Excavator Undercarriage Partst track roller

We constantly function like a tangible group to ensure that we can give you the very best high-quality and also the very best cost for Excavator Undercarriage Partst track roller, Trust us, you may discover an even better remedy on car elements industry.
We constantly function like a tangible group to ensure that we can give you the very best high-quality and also the very best cost for TRACK ROLLER, Many items fully conform to the most rigorous of international guidelines and with our first-rate delivery service you will have them delivered at any time and in any place. And because Kayo deals in the entire spectrum of protective equipment, our customers don’t have to waste time shopping around.

Brief Introduction:

Ductile iron, also known as ductile cast iron, nodular cast iron, spherical graphite iron, spherical graphite cast iron and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis. While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions. Ductile iron is not a single material but part of a group of materials which can be produced with a wide range of properties through control of their microstructure. The common defining characteristic of this group of materials is the shape of the graphite. In ductile irons, graphite is in the form of nodules rather than flakes as in grey iron. Whereas sharp graphite flakes create stress concentration points within the metal matrix, rounded nodules inhibit the creation of cracks, thus providing the enhanced ductility that gives the alloy its name.

Austempered ductile iron (ADI; i.e., austenite tempered[7]) was discovered in the 1950s but was commercialized and achieved success only some years later. In ADI, the metallurgical structure is manipulated through a sophisticated heat treating process.

Composition

Mass fraction (%) for ferritic ductile iron castings[8]

Other ductile iron compositions often have a small amount of sulfur as well.

Carbon, 3.2–3.60%

Silicon, 2.2–2.8%

Manganese, 0.1–0.2%

Magnesium, 0.03–0.04%

Phosphorus, 0.005–0.04%

Sulfur, 0.005–0.02%

Copper, <0.40%

Iron, balance

Elements such as copper or tin may be added to increase tensile and yield strength while simultaneously reducing ductility. Improved corrosion resistance can be achieved by replacing 15–30% of the iron in the alloy with varying amounts of nickel, copper, or chromium.

Silicon as a graphite formation element can be partially replaced by aluminum to provide better oxidation protection.[9]

HONGDA Ductile iron castings:

In early of 2021, HONGDA built a new factory to introduce the equipments and production line for Ductile Iron casting.
1. Material: QT450#-10 and Spheroidization rate is over level III to get a good quality of castings to support your request.
2. Automated production line to reach a high efficiency and large capacity production, 550T/Month, to back your urgent need.
3.Applications: ductile iron castings for roller collar, idler bracket and so like parts castings within 70KGS.We constantly function like a tangible group to ensure that we can give you the very best high-quality and also the very best cost for Popular Design for China PC1250 EXCAVATOR Undercarriage Parts Carrier Roller, Trust us, you may discover an even better remedy on car elements industry.
Popular Design for China PC1250 TRACK ROLLER /BOTTOM ROLLER / LOW ROLLER Many items fully conform to the most rigorous of international guidelines and with our first-rate delivery service you will have them delivered at any time and in any place. And because Kayo deals in the entire spectrum of protective equipment, our customers don’t have to waste time shopping around.