Manufacturing method for producing single face stainless steel composite plate by adopting hot continuous rolling set

Abstract

The invention relates to a manufacturing method for producing a single face stainless steel composite plate by adopting a hot continuous rolling set, belonging to the technical field of steel rolling. The technical scheme comprises that: a high temperature rapid sintering method is used for heating a composite plate blank, heating temperature is controlled to be 1180-1280 DEG C, uniform heating time is 15-60 minutes, and surface temperature difference between a furnace gas temperature control base plate and a composite plate is adjusted to be 5-30 DEG C; rolling speed ratio of a rough rolling working roll is regulated to be 1.04-1.3 to obtain good shape; and a controlled rolling and cooling process comprises that finish rolling temperature is controlled to be 830-920 DEG C, cooling speed after rolling is 5-30 DEG C per second and coiling temperature is 50-680 DEG C, thus the stainless steel plate with good comprehensive performance is obtained. By adopting the manufacturing method provided by the invention, direct hot rolling on the singe face stainless steel composite plate is realized on a common hot continuous rolling set, production technological process is short, cost on labour, material and place can be saved, production cost of the composite plate is greatly reduced, production efficiency is obviously improved, and a production process is pollution-free.

Description

technical field [0001] The invention relates to a method for producing a single-sided stainless steel clad plate by a hot continuous rolling mill, and belongs to the technical field of steel rolling. Background technique [0002] At present, there are two main methods for industrial production of stainless steel clad plates, the explosive clad method and the direct hot rolling clad method. Among them, the explosion method uses the impact of the detonation wave generated by the explosion of the explosive to cause the metal to be composited and the base metal to collide with each other, thereby realizing the welding of the two metals; this method can generally only produce clad layers with a thickness of 2 to 16 mm. For thick single-sided stainless steel composite panels, this method can only be used to produce thicker stainless steel composite panels due to the thicker cladding. At the same time, due to the serious environmental pollution during the explosion process, this me...

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Problems solved by technology

However, the hot rolling method is used to produce single-sided stainless steel composite panels, because the base layer and the cladding layer are composed of two stainless steels and substrates (common carbon steel or low alloy steel) with different deformation resistance and thermal expansion coefficient. The uneven deformation of different materials will cause serious "warping" or "buckling", which will affect the normal biting of the rolling mill and cause the rolling process to be forced to stop, making hot rolling production extremely difficult

For the production of single-sided stainless steel clad plate, the Chinese Patent Publication No. is the patent document of CN 101015835, relates to a kind of production method of stainless steel clad plate, described single-sided stainless steel / carbon steel or low-alloy steel clad plate production, its main technology The plan is to produce single-sided stainless steel clad slabs by explosive method, grind the surface roughness of the single-sided stainless steel clad layer of the above slab to Ra≤25, spray a layer of release agent evenly on the polished stainless steel clad layer, and dry in the shade Finally, the two slabs are stacked together and welded, then heated and hot-rolled, and finally the hot-rolled slab is trimmed and separated into two stainless steel clad plates; because this manufacturing method requires a single-sided stainless steel clad plate Grinding the surface of stainless steel cladding, spraying release agent, stacking and welding two slabs, trimming and separating after rolling, so the production process of this method is complicated, and the production cost is high and the production efficiency is low

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