Products

About This Project

Shandong Jinyi New Material Co., Ltd. (abbreviated as JINYI), a key provider of integrated molten aluminum purification solutions since 2014, specializes in R&D and production of aluminum liquid launder dams—an essential supporting component for its integrated launder systems, degassing units, and plate-type filters. As a core part of JINYI’s “full-process molten aluminum control system,” the launder dam is engineered with proprietary high-silicon melting material and N17 special ceramic material, focusing on precise flow control of molten aluminum. It has been widely applied in high-precision aluminum alloy casting fields (e.g., automotive lightweight parts, micron aluminum foil, printing PS baseboards) and won market recognition for its corrosion resistance, long service life, and flexible operation.

Core Components of JINYI Aluminum Liquid Launder Dam

The launder dam adopts a “functional module + structural support” design, ensuring stable performance and easy maintenance. Key components include:

1. Dam Liner (Core Functional Part)
   • Material Options:
     • High-silicon melting material: SiO₂ content ≥98.5%, produced via JINYI’s vacuum pressure sintering process—features high density (1.8-2.0 g/cm³), strong erosion resistance against molten aluminum, and no reaction with Al, Mg, Si in alloys.
     • N17 special ceramic material: Lightweight (density 0.8-1.2 g/cm³), excellent thermal shock resistance (no cracking when temperature changes by 350℃ within 1 hour), suitable for frequent temperature fluctuation scenarios.
   • Surface Treatment: Optimized for use with JINYI’s BN (boron nitride) coating—reduces aluminum adhesion rate to ≤0.3%, avoids secondary contamination of molten aluminum, and extends service life by 30%.
2. Metal Accessories
   • Material: 304 stainless steel (for corrosion resistance in high-temperature workshops) and Q235B carbon steel (for structural support).
   • Key Parts: Clamping frames (to fix the dam liner, prevent displacement), sealing grooves (to install ceramic fiber seals), and guide rails (for lifting-type dams, ensuring smooth movement).
   • Anti-Rust Treatment: Electroplating + high-temperature resistant paint, ensuring no rusting for ≥2 years under workshop conditions.
3. Drive Device
   • Three types available to match customer production needs:
     • Manual Drive: Equipped with a handwheel and worm gear mechanism—simple structure, low cost, suitable for small-scale casting lines with low frequency of operation.
     • Pneumatic Drive: Adopts JINYI’s customized air cylinder (working pressure 0.4-0.6 MPa)—fast response (opening/closing time ≤5s), precise control, suitable for automated production lines.
     • Electric Drive: Uses a servo motor + ball screw mechanism—stepless speed regulation, position accuracy ±0.5mm, compatible with PLC control systems for intelligent flow management.

Application Scenarios

JINYI’s launder dam is exclusively designed to match its integrated aluminum liquid launder systems (500-3000mm lining length), mainly used for:

• Flow Control: Adjusting the flow rate of molten aluminum in the launder (0.2-1.0 m/s) to match downstream degassing/filtration equipment, ensuring stable purification efficiency.
• Molten Aluminum Blocking & Release: Temporarily blocking molten aluminum during equipment maintenance (e.g., replacing filter elements) or releasing it in batches to avoid overflow.
• Segmented Transportation: Dividing the launder into multiple sections to control molten aluminum distribution in multi-station casting lines (e.g., simultaneous casting of multiple aluminum foil coils).

It is particularly suitable for high-value-added aluminum casting scenarios such as computer hard drive aluminum casings, jet turbine engine fan blades, and food-grade canning aluminum—where precise molten aluminum control is critical to product quality.

Core Performance Advantages

1. Superior Material Durability

High-silicon/N17 material ensures strong resistance to molten aluminum erosion and thermal shock. When paired with JINYI’s BN coating, the dam liner’s service life reaches 30-90 days (varies by aluminum alloy type and operation frequency)—20% longer than industry average.

2. Zero Molten Aluminum Contamination

Both high-silicon and N17 materials contain no heavy metals (Pb, Cd, Hg) and do not release harmful gases at high temperatures (≤1300℃), complying with national standards GB/T 38437-2020 and ensuring molten aluminum purity.

3. Flexible & Precise Operation
   • Manual dams: Light handwheel operation (torque ≤15N·m), easy for on-site workers to use.
   • Pneumatic/electric dams: Support remote control and linkage with upstream/downstream equipment (e.g., automatically opening when degassing unit is ready), reducing manual intervention.
4. Seamless Compatibility

Standardized dimensions match JINYI’s full range of launder systems—no need to modify existing launder structures. Customized designs are available for non-standard launders (e.g., curved, trapezoidal) based on customer drawings.

2. Low Maintenance Cost

The detachable dam liner allows quick replacement (≤30 minutes per unit), avoiding long production downtime; metal accessories have a service life of ≥1 year, reducing frequent part replacement costs.

Technical Parameters

Operating Instructions

1. Installation Requirements

• Align the launder dam with the JINYI launder’s pre-installed guide rails, ensuring horizontal error ≤0.5mm (use a level to calibrate)—avoid uneven stress on the dam liner.
• Install ceramic fiber paper (provided by JINYI) in the sealing grooves around the dam, ensuring full contact with the launder inner wall—preventing molten aluminum leakage from gaps.
• For pneumatic/electric dams: Connect the air pipe/power cable to the designated interface, and test the opening/closing action 3-5 times to ensure smooth movement.

2. Pre-Use Inspection

• Check the dam liner for cracks, chips, or foreign matter—replace immediately if damaged.
• For manual dams: Verify that the handwheel rotates smoothly, with no jamming in the worm gear mechanism.
• For pneumatic dams: Check air pressure (0.4-0.6 MPa) and air pipe tightness—no air leakage allowed.
• For electric dams: Calibrate the servo motor’s limit positions (fully open/closed) to avoid overtravel damage.

3. Operation & Maintenance

• When blocking molten aluminum: Lower the dam slowly (speed ≤10mm/s) to avoid splashing; monitor the molten aluminum level upstream—do not exceed 80% of the launder height.
• When releasing molten aluminum: Raise the dam at a uniform speed (manual: 1-2 turns/s of handwheel; pneumatic/electric: 5-10mm/s) to control flow rate.
• Daily Maintenance: After shutdown, clean the dam liner surface with a wooden scraper (no metal tools) to remove residual slag; apply a thin layer of JINYI’s BN coating every 7 days to maintain non-stick performance.

4. Replacement of Dam Liner

• When the liner shows obvious erosion (wear depth ≥5mm) or cracks, stop using it immediately.
• Remove the metal clamping frames, take out the old liner, and install the new one—ensure it fits tightly in the frame without gaps.

Service Life & Warranty

After-Sales Service Commitment

• Spare Parts Supply: Dam liners, ceramic fiber seals, and drive components in stock—delivery within 2-3 working days.

Compatibility Note

JINYI’s launder dam is fully compatible with its integrated aluminum liquid launder systems (short/medium/long types) and can also be adapted to third-party launders—please provide the launder’s inner width, depth, and installation space when placing a customized order. Supporting effect pictures of BN coating application and on-site installation are available upon request.