Orbit Coatings launched heat resistant paints and powder coatings to prevent corrosion in mufflers.

Pune based leading powder coatings manufacturing company Orbit Coatings Pvt Ltd has announced today new products in heat resistant paints and powder coatings. The new series of products include heat resistant paints and powder coatings to prevent corrosion in mufflers.

The main reason behind the premature muffler failure is because of the corrosion, fatigue or combination of the both. Orbits heat resistant products are effective to prevent corrosion in mufflers an. Orbits heat resistant powder coatings sustain temperature up to 600 degree Celsius.

About Orbit Coatings:

Orbit Coatings is a technology leader in powder coatings technology. It specializes in manufacturing of powder coatings and heat resistant paints. Orbit Coatings is an ISO 9001: 2000 certified company with state of the art manufacturing plant and testing laboratory in Pune, Maharashtra, India.

 

Visit our website http://www.orbitcoatings.com or call us at 20-25536626 for more details.

Pitting corrosion in the wet section (rear section) of the automotive exhaust systems

Inside the system, condensation of combustion gases produces sulphurous acid, sulphuric acid and low levels of hydrochloric acid, creating critical conditions with acidic pH-values. These condensates, combined with an accumulation of chloride ions and deposits of electrochemically active soot particles, result in a substantial wet corrosive impact on the inner parts of the components.Various stainless steel grades like ferritic, austenitic and manganese containing austenitic steel are used to achieve an optimal combination of properties in the rear section. The resistance of different steel grades to pitting corrosion can generally be compared on the basis of their alloy composition. For pitting corrosion resistance of a material it is important that the dissolution rate is to be low and the material should possess the ability to repassivate quickly during the idle periods.

The hot front section of the exhaust system (manifold pipes, catalytic converter) requires steels with a high scaling resistance, an ability to resist oscillating stresses due to vibration, optimal elevated-temperature and creep strength, minimum susceptibility to embrittlement and a low coefficient of thermal expansion [4].

In the center section of the exhaust system (center muffler, connecting pipes) resistance to both high temperatures and wet corrosion are needed. Depending on running conditions, either hot conditions prevail (full throttle) or wet corrosion loading dominates (short-distance driving) [4].

In the rear section (rear muffler) wet corrosion becomes the main factor. Inside the system, condensation of combustion gases produces sulphurous acid, sulphuric acid and low levels of hydrochloric acid, creating critical conditions. These condensates, combined with an accumulation of chloride ions, some acidic pH values and deposits of electrochemically active soot particles, can result in substantial wet corrosive loading on the inner surfaces of the components. Compared with this, the external corrosive loads through rainwater, road dust, slush and de-icing salts are almost negligible.

Read more about Pitting corrosion in the automotive exhaust systems

Cost Effective Heat Resistant Paints and Powder Coatings

Powder coatings are more environment friendly compared with conventional liquid paints. The reason to use powder coating is that it does not require solvents, and emits almost zero or near to zero volatile organic compounds (VOC). Orbit Coatings offers the world’s best renowned products of Powder Coatings for various industrial applications like exhaust systems for tractors, generators, earth-moving, two wheelers, four wheelers, heavy vehicles, and also cookware, marine, oil gas, textile, chemical industries.

Key Features Heat Resistant Coatings:

• Superior Technology.
• Heat Resistant Powder Coatings.
• Sustains Temperatures Up To And Beyond 600 Degree Celsius.
• Protects From High Heat and Corrosion After Heat Cycles.

The Advantages of Heat Resistant Powder Coatings

• Easy to use.
• Eco-friendly with neat and clean applications.
• Economical due to minimal wastages.
• Effective protection at higher temperatures
• Reduced process time
• VOC almost 0
• Reasonable plant cost

Besides manufacturing of powder coatings, Orbit Coatings also offers heat resistant paints for various challenging industrial applications like exhaust systems for tractors, generators, earth moving, two wheelers, four wheelers, heavy vehicles, and also cookware, marine, oil gas, textile, chemical industries.

Heat Resistant Paints:

• Superior Technology.
• High Heat Resistant Paints.
• Sustains Temperature Up To 600 Degree Celsius.
• Protects From High Heat and Corrosion After Heat Cycles

Orbit Coatings is a technology leader in Powder Coatings. ORBIT – HR 600 Powder is one of the top Innovative brand of Orbit Coatings, these powder coatings are specially designed to protect various application from up to 600 and 650 Celsius and corrosion after heat.

Find more about Orbit Coatings

  

Heat Resistant Paints, Heat Resistant Powder Coatings, Powder Coatings, heat resistant aluminum paint, aluminum powder coatings

 

Corrosion in automotive exhaust muffler

 The exhaust system of an automotive muffler has lots of prerequisite to accomplish. The foremost one is to reduce the noise level produced by the engine, adequate insertion loss, to access the waste gases out from the rear part of automobile system, to play down the reduction in engine performance, to have a satisfactory service life, back pressure, shape, style, and cost (1). A large variety of exhaust silencers having different design characteristics are available in an automotive market. They can be divided into various types like clamshell mufflers, wrapped mufflers, deep drawn mufflers, lock seam mufflers, welded mufflers, and so forth.

The main reason behind the premature muffler failure is because of the corrosion, fatigue or combination of the both. About 80% of the failure is due to corrosion and rest is by fatigue.

Some of the corrosion mechanisms affecting are as below:

(i) Internal corrosion due to acidic condensate.

(ii) External corrosion due to de-icing agents used on icy roads.

(iii) Material sensitization, especially on the hot spot (material temperatures up to 500º C for rear muffler and 600 ⁰C for front muffler.

(iv)Static loads due to heating and cooling cycles (low cycle fatigue).

(v) Vibrations from the engine (high cycle fatigue) (2).

Read more about corrosion in exhaust systems.