Rings forging

Technolit Int. produces forged rings of different configuration that are used in the machines and mechanisms in various branches of machine building enterprises throughout the world. The outer dimensions of rings comprise up to 700 mm (27.559 in) in diameter and over 35 mm (1.37795 in) in height. The inner diameter may reach up to 350 mm (13.7795 in).

Rings forging (backing rings)  Technolit Int.

Steel grades used in forging of rings are 45, 20, 35, 40, 40, 402, 42, 18 and others.

The cutting of a ring blank is the initial stage of the forging. The blanks are cut either by a BAND SAW or a FLAME cutter. Technolit Int. operates two types of band saws: MYT-1 (for the processing of blanks of the maximum diameter 400 mm (15.748 in)) and MYT-2 (for the processing of blanks of the maximum diameter 600 mm (23.622 in)).

The temperature of rings forging depends on the blank steel grade. For example, the steel grade 45 is heated to 1200 +50 C (2192 -122 F). The forging temperature for the blanks of this steel grade ranges from 1250 -50 C to 750 +50 C (2282 -122 F to 1382 +122 F). The forging temperature for the blanks of 12 tool steel ranges from 1140 -30 C to 850 +30 C (2084 -86 F to 1562 +86 F), when heated to 1140 -30 C (2084 -86 F) accordingly.

The forging of rings is carried out, depending on a blank weight, by a steam-air hammer with the weight of the falling part of 1, 2 or 3 metric tons (0.9842, 1.9684, 2.9526 long tons or 2204.6, 4409.2, 6613.8 lbs).

Heat treatment of a ring is the pre-finishing stage of forging. Depending on a steel grade NORMALIZING or ANNEALING shall be applied for the heat treatment.

The turnaround time depends on the amount of blanks to be manufactured (forged) and the specification complexity.

Acceptance by the Quality Control Department of the works completed is the final stage before forgings are delivered to the customer. All forgings are subject to allowances according to GOST 8479-70.

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