Technology of horizontal continuous casting of copper and its alloys


Subject
Horizontal continuous caster with improved mould and cyclic with drawing device design.

Present situation
The horizontal continuous casting of metals and alloys is wide spreader in the practice of nonferrous metals production. The casters of copper and its alloys include as a rule graphite mouldes. The disadvantage is low durability of graphite walls. The main problem of horizontal mouldes, especially with water cooled copper walls, is temperature difference in their joint with conductor of liquid metal. Metal solidifies on conductor surface fast destructed under this attack. For satisfied casting surface quality maintenance the frequent casters halts with mould replacements are required. The existing casting withdrawing devices make available low frequency of motion cycles (withdrawing - pause, as rule, without negative motion) - up to 30...60 1/min, deficient for preventation of formation of surface defects obligated for condition.

Investigation description
The scheme of mould with copper active walls, boron nitride metal conductor was developed. The joint of refractory metal conductor with anti-corrosion steel sleeve favors elimination of metal sticking to conductor face, facilitates technological lubrication. The developed periodical withdrawing device presents differential mechanism making available composition of two components: · constant and sinusoidal ones and, in sum, regime of periodical motion of casting with high frequency and period of negative motion.

Advantages
The investigation makes possible maintenance of process stability and satisfied surface quality (without condition) in package with mould durability increase.

Application field
Continuous casting of non-ferrous metals and alloys.

Approbation
Modeling, laboratory tests in experimental plant.

Actions for commercial use:
Manufacturing, industrial testing with authors participation and supervision.

Patent status:
Patent 1781921 (USSR); application for patent of Russia (No 4812736).

Potential customer
    Potential customers are non-ferrous casting producers.

Type of transaction: experimental research funding, licensing (sale).


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