Ring forging production process

1、Slip wire drop.
Cutting ingots into reasonable sizes and weights according to product requirements.
2、Heating (including tempering).
Heating equipment mainly single chamber furnace, push rod furnace and table annealing furnace, all heating furnaces use natural gas as fuel, the heating temperature of ingots is generally between 1150℃ and 1240℃, the heating time of cold ingots is about 1 to 5 hours, while the heating time of hot ingots is half of the heating time of cold ingots, the heated ingots enter the forging process.
3. Forging.
The ingot is heated to about 1150-1240℃ and taken out of the heating furnace, then the operator puts in the air hammer or electro-hydraulic hammer and carries out the corresponding piercing, drawing and other processes according to the size of the ingot and the forging ratio requirements, monitoring the forging size in real time and controlling the forging temperature by infrared thermometer.
4、Inspection.
Preliminary inspection of forging blanks, mainly appearance and size inspection. In terms of appearance, the main inspection is whether there are cracks and other defects, and in terms of size, we must ensure that the margin of the blank is within the requirements of the drawing, and make a good record.
5、Heat treatment.
The forging is heated to a predetermined temperature, held for a certain period of time, and then cooled at a predetermined rate to improve the internal organization and performance of forgings a comprehensive process. Its purpose is to eliminate internal stress, to prevent deformation during machining, adjusting the hardness of the forgings to facilitate cutting. After heat treatment of ingots, according to the material requirements of the ingots for air cooling or water cooling, quenching treatment.
6、Rough machining.
After the basic forming of forgings, they are processed into various forgings with different specifications according to the product requirements.
7、Ultrasonic flaw detection.
After the cooling of the forging is finished, the temperature is lowered to about 20℃ for ultrasonic flaw detection to reach the national standard Ⅰ, Ⅱ, Ⅲ, etc. and the inspection of surface defects.
8、Mechanical performance test.
In order to meet customer demand, the mechanical properties of forgings must be tested mainly yield, tensile, impact and other tests. The main testing equipment has 1 universal mechanical properties testing machine, 1 impact testing machine, continuous steel pointing machine, 1 ultrasonic flaw detector, 1 magnetic particle flaw detector, 2 pyrometers, 1 electric double-blade broaching machine, 1 impact low temperature instrument, 1 metallographic microscope, 1 metallographic pre-grinding machine, 1 metallographic cutting machine, 2 Brinell hardness testers, etc., which can basically meet the needs of all kinds of forgings conventional testing.
9、Final inspection.
Final inspection of the finished forgings to ensure that the forgings are smooth in appearance without cracks and other defects, and that the dimensions are within the requirements of the drawings and are well recorded.
10、In storage.
After the quality inspection, the finished forgings will be put into the finished goods warehouse for delivery after a simple packaging process.