Ishlab chiqish

P	Cr	Cu	Fe
Al
0.31	0.70	0.65	0.11	0.033	0.023	0.67	0.17	96	0.03
0.35	0.75	0.62	0.10	0.031	0.022	0.68	0.16	96	0.02
0.29	0.77	0.67	0.11	0.032	0.022	0.68	0.19	96	0.02
0.29	0.71	0.60	0.10	0.035	0.023	0.66	0.19	96	0.03
0.23	0.65	0.59	0.11	0.030	0.022	0.62	0.17	96	0.03

Pic. 3. High – quality shafts cast on the basis of technologies.
Based on the implementation of liquefaction modes of 35XGCL alloy at different temperatures in electric arc furnaces, the technology of obtaining cast products with surface cleanliness and high mechanical properties was developed. The technology of liquefying the mixture in an optimal way and pouring it into sand – clay molds has been developed.
The technology of processing the alloy using inert gases outside the furnace has been developed. Processing mode and casting technology were developed based on the dynamics of gas and nonmetallic inclusions in the obtained alloy.

a)	b)

Pic. 4. Microstructures of the alloys taken by SEM JSM-IT200. a) After casting. b) After heat treatment.
CONCLUSION
Based on the above, based on the developed coefficients, a mathematical model of the process was developed, which ensures the effective operation of the technology in relation to the production capacity.
A technology has been developed that ensures the reduction of the amount of gas pores by 35 – 40% and the amount of non – metallic inclusions by 25 – 30 % in the cast products obtained from the 35XGCL alloy. As a result, the mechanical properties of cast products increase by 16 – 18 %, and the service life is increased by 1.2 – 1.4 times.


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