Charge must be made before the following inspection and verification work, which is the basis of smelting go on smoothly.1) according to the charge sheet and checking raw materials, including charging type, weight, composition, quality and compliance requirements, sign-out allow charging.2) inspect the smelting equipment parts for trouble-free, normal operation, after confirming the normal smelting is allowed.3) inspection and maintenance of crucibles, clear slag, mended the broken parts, necessary to bake before using the patch.4) length and main operator should be familiar with the steel smelting technology and operation, ensure the smelting process to implement.After completing the preparations above, you can charge.