阅读说明：本技术 一种不锈钢复合板的制备方法 (Preparation method of stainless steel composite board ) 是由 顾芹芹 于 2020-05-26 设计创作，主要内容包括：本发明公开了一种不锈钢复合板的制备方法,涉及金属材料加工领域,本发明的目的在于解决现有金属复合板的爆炸复合和抽真空热轧制复合方法,爆炸复合比较危险,已逐步淘汰,热轧制复合是由两块不同材料上下相叠,行成复合坯,抽真空,复合坯的环周设置镶条,形成初坯,用压力焊对初坯进行焊接,将焊接坯体送入加热炉中,加热至1100℃—1200℃后,用高压水除磷,再进行轧制、矫直,再将焊接坯体切边等工序,严重污染环境,节能减排不达标。本发明制备不锈钢复合板,不需要抽真空,不需要高污染排放设备,能够有效减少成本投入,同时提高生产效率,满足节能减排政策,缩短生产周期,降低不锈钢复合板的生产成本。(The invention discloses a preparation method of a stainless steel composite plate, which relates to the field of metal material processing and aims to solve the problems that the conventional explosion cladding and vacuum-pumping hot rolling cladding method of the metal composite plate is dangerous and is gradually eliminated, the hot rolling cladding is realized by overlapping two different materials from top to bottom to form a composite blank, vacuumizing is performed, an inlaid strip is arranged on the periphery of the composite blank to form an initial blank, the initial blank is welded by pressure welding, the welded blank is sent into a heating furnace, heated to 1100-1200 ℃, phosphorus is removed by high-pressure water, rolling and straightening are performed, the procedures of trimming the welded blank and the like are performed, the environment is seriously polluted, and the energy conservation and emission reduction are not up to the standard. The stainless steel composite board prepared by the method does not need to be vacuumized and high-pollution emission equipment, can effectively reduce the cost investment, simultaneously improves the production efficiency, meets the policy of energy conservation and emission reduction, shortens the production period and reduces the production cost of the stainless steel composite board.)

1. A preparation method of a stainless steel composite plate is characterized by comprising the following steps of (1) scrubbing raw materials of a 304 stainless steel plate (upper and lower compound layers) with the thickness of 0.5mm and a common carbon steel plate (base material) with the thickness of 6mm by using 85-DEG alkaline pure water, further washing by using the pure water, drying by blowing, degreasing the surface of the stainless steel plate, and drying for later use; (2) polishing the base material by a polishing machine set to increase the roughness of the upper surface and the lower surface of the base material, polishing the first composite surface by taking the bottom surface of the upper composite layer stainless steel as a first composite surface, and polishing the second composite surface by taking the top surface of the lower composite layer stainless steel as a second composite surface; (3) placing the base material between the upper stainless steel clad layer and the lower stainless steel clad layer to contact with each other to form a composite blank, wherein the thickness of the upper clad layer is 0.5mm, and the thickness of the lower clad layer is 0.5 mm; (4) the composite blank is formed at one step by high-pressure cold rolling equipment at normal temperature to realize the crystal structure refinement of two materials, the crystal recombination and fusion between different materials are realized by the atom exchange between the crystal structures on a joint surface, and the physical material composition is achieved (5) the prepared composite material is subjected to diffusion annealing, finish rolling, softening, straightening, surface treatment and shearing to obtain the product.

2. The method of manufacturing a stainless steel composite panel according to claim 1, wherein: in the step (1), raw materials of a 304 stainless steel plate (upper and lower multiple layers) with the thickness of 0.5mm and a common carbon steel plate (base material) with the thickness of 6mm are flushed and scrubbed by 85-degree alkaline pure water, brushed and rinsed by 65-degree pure water, so that the surfaces of the two raw materials are degreased without damaging a membrane, and then are dried, so that the surfaces of the raw materials are dry and free of dirt. And (3) RO: less than 5 mu S/cm, and the ratio of the degreasing agent to the pure water is 0.02-0.05: 1.

3. The method of manufacturing a stainless steel composite panel according to claim 2, wherein: in the step (2), the base material is straightened by the straightening machine and simultaneously fed to a polishing machine set to be polished together with the upper and lower clad materials, so that the upper and lower surfaces of the base material have process roughness, then the bottom surface of the upper clad stainless steel layer is used as a first clad surface, the first clad surface is polished, and simultaneously the top surface of the lower clad stainless steel layer is used as a second clad surface, and the second clad surface is polished. The roughness of the process is 0.9um-1.5 um.

4. The method of manufacturing a stainless steel composite panel according to claim 3, wherein: in the step (3), the base material is placed between the upper and lower clad layers of the stainless steel plate and contacted with each other to form a composite blank, the base material is 6mm common carbon steel, the upper clad layer is 0.5mm304 stainless steel, and the lower clad layer is 0.5mm304 stainless steel.

5. The method of manufacturing a stainless steel composite panel according to claim 4, wherein: in the step (4), the composite blank is formed at one time by high-pressure cold rolling equipment at normal temperature, the rolling force of the equipment is 2400 tons, the roll temperature is controlled at 200 ℃, and the deformation rate is more than or equal to 70 percent. The crystal structures of the two materials are refined, and crystal recombination and fusion among different materials are realized through atom exchange among the crystal structures at a joint surface, so that material composition in a physical sense is realized.

6. The method of manufacturing a stainless steel composite panel according to claim 5, wherein: in the step (5), the prepared composite coiled material is subjected to continuous diffusion annealing at 950 ℃ and 4m/min to refine the crystal structure of the joint surface of the two materials, so that the two materials are completely fused, then the composite coiled material is subjected to finish rolling to the thickness required by the process, and after a product with the required thickness is obtained, the product is subjected to continuous softening annealing at 1040 ℃, then is subjected to leveling, straightening, surface treatment and then shearing, so that the product is obtained.

Background

As a novel material, the stainless steel composite plate not only has the advantages of strong corrosion resistance, good wear resistance, attractive appearance, durability, easy forming and the like of stainless steel, but also has good weldability, formability, drawability and thermal conductivity of carbon steel, and simultaneously has low cost, strong adaptability and wide application range. Stainless steel clad plates are generally made of stainless steel as a clad layer and carbon steel or alloy steel as a base layer. The corrosion resistance of the product can be ensured by the stainless steel compound layer, and the strength of the product can be ensured by the base layer. The stainless steel composite plate can effectively reduce cost, save precious metals such as nickel and chromium, meet the national policy of energy conservation and emission reduction, and is beneficial to sustainable development of resources.

A composite method of explosion cladding rolling and vacuum-pumping hot rolling of metal composite plate, the explosion cladding is dangerous and is eliminated gradually, the hot rolling is overlapped from top to bottom by two different materials to form a composite blank, the method includes the following steps (a) using the plate for pressure container as the base plate, processing a peripheral conduction angle groove on the periphery of the single surface of the base plate, the peripheral size of the stainless steel plate is smaller than the peripheral conduction angle groove size; (b) drilling, namely drilling a right-angle hole between two adjacent surfaces of the bevel groove of the substrate to serve as a vacuumizing hole; (C) pre-butt welding, namely, flatly laying a stainless steel plate on the surface of the bevel groove of the base plate, flatly laying a brazing flux layer between the stainless steel plate and the bevel groove of the base plate, and then, on a pressure platform, carrying out circumferential sealing welding on the joint of the periphery of the stainless steel plate and the base plate to form a pre-blank; (d) vacuumizing, namely vacuumizing through a substrate right-angle hole, and plugging a right-angle orifice after vacuumizing; (e) a step of blank combination and seal welding, which is to combine the stainless steel surfaces of the two preposed blank materials, lay a high-temperature anti-sticking agent layer between the two preposed blank materials, spot-weld partition plates with equal peripheral length on the four peripheries of the two stainless steel plates, and perform submerged arc welding and seal welding in a cavity with a quadrangular trapezoidal section formed between the two bevel grooves and the partition plates to form a composite plate blank; (f) drilling holes, namely symmetrically drilling a plurality of air holes on the seal welding ring frame and the separation plate; (g) and (3) hot rolling, namely preheating the composite plate blank to 1000-1300 ℃, and then entering a hot rolling mill for rolling and forming. The vacuum rolling method needs to drill a right-angle hole on a substrate, perform front butt welding, vacuumize through the right-angle hole, and finally perform blank closing and sealing welding. In the method, the time required for vacuumizing is longer, and the requirement on vacuumizing equipment is higher. The hot rolling method is characterized in that a composite plate blank is preheated to 1000-1300 ℃ and then enters a hot rolling mill for rolling and forming, iron scales are easily generated on the surface of a substrate at high temperature, and the surface of a hot rolled steel product is rough and has large size fluctuation, so that the environmental pollution is serious, and a method capable of saving energy and reducing emission policy and shortening the production period of a stainless steel composite plate is urgently needed at present.

The invention content is as follows:

the invention aims to provide a composite method of explosion cladding rolling and vacuumizing hot rolling aiming at the existing metal composite plate. Explosive cladding rolling is dangerous and is gradually eliminated, vacuum-pumping hot rolling is carried out for cladding, the required vacuum-pumping time is long, the requirement on vacuum-pumping equipment is high, the production period of the composite plate is long, and the environment is seriously polluted by the vacuum-pumping hot rolling method.

Further provides a preparation method of the stainless steel composite plate. The stainless steel composite board prepared by the method does not need to be vacuumized and high-pollution emission equipment, can effectively reduce cost investment, simultaneously improves production efficiency, meets the policy of energy conservation and emission reduction, shortens production period and reduces production cost of the stainless steel composite board.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for preparing stainless steel composite board includes such steps as flushing the raw materials (upper and lower multiple layers) of 304 stainless steel plate (0.5 mm) and 6mm ordinary carbon steel plate (substrate) with 85-degree alkaline pure water, brushing, and rinsing with 65-degree pure water to remove the surface of both raw materials without damaging the surface of leather membrane, and drying. And (3) RO: less than 5 mu S/cm, and the ratio of the degreasing agent to the pure water is 0.02-0.05: 1; (2) the base material is straightened by a straightening machine and simultaneously fed to a polishing machine set to be polished together with the upper and lower clad materials, so that the upper and lower surfaces of the base material obtain process roughness, then the bottom surface of the upper clad stainless steel layer is used as a first composite surface, the first composite surface is polished, and simultaneously the top surface of the lower clad stainless steel layer is used as a second composite surface, and the second composite surface is polished. The process roughness is 0.9um-1.5 um; (3) placing a base material between an upper cladding layer and a lower cladding layer of a stainless steel plate to be contacted with each other to form a composite blank, wherein the base material is 6mm common carbon steel, the upper cladding layer is 0.5mm304 stainless steel, and the lower cladding layer is 0.5mm304 stainless steel; (4) the composite blank is formed at one step by high-pressure cold rolling equipment at normal temperature, the rolling force of the equipment is 2400 tons, the roll temperature is controlled at 200 ℃, and the deformation rate is more than or equal to 70 percent. The crystal structures of the two materials are refined, and crystal recombination and fusion among different materials are realized through atom exchange among the crystal structures on a joint surface, so that material composition in a physical sense is realized; (5) and (3) refining the crystal structure of the combined surface of the two materials by continuous diffusion annealing at 950 ℃ and 4m/min to realize the complete fusion of the two materials, then finish rolling to the thickness required by the process, and after obtaining a product with the required thickness, continuously softening and annealing at 1040 ℃, flattening, straightening, surface treating and then shearing to obtain the product.

The stainless steel composite plate is prepared without vacuumizing or high-temperature hot rolling, so that the investment of equipment can be effectively reduced, the production efficiency is improved, the production period is shortened, the environmental pollution is reduced, and the production cost of the stainless steel composite plate is reduced.

The above examples are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.