6061 aluminum plate in the production of crack tendency and stress may occur, the following 6061 aluminum plate manufacturers to detail, 6061 aluminum plate crack tendency of the reason.

In the process of solidification and contraction of 6061 aluminum plate, it is easy to produce cracks due to excessive external resistance.The crack tendency is common in aluminum die casting, but the crack tendency is larger in Al-Si and Al-Mg alloys.

The crack has the difference of hot crack and cold crack, observe the crack, the shape is zigzag and irregular, the surface is strongly oxidized, dull for hot crack, the head is cold crack.

Hot cracking is produced in the solidification process of 6061 aluminum plate, that is, most of the 6061 aluminum plate has formed dendrite skeleton began to solidify, but there is still a small amount of liquid in the dendrite, at this time, the line shrinkage of 6061 aluminum plate is large, the thermal strength of 6061 aluminum plate is very low, such as the cast block its shrinkage, shrinkage pressure,When the strain is greater than the 6061 aluminum plate at the temperature of the strength of the 6061 aluminum plate allowable strain, that is, crack.

Cold crack is 6061 aluminum plate in solid shrinkage seriously blocked or by external force, such as falling sand early or mechanical damage in the process of cleaning cold crack.Cold cracking is rare.

When the solidification and cooling process of castings in the mold is blocked, the stress deformation will occur. The stress is within the range of elastic strength, and the residual stress will exist in the castings, reducing the design strength of the castings. The castings will be deformed during the use and processing process, which will affect the accuracy and assembly of the castings.

The castings stress is composed of thermal stress, phase change stress and shrinkage stress.The casting stress of die casting can be eliminated by annealing treatment of natural failure.

The reason for the crack tendency of 6061 aluminum plate is mentioned here. If you want to know the price of 6061 aluminum plate, please contact us.