阅读说明：本技术 一种生产双面不锈钢复合板用组合坯及其组坯方法 (Combined blank for producing double-sided stainless steel composite board and assembling method thereof ) 是由 刘国林 于 2019-08-22 设计创作，主要内容包括：本发明提供一种生产双面不锈钢复合板用组合坯及其组坯方法,所述组合坯包括下覆板和上覆板,所述下覆板和上覆板之间设置有基板；所述基板的外侧周边设置有连接钢板,所述连接钢板位于下覆板和上覆板之间,所述连接钢板外侧的上边沿与上覆板焊接在一起,所述连接钢板外侧的下边沿与下覆板焊接在一起；上覆板、下覆板,以及连接钢板组成一密封的箱体结构。本发明的组合坯通过连接钢板将上、下覆板连在一起,组成一密封的箱体型组合坯,可用于生产双面不锈钢复合板,且该组合坯能够在低温(200-400℃)下进行加热抽真空去水去气,同时由于覆板和连接钢板组成了一个箱体,在水平方向上可以自由膨胀,从而保证了组合坯在加热炉加热时的平整性。(The invention provides a combined blank for producing a double-sided stainless steel composite plate and a blank assembling method thereof, wherein the combined blank comprises a lower covering plate and an upper covering plate, and a substrate is arranged between the lower covering plate and the upper covering plate; the periphery of the outer side of the base plate is provided with a connecting steel plate, the connecting steel plate is positioned between the lower covering plate and the upper covering plate, the upper edge of the outer side of the connecting steel plate is welded with the upper covering plate, and the lower edge of the outer side of the connecting steel plate is welded with the lower covering plate; the upper covering plate, the lower covering plate and the connecting steel plate form a sealed box body structure. The upper and lower covering plates are connected together by the combined blank through the connecting steel plate to form a sealed box-shaped combined blank which can be used for producing double-sided stainless steel composite plates, the combined blank can be heated, vacuumized, dewatered and degassed at low temperature (200-400 ℃), and meanwhile, the covering plates and the connecting steel plate form a box body which can freely expand in the horizontal direction, so that the flatness of the combined blank when the combined blank is heated by a heating furnace is ensured.)

1. The combined blank for producing the double-sided stainless steel composite board is characterized by comprising a lower clad plate and an upper clad plate, wherein a substrate is arranged between the lower clad plate and the upper clad plate; the periphery of the outer side of the base plate is provided with a connecting steel plate, the connecting steel plate is positioned between the lower covering plate and the upper covering plate, the upper edge of the outer side of the connecting steel plate is welded with the upper covering plate, and the lower edge of the outer side of the connecting steel plate is welded with the lower covering plate; the upper covering plate, the lower covering plate and the connecting steel plate form a sealed box body structure.

2. The unitized blank for producing a double-sided stainless steel composite panel according to claim 1, wherein said upper and lower skin panels are the same size, said upper and lower skin panels have a thickness less than the thickness of said substrate, and said upper and lower skin panels have a length and width greater than the length and width of said substrate, respectively.

3. The unitized blank for producing a double-sided stainless steel composite panel according to claim 2, wherein said substrate has a thickness 5 to 100 times that of said upper and lower skin plates.

4. The composite slab for producing double-sided stainless steel composite plates according to claim 3, wherein the width of the connecting steel plate is the same as the thickness of the substrate, and the width of the connecting steel plate is 60-980 mm.

5. The composite blank for producing a double-sided stainless steel composite panel according to claim 1, wherein brazing materials are respectively disposed between the base plate and the upper clad plate and between the base plate and the lower clad plate.

6. The unitized blank for producing a double-sided stainless steel composite panel according to claim 1, wherein said upper skin panel and said lower skin panel are made of stainless steel or a non-ferrous metal.

7. the composite blank for producing a double-sided stainless steel composite panel according to claim 1, wherein the substrate is made of carbon steel or low-grade stainless steel.

8. The composite slab for producing a double-sided stainless steel composite panel according to claim 7, wherein the connecting steel plate is made of the same material as the base plate.

9. A method of assembling a unitized blank for producing a double-sided stainless steel composite panel according to any one of claims 1 to 8, said method comprising:

Sequentially laying a lower clad plate, a base plate and an upper clad plate from bottom to top;

Arranging connecting steel plates around the outer side of the substrate;

And welding the upper edge of the outer side of the connecting steel plate and the upper covering plate together, and welding the lower edge of the outer side of the connecting steel plate and the lower covering plate together, so that the upper covering plate, the lower covering plate and the connecting steel plate form a sealed box body structure.

10. The method of assembling a unitized blank for producing a double-sided stainless steel composite panel of claim 9, further comprising:

Before laying the base plate, and before laying the upper covering plate, respectively laying a layer of brazing material on the lower covering plate and on the base plate.

Technical Field

The invention relates to the technical field of composite materials, in particular to a combined blank for producing a double-sided stainless steel composite plate and a blank assembling method thereof.

Background

The materials on the market are various, but the performances, advantages and disadvantages of various single materials are different, for example, carbon steel materials are easy to rust, the alkali resistance, acid resistance and heat insulation performance are poor, the service life of the materials is short, the quality of products is directly influenced, and chemical pollution is generated when the coatings are directly sprayed on the outside, so that the environment is not protected; in addition, some materials have insufficient strength and cannot meet the requirements of related application fields, so that some composite materials are required to meet the use requirements, for example, the composite materials such as stainless steel composite plates can meet the requirements of strength, corrosion resistance and the like.

However, the existing manufacturing process of the stainless steel composite plate is only suitable for manufacturing single-sided stainless steel composite plates, such as a utility model patent with the patent number of ZL201620541825.9 and an invention patent with the application number of 201310170414.4; the produced single-sided stainless steel composite plates are all single-sided stainless steel composite plates, welding seams are required to be welded flatly and fully, and the overall strength of the combined blank is ensured by the thick and wide welding seams.

Although the technology of producing double-sided stainless steel composite plates is also related at present, the technology has certain defects, for example, patent application No. 201811127380.X, the welding mode is that two side cladding plates and a middle base plate are directly welded, and because the thermal expansion coefficient of stainless steel is larger than that of carbon steel, the size of a surface cladding layer is larger than that of the base plate when the stainless steel enters a steel rolling heating furnace for heating. For example, taking the invented billet length 2450mm × 2000mm as an example, after being heated to 1100-1200 ℃ in a heating furnace, the stainless steel clad plate is about 12.25mm longer than carbon steel, and the arc tops of the clad plates on both sides are about 106mm higher than the substrate surface, so that three problems occur: firstly, the welding seam is expanded by huge expansion force, so that the rolling fails; secondly, the heated combined blank becomes a rectangular dish-shaped blank with a round top and a round bottom, and the round bottom below the rectangular dish-shaped blank can not walk on a blank conveying roller way of a rolling mill; and thirdly, the high coating is extruded to the tail end of the rolling during the rolling, so that the coating is uneven and even wrinkles appear, and the product quality of the composite plate is seriously influenced. For example, patent No. ZL201610393246.9 discloses that the composite billet is heated at high temperature (about 1100 ℃) to remove water and gas, and the clad plate and the base plate are welded together, and the power consumption of high-temperature heating is high. Meanwhile, the scheme is a five-layer structure, brazing materials are required, otherwise, the assembly task cannot be completed, and the combined blanks are welded into a whole by the brazing materials during assembly.

in summary, although the prior art can produce the double-sided stainless steel composite board, the prior art still has some defects in the aspect of producing the double-sided stainless steel composite board, and the production requirement of the double-sided stainless steel composite board cannot be well met.

Disclosure of Invention

The invention aims to solve the technical problem of providing a combined blank for producing a double-sided stainless steel composite plate and a blank assembling method thereof, and solves the problems that although the double-sided stainless steel composite plate can be produced in the prior art, the double-sided stainless steel composite plate has some defects in the production and cannot well meet the production requirement of the double-sided stainless steel composite plate.

in order to solve the technical problem, the invention provides a combined blank for producing a double-sided stainless steel composite board, which comprises a lower covering plate and an upper covering plate, wherein a substrate is arranged between the lower covering plate and the upper covering plate; the periphery of the outer side of the base plate is provided with a connecting steel plate, the connecting steel plate is positioned between the lower covering plate and the upper covering plate, the upper edge of the outer side of the connecting steel plate is welded with the upper covering plate, and the lower edge of the outer side of the connecting steel plate is welded with the lower covering plate; the upper covering plate, the lower covering plate and the connecting steel plate form a sealed box body structure.

Further, the upper and lower cover plates have the same size, the thickness of the upper and lower cover plates is smaller than that of the substrate, and the length and width of the upper and lower cover plates are respectively greater than that of the substrate.

Further, the thickness of the substrate is 5 to 100 times that of the upper and lower sheathing panels.

Further, the width of the connecting steel plate is the same as the thickness of the substrate, and the width of the connecting steel plate is 60-980 mm.

Optionally, between the base plate and the upper cladding plate, a brazing material is respectively disposed between the base plate and the lower cladding plate.

optionally, the upper and lower cover plates are made of stainless steel or non-ferrous metal.

Optionally, the substrate is made of carbon steel or low-grade stainless steel.

Further, the connecting steel plate is made of the same material as the substrate.

Accordingly, in order to solve the above technical problems, the present invention further provides a method for assembling the above composite blank for producing a double-sided stainless steel composite plate, wherein the method comprises:

Sequentially laying a lower clad plate, a base plate and an upper clad plate from bottom to top;

Arranging connecting steel plates around the outer side of the substrate;

And welding the upper edge of the outer side of the connecting steel plate and the upper covering plate together, and welding the lower edge of the outer side of the connecting steel plate and the lower covering plate together, so that the upper covering plate, the lower covering plate and the connecting steel plate form a sealed box body structure.

Further, the assembly method further comprises:

before laying the base plate, and before laying the upper covering plate, respectively laying a layer of brazing material on the lower covering plate and on the base plate.

The technical scheme of the invention has the following beneficial effects:

The lower cladding plate, the base plate and the upper cladding plate are sequentially laid from bottom to top; and connecting steel plates are arranged around the outer side of the base plate; the upper and lower clad plates are connected together through the connecting steel plate to form a sealed box-shaped combined blank which can be used for producing double-sided stainless steel composite plates, and the combined blank can be heated, vacuumized, dehydrated and degassed at low temperature (200-400 ℃), so that energy consumption is reduced; meanwhile, the cover plate and the connecting steel plate form a box body which can freely expand in the horizontal direction, so that the flatness of the combined blank when heated by a heating furnace, the feasibility of subsequent rolling and the product quality are ensured.

drawings

FIG. 1 is a schematic view of a unitized blank of the present invention;

fig. 2 is a schematic view of welding of the connecting steel plates of the present invention.

[ main component symbol description ]

1. A lower sheathing panel; 2. covering a plate; 3. a substrate; 4. connecting steel plates; 5. brazing solder; 6. and (7) welding seams.

Detailed Description

in order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The embodiment provides a combined blank for producing a double-sided stainless steel composite plate, aiming at the problems that although the double-sided stainless steel composite plate can be produced in the prior art, the double-sided stainless steel composite plate has some defects and cannot well meet the production requirement of the double-sided stainless steel composite plate;

as shown in fig. 1 and fig. 2, the combined blank for producing a double-sided stainless steel composite board of the present embodiment comprises a lower clad plate 1 and an upper clad plate 2, wherein a substrate 3 is arranged between the lower clad plate 1 and the upper clad plate 2; a connecting steel plate 4 is arranged on the periphery of the outer side of the base plate 3, the connecting steel plate 4 is positioned between the lower cladding plate 1 and the upper cladding plate 2, the upper edge of the outer side of the connecting steel plate 4 is welded with the upper cladding plate 2, and the lower edge of the outer side of the connecting steel plate 4 is welded with the lower cladding plate 1; the upper cladding plate 1, the lower cladding plate 2 and the connecting steel plate 4 form a sealed box structure, and here, it should be emphasized that, in this embodiment, the whole connecting steel plate 4 is not fully welded, only the upper edge and the lower edge of the outer side of the connecting steel plate 4 are welded, and the connecting steel plate 4 itself is used, not only the welding seam 6 is used to ensure the connection of the box-type assembled blank.

specifically, the number of the connecting steel plates 4 is four, the connecting steel plates are respectively distributed around the substrate 3, the inner side surface of each connecting steel plate 4 is respectively attached to the substrate 3, and two adjacent connecting steel plates 4 are welded and fixed with each other; besides the sealing function, the connecting steel plate 4 has another important function of connecting the upper cladding plate 2 and the lower cladding plate 1, so that the box-shaped combined blank can be heated, vacuumized, dehydrated and degassed at a low temperature (200-400 ℃), and the combined blank (or the combined blank without brazing filler metal) with the brazing filler metal in a non-melting state is sent to a rolling mill for rolling.

The combined blank comprises an upper covering plate 2, a lower covering plate 1, a base plate 3 and a base plate, wherein the upper covering plate 2 and the lower covering plate 1 are arranged on the outermost side of the combined blank and have the same size, the thickness of the upper covering plate 2 and the thickness of the lower covering plate 1 are far smaller than that of the base plate 3, the thickness of the base plate 3 is 5-100 times that of the upper covering plate 2 and the thickness of the lower covering plate 1, and the total thickness of the combined blank is 100-1000 mm; the dimensions of the upper and lower skin plates 2, 1 are somewhat larger than the base plate 3 in both the length and width directions. The width of the connecting steel plate 4 is the same as the thickness of the base plate 3, and the width of the connecting steel plate 4 is 60-980 mm.

Optionally, a brazing material 5 may be respectively disposed between the substrate 3 and the upper cladding plate 2, and between the substrate 3 and the lower cladding plate 1; of course, the brazing material 5 is optional.

The upper shroud plate 2 and the lower shroud plate 1 are made of stainless steel (e.g., 304, 316) or nonferrous metal (e.g., titanium). The substrate 3 is made of carbon steel or low-grade stainless steel. The connecting steel plate 4 is made of the same material as the base plate 3 to ensure the same thermal expansion dimension in the vertical direction as the base plate 3. Due to the difference in thermal expansion coefficient between the upper and lower sheathing plates 2 and 1 and the base plate 3, the upper and lower sheathing plates 2 and 1 are slightly larger in expansion dimension in the horizontal direction than the base plate 3 when heated in a heating furnace of a medium plate mill. Since the material of the connecting steel plate 4 is the same as that of the substrate 3, the thermal expansion dimension in the vertical direction is the same as that of the substrate 3.