... .4.3.2.The mould use 40Cr process by hardening and tempering,finalize the design,Nitriding,hard chrome ... GFAF77-Y1.5-4P-72.5-M5) which drive by small pitch chain transmission Chain:( 42/48-52.5N ... GUOMAO” (RF77-Y3-4P-33.263-M1)reducer, drive by chain(21/27-19.05);4.6.3. using ... machine, three rollers ,drawing speed are all controlled by Schneider inverter speed controller4.8.2.temperature control meter ...