1. Deformation temperature:
If you are looking for more details, kindly visit our website.
In the forging process of titanium, the degree of heating is a very important parameter, which must be strictly controlled for ingot casting. All should be selected above the a+β transition point, and then the temperature will gradually decrease with the increase of the deformation fire. When forging is close to a finished product; for one. The a+B alloy should have sufficient deformation below the a+β/B transformation point, at least 50%. For alloys, due to the low phase transition point, the heating should be basically above +β/phase transition point, the heating time should be respected, and the heating should be appropriate, the shorter the better.
For forging, the heating temperature is important, but it is more important to grasp the deformation temperature. The deformation temperature is affected by the operation time and the deformation speed. Although the heating temperature is suitable, if the operation time is too long, the temperature will drop rapidly and the forging process cannot be completed. If the temperature rises, the performance will be destroyed. Therefore, in the forging process, the operator is required to accurately control the deformation temperature.
2. Deformation
The amount of deformation is an important guarantee for obtaining a uniform and finely divided structure. Generally at a suitable temperature, the larger the deformation, the more uniform the organization, the better. For ingots, when the deformation reaches 70% to 80%, the castings will basically be broken. In order to obtain good forgings, the two-phase region must have sufficient fire deformation, and the fire deformation should not be less than 20% each time, in order to obtain good structure and properties.
3. Deformation speed
GIANT ANODE Product Page
The higher the deformation speed, the greater the deformation heat generated. Titanium has poor thermal conductivity. Therefore, when the deformation speed is high to a constant speed (such as hammer forging speed), the forging will be locally overheated, resulting in local changes in the structure, or even overburning, resulting in a decrease in the performance of the parts.
The suitable forging deformation speed is: during the deformation process, the temperature of the workpiece does not increase, but does not decrease rapidly, so that the workpiece can obtain sufficient deformation time at a certain temperature, and can also obtain good structure and performance.
From the perspective of deformation speed, the forging hammer speed is too high, the deformation heat generated during forging is very high, and it is easy to cause uneven structure. Therefore, in forging, it is necessary to use experience to master the severity and speed of hammer forging. The deformation speed of the hydraulic press is about 1/30 of that of vertical forging, and the deformation heat generated is much smaller. Easy to get good organization. But the temperature of the workpiece drops quickly, so it must be operated quickly.
The deformation speed of the precision forging machine is between the forging hammer and the hydraulic press, so the workpiece can be kept at a constant temperature for a long time, so as to avoid high heat generation of the workpiece. So for forging titanium, precision forging machine is a better equipment.
In summary, the forging process must strictly control the deformation temperature, deformation amount and deformation speed. Three factors, ignore one of them - one won't get high-quality damage, but in reality the three are affected by many factors. Comprehensively dealing with the relationship between the three is complex and requires a lot of work.
You can post now and register later. If you have an account, sign in now to post with your account.
1. Deformation temperature:
In the forging process of titanium, the degree of heating is a very important parameter, which must be strictly controlled for ingot casting. All should be selected above the a+β transition point, and then the temperature will gradually decrease with the increase of the deformation fire. When forging is close to a finished product; for one. The a+B alloy should have sufficient deformation below the a+β/B transformation point, at least 50%. For alloys, due to the low phase transition point, the heating should be basically above +β/phase transition point, the heating time should be respected, and the heating should be appropriate, the shorter the better.
For forging, the heating temperature is important, but it is more important to grasp the deformation temperature. The deformation temperature is affected by the operation time and the deformation speed. Although the heating temperature is suitable, if the operation time is too long, the temperature will drop rapidly and the forging process cannot be completed. If the temperature rises, the performance will be destroyed. Therefore, in the forging process, the operator is required to accurately control the deformation temperature.
2. Deformation
The amount of deformation is an important guarantee for obtaining a uniform and finely divided structure. Generally at a suitable temperature, the larger the deformation, the more uniform the organization, the better. For ingots, when the deformation reaches 70% to 80%, the castings will basically be broken. In order to obtain good forgings, the two-phase region must have sufficient fire deformation, and the fire deformation should not be less than 20% each time, in order to obtain good structure and properties.
3. Deformation speed
The higher the deformation speed, the greater the deformation heat generated. Titanium has poor thermal conductivity. Therefore, when the deformation speed is high to a constant speed (such as hammer forging speed), the forging will be locally overheated, resulting in local changes in the structure, or even overburning, resulting in a decrease in the performance of the parts.
The suitable forging deformation speed is: during the deformation process, the temperature of the workpiece does not increase, but does not decrease rapidly, so that the workpiece can obtain sufficient deformation time at a certain temperature, and can also obtain good structure and performance.
From the perspective of deformation speed, the forging hammer speed is too high, the deformation heat generated during forging is very high, and it is easy to cause uneven structure. Therefore, in forging, it is necessary to use experience to master the severity and speed of hammer forging. The deformation speed of the hydraulic press is about 1/30 of that of vertical forging, and the deformation heat generated is much smaller. Easy to get good organization. But the temperature of the workpiece drops quickly, so it must be operated quickly.
The deformation speed of the precision forging machine is between the forging hammer and the hydraulic press, so the workpiece can be kept at a constant temperature for a long time, so as to avoid high heat generation of the workpiece. So for forging titanium, precision forging machine is a better equipment.
In summary, the forging process must strictly control the deformation temperature, deformation amount and deformation speed. Three factors, ignore one of them - one won't get high-quality damage, but in reality the three are affected by many factors. Comprehensively dealing with the relationship between the three is complex and requires a lot of work.
You can post now and register later. If you have an account, sign in now to post with your account.