BASIC DELIVERY SET
- Cross wedge rolling machine
- Mechanism for feeding billets into the machine
- Mechanism for unloading the billets, rejected by the temperature.
- Mechanism for unloading the inductor
- Feed hopper
- Operating platform with a ladder.
- Loading tray
- Mechanism for feeding billets into the inductor
- Induction heater cabinet
- Inductor
- Pyrometer
- Mechanism for unloading the machine
- Frequency converter
- Hydraulic drive
- Pneumatic driv
- Electric equipment cabinet
- Electric power equipment cabinet
- Control board of the cross wedge rolling machine
- Adjusting control board
- Cooling system
- Desk for wedge dies mounting
- Wedge dies set
- Conveyor for transporting preforms to the press
- Conveyor for unloading butt-ends
- Conveyor for billets rejected by the temperature
- Scales
- Reducer
- Transmitter of the rotation angle
DELIVERY SET INCLUDES
- Operations manual
- Wedge die drawings
- Inductor drawings
- Set of spare parts
NEW LINE OF CROSS WEDGE ROLLING MACHINES SPF
The machines of the SPF line are developed to produce preforms for further forging. The preforms produced on SPF wedge rolling machines acquire properties that are important for forging:
- Optimum shape
- Required weight
By optimum shape of the preform received by cross wedge rolling for further forging we mean the preform of round section that have longitudinal profile, in which distribution of the material along the axis of the round preform is in direct proportion to distribution of the material along the axis of the part after forging.
During forging process of such preform, the filling of the forging mold is realized evenly along the perimeter, the material is drifting along the shortest path. When using the preforms of the optimum shape for forging, this process is accomplished with minimal fin or without it. Meanwhile the minimum energy is spent and the lifetime of the forging die increases.
On picture 1 there is an example of the optimum shape preform for forging of the part “connecting rod”. The longitudinal profile of the preform of round section is calculated in such way that on each length segment the sectional area of the round preform is equal to the sectional area of the forged item.
Required weight. Forging of preforms in the required weight interval allows to reduce the quantity of the material in fin to minimum, and makes it possible to forge preforms without fin.
Cross wedge rolling machines of the SPF line are working in following way
The cylindrical billets are loaded in bulk into the feed hopper 5. From the feed hopper 5 billets are automatically loaded at the required speed into the inductor 10, where they are being heated. The temperature is controlled by the pyrometer 11. From the inductor 10 the billets are loaded into the cross wedge rolling machine 1 for rolling. The billets rejected by the temperature are directed into separate container. After rolling the manipulator carries the billet onto the scales 26. The information about the weight of the billet is transferred into controller, which is mounted in the electric equipment cabinet 16. The controller takes one of the following decisions depending on the weight of the billet:
- To direct the billet to the press for forging.
- To direct the billet to the press for forging and to regulate the diametral dimensions of the billet. The regulation is carried out by the reducer 27. The regulation degree is controlled by the transmitter of the rotation angle 28.
- To direct the billet into container for the billets rejected by weight and to regulate the diametral dimensions of the billet
Operation 2 is performed when the weight of the billet is within the permissible weight range P, but out of the regulation inhibit range G (picture 2).
Operation 3 is performed when the weight of the billet is out of the permissible weight range P (picture 2).
The permissible weight range P and the regulation inhibit range G can be promptly specified during the operating cycle of the cross wedge rolling machine.
Technological operating cycle of the cross wedge rolling machines of the SPF line can be represented in the following way
ROLLING – SCALING – DIAMETER REGULATING – ROLLING
Cross wedge rolling machines of the SPF line are constructed in such way that it becomes possible to regulate the diametral dimensions of billets with the resolution 0,02…0,05 mm. The regulation can be carried out within the time period, when the wedge dies are moving into home position that is why it is not necessary to stop the machine to make the regulations. The accuracy of regulation allows to reach the weight accuracy of billets for forging in the range of 1,5%.