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Product Description of M Series Shell Sand Coating & Mixing Machine
The M Series Shell Sand Coating & Mixing Machine is a high-efficiency heating mixer designed specifically for the hot-box shell sand coating process, suitable for the preheating, mixing, and discharge of phenolic resin-coated sand. Widely used in shell mold/core production for engine manifolds, turbo housings, precision valves, and fittings, the M Series features a thermal oil-heated jacket + high-speed rotor + precise temperature control to uniformly preheat sand (140–160°C) and rapidly melt and coat resin—ensuring a complete, dense resin film on each grain, enhancing shell strength, surface finish, and collapsibility.
Available in batch and continuous models, the M Series handles 100–1500 kg per batch, and can operate standalone or integrate with sand heaters, cooling screens, automatic feeders, and robot core extractors—forming a fully automated shell sand line that meets demands for consistent quality, high throughput, low energy, and minimal resin usage.
Working Principle
Sand Preheating Dry base sand (silica or chromite) enters the heating mixing chamber via elevator or pneumatic conveyor. Thermal oil (180–220°C) circulates through the jacket, uniformly heating the sand to 140–160°C—ensuring consistent grain temperature without hot spots or caking.
Resin Addition & High-Speed Mixing Once target temperature is reached, phenolic resin powder is fed via a screw metering feeder, while additives (e.g., stearic acid, hexamine) are injected. The high-speed rotor (150–300 rpm) rapidly melts and coats the resin—achieving uniform coverage in 60–120 seconds, producing free-flowing coated sand.
Rapid Cooling & Discharge After mixing, the coated sand is rapidly discharged via pneumatic/electric valve to a cooling screen or buffer hopper to prevent premature curing. Some models feature integrated cooling ducts for direct air cooling.
Fully automated via PLC + HMI, with temperature profiling, recipe storage, data logging, fault alarms. Optional spray-cleaning system prevents resin buildup and extends service life.
Key Features
Thermal Oil Heating, Uniform & Precise Temperature Jacketed heating ensures sand temperature accuracy ±2°C, avoiding localized overheating and resin charring—ensuring consistent coating quality.
High-Speed Rotor, High Coating Efficiency Rotor tip speed 20–28 m/s, mixing uniformity ≥98%, resin consumption reduced by 10–15% vs. conventional mixers—lowering production costs.
Smart Temperature Control, Repeatable Process Multi-stage temperature profiling for preheating, holding, mixing Infrared pyrometer monitors sand temp in real-time, auto-adjusts power Recipe storage & recall ensures process consistency across sand types
Robust Structure, Wear-Resistant Mixing chamber, rotor, and liners made of wear-resistant alloy (NM400) or ceramic coating—critical parts last ≥6,000 hours; overall lifespan ≥10 years.
Automated Integration, Easy Operation PLC + color HMI, remote monitoring, MES integration Optional automatic feeder, cooling interlock, robot interface Batch counting, output tracking, energy analysis supported
Easy Maintenance, Minimal Downtime Top quick-opening cover for cleaning and liner replacement Optional pull-out rotor design—replaced within 2 hours Modular structure with high part commonality
Main Technical Specifications
Batch Capacity
100–150 kg
300–500 kg
1000–1500 kg
Sand Type
Phenolic Resin-Coated Sand (Hot-Box)
Phenolic Resin-Coated Sand (Hot-Box)
Phenolic Resin-Coated Sand (Hot-Box)
Heating Method
Thermal Oil Heating (180–220°C)
Thermal Oil Heating (180–220°C)
Thermal Oil Heating (180–220°C)
Mixing Motor
7.5 kW
18.5 kW
37 kW
Rotor Speed
150–300 rpm VFD adjustable
150–300 rpm VFD adjustable
150–300 rpm VFD adjustable
Mixing Time
60s–120s
60s–120s
60s–120s
Temp. Accuracy
±2°C
Control System
PLC + 7"/10.1" Color HMI
PLC + 7"/10.1" Color HMI
PLC + 7"/10.1" Color HMI
Communication
MODBUS RTU / PROFINET
MODBUS RTU / PROFINET
MODBUS RTU / PROFINET
Weight
1,200 kg
2,800 kg
5,500 kg
Protection Rating
IP55 (Control Cabinet IP65)
IP55 (Control Cabinet IP65)
IP55 (Control Cabinet IP65)
Typical Applications
Shell mold/core production for engine manifolds and turbo housings
High-surface-quality core production for valves and pumps
Integrated with sand heater, cooler, and robot for full automation
Connects to MES for traceability and process optimization
Company Profile
Qingdao 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~
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2013
Ecer Certification：
Verified Supplier
Qingdao dingli machinery Co., Ltd is located in the famous coastal city, the hometown of casting machine - Qingdao, since its establishment, we are always adhering to the traditional industries with the aim of combined closely with the foreign advanced technology, through the introduction, cooperati... Qingdao dingli machinery Co., Ltd is located in the famous coastal city, the hometown of casting machine - Qingdao, since its establishment, we are always adhering to the traditional industries with the aim of combined closely with the foreign advanced technology, through the introduction, cooperati...
