Mechanica parce partes griseo-cast ferrum partes
Grey mittetur ferrum habet bonum mittentem perficientur, bonum vibration damping, bonum gerunt resistentia, bonum secans perficientur et humilis noth sensitivity .
Proprietatibus griseo mittetur ferrum
① Effects of the chemical composition. Production mainly controls the quality fraction of carbon and silicon. The carbon and silicon quality fraction is too low, cast iron is easy to appear white mouth tissue, mechanical performance and casting performance are very low; Cumque ipsum et Silicon qualis fraction est alta, in graphite sheet est magna et crassitudine, et etiam graphite fluens super superficiem ferrum aquae, reducendo ad perficientur et qualis est in II {II} Circe, et in II% Casus est, in II% Circumda, in II% Circumda est, in II% Casus ferrum, in II% Circumda est in II% Circumda, I {{}} 0% ~ 2.0% si; 0.5% ~ 1.4% MN.
② The influence of the cooling speed: under certain casting process conditions, the cooling speed of the casting has a great impact on the℃of graphitization. With the different wall thickness of the casting, the cooling speed slows down, carbon atoms have sufficient diffusion time, it is conducive to the full graphitization process, room temperature tissue is easy to form gray iron tissue; Sed tenuis-muros in refrigerationem processus est ieiunium, facile ad formare album ferrum TEXTUS {{II}}
Et calor curatio de grey mittetur ferrum non solum mutare organizationem matricis, non figura graphite, ita est impossibile est significantly amplio mechanica proprietatibus et griseo et albo {{{I}}, amplio griseo, et gerunt, {{I}}
Eliminate Internum accentus Annealing
To eliminate the casting stress caused by the uneven cooling during the solidification process, and to prevent the deformation and crack of the casting. The process is to heat the casting to 500~600℃, insulation for a period of time with the furnace to 150~200℃below the air cooling, sometimes the casting in the natural environment for a long time, so that the stress in the casting is relaxed, this method is called "natural aging", large gray cast Ferrum potest capere hoc modum ad eliminate mittentes accentus [IV] {{VI}}
Graphiting Annealing
Ut eliminate album ore TEXTUS, reducere duritiam, amplio cutting perficientur {. modum est ad calefacere ad CM-V horas, et tardus refrigerationem in aere, ut CD, et tardus corpus in calidum, et tardus, et corpus in calidum, et tardus corpus in calidum, ut et tardus corpus in calidum, ut et in calidum, ut aeris, {VII}
DECIPIO
Improve the surface hardness and extend the service life. For example, the working surface of the guide surface of the machine tool and the working surface of the inner wall of the cylinder sleeve of the internal combustion engine is necessary to have high hardness and wear resistance, and the method of surface quenching can be used. The common methods are high (medium) frequency induction heating surface quenching and contact resistance heating surface quenching
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