Gabatarwa ga pretreatment na nickel kumfa

Kumfa nickelwani abu ne da ake amfani da shi don kera na'urorin batir, kuma tsarin samar da kayan kumfa na nickel na yau da kullun shine kamar haka: soso na polyurethane ana fara gudanar da shi, sannan a sanya electrodeposited, kuma a ƙarshe ya zama ruwan dare.

A cikin matakan da ke sama, maganin gudanarwa gabaɗaya ya haɗa dasinadarai plating, shafi conductive m, da injin platingta hanyoyi guda uku; electrodeposition na iya zama sulfate ko sulfamate nickel plating; tsarin da ake da shi ana fara kammala shi ta hanyar kona soso na polyurethane, sannan a rage da kuma juyar da soso a karkashin wani yanayi na rage hydrogen a matakai biyu, inda iskan da ke kona soso na polyurethane ya zama oxidized kuma ya lalata shi a zazzabi na 300 zuwa 700. °C. Ana kammala aikin ƙaddamarwa ta hanyar iska mai ƙonewa daga soso na polyurethane, sa'an nan kuma ragewa da kuma lalata soso na polyurethane a cikin yanayin rage hydrogen; Ana yin maganin ragewa a ƙarƙashin yanayin raguwar hydrogen a zafin jiki na 800 zuwa 1000 ° C na minti 30-60, kuma yanayin raguwa shine iskar gas na ammonia, kuma adadin iskar gas da aka cinye shine 0.8-1.2 L/g (kowane gram). na nickel yana buƙatar 0.8-1.2 lita na iskar ammonia da za a cinye.

Ingantacciyar hanyar yinnickel kumfa, Mataki na wanda ya ƙunshi conductivization, electrodeposition da sintering na wani polyurethane soso, halin da cewa sintering mataki ne zuwa pyrolyze da sinter da polyurethane kumfa kai tsaye a cikin wani rage yanayi bayan electrodeposition, inda da rage yanayi ne ammonia bazuwar gas, da rage yawan zafin jiki. shine 400-1000 ° C., lokacin ragewa shine mintuna 30-60, da adadin yawan amfani da iskar gas. 0.4-0.8 l/g. (Kowane gram na nickel yana buƙatar cinye lita 0.4-0.8 na iskar gas na bazuwar ammonia.) Gas ɗin bazuwar ammoniya shine cakuda nitrogen da hydrogen, kuma adadin ƙarar nitrogen da hydrogen shine 1: 3.

A dauki inji shi ne cewa bayan electrodeposition nanickel kumfadauke da polyurethane soso kai tsaye a cikin hydrogen rage yanayi pyrolysis sintering, inda carbon da hydrogen mataki, samar da CH4, C2H6 da sauran gaseous hydrocarbons, na sama gasification tsari ya isa ya cire graphite C a cikin porous jiki tsabtace.

Yana warware yadda ya kamata data kasance shortcomings a data kasance fasaha na nickel kumfa a cikin sintering tsari, kamar sauki crack, nakasawa arching, low yawan amfanin ƙasa, high makamashi amfani, nickel kumfa inji Properties ba barga.