产品性能
1. Corrosion resistance 耐蚀性
 
- Hot-dip galvanized steel sheet is characterized by protection base metal(Fe) as corrosion resistance of zinc itself and acts effective sacrificed-anodic of zinc.
- 热镀锌产品的特性是通过牺牲保护镀层 Zn ,来保护钢基达到耐腐蚀效果的。
- Chromate treatment : It could improve better corrosion resistance with a condensation reaction by a trivalent chrome compound and net shaped layers by hydrogen bonds to protect zinc coated layer. Especially, chromated layers help corrosion resistance as barrier effect with self healing effect by water-soluble sexivalent chrome and insoluble trivalent chrome.
- 钝化处理:钝化层是3 价铬在 H+ 的作用下通过缩合反应生产混合网状的保护层来保护镀锌层的,特别是钝化层有水溶性的6+ 铬和不溶的3+ 铬的自愈合作用提高了保护Zn镀层的效果;
2. workability 加工性
 
It is characterized by extremely excellent workability due to produced by continuous annealing, temper rolling and after treatment process.
通过退火,平整和后处理以后镀锌钢板具有良好的加工性能;
产品性能等级
硬度
YP
TS
EL
(Hr-B)
(kg/mm2)
(kg/mm2)
(%)
Commercial Quality, CQ
50 ~ 60
25 ~ 35
35 ~ 45
32 ~ 40
Drawing Quality, DQ
45 ~ 55
20 ~ 30
30 ~ 40
36 ~ 44
Deep Drawing Quality, DDQ
30 ~ 40
12 ~ 30
28 ~ 33
42 ~ 50
Structural Quality, SQ
3. Weldability 焊接性能
 
- General hot dip galvanized steel sheet is worse workability than cold rolled steel sheet, but recently it has the same and more than workability with cold rolled steel sheet as advanced facilities and technology.
- 通常镀锌钢板的焊接性能不如冷轧钢板,随着工艺和设备的改进镀锌板的焊接性能已经赶上甚至超过冷轧板。