Bo’shatish harorati S
|
HRC toblash
bo’shatishdan so’ng, dan kam emas
|
Qo’llanilish sohalari
|
U9,U9A
|
192
|
150-160
200-220
|
63-64
59-60
|
Diskali arralar, zubilo, to’nuka qirqish uchun qaychi, misga ishlov beruvchi keskichlar
|
U10,U10A
|
197
|
150-160
200-250
|
63-64
59-60
|
Kichiq diametrli parma, metchiklar, razvyortkalar, plashkalar, kichiq diametrli freza, egovlar
|
U11,U11A
|
207
|
150-160
200-250
|
63-64
58-59
|
-‘‘-
|
U12,U12A
U13 U13A
|
207
217
|
150-160
200-250
|
63-64
59-60
|
Spiral parma, razvyort-
kalar, metchiklar, plashkalar, frezalar, o’ygichlar, grebyonkalar, sidirgichlar.
|
Izox: 1. Sifatli asbobsozlik po’latida(A harfisiz) oltin gugurtning miqdori 0,030 % dan ortiq; fosfor-0,035 % dan ortiq bo’lmasligi kerak.
2) A’lo sifatli uglerodli asbobsozlik po’latida (markasida A harfi) marganestning miqdori 0,15-0,30 %; oltingugurt - 0,020 % dan ortiq; fosfor - 0,030 % dan ortiq bo’lmasligi kerak. 3) Toblash harorati 760-780 S, sovitish muhiti- suv , moy.
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