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Stainless steel/carbon steel bi-metal thread steel and composite molding technology thereof

A composite molding, stainless steel technology, applied in the direction of metal layered products, lamination, building elements, etc., to achieve the effect of reducing engineering costs, improving strength, and saving stainless steel materials

Inactive Publication Date: 2015-12-16
HUNAN 3T NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the embodiment of the present invention, a stainless steel / carbon steel bimetal rebar and its composite forming process are provided to solve the problem of how to reduce the cost of engineering materials to the greatest extent on the premise of ensuring that the rebar used meets the engineering quality

Method used

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  • Stainless steel/carbon steel bi-metal thread steel and composite molding technology thereof
  • Stainless steel/carbon steel bi-metal thread steel and composite molding technology thereof
  • Stainless steel/carbon steel bi-metal thread steel and composite molding technology thereof

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Embodiment 1

[0072] In this embodiment, 304 stainless steel and HRB335 steel billets are used, and finally rolled into bimetallic rebar with a diameter of Φ25mm.

[0073] Such as Figure 4 and Figure 5 As shown, it is a schematic diagram of the basic structure of a bimetal blank provided by the embodiment of the present invention.

[0074] In this embodiment, the stainless steel pipe blank 4 of the outer layer is made of 304 stainless steel, and the stainless steel steel pipe blank 4 is a round seamless steel pipe, and its specific size is Φ150×5×2000 (outer diameter×wall thickness×length, mm). The carbon steel core blank 5 of the core adopts the blank used for producing HRB400 rebar, and its specific size is Φ140.07×2000 (outer diameter×length, mm), the carbon steel core blank 5 and the stainless steel pipe blank 4 The interference between them is 0.07mm.

[0075] The stainless steel pipe blank 4 is firstly deburred on the inner surface, then pickled, and finally cleaned with acetone....

Embodiment 2

[0081] In this embodiment, 316L stainless steel and the blank for producing HRB500 rebar will be used, and finally rolled into bimetallic rebar with a diameter of Φ28mm.

[0082] Such as Figure 6 As shown, it is a schematic diagram of the basic structure of another bimetal blank provided by the embodiment of the present invention.

[0083]In this embodiment, the outer stainless steel pipe blank 4 is made of 316L stainless steel, and the stainless steel steel pipe blank 4 is an equilateral rectangular seamless steel pipe, and its specific size is 160×5×3000 (side length×wall thickness×length, mm). The carbon steel core blank 5 of the core adopts the blank used for producing HRB500 rebar, and its concrete size is 150.5 * 3000 (side length * length, mm), the distance between the carbon steel core blank 5 and the stainless steel pipe blank 4 The amount of interference is 0.5mm.

[0084] The stainless steel pipe blank 4 is firstly deburred on the inner surface, then pickled, and...

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Abstract

The embodiment of the invention discloses stainless steel / carbon steel bi-metal thread steel and a composite molding technology thereof. The stainless steel / carbon steel bi-metal thread steel comprises a stainless steel layer and a carbon steel core. The composite molding technology of the stainless steel / carbon steel bi-metal thread steel comprises the steps that a carbon steel core blank is loaded into a hollow stainless steel tube blank to form a bi-metal blank, and the carbon steel blank and the stainless steel tube blank are in interference fit; heating and hot-rolling machining are performed on the assembled bi-metal blank to form the bi-metal thread steel. Due to the fact that the interference fit and rolling pressure effects of the molding technology exist on the bonding interface of the stainless steel layer and the carbon steel core, the metallurgical bonding interface with the high bonding strength and the good technological performance can be formed. Meanwhile, the bi-metal thread steel is adopted for replacing stainless steel thread steel in the prior art, and on the premise that the corrosion resistance of the thread steel is ensured, stainless steel materials are saved, the engineering cost is lowered, and the strength of the thread steel is effectively improved, so that the bi-metal thread steel has the wide application prospect.

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 bimetal rebar and a composite forming process thereof. Background technique [0002] Rebar is a steel bar with ribs on the surface, commonly known as hot-rolled ribbed steel bars, usually with two longitudinal ribs and transverse ribs evenly distributed along the length. Due to the role of ribs, rebar has greater adhesion to concrete and can better withstand external forces, so it is widely used in various building structures. With the progress of society, people put forward higher and higher requirements for the safety performance and service life of buildings. Traditional rebar is made of carbon steel, but carbon steel has the disadvantages of easy oxidation and corrosion, especially in coastal areas and along rivers. In waterside and underwater concrete, as time goes by, chloride salts will intensify the c...

Claims

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Application Information

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IPC IPC(8): B32B1/00B32B1/04B32B15/01B32B3/30B32B37/06B32B37/10B32B38/00B32B38/16F16S3/00
CPCF16S3/00B32B1/00B32B3/30B32B15/011B32B37/06B32B37/10B32B38/0012B32B38/162
Inventor 向勇李聚良毛劲松李存良王云曾麟芳
Owner HUNAN 3T NEW MATERIAL
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