Blocks and plates forging
Technolit Int. also has a great experience in forging blocks and plates at its facilities. Plates and blocks are used in the machine building industry, for the production of stamping tackle, dies, stamping punches, etc. The maximum dimensions of a forged block comprise 350 mm (13.7795 in) with the length of up to 3000 mm (118.11 in) and the weight of up to 1500 kg (3306.9 lbs), the maximum dimensions of a plate side reaching up to 600 mm (23.622 in).
Steel grades used in forging of blocks and plates are 45, 20, 35, 40Õ, 40ÕÍ, 40ÕÍ2ÌÀ, 42ÕÌ, 12Õ18Í10Ò, Ó8, ó10, 9ÕÑ, Õ12Ì, 4Õ5ÌÔÑ and others.
The cutting of the blanks is the initial stage of the forging. The blanks are cut either by a BAND SAW or a FLAME cutter depending on the intensity of the equipment use. 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 block or plate forging depends on the blank steel grade. For example, the steel grade 20 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 Õ12Ì 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 parts 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 square or plate is the pre-finishing stage of forging. Depending on the 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 (of the block or the plate) are delivered to the customer. All forgings of the square or plate are subject to allowances according to GOST 8479-70.
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- HOT STAMPING
- ARTISTIC FORGING
- HEAT TREATMENT