Good Quality China D60 D65 D7g D85 Dozer Excavator Bottom Support Track Roller Bulldozer

That has a positive and progressive attitude to customer’s interest, our organization consistently improves our products quality to satisfy the demands of shoppers and further focuses on safety, reliability, environmental specifications, and innovation of Good Quality China D60 D65 D7g D85 Dozer Excavator Bottom Support Track Roller Bulldozer, We appreciate your enquiry and it’s our honor to work with every friend worldwide.
That has a positive and progressive attitude to customer’s interest, our organization consistently improves our products quality to satisfy the demands of shoppers and further focuses on safety, reliability, environmental specifications, and innovation of Bottom Roller, China Track Roller, Our next goal is to exceed the expectations of every client by offering outstanding customer service, increased flexibility and greater value. All in all, without our customers we do not exist; without happy and fully satisfied customers, we fail. We’re looking for the wholesale, Drop ship. Make sure you contact us if you are interesting our solutions. Hope to do business with you all. High quality and fast shipment!

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.That has a positive and progressive attitude to customer’s interest, our organization consistently improves our products quality to satisfy the demands of shoppers and further focuses on safety, reliability, environmental specifications, and innovation of Good Quality China D60 D65 D7g D85 Dozer Excavator Bottom Support Track Roller Bulldozer, We appreciate your enquiry and it’s our honor to work with every friend worldwide.
Good Quality China Track Roller, Bottom Roller, Our next goal is to exceed the expectations of every client by offering outstanding customer service, increased flexibility and greater value. All in all, without our customers we do not exist; without happy and fully satisfied customers, we fail. We’re looking for the wholesale, Drop ship. Make sure you contact us if you are interesting our solutions. Hope to do business with you all. High quality and fast shipment!