why PPGI Steel Coil needs to test adhesion
In the production process of ppgi steel coil, how should we judge the quality of ppgi coil? Testing the adhesion of ppgi steel coil is an important indicator.
This is because the time for the coating adhesion of ppgi steel coil to take effect is affected by the coating performance and the conversion film performance between the coating and the substrate of ppgi coil. The main influencing factors are the quality of the coating and the pretreatment state of the substrate.
At present, the detection method used by various manufacturers is basically to detect the coating adhesion of ppgi steel coil through T-bend test. There is a general understanding in the industry about the aging performance of the coating adhesion of ppgi coil, that is, as the storage time increases, the coating adhesion of ppgi steel coil will rapidly deteriorate, thus affecting the normal use of ppgi coil.
The test results of the T-bend test also confirmed this phenomenon from the experimental data. The experimental data show that the main factors causing the continuous decline in the coating adhesion performance of ppgi steel coil come from moisture, oxygen and ions in the natural environment. They have a slow impact on the quality of ppgi coil, so many customers find that the coating adhesion aging performance is poor after receiving the ppgi steel coil, and even the coating falls off.
In response to this phenomenon, Li Cheung Steel Co., Ltd will try its best to solve the problem according to the following points to ensure that the ppgi steel coil maintains a good adhesion of the coating before it reaches the user, and try to improve the user experience.
Coating system
Use a coating system with excellent quality. Li Cheung Steel Co., Ltd has always used paint brands with good performance such as Nippon and Akzo.
Substrate pretreatment
Pre-treat the surface of the substrate of PPGI steel coil in full accordance with the process of alkaline degreasing → water washing → surface adjustment → water washing → drying → chemical treatment → drying to obtain high-quality coating.
Perfect packaging system
Li Cheung Steel's products are all in standard export packaging without special requirements to avoid excessive exposure of ppgi coil to the external environment.
High production efficiency
Li Cheung Steel Co., Ltd has three advanced color coating production lines with a speed of 180 meters per minute to ensure that ppgi steel coil is delivered to customers within the shortest delivery period.
Transportation efficiency
Shorten the transportation time as much as possible and improve transportation efficiency. Li Cheung Steel's sales staff will select reliable freight forwarders for you and arrange the shipping date as early as possible so that the goods can reach the customer as soon as possible.
After-sales guarantee
If the coating of PPGI Steel Coil falls off after the customer receives the goods, Li Cheung Steel will provide corresponding after-sales service to solve your worries.
Coating system
Use a coating system with excellent quality. Li Cheung Steel Co., Ltd has always used paint brands with good performance such as Nippon and Akzo.
High production efficiency
Li Cheung Steel Co., Ltd has three advanced color coating production lines with a speed of 180 meters per minute to ensure that ppgi steel coil is delivered to customers within the shortest delivery period.
Perfect packaging system
Li Cheung Steel's products are all in standard export packaging without special requirements to avoid excessive exposure of ppgi coil to the external environment.
Transportation efficiency
Shorten the transportation time as much as possible and improve transportation efficiency. Li Cheung Steel's sales staff will select reliable freight forwarders for you and arrange the shipping date as early as possible so that the goods can reach the customer as soon as possible.
