The selection of forging equipment is mainly based on the technical requirements of forgings (such as projected area, thickness (height), shape, complexity and accuracy, etc.) and material characteristics as well as the existing equipment condition of the enterprise.
1. Choose according to the characteristics of forging materials
All kinds of commonly used forging equipment can meet the requirements of ordinary structural steel forgings, according to the company's existing equipment conditions and the most economical choice of forgings batch.But for the special alloy forgings, the plasticity of the material and the requirements on the structure and performance of the forgings become the important basis for the selection of equipment.Such as:
1) Aluminum alloy, magnesium alloy and copper alloy forgings
Hydraulic press is the preferred forging equipment for large die forgings of aluminum alloy, magnesium alloy and copper alloy.For small and medium-sized aluminum alloy die forgings, often can choose the screw press, now most of the electric screw press.In the absence of the above equipment, forging hammer can also be used, but at this time should be strictly in accordance with the provisions of the technical procedures, so as to avoid forging cracking and uneven structure.
2) Titanium alloy
Hydraulic press is recommended for large titanium alloy die forging parts.The small and medium-sized titanium alloy die forgings are made by screw press.In the absence of the above equipment, forging hammer can be selected, but at this time should be strictly in accordance with the provisions of the technical procedures to operate, so as not to cause the organization and performance of unqualified.
3) Stainless steel forging
The forging of stainless steel forgings is generally not limited by the type of forging equipment.
4) Superalloy forgings
Hydraulic press is recommended for large superalloy die forgings such as turbine plates.For medium and small superalloy die forging parts, it is recommended to use screw press for die forging, and hammer for die forging is generally not recommended.
2. Select according to the projected area of the forging
1) Large die forgings
High temperature alloy, titanium alloy and aluminum alloy large die forgings, it is recommended to use hydraulic die forgings.For large die forgings of structural steel and stainless steel, hammer and hammer are usually chosen for economic reasons;For extremely large structural steel and stainless steel die forging parts, it is recommended to choose hydraulic press die forging.
2) Small and medium-sized die forgings
Spiral press is recommended for small and medium sized die forgings of superalloy, titanium alloy and aluminum alloy.Small and medium-sized die forgings of structural steel and stainless steel can be die-forged by mechanical press or screw press according to batch and existing equipment.
3. According to the forging thickness (or blank height)
1) Forgings with large thickness and high blank height
Hydraulic press is suitable for forging process with long working stroke of all kinds of materials, such as upsetting and die forging process with special alloy turbo disk forging with large amount of pressure and extrusion or punching process requiring the load to be almost unchanged in the whole long working stroke.
2) Thin forging
Die hammer and screw press are suitable for die forging thin forgings, but die hammer is limited to die forging stainless steel and titanium alloy forgings.Mechanical presses and screw presses are suitable for die forging of superalloys, titanium alloys, stainless steels, aluminum alloys, magnesium alloys and copper alloys.
4. Select according to the forging precision
1) High precision forgings
Mechanical press and screw press are suitable for precision die forging of titanium alloy and stainless steel blades and small and medium-sized forgings such as aluminum alloy, magnesium alloy and copper alloy.
2) Forgings of general accuracy
Hydraulic press and hammer are suitable for ordinary die forgings of general precision.
5. According to the forging batch and economic selection
1) Large quantities
Mechanical press is most suitable for automobile, agricultural machinery, medical equipment, hardware tools and other parts and aircraft engine blade mass die-forging parts production.
2) Medium batch
Forging hammer and screw press are suitable for die forging of medium batch forging parts. Electric screw press is commonly used by most manufacturers at present.
3) Small batch
Hydraulic press is suitable for small batch production of large die forgings.
The above Suggestions on the selection of forging equipment only start from the use characteristics of the forging equipment and the characteristics of forging pieces.However, the selection of forging equipment is very complex, in addition to the above selection principles, should also consider the enterprise's existing equipment, technicians and workers use the equipment history and familiarity with the equipment, etc.The equipment for the selection of specific special alloy forgings can generally meet only a few main principles.