Kwanaki da suka wuce, ina hira da wani abokina wanda ke aiki a harkokin kasuwancin ƙasashen waje, kuma ya damu da odar fitar da foda mai launin ruwan kasa mai hade da alumina: "Abokin ciniki yana neman grit na F36 bisa ga ƙa'idar Amurka, amma ƙa'idar masana'antarmu ta ƙayyade 'foda mai matsakaici.' Shin waɗannan biyun iri ɗaya ne? Nawa bambanci ake yarda da shi?" Wannan tambayar ta nuna ruɗani da aka saba gani a masana'antar - ƙa'idodin donalumina mai launin ruwan kasa Ƙananan foda sun bambanta sosai tsakanin kasuwannin cikin gida da na ƙasashen waje. Na shafe sama da shekaru goma ina aiki a wannan masana'antar, daga ma'aikacin fasaha zuwa manajan inganci, kuma na kula da tarin takardu na yau da kullun kusan rabin tsayina. A yau, bari mu tattauna abin da waɗannan ƙa'idodin cikin gida da na ƙasashen waje suka ce da kuma yadda ya kamata a yi amfani da su a aikace.
I. Ma'aunin Gida: Juyin Halitta daga "Faɗaɗa" zuwa "Mai Kyau"
Tsarin da aka saba amfani da shi a cikin gida na ƙananan foda na alumina mai launin ruwan kasa ya ci gaba sosai a tsawon lokaci. A farkon shekarun, ya kasance "mai faɗi."
1. Tsarin Ƙasa na GB/T 2478: Tsohon Ma'aunin Ma'auni
Ana ɗaukar "Abrasives na yau da kullun - Alumina mai launin ruwan kasa" na GB/T 2478-2021 a matsayin mafi mahimmancin ma'aunin gida. Ya fi sarrafa "asalin" alumina mai launin ruwan kasa - abubuwan da ke cikin sinadarai da halayensa na zahiri. Misali, ya ƙayyade cewa abun ciki na Al₂O₃ bai kamata ya zama ƙasa da 94.5% ba, Na₂O₃ bai kamata ya fi 0.45% ba, kuma akwai iyakoki bayyanannu kan abubuwan da ke cikin kayan maganadisu. Duk da haka, matsalar ita ce wannan ma'aunin gabaɗaya ne game da ɓangaren "micro-foda". Ya raba girman barbashi zuwa manyan rukuni huɗu: "hatsi mai kauri," "hatsi mai matsakaici," "hatsi mai kyau," da "micro-foda," kawai yana bayyana micro-foda a matsayin "girman barbashi mafi kyau fiye da raga 240." Amma a kasuwa ta ainihi, ana ɗaukar F240 (kimanin microns 62) zuwa sama a matsayin masu lalata ƙashi, yayin da ainihin ƙananan foda-foda suna daga F280 (kimanin microns 53) zuwa ƙasa, zuwa F1200 (kimanin microns 12) ko ma mafi kyau. Saboda haka, masu bincike a masana'antu gabaɗaya sun fahimci cewa ma'aunin ƙasa ya kafa "tushe," kuma ana buƙatar ƙarin cikakkun bayanai don ingantaccen samarwa.
2. Ma'aunin Masana'antu: Kowannensu da Nasa Tsarin
Saboda ma'aunin ƙasa bai cika cikakkun bayanai ba, masana'antu daban-daban sun ƙirƙiro nasu ma'auni. Ma'aunin masana'antar injina (JB/T) ya ƙayyade cikakkun bayanai game dafoda mai launin ruwan kasa da aka haɗa da aluminaAna amfani da shi wajen gogewa. Misali, jerin JB/T 7984 yana raba micropowder zuwa fiye da maki goma daga F230 zuwa F1200, tare da kowane mataki yana ƙayyade kewayon rarrabawar girman barbashi. Misali, F400 yana buƙatar cewa barbashi mafi kauri kada su wuce micrometers 42.0, manyan barbashi suna tarawa tsakanin micrometers 17.0-25.0, kuma akwai iyaka ta sama ga ƙananan barbashi. Wannan ma'auni shine mafi yawan amfani a masana'antar gogewa.
Ma'aunin masana'antar ƙarfe (YB/T) ya fi mai da hankali kan ƙaramin foda mai launin ruwan kasa da aka haɗa da alumina da ake amfani da shi a cikin kayan da ba su da ƙarfi. Bai dogara ne akan takamaiman adadin girman barbashi ba, amma yana mai da hankali kan alamomi kamar "yawan yawa" da "rashin ƙonewa," waɗanda ke tasiri sosai ga aikin kayan da ba su da ƙarfi yayin gini. Masu kera kayan da ba su da ƙarfi gabaɗaya suna bin wannan ƙa'ida.
Ma'aunin masana'antar kayan gini (JC/T) yana da buƙatu na musamman ga ƙaramin foda mai launin ruwan kasa da aka haɗa da alumina da ake amfani da shi a cikin gilashin yumbu. Misali, ana sarrafa farin da abubuwan da ke cikinsa sosai, saboda ƙazanta da yawa na iya shafar launin gilashin. "Masana'antarmu tana samar da masana'antu uku a lokaci guda: abrasives, refractories, da yumbu," wani mai kula da samarwa ya koka da ni, "Dole ne mu sami kayan aikin gwaji guda uku a cikin bitar, bin ƙa'idodi uku daban-daban. Duk da cewa duk foda mai launin ruwan kasa ne da aka haɗa da alumina, abin da aka mayar da hankali ya bambanta da gaske."
3. Ka'idojin Kasuwanci: Ainihin "Littafin Aiki"
Abin da ke jagorantar samarwa galibi shine ma'aunin kasuwanci. Ma'aunin ƙasa da na masana'antu shine matakin wucewa na 60%, yayin da ma'aunin kasuwanci shine "littafin aiki" don cimma kashi 90%. Na ziyarci wani mai kera ƙananan ƙwayoyin cuta masu inganci, kuma ma'aunin kasuwancinsu ya fi tsauri fiye da ma'aunin ƙasa. Misali, ma'aunin ƙasa na ƙananan ƙwayoyin cuta na F800 yana buƙatar "kashi na manyan ƙwayoyin cuta ya zama bai gaza kashi 45% ba," yayin da ma'aunin kasuwancinsu yana buƙatar "ba kasa da kashi 55% ba," kuma lanƙwasa rarrabawar girman ƙwayoyin cuta dole ne ya kasance mai tsayi don tabbatar da daidaiton ƙwayoyin cuta. Sun kuma ƙara alamar "ƙimar siffar ƙwayoyin cuta" wadda ba a haɗa ta a cikin ma'aunin ƙasa ba, wanda ke buƙatar cewa ƙwayoyin cuta masu laushi da siffa ta allura ba su wuce wani rabo ba.
II. Ma'aunin Ƙasashen Waje: Dokoki daban-daban na Wasan
Idan ana mu'amala da abokan ciniki na ƙasashen waje, za ku ga cewa "ƙa'idodin wasan" su sun bambanta sosai.
1. ISO na Ƙasashen Duniya: Tsarin Faɗi na Neman Manufofi Na Haɗin Kai Yayin da Ake Girmama Bambanci
Jerin ISO 8486 ma'auni ne da aka sani a duniya don girman barbashi mai gogewa. Babban fasalinsa shine kafa cikakken tsarin "F grit size", daga F4 (kimanin 4.75mm) zuwa F1200 (kimanin micrometers 12), wanda ya rufe dukkan nau'ikan barbashi masu gogewa.Matsayin ISO yana mai da hankali musamman kan yanayin kididdiga na "rarraba girman barbashi." Ba wai kawai yana duba manyan barbashi ko girman barbashi na asali ba, amma yana jaddada cewa dukkan lanƙwasa rarrabawa dole ne ya cika buƙatun. Wannan yana buƙatar kayan aikin gwaji na zamani, yawanci na'urar nazarin girman barbashi ta laser; hanyoyin siminti na gargajiya ba su isa ba. "Lokacin da muka fara yin gwaji bisa ga ƙa'idar ISO, mun gano cewa samfuran da a da ake ɗauka 'masu cancanta' suna da faɗin rarraba girman barbashi bisa ga sabon ƙa'idar, wanda hakan ya sa ba su cancanta ba," in ji wani darektan dakin gwaje-gwaje. "Daga baya, mun daidaita tsarin tantancewa don ya cika ƙa'idodi da gaske. Kodayake tsarin yana da zafi, gasawar samfurin a kasuwar duniya ta inganta."
2. Ma'aunin Amurka ANSI/FEPA: Daidai gwargwado ga Matsayin Bukatar
Ma'aunin Amurka, musamman ma'aunin ANSI B74.12 da FEPA, suna da tasiri mai mahimmanci a fannin ƙananan foda. Idan ma'aunin ISO shine "tsarin," ma'aunin Amurka shine "wanda aka mayar da hankali kan cikakkun bayanai". Idan aka ɗauki "girman grit" na FEPA (wanda ya yi daidai da girman grit na ISO) a matsayin misali, yana da takamaiman buƙatun kashi don rarraba girman barbashi na kowane girman grit, daidai ga wurare da yawa na decimal. Misali, ga P240 (kimanin micrometers 58.5), ya ƙayyade cewa D3 (a 3% rarrabawa mai tarin yawa) bai kamata ya wuce micrometers 69.8 ba, D50 (diamita matsakaici) ya kamata ya kasance tsakanin micrometers 51.7-56.3, kuma D94 bai kamata ya wuce micrometers 42.0 ba. Wannan matakin daidaito yana sanya buƙatu masu yawa akan sarrafa tsarin samarwa.
Abin da ya fi “buƙata” shi ne cewa ma'aunin Amurka yana da tsauraran iyakoki kan “jurewar barbashi mai kauri.” Misali, ga ƙananan foda masu girman F400 iri ɗaya, babban iyaka ga barbashi mai kauri da ma'aunin Amurka ya yarda ya yi ƙasa da na ma'aunin China. "Abokan ciniki na Turai da Amurka sun damu musamman game da wannan," in ji wani manajan cinikayya na ƙasashen waje. "Suna jin tsoron cewa barbashi masu kauri za su goge saman aikin. Ga kayayyakin da muke fitarwa zuwa Amurka, dole ne a maimaita tsarin tantancewa sau biyu don tabbatar da cewa an tantance waɗannan barbashi masu kauri da suka tsere."
3. Ma'aunin Turai da Japan: Manufofi daban-daban
Baya ga rungumar ƙa'idodin ISO, manyan masana'antun Jamus da yawa suna da nasuƙa'idodin ciki(kamar buƙatun da aka samo daga ƙa'idodin DIN), waɗanda galibi sun fi tsauri fiye da ƙa'idodin ƙasashen duniya, musamman game da daidaiton abubuwan da ke cikin sinadarai da kwanciyar hankali na rukuni. Ma'aunin Japan (JIS R 6001) yana da ban sha'awa sosai; yana mai da hankali sosai kan "aiki na aiki." Baya ga alamun zahiri da na sinadarai na yau da kullun, yana kuma buƙatar "gwajin ƙarfin niƙa," ta amfani da hanyar da aka saba don niƙa ta gaske don lura da ingancin niƙa da ingancin saman aikin. Wannan yana nuna tunanin "wanda ya dogara da sakamako" na kamfanonin Japan.
Ⅲ. Kwatancen Daidaitacce: Manyan Bambance-bambance Da Dama
"Abin da ke bani ciwon kai ba shine ƙa'idodin kansu ba," in ji wani darektan inganci, "amma abokan ciniki suna amfani da ƙa'idodi daban-daban don dubawa. A watan da ya gabata, don oda ɗaya, abokin ciniki na cikin gida ya duba bisa ga ƙa'idodin ƙasa, kuma ya wuce; abokin ciniki na Koriya ya duba bisa ga ƙa'idodin KS (kamar JIS), kuma ya wuce; amma abokin ciniki na Jamus ya duba bisa ga ƙa'idodin FEPA, kuma alamomi biyu suna kan ma'aunin mahimmanci, wanda ya haifar da dogon takaddama."
Ⅳ. "Hikima ta Daidaitacce" a cikin Aikace-aikacen Aiki
A aikace, bin ƙa'idodi na yau da kullun ba ya aiki; kuna buƙatar "hikima ta yau da kullun." Da farko, dole ne ku fahimci "ruhun" ma'aunin. Kowane ma'auni yana da ma'anarsa a bayansa. Misali, me yasa ƙa'idodin Amurka suke da tsauri akan ƙananan barbashi? Domin masana'antar kera daidaiton Amurka tana da ci gaba sosai, kuma suna tsoron karce sassan daidai. Fahimtar wannan, kun san cewa samfuran da aka fitar zuwa Amurka dole ne a sanya isasshen ƙoƙari a cikin tsarin tantancewa.
Abu na biyu, koyi yadda ake "canzawa tsakanin mizanai." Masu fasaha masu ƙwarewa duk suna da "teburin lissafin tunani": kusan adadin F ya yi daidai da matsakaicin gida da foda mai laushi, da kuma bambanci tsakanin jerin P na Amurka da jerin ISO F. Ko da yake ba cikakke ba ne, yana da amfani sosai a cikin sadarwa ta farko. "Yanzu muna horar da sashen tallace-tallace, kuma darasi na farko shine teburin kwatantawa na yau da kullun," in ji wani mai kula da horo, "don rage asarar oda saboda rashin fahimtar mizanai."
Mafi mahimmanci, kafa "manhajar asali." Kamfani mai nasara zai, bayan ya fahimci ƙa'idodin cikin gida da na ƙasashen waje sosai, ya ƙirƙiro wasu ƙa'idodin kula da ciki waɗanda suka fi duk buƙatun abokin ciniki. "Matsalolin kula da cikin gida sun fi tsauri fiye da ƙa'idodin abokan ciniki mafi tsauri," in ji wani babban manajan masana'anta. "Ta wannan hanyar, komai ƙa'idodin da abokan cinikinmu ke amfani da su, za mu iya sarrafa su cikin sauƙi. Kodayake yana da tsada kaɗan, yana gina suna don inganci, wanda yake da daraja a cikin dogon lokaci."