CN113695393B - Method for preparing metal composite thin strip by using pad-rolling technology - Google Patents
Method for preparing metal composite thin strip by using pad-rolling technology Download PDFInfo
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- CN113695393B CN113695393B CN202110976938.7A CN202110976938A CN113695393B CN 113695393 B CN113695393 B CN 113695393B CN 202110976938 A CN202110976938 A CN 202110976938A CN 113695393 B CN113695393 B CN 113695393B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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Abstract
The invention belongs to the technical field of thin strip rolling, and particularly relates to a method for preparing a metal composite thin strip by a rolling technology, which comprises the following steps: 1) Preparing a blank; 2) Preparing a composite strip blank: buckling the surfaces to be compounded of the polished substrate thin strip A and the polished composite material thin strip B to obtain a group of composite strip blanks, repeatedly making a plurality of groups of composite strip blanks, symmetrically assembling 2N groups of composite strip blanks in the form of ABAB … … BABA (N=1, 2,3 … …), and brushing a spacer between the unground surfaces of adjacent composite strip blanks to obtain stacked composite strip blanks; 3) Rolling; 4) Heat treatment; 5) And (5) separating and finishing. According to the invention, the metal composite thin strip is prepared by adopting the rolling production process in a symmetrical assembly mode, so that a rolling mill with high rolling capacity is not required to be purchased at high cost, multi-pass rolling is not required, the plate shape problems such as bending and the like of the dissimilar metal composite thin strip after rolling can be avoided by adopting the symmetrical assembly, and the quality of the composite strip after rolling is ensured.
Description
Technical Field
The invention belongs to the technical field of thin strip rolling, and particularly relates to a method for preparing a metal composite thin strip by using a rolling technology.
Background
The metal composite material is formed by compounding two or more layers of metals with different properties, and combines the performance advantages of the two metals. Through reasonable selection of the base material composite material and proper processing technology, the metal composite material meeting different requirements can be obtained, and meanwhile, the cost is reduced. The metal composite belt product has the appearance characteristics of flat appearance, large width-thickness ratio and large unit volume, and the appearance characteristics enable the metal composite belt product to have the following using characteristics: (1) the covering capacity is strong; (2) the device can be arbitrarily cut, bent, punched and welded to be manufactured into various product components, and is convenient and flexible to use; (3) can be bent and welded into various complex sections.
The manufacturing method of the metal composite belt product comprises a magnetron sputtering method, a diffusion welding method, an electroplating deposition method, a rolling composite method and the like, wherein the rolling composite method refers to the process hardening layer formed by polishing the surface to be combined of the dissimilar metal thin belt is broken under the action of a rolling mill, fresh metals are exposed and contacted with each other, and the composite process is realized under the actions of pressure, temperature and the like.
In the rolling production, the metal composite band is usually rolled out in a flat way, so that the specification of a product is easy to change, the adjustment and the operation are convenient, and the continuous production is easy to realize; the shape is simple, and the product can be produced in a coiled manner. However, the different metals have larger plastic difference and poor deformation coordination capability, the rolling process is influenced by factors such as elastic deformation of a roller, and the rolling rate required by combination of the two is difficult to achieve, and the preparation is difficult, so that the problems of improving the existing technological means for producing the metal composite thin strip, reducing the manufacturing process difficulty, reducing the production cost and improving the quality of the metal composite thin strip are the problems to be solved in the technical field of thin strip rolling.
Disclosure of Invention
The present invention provides a method for producing a metal composite strip by a stitch rolling technique, which aims at the above-mentioned problems.
The invention adopts the following technical scheme to achieve the aim:
a method for producing a metal composite strip by means of a roll-to-roll technique, comprising the steps of:
1) Blank preparation: selecting a base material thin belt A and a composite material thin belt B with the same length and width, and polishing to remove an oxide layer on the surface to be compounded of the base material thin belt A and the composite material thin belt B by using sand paper until a metal matrix is seen;
2) Preparing a composite strip blank: buckling the surfaces to be compounded of the polished substrate thin strip A and the polished composite material thin strip B to obtain a group of composite strip blanks, repeatedly making a plurality of groups of composite strip blanks, symmetrically assembling 2N groups of composite strip blanks in the form of ABAB … … BABA (N=1, 2,3 … …), and brushing a spacer between the unground surfaces of adjacent composite strip blanks to obtain stacked composite strip blanks;
3) Rolling: feeding the stacked combined strip blank into a rolling mill, and rolling to a required thickness to obtain a 2N-group composite strip;
4) And (3) heat treatment: heating and preserving heat of the 2N group of composite belts by using a vacuum heating furnace, performing diffusion annealing treatment, and cooling treatment to obtain the 2N group of metal composite belts;
5) Separating and finishing, namely disassembling the 2N groups of metal composite belts after heat treatment along the surface of the belt isolating agent to obtain 2N independent double-layer metal composite belts, polishing, cleaning, trimming, stretching and leveling the obtained double-layer metal composite belts to obtain qualified metal composite thin belts.
Further, the deformation resistance of the base material thin strip A in the step 1) is larger than that of the composite material thin strip B.
Still further, the rolling mill used in the step 3) is any one of an asynchronous rolling mill, a two-high rolling mill, a four-high rolling mill, a six-high rolling mill or a twenty-high rolling mill.
Furthermore, when the rolling process of the rolling in the step 3) is cold rolling, the combined strip blank can be directly fed into a rolling mill for rolling; when the rolling process of the rolling in the step 3) is warm rolling, the combined strip blank is required to be subjected to welding and vacuumizing treatment and then is sent to a heating furnace to be heated to the warm rolling temperature, and then is rolled; when the rolling process of the rolling in the step 3) is hot rolling, the combined strip blank is required to be subjected to welding and vacuumizing treatment, and then is sent to a heating furnace to be heated to the hot rolling temperature, and then is rolled; the welding vacuumizing treatment comprises the following specific steps: and (3) performing circumferential sealing welding on the composite strip blank, simultaneously welding one end of a guide pipe with a gap of the composite strip blank, connecting the other end of the guide pipe with a vacuum pump, performing vacuumizing treatment, sealing the guide pipe, and simultaneously removing the vacuum pump.
Compared with the prior art, the invention has the following advantages:
the invention prepares the metal composite thin strip by adopting the rolling production process of the symmetrical assembly mode, does not need to purchase a rolling mill with large rolling capacity at high price or to roll for multiple passes, and the symmetrical assembly can avoid the plate shape problems of bending and the like of the rolled dissimilar metal composite thin strip, ensures the quality of the rolled composite strip, can greatly improve the yield of the metal composite thin strip, and is a metal composite thin strip manufacturing method with simple and convenient working procedure, short period, high efficiency and low cost. In addition, in the hot rolling composite process, a method of assembly welding and vacuumizing is adopted before rolling, so that oxidation of a bonding interface during heating and rolling of the metal composite thin strip is greatly reduced, bonding strength of the metal composite thin strip is remarkably improved, and the method is worthy of popularization and application in industry.
Drawings
FIG. 1 is a schematic view of the surface treatment of a substrate A and a composite B according to the present invention.
Fig. 2 is a schematic structural view of the composite strip of the present invention.
Fig. 3 is a schematic view of the construction of the composite strip of the present invention (exemplified by group 4).
Fig. 4 is a schematic rolling diagram of a composite strip.
Fig. 5 is a schematic illustration of the disassembly of a rolled composite strip blank into 2N sets of double-layer metal composite strips.
The figures are labeled as follows: base material-A, composite material-B, isolating agent-C and roller-D.
Detailed Description
In order to further illustrate the technical scheme of the invention, the invention is further illustrated by the following examples.
Example 1
A method for producing a metal composite strip by means of a roll-to-roll technique, comprising the steps of:
1) Blank preparation: selecting a T2 red copper thin belt and a 1100 aluminum belt, wherein the T2 red copper thin belt is 0.5mm thick, 40mm wide and 80mm long as a base material, the 1100 aluminum belt is 0.5mm thick, 40mm wide and 80mm long as a composite material, and polishing the composite material by sand paper to remove an oxide layer on the surface to be composited of copper belt and aluminum belt metal until a metal matrix is seen;
2) Preparing a composite strip blank: buckling the surfaces to be compounded of the 1100 aluminum strip and the T2 red copper thin strip to prepare blanks to obtain a group of copper-aluminum composite strip blanks, sequentially making 6 groups, then 6 groups of copper-aluminum-copper-aluminum symmetrically assembling aluminum copper, brushing a release agent between each group to obtain a stacked combined strip blank;
3) Rolling: feeding the obtained combined strip blank into a four-roller reversible rolling mill, and rolling according to 65% reduction and a rolling speed of 36r/min to tightly combine the copper strip and the aluminum strip to obtain 6 groups of composite strips;
4) And (3) heat treatment: carrying out 350 ℃ diffusion annealing treatment on the 6 groups of rolled composite strips by utilizing a tubular vacuum furnace, keeping the temperature for 15min, and cooling along with the furnace to obtain 6 groups of copper-aluminum composite strips;
5) And (3) separating and finishing, namely disassembling 6 groups of copper-aluminum composite belts along the surface added with the isolating agent to obtain 6 independent groups of T2 copper-1100 aluminum composite belts, and polishing, cleaning, trimming and straightening the T2 copper-1100 aluminum composite belts obtained by separation to obtain qualified T2 copper-1100 aluminum composite belts.
Example 2
A method for producing a metal composite strip by means of a roll-to-roll technique, comprising the steps of:
1) Blank preparation: selecting a T2 red copper thin belt and a 304 stainless steel belt, wherein the size of the 304 stainless steel belt is 0.1mm thick, 50mm wide and 100mm long as a base material, the size of the T2 red copper thin belt is 0.3mm thick, 50mm wide and 100mm long as a composite material, and polishing the composite material by sand paper to remove an oxide layer on the surface to be composited of the T2 red copper thin belt and the 304 stainless steel belt metal until a metal matrix is seen;
2) Preparing a composite strip blank: buckling the surfaces to be compounded of the 304 stainless steel belt and the T2 red copper thin belt to prepare blanks to obtain a group of steel-copper composite belt blanks, sequentially preparing 8 groups, then 8 groups of steel copper copper steel form assembly, coating a release agent between the two groups to obtain a stacked combined strip blank;
3) Welding and vacuumizing a composite strip blank: performing circumferential sealing welding on the steel-copper composite strip blank, simultaneously welding one end of a guide pipe with a gap of the steel-copper composite strip blank, connecting the other end of the guide pipe with a vacuum pump, performing vacuumizing treatment, sealing the guide pipe, and simultaneously removing the vacuum pump;
4) Heating, namely putting the combined strip blank into a tubular heating furnace to heat at the temperature of 450 ℃ for 15min;
5) Rolling, namely feeding the heated combined strip blank into a two-roll mill, and rolling according to 37% reduction and a rolling speed of 30r/min to enable the copper strip and the stainless steel strip to be tightly combined to obtain 8 groups of composite strips;
6. and (3) heat treatment: carrying out 400 ℃ diffusion annealing treatment on the 8 groups of rolled composite strips by using a tubular vacuum furnace, keeping the temperature for 1h, and cooling along with the furnace to obtain 8 groups of steel-copper composite strips;
7. and (3) separating and finishing, namely disassembling 8 groups of steel-copper composite belts along the surface added with the isolating agent to obtain 8 groups of T2 pure copper-304 stainless steel composite belts, and polishing, cleaning, trimming and straightening the T2 pure copper-304 stainless steel composite belts obtained by separation to obtain qualified T2 pure copper-304 stainless steel composite belts.
While the principal features and advantages of the present invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A method for preparing a metal composite thin strip by a roll-to-roll technology is characterized in that: the method comprises the following steps:
1) Blank preparation: selecting a base material thin belt A and a composite material thin belt B with the same length and width, and polishing to remove an oxide layer on the surface to be compounded of the base material thin belt A and the composite material thin belt B by using sand paper until a metal matrix is seen;
2) Preparing a composite strip blank: buckling the surfaces to be compounded of the polished substrate thin strip A and the polished composite material thin strip B to obtain a group of composite strip blanks, repeatedly making a plurality of groups of composite strip blanks, symmetrically assembling 2N groups of composite strip blanks in the form of ABAB … … BABA (N=1, 2,3 … …), and brushing a spacer between the unground surfaces of adjacent composite strip blanks to obtain stacked composite strip blanks;
3) Rolling: feeding the stacked combined strip blank into a rolling mill, and rolling to a required thickness to obtain a 2N-group composite strip;
4) And (3) heat treatment: heating and preserving heat of the 2N group of composite belts by using a vacuum heating furnace, performing diffusion annealing treatment, and cooling treatment to obtain the 2N group of metal composite belts;
5) Separating and finishing, namely disassembling the 2N groups of metal composite belts after heat treatment along the surface of the belt isolating agent to obtain 2N independent double-layer metal composite belts, polishing, cleaning, trimming, stretching and leveling the obtained double-layer metal composite belts to obtain qualified metal composite thin belts.
2. A method of producing a metal composite strip by a roll-to-roll technique as claimed in claim 1, wherein: the deformation resistance of the base material thin strip A in the step 1) is larger than that of the composite material thin strip B.
3. A method of producing a metal composite strip by a roll-to-roll technique as claimed in claim 1, wherein: the rolling mill used in the step 3) is any one of an asynchronous rolling mill, a two-high rolling mill, a four-high rolling mill, a six-high rolling mill or a twenty-high rolling mill.
4. A method of producing a metal composite strip by a roll-to-roll technique as claimed in claim 1, wherein: when the rolling process of the rolling in the step 3) is cold rolling, the combined strip blank can be directly fed into a rolling mill for rolling; when the rolling process of the rolling in the step 3) is warm rolling, the combined strip blank is required to be subjected to welding and vacuumizing treatment and then is sent to a heating furnace to be heated to the warm rolling temperature, and then is rolled; when the rolling process of the rolling in the step 3) is hot rolling, the combined strip blank is required to be subjected to welding and vacuumizing treatment, and then is sent to a heating furnace to be heated to the hot rolling temperature, and then is rolled; the welding vacuumizing treatment comprises the following specific steps: and (3) performing circumferential sealing welding on the composite strip blank, simultaneously welding one end of a guide pipe with a gap of the composite strip blank, connecting the other end of the guide pipe with a vacuum pump, performing vacuumizing treatment, sealing the guide pipe, and simultaneously removing the vacuum pump.
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| CN103418611B (en) * | 2013-07-19 | 2016-01-20 | 中南大学 | A kind of method of Rolling Production stainless steel-aluminium-stainless steel three-layer composite board |
| CN104014997A (en) * | 2014-06-11 | 2014-09-03 | 河北钢铁股份有限公司 | Manufacturing method for stainless steel composite boards |
| CN105127199B (en) * | 2015-10-09 | 2017-04-26 | 中国第一重型机械股份公司 | Process technical method for hot rolling combining of steel plate through symmetrical outer cladding and rolling control as well as cold control |
| CN107649513A (en) * | 2016-07-26 | 2018-02-02 | 上海却尘科技有限公司 | A kind of composite rolling assembly structure and its production technology |
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| CN110548765A (en) * | 2019-08-08 | 2019-12-10 | 太原理工大学 | Interlayer micro-nano particle spraying auxiliary metal ultra-thin strip rolling compounding process |
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