Pretreatment da electrocoating tsari

Takaitaccen Bayani:

Coating pretreatment shi ne shirye-shiryen da shafi surface kafin shafi kuma shi ne tushen dukan shafi tsari.
Ingancin pretreatment kai tsaye yana rinjayar duk ingancin shafi, don haka dole ne mu kula da shi.

Aika mana imel

Bayani

Tags samfurin

Bayanin Samfura

Kayayyaki daban-daban da samfuran su a cikin aiwatarwa, sufuri, adanawa, saman sa yana da sauƙin samarwa ko
sandar al'amuran waje, irin su machining burr, fata mai oxide, mai, da dai sauransu, waɗannan gurɓatattun abubuwan da ke sama za su yi tasiri ga ƙarancin sutura da ƙarfin haɗin gwiwa tare da matrix. Rufaffen pretreatment na babban manufar ita ce cire waɗannan abubuwa da aiwatar da canjin sinadarai mai dacewa don samar da buƙatu masu dacewa na sutura, don haɓaka mannewar fim ɗin, tsawaita rayuwar fim ɗin, Ba da cikakkiyar wasa ga mai karewa. sakamako da kayan ado na shafi.

Saboda haka, fesa abun ciki kafin sarrafawa. Ya ƙunshi abubuwa masu zuwa:

Degreeasing kafin shafi

Karfe da sassa a cikin aiwatar da ajiya da kuma sufuri don amfani da antirust man kariya, sheet karfe workpiece a zane mai ya kamata a yi amfani da lokacin da matsa lamba aiki, sassa ya kamata a tuntuɓi emulsion a lokacin da machining, zafi magani iya tuntubar sanyaya mai, a lokacin da sassa ne sau da yawa da man fetur. tabo da HanJi na hannun ma'aikaci, maiko na sassa amma har da datti irin su ko da yaushe da kura gauraye tare Duk wannan, kowane irin mai a kan sassa ba kawai hana samuwar phosphating fim, amma kuma tasiri adhesion na shafi bushewa yi ado yi da lalata juriya Table 3-1 lists daban-daban pretreatment na sanyi birgima karfe farantin. Sakamakon cathodic electrophoretic shafi akan juriya na lalata.

Phosphating

Phosphating ne mai sauki, abin dogara, low-cost da dace tsari don ƙwarai inganta lalata juriya na karfe surface shafi. An yi amfani da shi sosai a cikin gida da waje, musamman a cikin kayan aikin mota, wanda aka fi amfani dashi a cikin 'yan shekarun nan. Kusan kashi 100% na sassa na bakin ciki a cikin masana'antar kera motoci sune tsarin phosphating phosphating yana nufin saman ƙarfe a cikin hulɗa tare da maganin acid wanda ke ɗauke da gishiri dihydrogen phosphate, amsa sinadarai da aka haifar a cikin kwanciyar hankali na ƙarfe na madaidaicin fili na membrane Layer. Hanyar maganin sinadarai ta saman da kuma fim ɗin da aka samar da ake kira fim din phosphating.

Ka'idar fim din Phosphate

Fim ɗin phosphating ya sami damar samar da tushe mai dacewa don shafa fenti, saboda sakamako mai zuwa:
1) Yana ba da tsaftataccen wuri mai tsabta, uniform, mara amfani da mai a kan cikakken raguwa
2) kara habaka da mannewa na Organic film zuwa substrate saboda jiki da kuma sinadaran mataki Ba wuya a gane cewa porous tsarin na phosphating fim ƙara surface area na substrate, sabõda haka, dangane yankin tsakanin biyu karuwa daidai, da kuma. ana haifar da fa'ida mai fa'ida tsakanin sassan fina-finai biyu. A lokaci guda, hulɗar sinadarai tsakanin resin unsaturated da phosphate crystal shima yana haɓaka ƙarfin daurinsa
3) samar da wani barga wanda ba ya haifar da warewa Layer, da zarar lalacewa ta shafi, yana da rawar da ke tattare da lalata, musamman ga anode incision Batun farko sau da yawa ana watsi da shi kawai don gaba ɗaya zuwa mafi kyawun mai don samar da fim mai gamsarwa phosphating Don haka. Fim ɗin phosphating da kansa shine mafi mahimmancin tasiri na fasahar pretreatment na mafi yawan abin dogara mai duba kai.