Invent the letter of patent           Characteristic of Ni-Co alloy layer Ni-Co alloy It is most economical and most practical plating one layer of materials at present to plate layer It has a history of more than 50 years that metallurgy casts technology in succession , even cast the operating mode characteristic of the crystallization device and require the top of the crystallization device copper (50mm- 300mm From Top) have extremely good heat conduction performance (this select the basic reason of the alloy of copper for use ), while don't take the copper element to the steel billet surface , so as not to influence the surface quality of the steel billet; Under this kind of prerequisite , still require the underpart (350mm- 900mm or 450mm- 1200mm ) of the crystallization device copper to have excellent high-temperature wearability . In order to meet the requirement of the crystallization device actual operating mode characteristic, people are on the crystallization device copper, plate the floor in development of different types. The kind of plating layer grows from initial plating Cr (1965 ) to and plates Ni (1970 ), develop into and plate Ni first again, plate and then Cr (1975 ) or plate Ni first, plate Ni-Fe (1980 ) and then and single Ni-Fe subsequent plate layer. Develop different including cobalt quantity Ni-Co alloy layer and supersonic to gush out the coating (TC series product ) to now 1995, but because of many kinds of reasons , gush out the coating and has not got extensive use supersonically, it means Ni-Co (someone calls that Co-Ni too ) plates layer and remains most economical and most practical plating one layer of materials at present.   "HengRen" Ni-Co plate layer cast , produce adaptability plating layer most strong in succession 　　 Different crafts , the products produced have different characteristics. Our "HengRen" Ni-Co plates layer, on the basis of introducing beautiful (Millcraft SMS Services ) United Technologies of Germany, according to the actual conditions of the users of our country, reform and innovate and form have trough person who soak and group box double electroplating craft of characteristic further. The craft not merely can get with thin top and thick bottom to plate layer , can also get with soft top and hard bottom to plate layer at the same time, this can't be realized in single trough soaking type craft. First of all , have thin to make thick device of crystallization met copper actual operating mode basic need of characteristic - -The upper heat conductivity is good, the underpart wearability is strong; Such as the high-temperature environment, the underpart will not be reduced while plating one layer of hardness, so is more wear-resisting and more durable; Material of the hot coefficient of expansion and copper mother is most close (14.5 and 16.7); The performance of heat conduction and nickel are plated layer identically ; Easy to use, do not need changing and casting the craft parameter in succession , is suitable for any casting machine to use, the result of use is more prominent in casting the plane high-efficiently. "HengRen" Ni-Co plate layer low stress , high purity , stability better to plate layer Nickel any base electroplate system (plate liquid make up ) have a difference of low stress and high stress, especially the functionality is plated layer (can meet the plating layer of a certain particular function requirement , plating layer if on the crystallization device copper ), very sensitive to one floor of stresses of plating. To plate layer easy to produce full of cracks , will result in peeling off when being serious high stress. Electroplate system produce functionality plate layer , must add stress reduce pharmaceutical in high stress; Electroplate at Ni-Fe system,because two price iron ion the unstable,is it easy to oxidize as into three price iron ion very (three price iron ion to plating layer harmful to), so should add stabilizer of two price irons ion. These organic additive is being consumed and decomposing in electroplate and producing constantly, the organic impurity enabled and plated among the liquid is higher and higher, it is very unstable to result in plating one layer of quality. And we " permanent and tough " Ni-Co plate layer electroplate production among the system in low stress , need , add stress reduce pharmaceutical; Cobalt ion is very stable at the same time, needn't add any stabilizer either. So " permanent and tough " Ni-Co plate layers of pure degree high , quality steady and reliable , can improve production efficiency of the casting machine even notably. "HengRen" Ni-Co plate layer user reduce production cost effective choice most at present "HengRen" Ni-Co plates layer because its internal stress is low, pure degree is high, so toughness is good, use it, can prevent , curve monthly face persons of heat of material , mother of copper , split to the maximum extent, guarantee copper produce vertical crackle or vertical crackle most shallow and (hot to split , relate to internal stress of copper mother material even ). Help to protect the copper mother material, lengthen and repair and plate the number of times , reduce the production cost. Meanwhile, Ni-Co plate layer under drawing high-temperature state that base use , surface hardness does not reduce, so it is high-temperature the getting finer in wearability in under state,can actual life to raise copper effectively, thus improve the production efficiency of the casting machine , reduce the frequency of overhauling , reduce by one ton of steel expenses. Under equal homework terms, Ni-Co plate layer most durable , draw base life-span plating layer longest "HengRen" Ni-Co plate layer pure to plate high , quality is steady , the hardness does not change under the high-temperature state, more durable. And may protect the copper mother material , reach to scrap from new product and can be repaired for 8- 1 times (in a situation that mother material has no crackle), even more, reduce the purchasing amount of the new product , reduce the production cost. HengRen electroplate craft realize with machining and installation reorganizing and outfitting perfect to combine Or make up and electroplate the case together with the cooling water tank of the back with wide copper noumenonns, electroplate at putting in and electroplating the workingbench station. The person on a public errand when can dispel machine tooling and assemble in this kind of electroplating craft accumulates , the precision can reach ± 0.05mm , improve the whole assembly precision of the crystallization device .