Production process of hot-dip aluminum-zinc steel plate
A production process and hot-dip aluminum technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of low tensile strength, increase production cost, reduce work efficiency, etc., and achieve shortened annealing. effect of time
Active Publication Date: 2014-08-20
华冠新型材料股份有限公司
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[0002] Continuous hot-dip galvanized steel sheets are widely used in construction, light industry, automobile, agriculture, animal husbandry, fishery and commercial industries. However, currently domestically produced hot-dip galvanized steel sheets are mainly soft due to technological conditions. The strength is not high, and it is not enough to be used in some areas that require relatively high strength, which greatly limits the application and promotion of hot-dip galvanized steel sheets.
In the production process of hot-dip galvanized steel sheets, some manufacturers usually use high-strength structural steel plates as substrates in order to obtain high-strength mechanical properties, and do not change the existing annealing temperature to achieve the mechanical performance requirements of galvanized steel sheets. Diversified procurement of raw materials, inventory backlog, a completely different production process from cold rolling to galvanizing, resulting in increased production costs and reduced work efficiency in each process
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[0019] Such as figure 1 , figure 2 and image 3 As shown, the present invention takes the production of galvanized SGLC570 products, hot-dip galvanized coils with a specification of 0.38*1000mm as an example. The selected raw material is cold-rolled steel plate; the equipment used is a conventional galvanizing unit, including uncoiling equipment, welding machine, cleaning section, improved Sendzimir annealing furnace, plating tank, air knife, rear cooling device, skin pass machine, Tension straightening machine, roller coating machine, infrared drying device and coiling machine; its technological process: coiling-uncoiling (1# and 2# uncoiler work alternately)-shearing (double-layer shearing)-welding-dipping and scrubbing Rinsing and drying (cleaning section) - entrance loop - reduction annealing (annealing furnace) - hot dipping (plating bath) - air knife scraping - air cooling, water quenching cooling (post cooling) - finishing - tension leveling -passivation / fingerprint...
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Abstract
The invention discloses a production process of a hot-dip aluminum-zinc steel plate. The production process is characterized by comprising the steps of 1) using a low-carbon steel cold-hard roll as a cold-rolled steel plate; 2) performing continuous annealing treatment; 3) performing optical finishing treatment; 4) performing withdrawal and straightening treatment. The production process adopts the low-carbon steel cold-hard roll as a base plate, shortens the annealing time by reducing the annealing plate temperature of continuous annealing steel plates, and controls a withdrawal and straightening machine to obtain a high-strength aluminum-zinc plated steel plate with relatively good plate shapes by regulating the rolling force of an optical finisher; the high-strength aluminum-zinc plated steel plate can be applied to high-strength and high-tensile building materials.
Description
technical field [0001] The invention relates to the field of steel strip hot-coating, in particular to a production process of hot-dip aluminum-zinc steel plate. Background technique [0002] Continuous hot-dip galvanized steel sheets are widely used in construction, light industry, automobile, agriculture, animal husbandry, fishery and commercial industries. However, currently domestically produced hot-dip galvanized steel sheets are mainly soft due to technological conditions. The strength is not high, and it is not enough to be used in some areas that require relatively high strength, which greatly limits the application and promotion of hot-dip galvanized steel sheets. In the production process of hot-dip galvanized steel sheets, some manufacturers usually use high-strength structural steel plates as substrates in order to obtain high-strength mechanical properties, and do not change the existing annealing temperature to achieve the mechanical performance requirements of...
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IPC IPC(8): C21D8/02C21D1/26C23C2/40C23C2/12
Inventor 刘克勤肖忠瑜郑东蓝俊董秋华
Owner 华冠新型材料股份有限公司
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