Manufacture technology for anti-corrosion, low-cost, refined and environment-friendly stainless steel wire

Abstract

The invention discloses a manufacture technology for an anti-corrosion, low-cost, refined and environment-friendly stainless steel wire. The manufacture technology comprises the technological steps that ingredients including ferrochrome and ferronickel are used; the ingredients are successively put into an electric arc furnace for heating and melting; contents of each of the elements are detected,and temperature preservation is conducted during detection; each of the chemical ingredients is adjusted again according to detection results; then, slagging is conducted; and slagging-off and steeltapping are carried out when a furnace temperature reaches 1650 DEG C; a spiral flow duct of which the height is lower than the bottom wall of a furnace cavity is disposed at an outlet of the electricarc furnace; the detected elements include C, Si, Mn, Cr, Ni, P and S; after entry of molten steel in a primary forging furnace, a mixed gas of Ar (N2) + O2 is blown into the furnace, the content ofN is detected, and a blowing process is divided into an oxidation stage, a reduction stage and a refinement stage; continuous casting is carried out; and the wire is manufactured after continuous rolling. The manufacture technology disclosed by the invention has the beneficial effects that the molten steel with the uniform ingredients can be obtained through opening or closing of a molten steel valve during molten steel taking, so accuracy of the detection results is increased, cost is reduced and production efficiency is increased; and on the premise that stainlessness is not reduced, the content of Ni is reduced, but a corrosion resisting rate is increased.

Description

technical field [0001] The invention relates to a manufacturing process of corrosion-resistant and low-cost refined environment-friendly stainless steel wire. Background technique [0002] At present, the method of producing stainless steel at home and abroad is basically to use the thick nickel alloy block and chromium-iron alloy block produced by the submerged arc furnace as the main raw material. Since the raw material is a solid cold material, it needs to be melted again in the electric arc furnace. The refining furnace is mixed with other raw materials in a certain proportion. After decarburization, dephosphorization and other processes, oxidation and final refining are carried out to complete the adjustment of liquid alloy composition and temperature, and finally become stainless steel. There are many production links, the product takes a long time to become a product, and the cost is high. Increased investment in equipment (coarse nickel alloy and ferrochrome alloy ca...

AI Technical Summary

Problems solved by technology

However, nickel metal is a scarce and expensive material. About 60% of the world's nickel production is used to produce stainless steel. The cost and selling price of stainless steel often fluctuate with the rise and fall of nickel prices. In recent years, nickel price fluctuations have been particularly Large, seriously affecting the production and sales of stainless steel, how to develop stainless steel wire with reduced Ni content but improved corrosion resistance is very necessary; in addition, in the process of preparing stainless steel wire, it is necessary to detect the content of each element, which requires stopping the equipment , take out part of the molten steel and check it after cooling. During the process of taking molten steel, you must stop the relevant equipment and keep the electric arc furnace warm, which not only increases the production cost, but also reduces the production efficiency. A certain amount of molten steel is taken from the part and then mixed and tested