Causes of short life and serious damage of Diamond Drawing Dies
Causes of short life and serious damage of Diamond Drawing Die
1、Improper use of Diamond Dies wire drawing in the drawing process leads to rapid wear of the dies
1.Too large wire drawing compression rate leads to cracks or breakage of the diamond drawing dies.Most of the cracks or fracture lines are caused by the release of internal stress.
In any material structure,the existence of internal stress is inevitable.The internal stress generated during wire drawing can enhance the microcrystalline structure of the dies.
However,when the wire drawing compression ratio is too large and the temperature rise is too high,part of the material on the surface of the dies will be removed,and the internal stress of the microcrystalline structure will be greatly increased,making it easier to crack or break.
2.The asymmetry between the drawing axis of wire rod and the center line of die hole results in uneven internal stress effect on wire rod and wire drawing die,and the impact of mechanical vibration will also cause high stress peak value on wire rod and wire drawing dies,both of which will accelerate the wear of die.
The uneven hardness of wire caused by uneven annealing is easy to lead to premature fatigue damage of diamond drawing die,forming annular groove and aggravating wear of dies hole.
3.The surface of wire rod is rough,and the oxide layer,sand or other impurities on the surface will make the die wear too fast.When the wire passes through the die hole,the hard and brittle oxide layer and other adhering impurities will cause the die hole to wear and scratch the wire surface as abrasive.
4.Poor lubrication or metal debris impurities in lubricating oil lead to mold wear.If the lubrication is not smooth,the surface temperature of dies hole will rise too fast,the diamond grains will fall off and the die will be damaged.
When the lubricating oil is not clean,especially contains metal debris falling off during drawing,it is very easy to scratch the surface of die and wire rod.
2、The quality factors of diamond dies wire drawing lead to rapid wear of die
1.The unsymmetrical inlay between the diamond dies blank and the die steel sleeve,the uneven distribution of the inlaid cemented carbide steel sleeve or the gap are easy to cause U-shaped cracks in the process of wire drawing.
2.Unreasonable pass design of diamond wire drawing dies,too small opening of inlet lubrication area and too long setting area will lead to poor lubrication,resulting in wear and even fragmentation of PCD Wire Drawing Dies.
3.In the process of laser drilling,if the sintering traces are not cleaned up or heated unevenly,the metal catalysts and binders in the diamond layer will gather into a pile,which is easy to lead to pits in the die during wire drawing.
Causes of short life and serious damage of Diamond Drawing Die
1、Improper use of Diamond Dies wire drawing in the drawing process leads to rapid wear of the dies
1.Too large wire drawing compression rate leads to cracks or breakage of the diamond drawing dies.Most of the cracks or fracture lines are caused by the release of internal stress.
In any material structure,the existence of internal stress is inevitable.The internal stress generated during wire drawing can enhance the microcrystalline structure of the dies.
However,when the wire drawing compression ratio is too large and the temperature rise is too high,part of the material on the surface of the dies will be removed,and the internal stress of the microcrystalline structure will be greatly increased,making it easier to crack or break.
2.The asymmetry between the drawing axis of wire rod and the center line of die hole results in uneven internal stress effect on wire rod and wire drawing die,and the impact of mechanical vibration will also cause high stress peak value on wire rod and wire drawing dies,both of which will accelerate the wear of die.
The uneven hardness of wire caused by uneven annealing is easy to lead to premature fatigue damage of diamond drawing die,forming annular groove and aggravating wear of dies hole.
3.The surface of wire rod is rough,and the oxide layer,sand or other impurities on the surface will make the die wear too fast.When the wire passes through the die hole,the hard and brittle oxide layer and other adhering impurities will cause the die hole to wear and scratch the wire surface as abrasive.
4.Poor lubrication or metal debris impurities in lubricating oil lead to mold wear.If the lubrication is not smooth,the surface temperature of dies hole will rise too fast,the diamond grains will fall off and the die will be damaged.
When the lubricating oil is not clean,especially contains metal debris falling off during drawing,it is very easy to scratch the surface of die and wire rod.
2、The quality factors of diamond dies wire drawing lead to rapid wear of die
1.The unsymmetrical inlay between the diamond dies blank and the die steel sleeve,the uneven distribution of the inlaid cemented carbide steel sleeve or the gap are easy to cause U-shaped cracks in the process of wire drawing.
2.Unreasonable pass design of diamond wire drawing dies,too small opening of inlet lubrication area and too long setting area will lead to poor lubrication,resulting in wear and even fragmentation of PCD Wire Drawing Dies.
3.In the process of laser drilling,if the sintering traces are not cleaned up or heated unevenly,the metal catalysts and binders in the diamond layer will gather into a pile,which is easy to lead to pits in the die during wire drawing.
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