No matter what material is made of, when it exceeds a certain limit of use conditions, it may be deformed or cracked. What should we do when it is deformed or cracked? Is there any way to remedy it? Next, Jinan Handboard Processing Factory will tell you about the remedial measures for the deformation or crack of the handboard model. You can have a look at the contents.
1. After the hand plate is deformed, there is a certain residual stress in it. The stress should be relieved before processing the hand plate. Stress annealing and natural aging can be used to eliminate internal stress.
2. The hot cracks of the hand plate are mostly caused by mechanical stress and are caused by metal solidification. The solution is to improve the hand board structure so that it has less contact with metal. Another way is to control the sulfur content of the metal and increase the thermal brittleness of the metal.
3. The cold crack of the hand plate is the crack of the product at low temperature. This is caused by the deformation of the hand board, which often occurs in the place where the hand board is under tension. The cold crack is generally small, but this kind of crack is irreversible and can only be redone. When making large and thin hand boards, cold cracks often occur. Similarly, the preventive measures are to reduce the internal stress and control the content of phosphorus in the metal.
In addition, the selection of the material of the hand model should not only meet the customer's requirements for product quality, but also take into account the cost of the material and its strength within the set period. Of course, the material should be selected according to the type of the hand model, the working mode, the processing speed, the main failure forms and other factors.
For example, the main failure form of blanking die is edge wear, so it is necessary to select materials with high surface hardness and good wear resistance; Stamping die mainly bears periodic load, which is easy to cause surface fatigue crack and lead to surface peeling, so it is necessary to select materials with good surface toughness; The drawing die shall be made of materials with low friction coefficient.
It can be seen that once deformation and cracks occur in the hand model, remedial measures are very troublesome, and even some deformation and cracks cannot be remedied, which are major defects of the hand model. Therefore, deformation and cracks are mainly preventive measures to avoid deformation and cracks as much as possible. Come to our website for more relevant content http://www.the7streamsdream.com Ask about it!