Ferrite-Pearlite ductile iron is a type of ductile iron known for its high strength and toughness, with its primary microstructure consisting of ferrite and pearlite. This material exhibits excellent wear resistance and corrosion resistance, as well as high fracture toughness and ductility. It finds wide applications in various industries: In the mechanical manufacturing sector: Manufacturing components such as machine tool bodies, mechanical parts, reducers, and hydraulic cylinder sleeves. In the automotive manufacturing sector: Manufacturing components such as cylinder blocks, cylinder head covers, and crankshafts for automotive engines. In the energy sector: Manufacturing components such as turbochargers, centrifugal pumps, and gears. With continuous technological advancements, it is believed that Ferrite-Pearlite ductile iron will continue to find increasingly widespread applications in the future.
High-silicon molybdenum ductile iron (5% silicon content) finds extensive applications in high-temperature castings for automotive engines, particularly in exhaust systems (e.g., exhaust pipes, turbocharger housings, valve bodies, valve discs, etc.). This is primarily due to its excellent properties including high-temperature resistance, thermal fatigue performance, outstanding oxidation resistance, and good high-temperature creep resistance. Our company has now developed precision-cast high-silicon molybdenum ductile iron valve discs, valve bodies, and other castings, featuring high dimensional accuracy, delicate appearance, and excellent performance, which have been utilized in exhaust systems for heavy-duty trucks.
High-silicon molybdenum ductile iron (5% silicon content) finds extensive applications in high-temperature castings for automotive engines, particularly in exhaust systems (e.g., exhaust pipes, turbocharger housings, valve bodies, valve discs, etc.). This is primarily due to its excellent properties including high-temperature resistance, thermal fatigue performance, outstanding oxidation resistance, and good high-temperature creep resistance. Our company has now developed precision-cast high-silicon molybdenum ductile iron valve discs, valve bodies, and other castings, featuring high dimensional accuracy, delicate appearance, and excellent performance, which have been utilized in exhaust systems for heavy-duty trucks.
Product Application: Applied to the first groove of aluminum pistons in internal combustion engines, primarily used in diesel engine aluminum pistons, with aftermarket sales predominating. Features: 1. Integration of Wear-Resistant Insert Rings with Internal Cooling Channels through brackets offers several advantages over pistons simultaneously using insert rings and salt cores: (1) Single positioning reduces operational and process difficulties and CT time, improving production efficiency. (2) Before casting, simple shot blasting and preheating of wear-resistant insert rings are sufficient, eliminating the need for separate treatment (3) Reduces quality loss caused by using salt cores, enhancing piston yield.(4) Decreases flushing procedures and costs associated with salt cores. (5) Minimizes wastewater handling and management. 2. Customized Design: Tailored design of bracket-type internal cooling channel wear-resistant insert rings to meet diverse piston and industry requirements, ensuring optimal adaptability. 3. Material: The wear-resistant insert rings are made of high-nickel austenitic cast iron, while aluminum pistons are typically made of silicon-aluminum alloy. Their similar coefficients of expansion form the basis for the application of wear-resistant insert rings in the first groove of pistons. Wear Resistance: High-nickel austenitic cast iron exhibits outstanding wear resistance, optimizing friction with piston rings at high temperatures, thereby increasing piston lifespan. Thermal Conductivity: The material boasts excellent thermal conductivity, facilitating heat transfer and dissipation to maintain piston head temperature within a reasonable range. Corrosion Resistance: Strong corrosion resistance enables adaptation to various working environments, ensuring stability under different conditions. Environmental Friendliness: Prolonging piston lifespan ensures combustion chamber sealing during piston operation, enhancing combustion efficiency, and reducing exhaust emissions. Precision Machining: Precise machining techniques during manufacturing ensure products meet design requirements, enhancing performance.
Product Application: Used in the first groove of aluminum pistons in internal combustion engines, initially applied to diesel engine aluminum pistons, with wear-resistant insert rings widely used and promoted on gasoline engine aluminum pistons in recent years as industry demands for gasoline engine pistons have increased. Features: Compared to traditional aluminum pistons, pistons with insert rings have seen an average increase in lifespan of 5-8 times, enhancing energy utilization and combustion efficiency, while reducing emissions. Additionally, it significantly improves the performance and reliability of internal combustion engines. Material: The wear-resistant insert rings are made of high-nickel austenitic cast iron, while aluminum pistons are typically made of silicon-aluminum alloy. Their similar coefficients of expansion form the basis for the application of wear-resistant insert rings in the first groove of pistons. Wear Resistance: High-nickel austenitic cast iron exhibits outstanding wear resistance, optimizing friction with piston rings at high temperatures, thereby increasing piston lifespan. Thermal Conductivity: The material boasts excellent thermal conductivity, facilitating heat transfer and dissipation to maintain piston head temperature within a reasonable range. Corrosion Resistance: Strong corrosion resistance enables adaptation to various working environments, ensuring stability under different conditions. Environmental Friendliness: Prolonging piston lifespan ensures combustion chamber sealing during piston operation, enhancing combustion efficiency, and reducing exhaust emissions. Precision Machining: Precise machining techniques during manufacturing ensure products meet design requirements, enhancing performance.
Product Application: Salt cores, when flushed out of the piston, form internal cooling passages, reducing the temperature of the piston head and the first ring groove area, thus enhancing the piston's lifespan. Features: 1. High Strength, Excellent High-Temperature Resistance: Salt cores do not fracture when preheated in a 720�°C furnace or during piston casting operations. 2. Immersion Resistance: Salt cores do not rupture or generate gas when poured with aluminum solution, nor do they cause salt to float on the solution's surface. 3. Easy Dissolution, Quick Flushing: After casting into the piston blank, salt cores can be completely flushed out within a maximum of 10 seconds under a water pressure of 200 bar. 4. Surface Quality: Salt cores exhibit no quality defects on the surface, such as cracks, sharp edges, burrs, notches, oil stains, etc., with smooth arc transitions. In modern internal combustion engines, pistons inevitably bear increasing thermal loads. Particularly with the increasing use of turbocharged engines in mid-to-high-end vehicles worldwide, turbocharging technology has become popular to enhance engine power and torque, improve fuel economy, reduce exhaust emissions, and lower fuel consumption. To meet the growing power requirements and ensure the safety of piston operation, pistons with internal cooling passages, formed by salt cores during the aluminum piston casting process and then removed by water flushing after casting, have become the inevitable choice for high-speed, high-power engines.
The production of high-precision metals is inseparable from high-end manufacturing equipment, testing equipment and a stable production environment. In order to meet these conditions, Zhengdao Machinery has specially built a mold production workshop covering an area of 2,000 square meters. The mold workshop is equipped with various mold processing and manufacturing process equipment, including wire cutting, precision engraving machines, spark machines, four-axis turning and milling compound machine tools, turning and milling compound machining centers, three-axis machining centers, CNC lathes, drilling machines and other mold production equipment. The processing equipment brands are OKUMA, FANUC, Jinshang, and Harting well-known brands. All equipment has the production capacity to manufacture high-precision molds. The company employs professional technical consultants in terms of mold manufacturing talents for mold design and mold manufacturing to ensure the stability of mold production quality. There are 5 senior technicians in the production link, with more than 15 years of production experience and technology, and product production has strict quality process, manufacturing cost and delivery time control, and has a group of high-quality and highly skilled staff; at the same time, we also have independent and complete after-sales service. Testing equipment: Hexagon 3D coordinates, Tokyo precision profiler, metallographic microscope, hardness tester, a full set of processing and testing instruments. Professional quality inspectors conduct all-round testing on the shipped products to ensure that the quality of the shipped products is 100% qualified.
These cast iron skulls are a by-product derived from the cast iron foundries. The byproduct is a ferrous by-product which can be utilised in an electric arc furnace to produce crude steel. Physical Description On visual inspection, it appears to be made up of irregular shapes. The material is separated by magnet and screener. Packing: Loose in container Loading: in 20 Container For further information, please feel free to contact us.
Cast Iron Skulls
