Single Girder Cast Crane, Efficient & Cost-Effective Foundry Crane for Light to Medium Loads

PRODUCT OVERVIEW

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Important Safety Notice for Foundries
During routine safety checks, we’ve found many small foundries using standard single girder cranes to lift molten metal—this is unsafe. Special metallurgical cranes are required. Here’s how they differ:

Capacity Limits: Metallurgical cranes with electric hoists must have ≤10t capacity and ≥M6 grade.
High-Temp Ropes: Must use heat-resistant wire ropes (e.g., asbestos/metal core).
No Cast-Iron Pulleys: Forbidden for molten metal handling.
Fail-Safe Motors: Require reverse-contact fault protection to prevent load drops if power fails.
Remote Control: Operators must use non-follow (remote) controls away from heat, with clear visibility and safe access.
Dual Brakes:

If capacity >5t: Needs main brake + safety brake on the hoist’s low-speed end.
If ≤5t: Safety brake recommended, or crane must be rated for 1.5x the actual load.

Dual Limit Switches: Must have two upper limit switches (e.g., rope-guided + weight-triggered). For heights >20m, add a lower limit switch.
Heat Shields: High-radiation areas (e.g., girder undersides) require (heat shields).

Always verify crane types during inspections to prevent accidents.

Explosion-Proof Crane Basics

Classes:

Ⅰ: For coal mine gas.
Ⅱ: Other explosive gases (ⅡA=propane, ⅡB=ethylene, ⅡC=hydrogen).
Ⅲ: Explosive dust (ⅢA=flammable fibers, ⅢB=non-conductive dust, ⅢC=conductive dust).
Max speed: 16 m/min (ⅡC/ⅢC), 25 m/min (others). Hoisting speed ≤8 m/min.

Requirements:

Materials: Use(killed steel) for key parts. Brass/stainless nameplates (≥1mm thick).
Parts: No open gears. Dual brakes + load limiter. Polyurethane/rubber buffers (surface resistance ≤10Ω).
Electrical: Flameproof wiring per GB 3836.1. Cable-fed power with grounded cores.

Rule: Never compromise on specs—safety first!

Single Girder Cast Crane – Benefits & Features

Built for Tough Conditions
The Single Girder Cast Crane is made for heavy industrial work, especially in steel mills, foundries, and molten metal handling. Its strong build and safety features keep it working well in extreme heat and harsh environments.

Main Benefits
✔ Safety First – Has backup drive systems, safety hoists, and fail-safe parts to protect workers and equipment.
✔ Handles High Heat – Works in temperatures up to 65°C/149°F (or higher with cooling).
✔ Less Downtime – Tough parts and heat-protected electrical systems mean longer life with fewer repairs.
✔ Adjustable Speeds – Uses variable frequency drives (1:10 speed ratio) for smooth lifting and moving, customized to your needs.
✔ Safe Molten Metal Handling – Comes with a special laminated ladle hook and extra trolley for lifting and tipping hot ladles safely.

Key Features

CD/MD Electric Hoist – Runs on I-beam tracks for precise heavy lifting.
Heat & Dust Protection – Electrical systems are insulated and cooled for dusty, hot areas.
Backup Systems – Two trolleys (main + auxiliary) keep molten metal moving without stopping.
Extra-Strong Build – Some models use a 4-beam design for better load stability.

Best for Steel & Foundries
This crane is ideal for:
🔥 Lifting hot ladles
🔥 Moving and pouring molten metal
🔥 Steel casting and continuous casting

Why Pick Our Crane?
✅ Works in extreme heat, dust, and heavy loads with little wear.
✅ Meets global safety standards.
✅ Custom speeds, capacities, and controls.

APPLICATION SCENARIO

Explosion-Proof Crane Working Conditions

1. Environment Requirements

(1) Indoor Use (outdoor use needs agreement).

Temperature: -20°C to 40°C.
Air Pressure: 0.08–0.11 MPa.

(2) Good Ventilation Needed – Must have proper airflow.

(3) Explosive Gas Areas (GB 3836.14-2014):

Zone 1: Explosive gas may sometimes be present.
Zone 2: Explosive gas rarely appears (if so, only briefly).

(4) Explosive Dust Areas (GB 12476.1-2013):

Zone 21: Dust clouds may sometimes form (e.g., near open containers).
Zone 22: Dust clouds rarely form (if so, only briefly).

2. Safety Rules for Workers

✔ Know Explosion Risks – Operators must understand crane safety.
✔ Smooth Starts & Stops – Avoid wheel slipping or sparks.
✔ Lubricate Steel Ropes – Reduces friction with pulleys and drums.

Key Notes for Safe Use

No Sparks – Avoid rough movements that cause friction.
Check Equipment – Ensure brakes, ropes, and electrical parts work well.
Follow Standards – Always meet GB 3836 and GB 12476 rules.

LDY Single Girder Overhead Metallurgy Crane – Applications

The LDY Single Girder Overhead Metallurgy Crane is a heavy-duty crane for high-heat industrial work. It is stronger and safer than standard cranes.

1. Steel Mills & Foundries

✔ Molten Metal Handling – Safely lifts and moves hot steel, iron, and other metals.
✔ Casting & Pouring – Helps in foundry work with precise lifting and tilting.
✔ Continuous Casting Lines – Keeps steel production running smoothly.

2. Warehouses & Material Stockyards

✔ Heavy Load Transport – Moves raw materials, ingots, and finished metal products.
✔ Workshop Logistics – Handles large coils, molds, and heavy parts in factories.

3. High-Temperature Work Areas

✔ Heat & Dust Resistant – Works well near furnaces and kilns.
✔ Corrosion Protection – Good for chemical plants and humid places.

4. Custom Industrial Uses

✔ Special Attachments – Can use hooks, grabs, or magnets for different jobs.
✔ Smart Factory Use – Works with automated Industry 4.0 systems.

Why Choose the LDY Metallurgy Crane?

✅ Extra Safety – Stronger build for molten metal work.
✅ Wider Use – Works in warehouses, foundries, and outdoor yards.
✅ Longer Life – Handles heat, dust, and heavy loads.