Horizontal forging press Smeral LKH 1200 — 1200 ton
Smeral LKH 1200 forging upsetter - description
Technical specifications Smeral LKH 1200 (ID:75642)
| Type | Forging upsetter |
| Manufacturer | Smeral |
| Model | LKH 1200 |
| Press capacity | 1200 ton |
| Tightening capacity | 420 ton |
| Total stroke | 500 mm |
| Stroke of main crank shaft | 318 mm |
| Stroke of mobile die | 215 mm |
| Stroke/min | 27 |
| Bar diameter | 50-90 (150) mm |
| Max diameter of piece | 152 mm |
| Max weight of piece | 5 kg |
| Main motor power | 75 KW |
| Area of machine | 6400 x 4420 mm |
| Height of machine | 3830 mm |
| Weight | 128.7 ton |
Forging upsetter Smeral - technological processes and operations
| Forging | The process of plastic deformation of metal, in which the workpiece changes shape under the impact of blows or static pressure. During forging, the metal structure is densified, internal inhomogeneities are eliminated, and the mechanical properties of the material are improved. As a result, forged products are distinguished by high strength and reliability when operating under significant loads. Forging is used both for producing finished parts and for preparing workpieces for subsequent stamping. |
| Upsetting | Upsetting relies on the ability of metal to flow plastically under compression. When the workpiece is compressed from the end, the material moves outward, increasing the cross-section exactly where the part design requires. This is how bolt heads, flanges, collars, and stepped transitions are formed. The operation is performed on horizontal forging machines and presses, providing high accuracy and repeatability in the series production of fasteners and rod-type parts. |
| Calibrating | A finishing operation that brings the forging to precise dimensions. The workpiece is placed in a calibration die, where under pressure its surface is leveled and the geometry is brought to the specified tolerances. This process eliminates minor shape distortions left after previous operations. As a result, the part receives stable dimensions and a smooth surface without additional machining. |
| Trimming | When a hot forging leaves the die, flash comes out with it — excess metal squeezed into the gap between the tools. It is removed on a trimming press, where the part passes through a die and the cutting edge shears off everything excess along the contour. This is how the forging gets a clean edge and precise shape, ready for the next stage. |