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Dissimilar metal rolling bonding method with embedded type rib and groove interlocking

A technology of dissimilar metals, rolling and cladding, applied in metal rolling, metal rolling, metal rolling stands, etc., can solve the problems of low bonding strength and increase the probability of diffusion, and achieve simple surface configuration and large bonding area. , The effect of improving the quality of the plate shape

Active Publication Date: 2020-06-23
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of generally low bonding strength of bimetallic clad plates in the prior art, and intends to provide a dissimilar metal rolling and cladding method with interlocking embedded ribs and grooves. Manufacture embedded rib grooves, realize the interlocking rolling method of rib grooves after asynchronous rolling, use good mechanical connection, generate interlocking structure and increase diffusion probability combined measures to fully improve interface contact strength

Method used

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  • Dissimilar metal rolling bonding method with embedded type rib and groove interlocking
  • Dissimilar metal rolling bonding method with embedded type rib and groove interlocking
  • Dissimilar metal rolling bonding method with embedded type rib and groove interlocking

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Embodiment 1

[0061] Such as Figure 1-Figure 9 As shown, the dissimilar metal rolling composite method with embedded rib groove interlocking in this embodiment includes the following steps:

[0062] S1. Forming and rolling with single-sided ribs: select pure Cu plate as a relatively hard component, and the length, width and height of the raw material are 100mm, 100mm and 5mm respectively. A rolling mill is used to roll the Cu plate. Among the upper and lower working rolls of the rolling mill, the patterned roll 200 is used as the upper roll, and the flat roll 300 is used as the lower roll, so as to observe the grooves formed on the rolled piece. The patterned roller 200 has a roll diameter of 118 mm and a roll surface width of 160 mm. The axial cross-sectional shape of the pattern is a zigzag groove, that is, forming transverse grooves 202; 40 grooves are evenly distributed around the roll surface, and the groove depth is 1.5 mm. In the longitudinal direction of the patterned roller 200, ...

Embodiment 2

[0066] The dissimilar metal rolling composite method with embedded rib groove interlocking in this embodiment is basically the same as in Embodiment 1, the difference is that the patterned roller 200 is the upper roller when rolling in step S1 in this embodiment, and the flat roller 300 is the lower roll; and the profile apex angle γ of the formed transverse rib 101 is 30°, and the tooth profile root angle θ of the transverse rib 101 is 90 °; the cross-sectional shape of the formed longitudinal rib 102 is image 3 The trapezoid shown in b; the reduction rate of the asynchronous forming rolling in step S3 is 10%, and the tooth root angle θ of the transverse rib 101 after rolling is further reduced to less than 90°.

Embodiment 3

[0068] The dissimilar metal rolling composite method with embedded rib groove interlocking in this embodiment is basically the same as in Embodiment 2, the difference is that the tooth-shaped apex angle γ of the formed transverse rib 101 in this embodiment is 90°, and the transverse rib The tooth root angle θ of 101 is 80°; the cross-sectional shape of the formed longitudinal rib 102 is image 3 The triangle shown in c; the reduction ratio of the asynchronous forming rolling in step S3 is 50%, and the tooth root angle θ of the transverse rib 101 is further reduced after rolling.

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Abstract

The invention discloses a dissimilar metal rolling bonding method with embedded type rib groove interlocking, and belongs to the field of bi-metal composite plate preparing. The method comprises the following steps of S1, single-side convex rib rolling, wherein a flat roller and a figure roller with a groove are matched, a first plate blank is rolled, and a convex rib is formed on the single sidesurface of the first plate blank; S2, preassembling rolling, wherein a second plate blank and the first plate blank are embedded, the first plate blank is embedded into the second plate blank to formchain type connection, and an embedded composite workpiece is formed; and S3, asymmetrical rolling, wherein the embedded composite workpiece is subjected to asymmetrical forming rolling, and a dissimilar metal composite plate is formed. The problem that in the prior art, the bonding strength of a dual-metal composite plate is low totally can be solved, the rolling bonding method that embedded typeribs and grooves are manufactured in dissimilar metal contact, and through asymmetrical rolling, rib and groove interlocking is achieved is adopted, measures of combining mechanical type connection,generation of an interlocking structure and increasing the diffusion rate are used, and the interface contact strength can be sufficiently improved.

Description

technical field [0001] The invention relates to the technical field of bimetal composite plate preparation, and more specifically, relates to a rolling composite method of dissimilar metals with interlocking embedded ribs and grooves. Background technique [0002] With the development and innovation of technologies in aerospace, transportation, electrical, instrumentation and other fields, the performance of traditional single materials can no longer meet the requirements, and composite strips have emerged as the times require. In the plate and strip rolling composite technology, the interfacial bonding strength is the most important issue that people are concerned about. Research and development personnel in the industry have come up with various methods to improve the interface bonding strength, such as improving the control of the contact surface roughness, increasing the rolling reduction, and using post-rolling annealing to improve the interface diffusion capacity, etc....

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B13/02B21B47/00B21B27/02
CPCB21B1/22B21B1/227B21B13/02B21B47/00B21B27/021B21B2013/021B21B2205/02
Inventor 刘相华黄贞益宋孟白凤梅周红伟
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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