The specific impact of the in-plane anisotropy titanium plate

1, the inner surface of the impact of sex on the sheet formability
Relative to the plate rolling direction is different in different properties , deformation of the cylindrical -shaped member is formed has become not axisymmetrical , there has been formed on the lug member . In addition to the emergence of the lug forming parts of the shape does not meet the requirements of ( sexual category is conformal ), the extent of allowable deformation is also a disadvantage .
Obviously, cylinder -shaped pieces of lug formed on the emergence of the cylinder is bound to shrink in the direction of the deformation of the cylinder uneven distribution of the large valleys , small lugs place, at the valley are more likely to wrinkle or scissors cut rupture. If the deformation is uniformly distributed , then this could have been avoided wrinkled or broken , or at least playing in some large deformation will occur.
Benli influence on the deformation of the lugs , except the performance outside the valley , it can also reflected in the lug direction ; performance is shaped pieces located on the lug direction , the material at the four corners of the die crack appears . This is due to the sudden wool lug width portion of the force exerted further deformation inevitably also need bigger, when it is large to a certain extent, the largest parts of the force - will die fillet crack .
Of course, non-axisymmetric parts , according to the specific circumstances of the part, select the appropriate cutting position, the nature of the use of the inner surface of the opposite sex ,medical titanium bar it becomes favorable factors , and sometimes can increase the allowable level of distortion.
The inner surface of the opposite sex conformal impact , but also the performance of the bending part . As the inner surface of the anisotropic material , ie the principal strain direction is not always the principal stress directions staff together in nature, so that the line is not bending to the plate and rolled or lateral bending pieces of the same , there has been intuitively seem should not happen wry .
The titanium surface of the opposite sex more significant adverse effects , in terms of setting is particularly prominent . Due to the different properties in different directions , even if the same molding stress , produce different rebound unloading cut , distortion of the shape of the forming member occurs , the original plane is also warped .
2, the influence of the surface of the opposite sex formability of sheet
As mentioned above ,titanium sheet the surface of the opposite sex typical performance is affected by the emergence of curvature force no longer remain flat plane . Obviously , the proper placement of wool during molding , it coincides with the curvature of the curvature formed by the surface of the opposite sex , molded parts will be beneficial to improve the degree of allowable deformation ; contrary, it will reduce the degree of allowable deformation. TCIM 1.5mm thick material such as a clear surface of the opposite sex , when the hole flanging, if the index is slightly thicker side to the opposite sex is part of the inner surface of the flange , then the limit factor than it is in the outer flange surface large 2.8%.