High Quality Manufacturer Upper Roller EC460BLC Top Roller
Our progress depends within the advanced products, fantastic talents and repeatedly strengthened technology forces for High Quality Manufacturer Upper Roller EC460BLC Top Roller, To acquire a consistent, profitable, and constant development by getting a aggressive advantage, and by continuously increasing the value added to our shareholders and our employee.
Our progress depends within the advanced products, fantastic talents and repeatedly strengthened technology forces for China Excavator Part, High Quality Manufacturer Upper Roller EC460BLC, Top Roller, TRACK ROLLER, Please genuinely feel free to send us your requirements and we are going to respond for you asap. We’ve got a experienced engineering group to serve for your just about every comprehensive needs. Cost-free samples could be sent to suit your needs personally to understand much more information. In an effort to meet your requires, you should seriously feel free to make contact with us. You may send us emails and contact us directly. Moreover, we welcome visits to our factory from around the globe for much better recognizing of our organization. nd things. In our trade with merchants of numerous countries, we usually adhere for the principle of equality and mutual benefit. It is truly our hope to market, by joint efforts, each trade and friendship to our mutual advantage. We look forward to getting your inquiries.
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.
