METALLURGY OVERHEAD CRANE

INTRODUCTION

A metallurgical overhead crane is specially designed for metallurgy and metal smelting plants. It travels along the rail track of the factory building, and the winch hoist does cross traveling on the crane girders, usually lifting steel products or molten metals with its hooks. It can be also a single girder overhead crane with a metallurgy heat resistance hoist.

 

Metallurgical cranes are usually working in the temperature of -10°C to +50°C, and the relative humidity <50° at a temperature of 40°C. The radiation heat of the molten metal lifted by forging hooks or laminated hooks does not exceed 300°C. For high frequency and heavy load lifting, the working duty can reach A7 and A8.

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APPLICATION

Metallurgical cranes are mainly used for metal smelting, rolling, and thermal processing. It is fitted with different spreaders such as hook, clamp, grab, magnetic beam, round magnetic lifting disc, etc. for different tasks such as open-hearth feeding, ground feeding, socking pit handling, bin handling, ingot stripping, mold lifting, cover handling, clamping, slab turning, forging, heating furnace loading and reclaiming, scrap grabbing, steel pipe handling, etc. See a slab and billet handling crane Model YB and more overhead crane applications.

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WORKING CONDITIONS

1. The standard power supply of the crane is 3 Phases AC, 50 Hz 380V. No-standard power is also available. The upper limit of allowable voltage fluctuations on motors and electrical appliances is +10% of the rated voltage, and the lower limit (at peak current) is -15% of the rated voltage. 
2. The altitude of the crane installation site should not exceed 2000m (when it exceeds 1000m, the motor capacity should be checked according to the relevant regulations).
3. The working environment temperature of the crane is generally -10~+50℃. The relative humidity does not exceed 50% at a temperature of +40℃.
4. The crane is forbidden to use at the site with flammable, explosive, and corrosive gases.

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