Category: PPGI prepainted galvanized steel coil
By Alisajpq, 2019-05-31
At the end of 2012, Hengze PPGI prepainted galvanized steel coil coating business division successfully developed xizi Otis and Chongqing Otis elevator rolls, and the stable supply of nearly 10,000 tons within a year, becoming the largest elevator rolls supplier of Otis. In September 2013, signed the first batch of elevator volume orders with Tianjin Otis, and mass produced the products on a monthly basis. Shanghai Otis has also carried out close cooperation with Hengze color coating business department since 2013. In recent years, in addition to Otis, constant ze in the elevator industry also has an in-depth cooperation with many well-known brands at home and abroad, including deo elevator, Suzhou, matt yunda Toshiba, Guangzhou, Shenyang, Shanghai Fuji, etc., some of the elevator factory orders are already on a monthly production, some elevator manufacturers also have entered the stage of batch manufacture. Hengze is looking forward to cooperating with more elevator industry leaders in the future to jointly promote the new environment-friendly material -- high quality PPGI prepainted galvanized steel coil in the elevator.
Compared with cold-rolled powder spraying roll (after spraying roll), the advantages of PPGI prepainted galvanized steel coil (pre-spraying roll) lie in the following five points:
1. Environment-friendly processing:
The national requirements for environmental protection are more and more strict, after the powder spraying process is replaced by the color coating process is the trend, change to the color coating coil can eliminate the powder spraying produced by the exhaust gas, wastewater, and even completely abandon the powder spraying line, and Hengze elevator with PPGI prepainted galvanized steel coil has passed the environmental ROHS verification, is a real green environmental protection product.
2. Production capacity is effectively released:
Because the elevator is sent to the processing workshop for the flat, cut size coil, so the post-processing process is omitted, can be directly bent, assembled as a finished door or cage coil, capacity can be greatly increased.
3. Better anti-corrosion durability:
Traditional cold rolling powder spray roll is single-layer spraying, easy to corrosion and cracking; The PPGI prepainted galvanized steel coil is multi-layer coating high-temperature curing, the surface adhesion is stronger, the durability is more superior, the use of many years will not appear shell, crack, peeling powder roll easy to appear defects.
4. More uniform coating thickness:
After the coating roll surface uneven, uneven thickness, PPGI prepainted galvanized steel coil can be strictly controlled according to customer requirements, the back film thickness, and coating density is better.
5. The protective film fits more tightly:
Due to the graininess of the surface, the protective film cannot fit tightly on the roll, which is prone to blister, wrinkle, and other defects. In the process of assembling the elevator, the protective film is easy to break and fall off, so the purpose of protecting the roll cannot be achieved. Hengze elevator with low cost PPGI prepainted galvanized steel coil has a mirror coating effect, added to the PPGI prepainted galvanized steel coil production process to make the protective film closer to the roll, not only will not affect the bending and other processing processes, but also can protect the roll from damage in the process of processing and assembly.
Service and outlook:
With the increasingly strict environmental protection requirements in China, it is becoming more and more obvious to develop and replace the environmentally harmful coating technology elevator roll with the environmentally harmless coating technology elevator roll. In order to keep pace with The Times, the business department of hengze cheap PPGI prepainted galvanized steel coils has developed and improved new functions of elevator rolls, forming a series of specifications and varieties of elevator rolls from practical type to European standard high-grade environmental protection type, which can meet the needs of different customers.
By Alisajpq, 2019-05-08
The difference in the preparation of the salt spray test chamber samples greatly affected the reproducibility of the test results of cheap PPGI prepainted galvanized steel coil. Therefore, you should pay attention to the correct treatment method, or adopt a processing mode negotiated by both parties to reduce the difference of test results. The main points worth noting are the following two points:
Surface quality: During the sampling or sample preparation process, the coating should be scratched or the surface should have obvious defects, which will affect the test results.
Scratch condition: When the color-coated sample is broken, the selection of the scribing tool, the depth and geometry of the scratch will affect the test results. Therefore, it is especially important to use a special scribing tool.
For the depth of the scratch, the provisions in both standards require that the coating be scratched. Since most of the substrates used in the PPGI prepainted galvanized steel coil is hot-dip galvanized sheet, the galvanized layer can be drawn according to standard requirements without special provisions. However, in the operation, since the scale is not well controlled, it is recommended to adopt a method of negotiating by both parties, and the scratch depth is defined as penetrating the plating layer so that the scribe line is a uniform bright line without burrs to avoid scribe lines. Different conditions have an impact on the consistency of test results.