Kulingalira kwakukulu pamene mpeni wakukhitchini wa kusankha ndikugula zinthu ziwirizi -
-
Zida za tsamba ndi kugwiritsa ntchito chitonthozo -
Zosankha zakuthwa zakuthwa nthawi zambiri zimakulitsa kuuma kwa tsamba, ndizomwe zimakhala zakuthwa kwambiri.
Tsamba la zinthu wamba ndi Mkhalidwe kuuma ndi kuchokera mkulu kuti otsika dongosolo motere: ufa zitsulo & gt;
VG10(
HRC58 -
62).
>
VG2>
1.
4116 (
HRC54-
58)
Ndipo 50 crmov15 & gt;
40Kr13>
30Cr13 (
HRC48-
52)
.
Nthawi zambiri, HRC (
Kulimba kwa Rockwell)
Kufikira 60 + 2, walowa kale pakhomo la 'chitsulo cholimba'.
Komabe, apamwamba kuuma, zosavuta pogaya lakuthwa, komanso wachifundo, ngati mpeni ngati ntchito molakwika zosavuta 'kung'amba';
Kulimba kwapansi kwa dao, kulimba kwabwino, kosavuta 'm'mphepete', koma kugwiritsa ntchito nthawi yayitali nthawi zambiri kumafunika kunola.
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Kugwiritsa ntchito chitonthozo mu khitchini ya kalembedwe ka China, kuwaza zodzaza monga kugwiritsa ntchito nthawi yayitali, ngati sibwino kunyamula mpeni, sangatchule kuti 'good dao', chifukwa chake kusankha chogwirira ndikofunikira kwambiri.
Khomo la msika tsopano pali mitundu inayi ikuluikulu ya mitundu yopitilira inayi yosiyana: 'Kupanga chogwirira kobowo kumatha kusintha.
'Mutu' chitsulo chogwiririra ndi cholemera, ntchito kumverera ndi wamphamvu.
'Pulasitiki chogwirira' ntchito touch kwa nthawi yaitali ndi zoipa.
Zosasunthika za 'matabwa' zidzakhala zabwinoko pang'ono.
Yesani panokha, pambuyo pa zonse, njira yodula yomwe aliyense amagwiritsa ntchito.
