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 of breaking strength, barrier property, and deep-drawn cold-formation performance of the traditional Chinese medicinal aluminum foil in the prior art. , strength and toughness needs to be improved and the technical problems of long production process

Method used

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preparation example Construction

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

[0052] (1) Smelting, casting and rolling process: 8021 aluminum alloy is used for smelting, casting and rolling into billets of a certain thickness; slag removal and degassing must be done during the smelting and casting rolling process to ensure uniform composition, and the melting temperature is 700-770°C , the temperature of the furnace is 730-770°C;

[0053] (2) Cold rolling, homogeneous high-temperature treatment: Carry out billet rolling on the billet in step (1), and the billet is rolled through 1-3 passes to make a billet with a thickness of 2.0-6.5mm, weld the outer ring, and use The packing belt is tightened and transferred to an annealing furnace for production; and rolling oil is used for lubrication and cooling to obtain aluminum alloy coils;

[0054] (3) Intermedi...

Embodiment 1

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

[0080] (1) Smelting, casting and rolling process: 8021 aluminum alloy is used for smelting, smelting and casting and rolling process must be clean of slag and degassing to ensure uniform composition.

[0081] In this embodiment, the mass percentages of the components in the 8021 alloy material are: a. Add aluminum ingots and AL-Fe master alloys with a Fe mass content of 20% or a Fe content of 75% in the smelting furnace according to the above ratio % of additives, the proportion of each element in the aluminum alloy is controlled 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 melt at 755°C for 5 hours, then refine with 99.99% high-purity argon inert gas and refining agent for 20 minutes, remove the melt after completion The scum on the body surface is refined again at an interval of 1 hour, and the smelting in the smelting furnace...

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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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