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Coated Sand Production Line for Sale1
Casting Forging, Coated Sand Production Line, Coated Sand Equipment
Qingdao Ding Li Machinery Co., Ltd.
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Product DescriptionProduct DescriptionProduct Description of Coated Sand Production LineThe Coated Sand Production Line is a highly automated, continuous system designed for producing high-strength, low-gas-emission, high-flowability thermosetting phenolic resin-coated sand, widely used in shell core making for automotive engine components, exhaust manifolds, turbocharger housings, valves, hydraulic parts, and aerospace precision castings. Utilizing an advanced "counter-flow heating + precise metering + high-speed mixing + rapid cooling" process, the line ensures uniform resin coating on sand particles, resulting in high-quality coated sand with stable and consistent properties—meeting the stringent requirements of automated shell machines.With a capacity range of 1–20 tons/hour, the line supports single-shift, double-shift, or 24-hour continuous operation, and can be flexibly configured as standard, explosion-proof, stainless steel, or intelligent unattended models—suitable for new foundries or retrofit projects. It seamlessly integrates with central sand supply systems, core shooter clusters, and MES platforms to build a modern intelligent foundry sand center.Process Flow1. Raw Material Preparation & ConveyingSilica sand (washed/calcined, 40/70–70/140 mesh) is conveyed via bucket elevator or pneumatic system to a dry sand silo, ensuring stable temperature and moisture ≤0.2%.Liquid phenolic resin, hardener (hexamine), and additives are stored in temperature-controlled tanks and dosed by high-precision metering pumps at preset ratios.2. Sand Pre-heating SystemCold sand enters a counter-flow hot-air heating drum, contacting high-temperature air (250–300°C) in counter-current flow, raising sand temperature to 120–140°C within 8–12 minutes—ensuring uniform heating without premature resin reaction.Hot air is recycled, reducing energy consumption by >30% compared to conventional co-current heating.3. Mixing System (Core Process)Pre-heated sand, resin, and hardener are fed into a high-speed twin-shaft or planetary mixer, where resin coating and initial condensation occur within 60–90 seconds.Mixing homogeneity ≥98%, free from "raw sand" or lumps—ensuring high strength and excellent flowability.4. Cooling & Screening SystemHot coated sand is cooled to ≤50°C in a twin-disk or fluidized bed cooler to prevent over-curing and maintain free-flowing sand.A multi-deck vibratory screen removes lumps and impurities, ensuring proper particle distribution and high fluidity.5. Finished Product Storage & ConveyingQualified coated sand is stored in a finished product silo, then conveyed via screw conveyor, bucket elevator, or pneumatic system to usage points (e.g., shell machine hoppers).Supports multi-route distribution and timed feeding for continuous, stable production.Key FeaturesSuperior Sand Quality, Stable PerformanceCounter-flow heating + high-speed mixing ensures uniform coating. Tensile strength ≥2.5 MPa, gas evolution ≤18 ml/g, fluidity ≥70 mm—meets high-end casting requirements.Fully Automated, Precise & ReliablePLC + HMI + multi-stage feedback control enables automatic ratio adjustment (accuracy ±1%), recipe storage, remote monitoring, self-diagnosis, and data traceability.Energy-Saving & Eco-FriendlyHeat recovery saves >30% energy; enclosed design with pulse cartridge filter (emission ≤5 mg/m3), noise ≤80 dB(A)—environmentally compliant.Modular Design, Easy MaintenanceIndependent modules; wear-resistant, quick-change components (blades, screens, bearings)—long service life, short downtime.Safe & Intelligent ProtectionFeatures temperature interlock, overload protection, emergency stop, explosion-proof motors (optional)—ensures safe operation in high-temperature, flammable environments.Traceable Data, Smart Factory ReadyOptional MES interface, batch management, energy monitoring—enables full data traceability and digital transformation.Main Technical SpecificationsParameterSpecificationModel SeriesTM-1000 / TM-2000 / TM-3000 / TM-5000 Capacity1 ~ 20 t/h Expandable Sand Type40/70 to 70/140 mesh silica sand Heating Temp.120–140°C Mixing Time60–90 seconds Outlet Temp.≤50°C Resin ContentAdjustable Control SystemPLC + 10" HMI + Optional MES/SCADA Total PowerDepending on configuration Weight8–65 tons DimensionsCustomized by model Protection RatingIP54/IP65<br>IP54/IP65 for critical partsTypical ApplicationsCoated sand production for automotive intake/exhaust manifolds, turbocharger housingsShell sand manufacturing for precision valves, hydraulic componentsSand for complex thin-wall castings in aerospace and marine industriesIntegrated with shell machines and core shootersCore equipment for centralized sand supply systems in foundriesCompany ProfileQingdao Dingli Machinery Co., Ltd.Qingdao Dingli Machinery Co., Ltd. is a company specializing in the production of casting machinery equipment. It mainly manufactures equipment for casting clay sand, resin sand, coated sand, wet sand drying, lost foam casting, sodium silicate sand, etc. It can undertake various turnkey projects, including the design, manufacturing, installation and commissioning of mechanical sand processing. Our factory has strong technical strength and advanced processing equipment. We have long-term and close technical cooperation with many senior experts and scholars from domestic universities and research institutions. We can provide users with high-performance, reliable products and satisfactory services.Our company adheres to the principles of promoting enterprise development through technology, prioritizing quality, continuous improvement and customer satisfaction. We are willing to sincerely cooperate with friends from all walks of life to achieve common prosperity.Our company mainly undertakes the following projects:20-180t/h mechanized clay sand processing production line and single machine equipment turnkey project.Annual production of 1000 to 20,000 tons of consolidated resin sand casting mechanized production line and single machine equipment turnkey project.Annual production of 3,000 to 10,000 tons of hot processing coated sand complete equipment and single machine equipment turnkey project.Annual production of 3,000 to 7,000 tons of hot coating sand regeneration complete equipment and single machine equipment turnkey project.5-15t/h sodium silicate mechanical production line and single machine equipment turnkey project.5-30t/h three-stage sand drying equipment and single machine equipment turnkey project.5-40t/h lost foam casting complete equipment and single machine equipment turnkey project and other types of shot blasting cleaning equipment, lifting equipment, conveying equipment, cooling equipment, magnetic separation equipment, environmental protection dust removal equipment.Welcome to contact us~
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