually used for blocking of large fixture, necessity in отдавании which arises extremely seldom.
Additives to oil serve for updating of chemical properties of oil without change of its viscosity for the purpose of decrease in an internal friction in the engine. It is necessary to notice that the majority of the firms-manufacturers which are letting out engine oils, warn against use of any additives to them.
Additives to fuel carry out at once some functions, depending on the chemical compound. Usually contain the solvents promoting a conclusion of slags and removal of a deposit from internal surfaces of the carburettor, components of system of injection of fuel and an inlet path. Besides, application of such additives promotes removal of the coal adjournment formed on walls of chambers of combustion. The structure of some additives includes the substances serving for greasing of components of the top part of a head of cylinders (клапанного the mechanism, piston rings), others promote removal of a condensate from walls of a fuel tank.
The brake liquid represents specially developed structure, capable to resist to influence of heats and the pressure arising in a hydraulic path of brake system. It is not necessary to suppose contact of a brake liquid to the painted surfaces of the car and open sites of a body. Hold a brake liquid in tightly closed container in order to avoid hit in it of a moisture (a liquid very much гигроскопична) and a dirt.
Glue for fastening of sealing strips кузовных apertures as it is clear from its name, serves for fastening of sealing strips of apertures of doors, windows and covers of luggage spaces. It can be applied to fixing of elements of internal furnish.
The anticorrosive covering for the car bottom represents гудронообразный the structure prepared on an oil basis and serves for protection of metal surfaces against influence of aggressive factors of environment. Besides, carries out function of sound insulation of salon.
Воски and polyroles are applied to protection of a paint and varnish covering against environment influences. Use of various type восков and polyroles can demand various type of a paint. The structure of some polyroles includes the abrasive or chemical additives serving for removal of an external layer of oxides (tarnishing) from painted surfaces of old cars. Recently in the market polyroles not containing wax which structure includes set of chemical additives, such as polymers or substances on a silicon basis are widely presented any. Such polyroles usually are put and keep longer usual (wax) is easier.