Anulus ferreus

Mingda officia tornationis praecisionis ex recentissimis machinis tornatoriis CNC offert.
Cum plus decem annorum experientia in officiis machinationis accuratae ad usum singularum personarum periti, operam damus ut producta altae qualitatis pretiis aemulis praebeamus.
Praebere possumus partes machinationis CNC accuratae, partes tornationis CNC, partes fresationis CNC, trituram superficiei, sculpturam CNC, et cetera.
Partes ab 1mm ad 300mm ex aluminio, chalybe mixto, chalybe inoxidabili, aere et plastica (nylon, PMMA, teflon etc.) produci possunt.
Et etiam secundariam elaborationem et sub-congregationem opera pro te facere possumus cum prototypum CNC vel productio perfecta est.
Plus quam decem annorum experientia in designandis et producendis omnibus generibus partium machinationis accuratae.
Machinatio CNC accurata partium metallicarum pro clientibus transmarinis et domesticis.
In fabricandis productis et componentibus cum tolerantiis arctis et formis intricatis specializati.
Fusiones arenae ferri ductilis fabricatae ab fabricatore originali (OEM), fusiones spumae perditae, fusiones in vacuo, et cetera; ars formationis secundum tolerantiam actualem et quantitatem postulatam eligitur. Pleraque fusiones nostrae productae ad valvas, hydrantes, antlias, autocineta oneraria, ferrivias et tramina, et cetera adhibentur.
Cast iron is an alloy consisting mainly of iron, carbon, and silicon.
In these alloys, the carbon content exceeds the amount that can be retained in austenite solid solution at eutectic temperature.
Cast iron is an iron-carbon alloy with a carbon content greater than 2.11% (generally 2.5 ~ 4%).It is a multi-element alloy with iron, carbon and silicon as the main component elements and contains more manganese, sulfur, phosphorus and other impurities than carbon steel.Sometimes in order to improve the mechanical properties of cast iron or physical, chemical properties, but also add a certain amount of alloy elements, alloy cast iron.
As early as the sixth century BC age period, China has begun to use cast iron, than European countries nearly two thousand years earlier.Cast iron is still one of the most important materials in industrial production.
oneAccording to the form of carbon present in cast iron, cast iron can be divided into
1.White cast iron except for a few soluble in ferrite, the rest of the carbon in the form of cementite exists in cast iron, its fracture is silver-white, so called white cast iron.White cast iron is mainly used as raw material for steelmaking and blank for producing malleable cast iron.
2.Gray cast iron carbon all or most of the flake graphite exists in the cast iron, its fracture is dark gray, so called gray cast iron.
3.Part of the carbon of hemp cast iron exists in the form of graphite, which is similar to gray cast iron.The other part is in the form of free cementite similar to white cast iron.The black and white pitting in the fracture, so called hemp cast iron.This type of cast iron also has greater hardness and brittleness, so it is rarely used in the industry.
twoAccording to the different graphite morphology in cast iron, cast iron can be divided into
1.The graphite in gray cast iron is flake.
2.The graphite in malleable cast iron is flocculent.It is obtained from certain white cast iron after annealing at high temperature for a long time.Its mechanical properties (especially toughness and plasticity) are higher than gray cast iron, so it is commonly called malleable cast iron.
3.The graphite in nodular cast iron is spherical.It is obtained by spheroidizing treatment before pouring molten iron.This kind of cast iron not only has higher mechanical properties than gray cast iron and malleable cast iron, but also has a simpler production process than malleable cast iron. Moreover, its mechanical properties can be further improved through heat treatment, so it is increasingly widely used in production.

introductio societatis:
Societas Mercatoria Internationalis Hebei Mingda est societas mercatoria quae in fusionibus, fabricatis et partibus machinarum specializatur.
Nostra producta omne genus partium crudarum fusarum ex ferro ductili, ferro griseo, aere, chalybe inoxidabili et aluminio fabricandarum comprehendunt.
Fusiones machinatae et partes fabricatae. Ad has partes secundum delineationes emptorum fabricandas,
Artes et apparatus productionis relative idoneos habemus, ut arenam resinam, formam arenae, capsas nuclei calidi, ceram perditam, spumam perditam, et cetera.
Praesertim pro corporibus hydrantium et corporibus valvarum, amplam experientiam in his productis per sedecim annos productionis actualis collegimus.
Nunc de productis nostris, superficie bona et materia optima praeditis, gloriamur. Nihilominus, omni ope nitimur ut clientibus nostris meliorem qualitatem praebeamus.
fusiones per artes productionis emendandas et qualitatis moderationem diligentiorem.
Responsionem tuam benignam quam primum exspecto!