Stainless steel/carbon steel double-metal angle iron and composite molding technology
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A composite molding and bimetallic technology, which is applied in the direction of metal layered products, lamination, building components, etc., to achieve the effect of reducing engineering costs, high strength, and high bonding strength
Inactive Publication Date: 2015-12-23
HUNAN 3T NEW MATERIAL
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[0005] In the embodiment of the present invention, a stainless steel / carbon steel bimetallic angle steel and its composite forming process are provided to solve the problem of how to minimize the cost of engineering materials on the premise of ensuring that the angle steel used meets the service life and safety performance of structural components
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Embodiment 1
[0065] In this embodiment, 304 stainless steel and Q235A steel billets are used, and finally rolled into an equilateral bimetallic angle steel with a side length of 40 mm and a thickness of 5 mm.
[0066] Such as figure 2 and image 3 As shown, it is a schematic diagram of the basic structure of a bimetal blank provided by the embodiment of the present invention.
[0067] In this embodiment, the outer stainless steel pipe blank 5 is made of 304 stainless steel, and the stainless steel steel pipe blank 5 is a circular seamless steel pipe, and its specific size is Φ150×5×2000 (diameter×wall thickness×length, mm). The carbon steel core blank 6 of the core is a Q235A steel blank, and its specific size is Φ140.05×2000 (diameter×length, mm). The interference between the carbon steel core blank 6 and the stainless steel pipe blank 5 0.05mm.
[0068] The stainless steel pipe blank 5 is firstly deburred on the inner surface, then pickled, and finally cleaned with acetone. The blan...
Embodiment 2
[0074] In this embodiment, 316 stainless steel and Q235B steel core blanks are used, and finally rolled into an equilateral bimetallic angle steel with a side length of 25 mm and a thickness of 3 mm.
[0075] Such as Figure 4 As shown, it is a schematic diagram of the basic structure of another bimetal blank provided by the embodiment of the present invention.
[0076] In this embodiment, the outer stainless steel pipe blank 5 is made of 316 stainless steel, and the stainless steel steel pipe blank 5 is a rectangular seamless steel pipe with a specific size of 160×5×2000 (side length×wall thickness×length, mm). The carbon steel core blank 6 of the core adopts a Q235B steel blank, and its specific size is 150.3 × 2000 (side length × length, mm), and the interference between the carbon steel core blank 6 and the stainless steel pipe blank 5 is 0.3mm.
[0077] The stainless steel pipe blank 5 is firstly deburred on the inner surface, then pickled, and finally cleaned with acet...
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Abstract
The embodiment of invention discloses stainless steel/carbon steel double-metal angle iron and a composite molding technology. The double-metal angle iron comprises a first angle iron foot and a second angle iron foot which are molded integrally, wherein each of the first and second angle iron feet comprises an outer stainless steel layer and an inner carbon steel core; the stainless steel layers coat the circumferences of the corresponding carbon steel cores; the inner walls of the stainless steel layer and the outer walls of the corresponding carbon steel cores are in closing fitting; bonding interfaces of the stainless steel layers and the corresponding carbon steel cores are subjected to interference fit, high-temperature heating and action of rolling pressure in the composite molding technology to form metallurgical bonding interfaces which are high in bonding intensity and good in processing property. The double-metal angle iron disclosed by the invention can be used for replacing stainless steel angle iron, on the premise of ensuring an angle iron corrosion resistance characteristic, stainless steel materials are saved, and the engineering cost is reduced; compared with common stainless steel angle iron, the double-metal angle iron disclosed by the invention has the higher strength.
Description
technical field [0001] The invention relates to the technical field of metal materials and metallurgical steel rolling, in particular to a stainless steel / carbon steel bimetallic angle steel and a composite forming process thereof. Background technique [0002] Angle steel, commonly known as angle iron, is a long strip of steel that is perpendicular to each other and forms an angle. It can be divided into equilateral angle steel and unequal angle steel. Angle steel can be composed of various stress components according to the different needs of the structure, and can also be used as a connector between components, and is widely used in various building structures and engineering structures. Ordinary angle steel is made of carbon structural steel, which is a simple cross-section section steel, which requires good weldability, plastic deformation performance and certain mechanical strength in use. Ordinary carbon structural angle steel has defects such as easy rust and corros...
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