Tus qauv khoom l. Hlau enameled 1.1 tus qauv khoom ntawm hlau enameled puag ncig: gb6109-90 series tus qauv; zxd/j700-16-2001 tus qauv tswj kev lag luam sab hauv 1.2 tus qauv khoom ntawm hlau enamelled tiaj tus: gb/t7095-1995 series Tus qauv rau cov txheej txheem sim ntawm hlau enamelled puag ncig thiab tiaj tus: gb/t4074-1...
Cov hlau enameled yog ib hom hlau winding tseem ceeb, uas muaj ob ntu: tus neeg xyuas pib thiab txheej insulating. Tom qab annealing thiab softening, cov hlau liab qab yog pleev xim thiab ci rau ntau zaus. Txawm li cas los xij, nws tsis yooj yim los tsim cov khoom uas ua tau raws li cov qauv thiab cov neeg siv khoom xav tau. Nws yog...
Tau kawg, nickel yog cov hlau tseem ceeb uas tau khawb hauv Sudbury thiab los ntawm ob lub tuam txhab loj hauv nroog, Vale thiab Glencore. Tsis tas li ntawd, tom qab tus nqi siab dua yog kev ncua sijhawm rau kev nthuav dav ntawm lub peev xwm tsim khoom hauv Indonesia txog rau xyoo tom ntej. "Tom qab cov khoom seem ntau dhau thaum ntxov xyoo no, tej zaum yuav muaj kev nqaim hauv ...