DX225LCA Carrier Top Up Upper Roller K1037728 suitable for Doosan
continue to improve, to ensure product quality in line with market and customer standard requirements. Our company has a quality assurance system have been established for DX225LCA Carrier Top Up Upper Roller K1037728 suitable for Doosan, We’ve been searching ahead to building positive and helpful links with all the providers within the planet. We warmly welcome you to definitely get in touch with us to begin discussions on how we are able to bring this into being.
continue to improve, to ensure product quality in line with market and customer standard requirements. Our company has a quality assurance system have been established for DX225LCA Carrier Top Up Upper Roller K1037728 suitable for Doosan, We’ve been proud to supply our products and solutions to every auto fan all around the world with our flexible, fast efficient services and strictest quality control standard which has always approved and praised by customers.
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.The function of top rollers is to carry the track link upwards, make certain things are linked tightly, and enable the machine to work faster and more steadily. Our products use special steel and produced by new process. Every procedure goes through strict inspection and the property of compressive resistance and tension resistance can be ensured.
Our carrier rollers are applicable for Komatsu, Hitachi, Kobelco, Daewoo, Hyundai, Volvo, Jcb etc. We can also offer OEM service according to your drawings or samples.
Products are exported to Southeast Asia and Europe and the America, enjoy high reputation in the domestic and foreign markets.
