Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparing method for spliced combined structure composite metal sheet and composite metal sheet of preparing method

A combined structure and composite metal technology, which is applied to the preparation of composite metal sheets of spliced ​​composite structures and the field of composite metal sheets, can solve the problems of broken interface bonding, composite failure, and instability of the interface stiffness to be bonded, etc., so as to eliminate processing stress. Effect

Active Publication Date: 2017-11-07
徐卓辉 +1
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the patent No. 200910110705.8 "a conductive connecting piece of a side composite metal structure and its production method" proposes a scheme for a conductive connecting piece punched out laterally by a side composite metal strip made of different metals, but especially for Similar to the combination of light metal materials such as aluminum, magnesium, titanium, lithium and other heterogeneous materials under the condition of thermal diffusion, it is easy to form intermetallic compounds. Engineering practice shows that such combination materials should directly prepare plates and strips with side composite structures. The processing technology is quite difficult: on the one hand, when continuous high-energy beams (such as lasers and electron beams) are used to directly act on the contact sides of heterogeneous metals, the instantaneous high-temperature diffusion makes it easy to generate intermetallic compounds between the two materials and directly destroy the bonding of the interface. ; On the other hand, even if the rolling composite process is adopted, when the dissimilar metal strips enter the rolling mill side by side, the sides that are in contact with each other mainly form a fresh bonding interface through the horizontal extrusion force generated by limiting the material width in the rolling deformation zone Obviously, generally speaking, the dimension of the width direction of the metal strip is much larger than the dimension of the thickness direction. At this time, the extrusion force in the horizontal direction of the strip is actually prone to stiffness instability at the interface to be bonded, that is, the necessary interface bonding. The energy is difficult to introduce, resulting in recombination failure
All of these make the preparation and application of side clad metal strips combined with light metal and other materials and their conductive connecting pieces difficult to be widely promoted.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparing method for spliced combined structure composite metal sheet and composite metal sheet of preparing method
  • Preparing method for spliced combined structure composite metal sheet and composite metal sheet of preparing method
  • Preparing method for spliced combined structure composite metal sheet and composite metal sheet of preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The ring-shaped composite metal sheet 111 of embodiment 1 sees figure 1 and figure 2 , which is composed of an outer ring of pure aluminum (A1060) metal sheet 11 and an inner ring of pure copper (T2) metal sheet 12. Combining strong physical metallurgical bonding methods, the outer diameter of the aluminum ring metal sheet is Ф12mm, the inner diameter is Ф11mm, and there is a through hole 13 in the middle of the copper ring metal sheet, that is, the outer diameter of the copper ring is Ф11mm, and the inner ring through hole 13 diameter is Ф9mm. The thickness of the entire annular metal sheet and the copper and aluminum metal sheets is 2mm.

[0041] The preparation process of the whole ring-shaped composite metal sheet is as follows:

[0042] S1. The incoming material is Ф13 pure copper rod and Ф9.5 pure aluminum rod for cladding and continuous extrusion. The core material is copper rod and the cladding material is aluminum rod. The TLJ340 continuous extrusion machin...

Embodiment 2

[0048] See Figure 9 , the conductive connecting piece 300 is designed as follows: thickness 1.2mm; total length 200mm (of which C10200 pure copper 301 is 120mm long, 1060 pure aluminum 302 is 80mm long, pure copper and pure aluminum are both 1.2mm and they are joined together on the side where they are in contact combined); width 70mm. This design adopts the technical scheme that copper-aluminum side (rolling) composite strip material is punched into sheet again along the transverse direction of strip material is quite difficult, and the prior art is difficult to obtain. However, by adopting the technical solution disclosed in the present invention, it is possible to obtain a conductive connecting metal sheet with a copper-aluminum spliced ​​connection structure that meets the size and application performance requirements of the originally designed conductive connecting sheet 300 . Proceed as follows:

[0049] S1, the C10200 copper strip with a raw material width of 150mm a...

Embodiment 3

[0055] The specific embodiment is completely consistent with the material composition and structure of the final product of embodiment 1—annular interlocking composite metal sheet.

[0056] Different from Example 1, the S1 step of this example adopts the pre-coating combined drawing method: that is, the uncoiled soft aluminum strip 2.0mm (thickness)*62mm (width) surrounds a pure copper rod with a diameter of Φ20mm, and through the coating On-line cleaning of the welding unit, multiple sets of cold-bending forming dies are gradually rolled into a round tube, and then the CO 2 The continuous laser welding machine continuously welds the longitudinal seam formed by the round tube. After the welding is completed, the unit is equipped with a Φ22mm drawing die, so that the aluminum tube tightly covers the copper rod, preventing air from entering the gap between the copper rod and the aluminum tube to cause oxidation; Then, a Φ22mm aluminum-clad copper rod is subjected to 60% large pl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparing method for a spliced combined structure composite metal sheet and the composite metal sheet of the preparing method. At least two kinds of heterogeneous metal materials are subjected to solid-phase composition, and a non-side-face composite structural layered composite initial blank is obtained; the layered composite metal initial blank is subjected to plastic forming machining, straightening and cutting treatment, and a non-side-face composite structural layered composite metal long strip is manufactured; a slicing type cutting technology is adopted on the obtained non-side-face composite structural layered composite metal long strip, and multiple composite metal sheet blanks are manufactured; and the composite metal sheet blanks are subjected to machining and surface treatment, and the composite metal sheet is formed. The manufactured spliced metal sheet is formed in the manner that at least two kinds of metal sheets are tightly combined through mutual contact side faces in a firm physical metallurgy bonding manner. The spliced composite metal sheet has more reliable welding characteristics, and the production cost is obviously reduced while the performance requirements for good electric conduction, heat dissipation, weight reduction, transition connection and the like of overall parts are met.

Description

technical field [0001] The patent of the invention relates to a preparation method of a composite metal sheet with a combined structure and the composite metal sheet, which can be widely used in electric power, batteries, automobiles, electronics and other industrial fields. Background technique [0002] At present, in the electric power, battery, automobile, electronics and other industrial fields, a large number of metal parts of different materials need to be paired and connected, such as bus bars, positive and negative connections of multiple single cells, automotive structural parts, packaged heat sinks, etc. For example, aluminum has the characteristics of relatively abundant resources, low density, and good electrical conductivity and heat dissipation. At the same time, its low strength and difficult welding (including soldering tin and difficulty in welding with other non-aluminum metals) limit its larger-scale use. Therefore, the reliable connection design between a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21D39/02
CPCB21C37/02B21D39/02Y02E60/10
Inventor 徐卓辉
Owner 徐卓辉
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products