Preparation method for producing deep-drawn cold-formed medicinal aluminum foil with cast-rolling billet in short process

A short process, cold forming technology, applied in metal rolling and other directions, can solve the problems of strength and toughness to be improved, long production process, etc., to ensure the uniformity of grain structure, excellent deep drawing cold forming performance, resistance to cold forming. The effect of high breaking strength

Pending Publication Date: 2020-08-18
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides a preparation method for producing deep-drawn cold-formed medicinal aluminum foil with a short process of casting and rolling slabs, which solves the problems

Method used

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Examples

Experimental program
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Example Embodiment

[0051] This embodiment discloses a preparation method for producing deep-drawing cold-formed medicinal aluminum foil from a short-flow cast-rolled billet, which specifically includes the following steps:

[0052] (1) Melting and casting-rolling process: 8021 aluminum alloy is used for smelting, casting and rolling into billets with a certain thickness; the smelting and casting-rolling process must be cleaned of slag and degassing to ensure uniform composition, and the melting temperature is 700-770℃ , The temperature of the guide furnace is 730-770℃;

[0053] (2) Cold rolling and homogeneous high temperature treatment: the billet in step (1) is billeted and rolled. The billet is rolled through 1-3 passes to form a billet with a thickness of 2.0-6.5mm. The outer ring is welded and used The straps are tightened, and the annealing furnace enters the furnace for production; rolling oil is used for lubrication and cooling to obtain aluminum alloy coils;

[0054] (3) Intermediate rolling,...

Example Embodiment

[0078] Example one:

[0079] The specific steps of this embodiment are as follows:

[0080] (1) Melting, casting and rolling process: The smelting, smelting and casting process of 8021 aluminum alloy must be cleaned of slag and gas, and ensure uniform composition. The melting temperature is 755℃, and the temperature of the pilot furnace is 740℃.

[0081] In this embodiment, the mass percentages of the components in the 8021 alloy material are: a. Add the aluminum ingot and the AL-Fe master alloy to the smelting furnace according to the above proportions. The mass content of Fe is 20%, or the mass content of Fe is 75. % Of additives to control the proportion of each element in the aluminum alloy as Si=0.08%, Fe=1.35%, Cu=0.015%, Mn<0.05%, Mg<0.05%, Cr<0.05%, Zn<0.05%, Ti= 0.028%, the rest is Al; add modifier Sr: 0.018%; then smelt at 755℃, smelt for 5 hours and then refining, use 99.99% high-purity argon inert gas and refining agent for refining for 20 minutes, and remove the melt af...

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Abstract

The invention discloses a preparation method for producing deep-drawn cold-formed medicinal aluminum foil with a cast-rolling billet in a short process. The method sequentially includes the steps of smelting, cast rolling, cold rolling, homogeneous high-temperature treatment, intermediate rolling, slitting shear trimming, intermediate annealing, finish rolling, foil rolling, coil combining, finished product rolling, parting-off, and furnace loading for annealing. Raw materials of the deep-drawn cold-formed medicinal aluminum foil include an aluminum alloy and an Al-Fe intermediate alloy with amass content of 20% or a Fe-containing additive with a mass content of 75%, and elements in the aluminum alloy include 0.025-0.10% of Si, 1.25-1.65% of Fe, 0.001-0.10% of Cu, less than 0.05% of Mn, less than 0.05% of Mg, less than 0.05% of Cr, less than 0.05% of Zn, 0.01-0.04% of Ti and the balance A. By means of the recorded preparation method, final product detection shows that the end face layer offset after parting-off is less than or equal to 0.5 mm, the width of the corrugated edge is 3 mm, and the peak value is 1 mm; the surface cleanliness dyne value is greater than or equal to 65 dyn; as for mechanical properties, the tensile strength is 80-115 MPa, the elongation rate is 23%, and the yield ratio is 42%; and the Erichsen value is 5.0 mm, the deep drawing height is 2.0 mm, the surface hardness value is 22 HV, the bursting strength is 400-800 Ka, and the surface swabbing reaches level A.

Description

technical field [0001] The invention relates to the technical field of aluminum foil processing, in particular to a preparation method for producing deep-drawn cold-formed medicinal aluminum foil by short-flow casting and rolling slabs. Background technique [0002] Aluminum foil is widely used in packaging, electronics, construction and other fields due to its advantages of non-toxicity, shading, heat insulation, moisture resistance, gas barrier, and aesthetics. Usually when users use aluminum foil, they compound it with paper and plastic, which further broadens the application market of aluminum foil. Aluminum-plastic composite film is divided into two types: aluminum-plastic film and aluminum-coated composite film. It has good flexibility, moisture-proof, oxygen-proof, shielding, anti-static and other incomparable advantages. It is widely used in food, medicine, chemical industry, etc. industry. Especially in the field of medicine, the requirements for aluminum-plastic ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02C22C1/03C22C1/06C22F1/04B21B1/40B21B3/00
CPCB21B1/40B21B3/00B21B2003/001C22C1/026C22C1/03C22C1/06C22C21/00C22F1/04
Inventor 万宝伟徐成志董则防张彩龙颜红军殷文琦李健周越王超新曾元
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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