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Why use vermicular graphite alloy cast-iron to make piston rings?

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Why use vermicular graphite alloy cast-iron to make piston rings?

At present, the big, medium and small rings are widely applied throughout the world. Including, flake graphite alloy cast-iron, vermicular graphite alloy cast-iron, and spherical graphite alloy cast-iron.

Why use vermicular graphite alloy cast-iron to make piston rings?

The following are the main performance indicators of such three materials.

Why use vermicular graphite alloy cast-iron to make piston rings?

From the above 11 indicators, the eight performance indicators of vermicular graphite alloy cast-iron are all superior over the flake graphite alloy cast-iron, including:

•Hardness

•Bending Strength

•Modulus of elasticity

•Wear resistance

•Thermal (tangential elasticity disappearance rate)

•Corrosion resistance

•Fatigue strength δ-1

•Impact toughness

 

And other six performance indicators are superior over the spherical graphite alloy cast-iron, including:

•Hardness

•Linear expansion coefficient

•Thermal (tangential elasticity disappearance rate)

•Wear resistance

•Thermal conductivity

•Anti-fusion wear capacity

 

In addition, the vermicular cast-iron rings have been used for many years as the first gas rings in the high-speed or high horsepower diesel engines and proven that they are safe and reliable, the vermicular cast-iron rings have a good comprehensive application performance. So it is the best option to use vermicular graphite alloy cast-iron as the first gas ring material in the high-speed or high horsepower marine diesel engines.

 

The vermicular graphite alloy cast-iron is a sheet-like structure, similar to the tip of the bamboo leaf is round, the pieces are interlocked, the three-dimensional structure, the internal graphite forms a natural oil storage passage, so the product has very good flexibility, which is N times that of the gray cast iron.

 

The use of vermicular graphite alloy cast-iron in the first gas ring is a major feature of our company. We use a single-piece casting process and barrel casting process; small batch and multi-batch production; complete model; fast delivery; coverable cylinder diameter is φ150~φ1000mm; service life is up to 20,000 hours, about 2~3 years.

Why use vermicular graphite alloy cast-iron to make piston rings?

We use electroplating, composite plating, and phosphating for heat treatment.

Why use vermicular graphite alloy cast-iron to make piston rings?

From the four aspects of hardness, elasticity, light transmission, and geometrical dimensions, all are tested.

Why use vermicular graphite alloy cast-iron to make piston rings?

We have the first CNC internal and external circular elliptical copying lathe, which can produce various types of piston rings according to the user's actual sample or design drawings.

Why use vermicular graphite alloy cast-iron to make piston rings?

At present, we are the only company that uses vermicular graphite alloy cast-iron as the first gas ring material in the high-speed or high horsepower marine diesel engines in China. Our goal is to become an OE supplier for a two-stroke low-speed marine piston ring.

 

Pub Time : 2019-07-08 18:38:25 >> News list
Contact Details
Changsha Haochang Machinery Equipment Co., Ltd

Contact Person: Mrs. Susen Deng

Tel: 86-13508470772

Fax: 86-731-85133216

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