O’zbekiston respublikasi oliy va o’rta maxsus ta’lim vazirligi termiz davlat universiteti ter

Normalization of steel - the kind of heat treatment of steel, consisting in heating (above the upper critical point), holding and cooling in air in order to give the metal a uniform fine-grained structure to increase its ductility and toughness
Hardening of steel - steel is heated above the temperature of Ac ₃ and Ac ₁ , maintained and the necessary changes in the structure of the steel, after which it quickly cools.
Vakal'yaemost steel (the degree of hardening) - the property of steel, in which as a result of hardening it increases hardness.
Steel softening is the process of incandescence of hardened steel below the Ac temperature of critical point, after keeping in a certain period of time at a given temperature a slow or rapid cooling
Sorbitol - structural constituent of iron-carbon alloys - eutectoid mixture of ferrite and cementite, dispersed varieties of perlite
Troostite is a structural component of iron-carbon alloys-an eutectoid mixture of ferrite and cementite, a variety of perlite. Austinit is cooled to about 500 ⁰ s and at this temperature, after which a mixture of ferrite and cementite is formed, in katori the hardness is higher than that of sorbitol .
O’ZBEKISTON RESPUBLIKASI OLIY VА O’RTA MAXSUS
TA’LIM VAZIRLIGI
TERMIZ DAVLAT UNIVERSITETI

“HAYOT FAOLIYATI XAVFSIZLIGI”

FANIDAN TAYYORLAGAN
ILOVALAR


TERMIZ 2021

O‘ZBEKISTON RESPUBLIKASI
OLIY VA O‘RTA MAXSUS TA’LIM VAZIRLIGI
TERMIZ DAVLAT UNIVERSITETI
Ro’yxatga olindi: ”Tasdiqlayman”
№_________ Termiz davlat universiteti
2021yil ” ___” _________
rektori:___________A.R.Marahimov
”___” __________2021 yil
HAYOT FAOLIYATI XAVFSIZLIGI
FAN DASTURI

Bilim sohasi:	100000	–	Gumanitar soha
Ta`lim sohasi:	110000	–	Pedagogika
Ta`lim yo’nalishi:			Barcha ta’lim yo’nalishlari uchun