Factors Affecting the Service Life of Bending Machine Dies
1. Die Structure
The rationalization of die structure is the reason for increasing the upper limit of die load capacity and reducing the level of thermal and mechanical loads on the die. For example, the design of die guidance is helpful in avoiding mutual abrasion between the punch and the die. Similarly, for cold heading and cold extrusion dies that withstand high-strength loads, they are very sensitive to stress concentration when the cross-sectional dimensions of the load-bearing parts change. Therefore, whether the treatment of cross-sectional dimension changes is reasonable will directly affect the service life of the die.
2. Die Material
The quality of die material can potentially cause defects in the processing technology and affect the load-bearing capacity during operation. Necessary measures should be taken to compensate for the deficiencies in metallurgical quality in order to improve the die's lifespan.
3. Die Processing Quality
Defects during the processing of parts, as well as pre-processing, forging, and quenching and hardening, and surface treatment, will significantly affect the wear resistance, anti-biting ability, and anti-fracture ability of the die. For example, defects such as surface roughness, residual tool marks, micro-cracks from electrical discharge machining, and surface decarburization and carburization during heat treatment will all have an impact on the load-bearing capacity and lifespan of the die.
4. Die Operating Conditions
During die operation, the precision and rigidity of the equipment used, lubrication conditions, pre-processing status of the processed material, preheating and cooling conditions of the die, and other factors will affect the die's lifespan. For example, precision stamping of thin materials is particularly sensitive to the accuracy and rigidity of the press, requiring the selection of high-precision and high-rigidity presses to achieve good results.
5. Condition of the Product Parts
The surface quality, material hardness, elongation, and dimensional accuracy of the processed parts have a direct relationship with the die's lifespan. For instance, when forming special alloy materials with a nickel content fraction of 80%, severe biting between the work surface and the die surface can occur, resulting in work surface biting and affecting the normal operation of the die.
1. Die Structure
The rationalization of die structure is the reason for increasing the upper limit of die load capacity and reducing the level of thermal and mechanical loads on the die. For example, the design of die guidance is helpful in avoiding mutual abrasion between the punch and the die. Similarly, for cold heading and cold extrusion dies that withstand high-strength loads, they are very sensitive to stress concentration when the cross-sectional dimensions of the load-bearing parts change. Therefore, whether the treatment of cross-sectional dimension changes is reasonable will directly affect the service life of the die.
2. Die Material
The quality of die material can potentially cause defects in the processing technology and affect the load-bearing capacity during operation. Necessary measures should be taken to compensate for the deficiencies in metallurgical quality in order to improve the die's lifespan.
3. Die Processing Quality
Defects during the processing of parts, as well as pre-processing, forging, and quenching and hardening, and surface treatment, will significantly affect the wear resistance, anti-biting ability, and anti-fracture ability of the die. For example, defects such as surface roughness, residual tool marks, micro-cracks from electrical discharge machining, and surface decarburization and carburization during heat treatment will all have an impact on the load-bearing capacity and lifespan of the die.
4. Die Operating Conditions
During die operation, the precision and rigidity of the equipment used, lubrication conditions, pre-processing status of the processed material, preheating and cooling conditions of the die, and other factors will affect the die's lifespan. For example, precision stamping of thin materials is particularly sensitive to the accuracy and rigidity of the press, requiring the selection of high-precision and high-rigidity presses to achieve good results.
5. Condition of the Product Parts
The surface quality, material hardness, elongation, and dimensional accuracy of the processed parts have a direct relationship with the die's lifespan. For instance, when forming special alloy materials with a nickel content fraction of 80%, severe biting between the work surface and the die surface can occur, resulting in work surface biting and affecting the normal operation of the die.
