Hot-rolled pickling, rolling hard roll, ordinary cold rolling, galvanizing (galvanizing, fingerprint-resistant, hot-dip galvanizing), aluminum-zinc plating, electroplating tin, color coating, electrical steel (silicon steel sheet). 1, hot rolling pickling:
2. Rolling hard rolls: Continuous rolling of hot rolled pickling rolls at normal temperature.
Product features: Because it has not been annealed, its hardness is very high (HRB is greater than 90), and the machining performance is extremely poor. Only a simple directional bending process of less than 90 degrees (perpendicular to the winding direction) can be performed.
Application range:
(1) processing into ordinary cold rolling after annealing;
(2) galvanizing unit with annealing pretreatment device is processed for galvanizing;
(3) Panels that do not require processing at all.
Commonly used steel number CDCM-SPCC (SPCD, SPCE, ST12, ST13, ST14, BLC, BLD, BUSD, BUFD, BSUFD, etc.), but its performance is basically the same.
3. Ordinary cold rolling;
4, galvanized;
5. Aluminum-plated zinc: 55% aluminum and 43.4% zinc and 1.6% silicon are plated onto the surface of the steel plate by a continuous melt plating process.
Features:
(1) It has good durability and has a longer life than galvanized steel sheets;
(2) It has good heat resistance and is less prone to discoloration at high temperatures than galvanized steel sheets;
(3) has good heat reflectivity;
(4) having a silvery white ornate surface;
(5) It has similar processing properties and spraying performance as galvanized steel sheets;
(6) Has good welding performance.
Applications: Highly demanding galvanized sheet industry.
6, electroplating tin (tinplate): using the Frosten-type insoluble anodizing tin process.
7, color coating;
8, electrical steel (silicon steel sheet).
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