make up natural cara make up make up tutorial make up korea make up minimalis make up artis make up mata belajar make up make up wardah alat make up makeup forever indonesia makeup artist jakarta tips make up barbie make up natural make up make up wajah make up pesta make up syahrini makeup mata makeup minimalis peralatan make up make up cantik make up mac make up kit jual make up make up sederhana perlengkapan make up gambar make up vidio make up cara makeup minimalis wardah make up make up pac make up glamour cara memakai makeup make up panggung harga make up make up modern make up alami make up dasar pixy make up make up muslimah make up oriflame make up jepang makeover cosmetic make up ultima make up sariayu grosir make up makeup fantasi makeup pesta tas makeup langkah make up make up pria make up malam alat makeup tahapan make up produk make up shading make up mak up make up kebaya make up jilbab make up inez make up simpel contoh make up cara ber makeup makeup wajah tanpa make up make up terbaru toko make up mac makeup indonesia make up soft urutan make up trik make up makeover makeup brand gusnaldi make up paket make up panduan make up jual makeup brush make up bagus alat2 make up make up gusnaldi aplikasi make up alat alat makeup dasar make up inez make up peralatan makeup make up wanita make up berjilbab make up tebal sejarah make up make up maybeline make up branded make up siang tata cara makeup reseller make up make up muslim make up maybelin warna make up tips make up artist rias make up make up mata make up artis belajar make up make up artist kursus make up kuas make up make up forever indonesia jual make up mac indonesia make up make up artist indonesia harga make up forever jual make up online make up pac make up forever jakarta make up oriflame jual make up forever make up online shop indonesia harga make up sekolah make up grosir make up harga make up maybelline jual make up murah make up terbaru mak up mac make up indonesia sofia make up make up kit murah mac makeup indonesia produk make up jual make up kit make up store indonesia make up forever academy jakarta toko make up online jual make up set jual make up mac make up beauty jual make up branded produk make up mac make up forever harga make up mac indonesia produk make up artis jual make up palette produk make up forever make up palette murah before after make up pengantin before after make up sendiri before n after hasil makeup contoh make up karakter contoh riasan pengantin before n after harga make up wisuda harga make up artist harga make up forever make up wisuda rias wisuda di jogja Daftar harga make up forever daftar harga make up mac daftar harga kosmetik make up forever makeup wisuda harga makeup wisuda kursus make up di yogyakarta kursus make up di jogja kursus make up jogja kursus make up yogyakarta kursus kecantikan di yogyakarta kursus kecantikan di jogja kursus make up artist di jogja kursus rias pengantin di jogja kursus rias di yogyakarta kursus tata rias di yogyakarta rias pengantin muslim jogja jasa kreasi jilbab wisuda yogyakarta jasa rias make up wisuda murah bagus bisa dpanggil tempat make uf di jigja yang bagus rias wisuda murah dan berkualitas yogyakarta pakar kreasi jilbab di jogja make uper natural yogya make up wisuda hijab area jogja make up dan kreasi jilbab yang bagus di jogja jasa make up natural untuk wisuda jogja makeup jogja make up jogja makeup yogyakarta make up yogyakarta makeup wisuda jogja make up wisuda jogja make up wisuda yogyakarta makeup wisuda yogyakarta
Search - People/Events
Search - Content
Search - Industry
Search - Forums
Search - Newsfeeds



jobcenterbanner

FacebookLinkedinPinterestYoutube
Welcome, Guest
Username: Password: Remember me
If you have a question regarding coaxial, telephone, and building wire, power cable, insulation, extrusion, bunching, stranding, braiding, etc. post it here.

TOPIC: self lubricant enamel

self lubricant enamel 11 months 2 weeks ago #2641

  • Mr Nima Rahati
  • Mr Nima Rahati's Avatar
  • OFFLINE
  • Junior Boarder
  • Posts: 25
  • Thank you received: 1
  • Karma: 0
Hi
In wire enameling process we use self lubricant top coat . This self lubricant must have a Coefficient of friction about 0.04 to 0.05 (according to the manufacturer declaration). But in practice we face to coefficient of friction about 0.07 to 0.08. Therefore we have to use additional paraphin layer on self lubricant surface. Why this phenomela happen? and how can we decrease COF of self lubricant? What are self lubricants disadvantages?

Process informations:
copper wire 0.30 and 0.32 mm diameter
enamel: 661/42A Under coat and one pass Tongmid 595 MBL self lubricant for top coat both from Elantas.
oven temperature : 610 oc
wire speed : 300 to 310 m/min

Thanks
Nima
Last Edit: 11 months 2 weeks ago by Mr Nima Rahati. Reason: editing
The administrator has disabled public write access.

Re: self lubricant enamel 11 months 1 week ago #2671

  • Richard Burke
  • Richard Burke's Avatar
  • OFFLINE
  • Senior Boarder
  • Posts: 44
  • Thank you received: 4
  • Karma: 2
Mr. Rahati,
My first thought would be that perhaps you are not getting sufficient coverage of the Tongmid 595 MBL. Typically this product is the second or third coating placed upon the wire. It is sometimes little more than a wash but it is essential that the coating completely cover the wire. Even though the amount of placed on the wire, it normally would take multiple passes through the applicator to obtain complete coverage.
Hitachi developed a similar product and has patented it. I am not a chemist, but my biggest concern is that this material utilizes Silane Coupling Agents: silicon-based chemicals that contain two types of reactivity – inorganic and organic – in the same molecule. A typical general structure is (RO)3SiCH2CH2CH2-X, where RO is a hydrolyzable group, such as methoxy, ethoxy, or acetoxy, and X is an organofunctional group, such as amino, methacryloxy, epoxy, etc.

A silane coupling agent will act at an interface between an inorganic substrate (such as glass, metal or mineral) and an organic material (such as an organic polymer, coating or adhesive) to bond, or couple, the two dissimilar materials.

Initially they used it for inverter wire where they put on a base coat, then a heavier intermediate coating that include silica sol (silica in solution). This coating has microscopic or nano slilica particles in it to essentially make a ceramic coating. The final coating was the self-lubricated polyamideimide enamel.

Most wire enameling systems today utilize a precious metal coated metallic mat(s) as a catalysts to convert the solvents released by the cutting process into heat energy. Today’s enameling systems depend upon this released energy to maintain the operating heat of the enameling oven. The metallic catalytic mat is coated with platinum or palladium and other precious metals so that a reactive surface is created. When the solvent vapors come in contact with this surface there is a catalytic reaction which release the heat energy that is in the solvent vapor.

When enamel is heated, the solvent vapor evaporates and as it evaporates it carries some of the solids of the enamel with it. (note when you see smoke what you are seeing is either the vapor or an accumulation of minute particles of solids in the vapors.) Along with the various resin particles there are silicon or silica particles entrapped in the vapors and as they pass through the catalysts, the solvents will burn but the solids either become a very fine ash, go up the stack, or in the case of the silicon/silica they stick to the catalyst and over time will form a glass like coating on the catalyst mat. This means that the catalysts will not work, your electrical consumption will increase, your emissions or pollutants will increase, and in some cases you will not be able to maintain oven operating temperature and or operating speed.

I have seen this occur in as few as three days with some enamels!
The administrator has disabled public write access.
Time to create page: 0.278 seconds