Copper grease toolstation

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functions, applications, overview of known materials

Copper lubricants are most in demand in automotive maintenance and construction, in metallurgical, petrochemical, foundry and other industries with severe equipment operating conditions.

The main functions of copper lubricants are:

• Simplifies the assembly of threaded connections (lubricants keep the tightening torque constant)
• Protection of metal parts from corrosion (lubricants are excellent at repelling water and “preserving” surfaces)
• Provides easy disassembly of joints (lubricants prevent them from seizing under high temperatures and pressures)
• Prevention of scuffing of moving parts
• Prevention of jamming of fasteners under high loads
• Improving the tightness of connections

Consider 5 of the most famous and sought after copper greases.

EFELE MP-413

EFELE MP-413

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best choice

Copper grease resistant to extreme high temperatures and loads. It contains a large amount of copper powder and an additional component - graphite, due to which it works more efficiently than others.

Due to the optimally balanced composition, EFELE MP-413 copper paste has improved lubricating, anti-wear and extreme pressure properties. It is distinguished by its heat resistance (up to +1100 °C), high bearing capacity, good adhesion and electrical conductivity.

EFELE MP-413 is used for processing threaded, splined and keyed connections. The application of copper paste helps to protect them from corrosion and fretting corrosion, seizing and cold welding. The use of the material ensures the constancy of the tightening torque, easy assembly and disassembly of units.

FELE MP-413 paste is packaged in jars, syringes with dispensers and aerosol cans. The latter are especially easy to use. The scope of their application is unlimited - from solving everyday problems and car maintenance to industrial service.

Excellent performance and relatively low cost push EFELE MP-413 copper grease to the first position in the rating.

Packings

• syringe dispenser 15 g, syringe set 10x15 g, aerosol can 210 ml, can 800 g, pail 5 kg

Liqui Moly Kupfer-Paste

Liqui Moly Kupfer-Paste

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Copper paste for heavy duty connections.

Designed to protect against corrosion, seizing and sticking of automotive parts operating at high temperatures and loads: spark plugs, exhaust system threaded connections, exhaust manifold studs, wheel bolts, rear brake pads, etc.

The application of Liqui Moly Kupfer-Paste to the listed elements facilitates their disassembly even after prolonged use.

The product is packaged in tubes of 100 ml. Having characteristics similar to EFELE MP-413, the paste from the German manufacturer costs almost twice as much.

Packs

• 100 ml tube

Molykote 1000

Molykote 1000

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Copper paste for bolted joints exposed to heat and corrosion.

Molykote 1000 paste has a very wide range of industrial applications: it is used for processing cylinder head screws, oil injection nozzles, metal working tools, separator pipelines, furnaces and kilns, chemical equipment components, etc.

The material does not contain lead and nickel, remains operational at low and high temperatures, withstands severe mechanical stress. The use of paste helps protect parts from corrosion, prevent their jerky movement, ensure a constant tightening torque and the possibility of easy dismantling.

Despite a wide range of applications and good performance, Molykote 1000 is only in the third position of the TOP, because it is inferior to EFELE MP-413 and Liqui Moly Kupfer-Paste in terms of heat resistance (the upper limit of operating temperatures of this paste is +650 ° C).

Packs

• 100 g tube, 1 kg can, 400 ml aerosol can

Wurth Cu 800

Wurth Cu 800

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Aerosol copper lubricant for automotive parts.

The material is designed to protect against corrosion, burning, freezing, seizing of metal parts of the car: hinges, bearings, sliding surfaces, brake pads, electrical contacts, bolted connections (threads of spark plugs, fasteners in exhaust gas systems, etc.).

The grease is resistant to washing off with water, non-concentrated solutions of acids and alkalis.

The main disadvantage of Wurth Cu-800 is that it is packaged only in aerosol cans, which is not always convenient (for example, outdoors at low temperatures).

Packs

• 300 ml aerosol can

Loctite LB 8007

Loctite LB 8007

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Copper grease to protect metal parts from seizing.

Loctite LB 8007 is designed for use on pins, bolts, flanges and other metal parts that require periodic disassembly. The material protects them from corrosion and seizing, prevents scoring, eliminates the risk of damage to parts during disassembly of connections.

Loctite LB 8007 is used in automotive maintenance, as well as in the industrial sector - in metallurgical, foundry, petrochemical, machine and shipbuilding enterprises.

The upper operating temperature limit for Loctite LB 8007 is +982 °C. Compared to most of the materials described above, this is not the best indicator, especially in combination with the high price of this lubricant.

Packs

• stick 20 g, can 454 g, aerosol can 400 ml

Where are copper greases used and how do they differ from each other?

Anti-seize lubricants containing copper particles are used on all types of metal threaded connections, sliding surfaces, terminals, flanges, nuts and bolts, hydraulic assemblies, hubs, brake pads, and a variety of other parts that require protection against corrosion, seizing and galling.

The more copper in the composition of the lubricant, the better its extreme pressure and anti-corrosion properties are manifested. Thick paste materials can contain up to 60% solid lubricant particles.

When heated, the base oil evaporates, and the copper powder is firmly held on the friction surfaces and works as a dry lubricant.

Copper lubricants are available not only in plastic form, but also in the form of aerosols. They differ in consistency and the presence of certain additives in the composition. In order to improve performance, manufacturers enrich their products with fine graphite, additives, and corrosion inhibitors.

When choosing copper grease, it is worth considering its purpose, operating conditions and application possibilities. For example, for car maintenance it is more expedient to use sprays - they do not require the use of an additional tool and easily penetrate into hard-to-reach places.

Both aerosol and plastic formulations are suitable for solving everyday problems. In the industry, pastes are most in demand - they are economically consumed and demonstrate the highest load-bearing capacity.

Copper grease - application, characteristics and selection

Copper-based lubricants protect threaded connections from welding, wear, seizing due to the high thermal stability of its constituent elements.

Copper grease will protect your equipment from the influence of the working environment (moisture, chemicals, steam), high loads and corrosion, including pitting, withstands high temperatures (up to 1100 degrees). Provide reliable protection in a wide temperature range and reduce the coefficient of friction.

Copper grease is used in many industries:

• automotive - for lubricating exhaust manifold studs, lamb probe, wheel hub studs, non-working surfaces of brake pads and noise damping plates, spark plugs and brake mechanism, used for exhaust system treatment , prevents threaded connections from seizing, protects against moisture penetration corrosion
• metallurgical - as an emergency and for low-speed friction units in a fairly wide temperature range
• foundry - processing of mold fasteners requires the use of special tools
• in the production of petrochemicals - lubrication of flange connections, fasteners and threads.

Grease with copper does not lose its properties in a fairly wide temperature range from -30°C to 1000°C, prevents seizing, effectively reducing the coefficient of friction and forming a protective anti-corrosion film, and has a wide range of applications.

The right choice, regular application, good surface preparation for application - this is what will save your equipment from wear and ensure its reliable operation.

The composition of consistent copper paste can be represented as follows: base oil (synthetic, mineral or semi-synthetic), thickener, fine copper (a number of lubricant parameters depend on the degree of dispersion - such as hiding power, friction coefficient, electrical conductivity) and corrosion inhibitor. In the event that you intend to use the lubricant at temperatures below minus 30, the lubricant must be based on a synthetic or polyester base oil.

Copper-filled high-temperature pastes are used to protect a wide variety of threaded connections, studs, screws, used to treat non-working surfaces of brake mechanisms, to lubricate bearings, valves, valves, conductive terminals, spark plugs, threaded joints of flange pins exposed to high temperatures, etc. .P.

They are also used when performing service work in car centers for processing hub bolts and axle shaft flanges with drum brakes.

Benefits of copper grease:

1. Reduced coefficient of friction in bearings and fasteners of equipment and tools
2. Corrosion protection for use in aggressive environments
3. Wide range of applications
4. Increasing the cycles of work of threaded connections, protecting the thread from breaks and wear, reducing friction
5. Improving conditions and reducing labor costs during the installation and dismantling of equipment.
6. Protection against sticking, welding, increasing the load capacity of the connection and facilitating operation
7. Prevents brake sticking

Copper paste ROX Cu-650 was developed by us on the basis of three years of research and a wide variety of tests at one of the largest enterprises in the domestic military-industrial complex - the Ural Bureau of Heavy Engineering and can be used instead of common imported products: Kupferpaste Divinol, CRC Copper Paste, Kupfer -Paste LiquiMoly. When applied to threaded connections, the lubricant is efficient at temperatures from -40°C to 1100 °C.

Application

Before applying copper paste, the surface of a threaded joint, bearing or other assembly must be cleaned of dirt, residues of old lubricants, it is required to apply in small quantities - it will be more convenient to do this on the thread with a brush (try to use a brush made of synthetic materials, they absorb less and apply better). After applying to the threaded connections and completing the installation, the excess can be removed; when processing the bearing, we recommend running in - turn the lubricated bearing about 10 times in both directions and remove excess grease.

Copper-based pastes have found their field of application in car services and service centers for processing threaded connections, since according to statistics, more than 60% of the time when repairing a car takes the dismantling of fasteners. Processing fasteners avoids sticking and wear and makes it easier to repair your car.

How to choose copper grease?

Selection should be made based on your needs. It is important to understand at what temperatures copper paste will work? Will you put it in a rotating assembly or in a static threaded connection, such as spark plugs (in the first case, the viscosity of the base oil is important to you, in the second case it is not so critical). How high are the temperatures in your friction unit (the temperature of the medium and the bearing is not the same).

Pay attention to whether there is a corrosion inhibitor in the composition - this will both extend the life of the lubricant itself and protect your assembly from corrosion, and since many packages of modern additives, in addition to corrosion resistance, also improve tribological characteristics, this will most likely increase the load capacity pastes. We use in our production the best additive packages of the world's leading manufacturers from Germany, the USA and Russia.

High temperature copper grease "Rox CU-650" - developed by us for wide application and has a universal composition based on high-quality additive packages and semi-synthetic base oil, contains fine copper powder, prevents seizing and allows you to replace most imported pastes, significantly saving your budget. Characteristics are available at the link - Rox CU-650

Rox CU-650 high temperature grease is made on the basis of a base oil with a high viscosity index, thanks to which it does not slip from the surface, has high adhesion to metal - this allows it to be used in parts and joints with large enough gap.

Lubrication provides reliable operation of mechanisms operating in the most difficult conditions, effectively eliminates sticking and ensures trouble-free mounting / dismounting. Thanks to the imported additive package, the paste has high tribological characteristics and protects against corrosion under the most severe conditions.

In order for the lubricant to work correctly, it is important not only to choose the right material, but also to apply it correctly.

Before applying to the surface, ensure that the surface is cleaned of dirt, dust and residues of the previous lubricant, it is also advisable to wash the part in solvent or gasoline, after drying, apply lubricant in sufficient quantity, but without excess, if any, excess lubricant should be remove with a rag. In the case of application to threads, continuous application to the surface of the assembly unit should be ensured.

Features of copper lubricants as metal cladding materials

Reduction of friction and wear of metal surfaces is the main purpose of grease lubricants. Laboratory studies confirm that the introduction of finely dispersed copper powder, as a soft metal, improves the anti-friction effect, but, most importantly, contributes to the continuous generation of a lubricating film in the contact zone of rubbing surfaces. This property makes copper lubricants especially valuable and can significantly increase the efficiency of maintenance of components where elements from titanium and austenitic steel alloys are present.

The molecular and colloidal structure of metal cladding lubricant films differs significantly from conventional plastic materials. With the introduction of finely dispersed copper into the lubricating medium, the range of loads until the moment of surface weldability increases by almost 1. 5–2 times and a thin, only a few atomic layers servovite film is formed, which is capable of self-healing and creates the effect of wearlessness. It is very resistant to:

• tearing;
• oxidation;
• dusting with suspensions.

The formation of a servovite film causes an increase in the area of ​​actual contact of the surfaces, due to which uniformly distributed elastic deformations occur in the mating planes. High thermal-oxidative resistance critically reduces the appearance of oxide films and stresses are compiled in an ultra-thin surface layer. Metal microparticles and porous wear products are electrically charged as a result of friction and under its influence are retained in friction nodes and more evenly concentrated in gaps, micropores and cracks. They are transferred from one surface to another and thus protect them from destruction. This situation contributes to a multiple reduction in wear not only of the contact surfaces, but also of the machined parts as a whole.

The entire range of copper lubricants is characterized by improved anti-friction, anti-wear and extreme pressure properties. They provide excellent resistance to moisture penetration, vapors and volatiles and are excellent in preventing weldability and seizing shear moments, as well as:

• triple the relubrication interval;
• reduce friction losses by almost 200%;
• are very economical and can reduce lubricant consumption by 2 ÷ 2.5 times.

Compared to analogues, copper metal-clad lubricants do not drip and are resistant to extrusion. They have increased load capacity and high strength, and thus provide long-term and stable operation without jamming of rubbing surfaces. The low coefficient of friction also contributes to minimal physical wear of the metal surface structure. Minimal destructuring, in turn, significantly reduces the degree of contamination of the lubricating layer with wear products.

In addition, the properties of copper greases can also be optimized by adding individual or complex additives. The physical, mechanical and tribological properties, combined with the extended temperature range, make them versatile in use and can significantly increase the profitability of the production cycle. The economic effect associated with the use of copper lubricants has been successfully achieved in various sectors of the national economy.

Based on the use of copper greases and pastes based on copper, we can summarize:

High temperature copper grease - for machining parts, threaded connections, calipers and mechanisms to reduce wear and protect against corrosion should be used by comparing many factors:

• exposure and temperature range during operation
• possibility of rust (if the surface of the parts is exposed to aggressive attack)
• speed and nature of rotation or vibration loads

Copper greases and pastes based on mineral oil should be used in the operating temperature range from minus 25 to + 650 degrees, since at lower temperatures the base oil will simply harden.

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