Automatic pet strap threading and strapping machine

 

 

 

Specification for Automatic PET Strap Threading and Strapping Machine

General Description

An automatic PET strap threading and strapping machine is designed to feed, tension, seal, and cut PET strapping around packages or pallets without manual intervention, improving productivity for medium to heavy-duty applications. It features an integrated threading mechanism (e.g., chain lance or probe) to pass the strap under loads, making it ideal for your steel coil or pallet securing needs.

Material Compatibility

Technical Specifications

Machine Design

Performance

Safety Features

Maintenance

Environmental Considerations

Packaging and Installation

Applications

 

 

 

 

 

 

Aluminum Round Bar Making Equipment(for 7 inch)

1. Melting Furnace

  • Purpose: Melts aluminum ingots or scrap into molten aluminum for casting.
  • Type:
    • Induction Furnace: Uses electromagnetic induction for efficient, uniform melting. Capacity: 500–2000 kg, suitable for medium-scale production.
    • Gas-Fired Reverberatory Furnace: Common in larger operations, with capacities up to 50 tons.
  • Specifications:
    • Temperature: 660–750°C (melting point of aluminum is 660°C).
    • Power: 150–500 kW for induction furnaces.
  • Relevance: Ensures a consistent molten aluminum supply for casting 7-inch round bars.

2. Casting Equipment (Hot-Top Casting System)

  • Purpose: Casts molten aluminum into round bar shapes (e.g., 7-inch diameter).
  • Components (as used in Foshan, e.g., by Nanhai Boqiang Machinery):
    • Casting Platform:
      • Upper Platform: Steel structure with refractory lining, includes a distribution launder to guide molten aluminum.
      • Crystallizer (Mold): Forms the 7-inch diameter bar; made of copper or graphite for high thermal conductivity and durability.
      • Dummy Bar (Ingot Puller): Supports and pulls the solidifying aluminum bar downward.
    • Cooling System: Enclosed water chamber with cooling water (flow rate: 50–100 L/min) to solidify the aluminum bar rapidly, minimizing defects like porosity.
    • Accessories: Graphite rings, transition plates, and distribution launders ensure uniform aluminum flow.
  • Specifications:
    • Mold Diameter: 177.8 mm (7 inches).
    • Casting Speed: 50–150 mm/min, adjustable based on alloy and diameter.
    • Output: Can produce 10–50 bars per cast, depending on platform size.
  • Relevance: Hot-top casting, as offered by companies in Foshan, is ideal for producing high-quality 7-inch aluminum round bars with minimal internal defects.

3. Extrusion Press (Alternative Forming Method)

  • Purpose: Forms aluminum round bars by extruding heated billets through a die, often used for smaller diameters or when casting isn’t preferred.
  • Components:
    • Billet Heater: Heats aluminum billets to 450–500°C.
    • Extrusion Press: 1000–2500 ton capacity, forces the billet through a 7-inch round die.
    • Run-Out Table: Cools and straightens the extruded bar.
  • Specifications:
    • Extrusion Ratio: 10:1 to 40:1, depending on die design.
    • Speed: 5–20 m/min.
  • Relevance: Extrusion is widely used for 6061-T6 aluminum round bars (as noted in prior market data), offering tight tolerances and smooth surfaces. However, for 7-inch bars, casting is more common due to size constraints in extrusion.

4. Cutting and Finishing Equipment

  • Purpose: Cuts the cast or extruded bars to desired lengths (e.g., 2.6 m to match your steel pipe lengths) and improves surface quality.
  • Components:
    • Circular Saw: Cuts bars to length with precision (±1 mm tolerance).
    • Surface Treatment:
      • Brushing Machine: Removes surface oxides or defects.
      • Anodizing Line (Optional): Adds a 10–25 µm oxide layer for corrosion resistance, critical for humid environments like Ecuador (70–90% humidity in Guayaquil).
  • Specifications:
    • Saw Blade: Carbide-tipped, 500–800 mm diameter.
    • Anodizing Tank: 5–10 m long, uses sulfuric acid electrolyte.
  • Relevance: Ensures the 7-inch aluminum round bars meet your length and surface quality requirements for export or equipment manufacturing.

5. Quality Control Equipment

  • Purpose: Ensures the round bars meet mechanical and dimensional standards.
  • Components:
    • Ultrasonic Tester: Detects internal defects like porosity or inclusions.
    • Hardness Tester: Measures Brinell hardness (e.g., 95 HB for 6061-T6).
    • Spectrometer: Verifies alloy composition (e.g., 6061: 0.8–1.2% Mg, 0.4–0.8% Si).
  • Relevance: Critical for ensuring the bars’ tensile strength (310 MPa for 6061-T6) and suitability for your applications (e.g., machining into equipment parts).

6. Auxiliary Equipment

  • Degassing Unit: Removes hydrogen gas from molten aluminum to reduce porosity in the final bar.
  • Filtration System: Uses ceramic foam filters to remove impurities, improving bar quality.
  • Cooling Water System: Recirculates water (200–500 L/min) to maintain mold temperature during casting.

Environmental and Operational Considerations

  • Corrosion Resistance: Equipment should have protective coatings (e.g., epoxy or galvanized) for durability in humid environments like Ecuador.
  • Power Supply: 380V/50Hz, 3-phase, common in China; adjustable to 120/240V, 60Hz for Ecuador.
  • Safety Features: Emergency stops, protective guards, and temperature sensors to prevent overheating.

 

Practical Implications for Your Use Case

  • Application: The 7-inch aluminum round bars can be used to machine components for your steel strapping production line (e.g., rollers for the straightening machine or supports for the uncoiler/pallet mover [Previous Artifacts]).
  • Export: The equipment ensures high-quality bars for export to Ecuador or Algeria, suitable for humid conditions when anodized.
  • Integration: Can be paired with your existing production setup in Tianjin, enhancing your ability to produce or utilize aluminum components alongside steel strapping and pipes.

If you need detailed schematics, a supplier comparison, or integration plans, I can assist further!

 

 

 

 

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