Difference between billet, slab and billet
Production process of billet is through three methods: one is through the production of steelmaking and continuous casting equipment system, the molten steel is directly cast into the billet; two of steelmaking production systems of steel ingot or billet by rolling system of steel rolling equipment processing semi-finished products; three is the production of steelmaking system by forging semi-finished steel ingot the processing equipment. Market trends 1, domestic crude steel production remains high, although the domestic steel market has been relatively sluggish in recent times, and steel losses are more, but this does not seem to affect the enthusiasm of steel production. According to the China Steel Association statistics show that: in early April, the daily output of crude steel in key enterprises in China was 1 million 697 thousand and 300 tons, and the average daily output of crude steel in China was estimated at 2 million 123 thousand and 900 tons. And in mid April, crude steel daily output of ten days, although there has been a drop back, but still at a high level. According to statistics, in mid April, the average daily output of crude steel in key enterprises nationwide was 1 million 689 thousand and 100 tons, and the average daily output of crude steel in China was estimated at 2 million 115 thousand and 800 tons. Such a large production and sluggish demand in stark contrast, which is a drag on steel prices down one of the important factors.
Steel billet is a product made by steel-making furnace by casting. The billet can be divided into two kinds from the manufacturing process, mould blank and continuous casting billet. At present, the casting process has been basically eliminated. The classification is mainly divided into two kinds: slab: large cross section, high ratio, mainly used for rolling plate. Billet: cross section width, height equal, or difference is not big, mainly used for rolling steel, wire. Use billet is steel, through processing can be used as mechanical parts, forgings, processing all kinds of steel, steel, Q345B, channel steel, wire is the role of billet. Billet is used for the production of semi-finished steel products, generally can not be used directly for society. Billet and steel are strictly divided into standard, and can not be determined by the final product of the enterprise, but should be carried out according to the uniform standard of the whole society. Usually, billet and steel is relatively easy to distinguish, but for some billets, with the same specification and the same purpose (such as rolling and steel tube), whether for other industries by use, whether through steel processing process, whether after finishing mill processing to distinguish. Continuous cast steel square and rectangular billets are mainly made of plain carbon steel, low carbon and low silicon cold rolled material, high quality carbon structural steel, low alloy high strength steel, special steel and so on.
