Kev siv ntawm Fusible Alloys

Molten fusible alloys tuaj yeem siv los ua cov dej txias vim tias lawv ruaj khov hauv cov cua sov thiab muaj thermal conductivity ntau dua li lwm cov coolants. Tshwj xeeb tshaj yog alloys ua los ntawm cov hlau uas muaj thermal conductivity xws li indium los yog sodium. Cov hlau uas tsis tshua muaj neutron cross-section yog siv los ua kom txias nuclear reactors.

Xws li cov alloys yog siv rau hauv kev tsim cov fusible plugs uas tau muab tso rau hauv lub ru tsev ntawm chav boilers raws li kev tiv thaiv kev ntsuas thaum cov dej tso cai tsawg dhau. Thaum qhov no tshwm sim, lub ntsaws, uas tsis tau them los ntawm dej, yog rhuab mus rau melting kub thiab tso cai rau cov ntsiab lus ntawm boiler kom khiav mus rau hauv lub cub tawg. Nyob rau hauv ib tug sprinkler, lub qhov ncauj ntawm txhua lub sprinkler yog kaw nrog ib tug plug ntawm fusible hlau fastened mus rau ib tug plug uas melts thiab tso dej thaum kub nce siab tshaj qhov predetermined txwv vim hluav taws kub hauv chav tsev.

Bismuth in cooling expands by about 3.3% by volume. Alloys with at least half the bismuth content also show this behavior. This can be used for the installation of small parts, eg for machining, as they will be held securely.