Material properties of Sand-cast iron ball-milled castings QT500-7
High strength and toughness Ductile iron is made by spheroidizing to make graphite distributed in spherical shape, which has both the casting properties of cast iron and the mechanical strength close to steel. Its tensile strength can reach 400-900MPa and its elongation can reach 18%27.
QT400 series: such as QT400-18 (tensile strength> 400MPa, elongation> 18%), which is widely used in automotive chassis, pipe fittings and other scenarios requiring high toughness.
QT500 series: such as QT500-7 (tensile strength> 500MPa, elongation> 7%), suitable for high load mechanical parts (such as crankshaft, gearbox) and municipal cast pipe outlet.
QT600 and above series: such as QT600-3 (tensile strength> = 600MPa, elongation>=3%), QT700-2, used for crankshaft, gear, heavy machine tool and other high strength wear parts.
1. Municipal and infrastructure projects
Water supply and drainage pipe network: ductile iron pipe has become the core material of urban domestic water, agricultural irrigation and industrial water diversion pipeline due to its pressure resistance and corrosion resistance. A large number of ductile iron pipes are exported to the Middle East, Africa and other regions with strong infrastructure demand.
Water conservancy facilities: pipeline systems for water diversion projects and flood control facilities to meet the requirements of high strength and long life transportation.
2. Automobile manufacturing
Key components: Exported ductile iron parts are mainly used for automobile engine crankshaft, gear, suspension system and other components. For example, QT600-03 castings are suitable for high load crankshaft and connecting rod, which is supplied to European, American and Southeast Asian automobile industry chain.
Lightweight demand: Replace traditional steel with high strength and toughness materials (such as QT900 series) to facilitate the lightweight design of new energy vehicles.
3. Industrial machinery and equipment
Construction machinery: export heavy machine tool guide rails, forging cylinder and other parts, using ductile iron wear resistance and compressive strength to support mining machinery, construction equipment manufacturing.
Valve manufacturing: ductile iron check valve, gate valve and other fluid control equipment are exported to countries with concentrated oil and chemical industries due to their high strength and high sealing.
4. Environmental protection and energy equipment
Environmental protection facilities: export for wastewater treatment equipment, waste incinerator components, etc., adapt to corrosive media and high temperature and high pressure environment.
Energy transmission: ductile iron pipes are widely used in natural gas and oil transportation systems, such as the construction of supporting pipe networks in oil and gas fields in the Middle East.
5. Expansion of emerging markets
Demand from developing countries: With the global industrial shift, ordinary ductile iron parts (such as pipes and fittings) are exported to emerging markets such as Southeast Asia and South America to support local infrastructure and industrialization.
High-end manufacturing cooperation: The European and American markets maintain import demand for high-end castings with special alloy treatment (such as corrosion-resistant gears), promoting technical cooperation and customized production.
Technology upgrading: developed countries upgrade to large diameter and special purpose castings, while developing countries undertake the production capacity of ordinary castings, forming a complementary export pattern.
Environmental policy drive: Global environmental standards are becoming stricter, promoting the replacement application of ductile iron in sustainable infrastructure (such as reclaimed water reuse system), stimulating export growth.
1. 20 years of experience in casting cast iron plate, quality assurance, timely delivery
2. Perfect machining and inspection equipment can directly provide finished parts and meet the inspection requirements of customers
3. It has independent import and export rights and can export products to all parts of the world
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