Tsamba la Disc Harrow
Ma disc a harrow okhala ndi corrugated harrow (omwe amadziwikanso kuti notched disc harrow disc kapena corrugated harrow discs) ndi zida zofunika kwambiri pamakina amakono olima ulimi, omwe amagwiritsidwa ntchito kwambiri mu ma disc harrow akuluakulu, makina olima pamodzi, komanso obzala mbewu molondola. Chogulitsachi chili ndi kapangidwe kake kapadera ka corrugated m'mphepete komanso ukadaulo wapamwamba wochizira kutentha, zomwe zimapangitsa kuti nthaka isweke bwino komanso kuchepetsa kwambiri kukana kugwira ntchito. Ndi chinthu chofunikira kwambiri komanso chofunikira kwambiri pakulima bwino komanso kulima bwino.
Chogulitsachi chimagwiritsa ntchito chitsulo cha manganese cha 65Mn kapena chitsulo cha boron champhamvu cha 30MnB ngati maziko ndipo chimapangidwa ndi kupondaponda kutentha kwambiri. Kuti tiwonetsetse kuti sitingathe kutopa komanso sitingathe kukhudza, timagwiritsa ntchito chingwe chopangira kutentha chomwe chimayendetsedwa ndi makina kuti tichite kuyeretsa kwa isothermal ndi carburizing pamwamba, kotero kuti kuuma kwa masamba a rake kufika pa HRC 38-45, pomwe pakati pake pamakhala kulimba kwambiri. Poyerekeza ndi masamba wamba a rake, nthawi yake yogwiritsidwa ntchito imakulitsidwa ndi zoposa 30%, zomwe zimathandiza kupewa ming'alu ndi kugwedezeka kwa masamba pamene akugwira ntchito mumchenga.
Mosiyana ndi ma disc osalala achikhalidwe, masamba a rake ozungulira ali ndi ma notches akuluakulu komanso akuya a mafunde 4-10 omwe amagawidwa mofanana. Geometry iyi imabweretsa zabwino zitatu zazikulu:
Mphamvu yodulira mwamphamvu: Mphepete yodulira yozungulira imapanga mphamvu yosweka ngati "mfundo", kudula mosavuta mapesi a mbewu ndi udzu, ndikulowa m'magawo olimba komanso opapatiza, kuthetsa bwino mavuto "otsetsereka" ndi "zovuta kulowa" a zida zodulira ma disc akamagwiritsa ntchito dothi lolemera la dongo kapena minda yokhala ndi ziputu zambiri.
Kusakaniza kofanana: Pakazungulira, m'mphepete mwake mumapanga mphamvu yolimba yoponya nthaka mbali, kuonetsetsa kuti mapesi ndi nthaka zisakanikirana bwino, kuletsa mapangidwe a "zouma zolumikizana," komanso kuthandizira minda yoyera yobzala pambuyo pake.
Imadziyeretsa yokha komanso yoletsa kutsekeka: Malo apadera osinthira okhala ngati arc amaletsa kumatirira kwa nthaka yonyowa, zomwe zimapangitsa kuti ikhale yosavuta kusuntha ngakhale nthawi yamvula.
Kulima mosamala m'minda youma: Kuchotsa zinyalala, kulima pang'ono, ndi kusakaniza ziputu mutakolola mbewu monga chimanga, tirigu, ndi soya;
Dothi lolemera ndi dothi lopapatiza: Kuswa chidebe cha pulawo kuti mpweya ulowe bwino m'nthaka komanso kuti madzi alowe bwino;
Kulima kwakukulu pafamu: Monga gawo loyamba la kulima pamakina ophatikizana olima, zomwe zimapangitsa kuti ntchito ya "kudutsa kamodzi" ikhale yogwira mtima kwambiri.
Kugwiritsa Ntchito ndi Kusamalira: Mukakhazikitsa, onetsetsani kuti mtunda pakati pa masamba ozungulira a harrow ukukwaniritsa zofunikira zaulimi ndipo gwiritsani ntchito mabotolo apadera omangira. Ndikofunikira kuyang'ana nthawi zonse kuwonongeka kwa m'mphepete mwa cutterhead. Ngati radius ya kuwonongeka kwa m'mphepete mwa cutting ipitirira 3mm, isintheni mwachangu kuti muwonetsetse kuti kuzama kwa ulimi kukuchitika nthawi zonse komanso kuti nthaka isasweke.
