- 25
- Sep
Njerwa zoyatsira zofukizira mafakitale
Njerwa zoyatsira zofukizira mafakitale
Ubwino wazogulitsa: kutentha kwambiri, kukana kukokoloka, kulimba kwamphamvu, umphumphu wabwino, kukhazikika kwamphamvu kwamatenthedwe, moyo wautali, ndi zina zambiri.
Kugwiritsa ntchito kwazinthu: Zowotcha zamakina zopangira monga zomangira zoumba komanso zogwiritsa ntchito tsiku ndi tsiku. Kutentha kwakanthawi, kufunikira kwamphamvu, kuvala,
Mafotokozedwe Akatundu
Chowotcha chimatchedwanso chowotchera, chomwe ndi chida choyaka moto chanyumba yamagesi pachitofu chamafuta, ndipo chitha kumveka ngati “nozzle yamoto”. Kawirikawiri amatanthauza gawo la thupi la chida choyaka moto, chomwe chimakhala ndi polowera mafuta, polowera mpweya ndi kabowo ka kutsitsi, komwe kumagwira ntchito yogawa mafuta ndi mpweya woyaka moto ndikuupopera munjira inayake yoyaka. Pali njira ziwiri zomwe zimagwiritsidwa ntchito popanga njerwa, zomangira zomanga njerwa komanso kuphatikizira koyambira. Njerwa zowotchera zomwe zikugwiritsidwa ntchito pano zimapangidwa ndimakola osunthika ndipo amagwedezeka nthawi imodzi kudzera pachikombole chapadera.
Ntchito za njerwa zotentha pamoto ndi:
1. Kutenthetsani mafuta mu njerwa yoyatsira kutentha kwa poyatsira kuti ikhale yosavuta kuyatsa ndikuwotcha msanga;
2. Sungani kutentha pang’ono pamatabwa oyatsa kuti muzitha kuyatsa komanso kupewa kupindika kapena kusokoneza kuyaka;
3. Konzani mawonekedwe amoto kuti akwaniritse zofunikira pakuwotcha;
4. Kuti mupitilize kusakaniza mafuta ndi mpweya.
Malinga ndi zida zosiyanasiyana, imagawidwa m’magulu anayi: corundum, aluminiyamu yayikulu, silicon carbide, ndi mullite. Malinga ndi zofunikira, zida zosiyanasiyana zimasankhidwa monga akaphatikiza ndi ufa, ndipo zowonjezera zowonjezera zimawonjezedwa. Aluminium phosphate imagwiritsidwa ntchito ngati binder. Kugwedezeka kumapangidwa ndikuphika. Khalani. ,
Zizindikiro zakuthupi ndi zamankhwala
dzina mankhwala | Corundum | Mkulu zotayidwa | Silicon carbide | Mullite |
Mlingo wambiri (g / cm3) | 2.8 | 2.7 | 2.7 | 2.7 |
Kupondereza mphamvu 500 ℃ kuphika (MPa) | 100 | 75 | 75 | 90 |
Kusintha kwa mzere mutayaka (%) (℃ xh) | 0.3 (1550 × 3) |
0.4 (1350 × 3) |
0.2 (1400 × 3) |
0.3 (1400 × 3) |
Kubwezeretsa (℃) | > 1790 | 1730 | 1790 | 1790 |
A12O3 (%) | 92 | – | – | 82 |
SiC (%) | – | 88 | 88 | – |