Color coated galvanized sheet may appear brittle after using for a period of time, which is generally caused by the technology in the process of production and processing, so if you want to avoid this phenomenon, you need to find the reasons in time and
do a good job in prevention. Here is to introduce the reasons for brittle.
1、 The die discharge of color coated galvanized sheet is uneven, resulting in the inconsistency of profile wall thickness and density. This results in the difference of mechanical function between the two sides of the profile. As for the non-standard
profile such as thin wall, there is no more discussion here.
2、 The layout of die section is unreasonable, especially the distribution of inner ribs and the treatment of interface view. It is necessary to improve the planning and eliminate the right
angle and acute angle at the interface.
3、 The cooling rate of the setting die for color coated galvanized sheet. The cooling water temperature often does not lead to enough attention. The role of cooling water is to cool the macromolecular chain
stretched by the profile in time to achieve the purpose of application.
4、 Lack of die pressure. The pressure at the die head is determined by the compression ratio of the die, especially the length of the straight section of the die. If the compression
ratio of die head is too small or the straight section is too short, the finished product will not be fine and dense, which will affect the physical function.
Color coated galvanized sheet in the process of processing, if the operation method is wrong, it is easy to cause quality problems in the future, so in the process of processing, we should pay attention to the correct grasp of the method, ensure
the reasonable planning of the production process, and timely do the corresponding treatment work when there is brittle phenomenon in the process.