CN103422036B - Production method of 1A80 aluminum alloy deep drawing wafer - Google Patents

Abstract

The invention discloses a production method of a 1A80 aluminum alloy deep drawing wafer. The key point of the invention is that reasonable production procedures of cast rolling, cold rolling, blanking and annealing are adopted. The steps are as follows: A, cast rolling: proportioning ingredients of the 1A80 aluminum alloy, and then cast rolling into a plate blank with thickness of 9-12 mm; B, cold rolling: cold rolling the cast rolled plate blank to 0.5-2 mm; C, blanking: blanking the cold rolled plate blank into a wafer with diameter of 60-1000 mm; D, annealing, annealing the wafer at temperature of 380 DEG C-460 DEG C and keeping the temperature for 2-6 hours. The 1A80 aluminum alloy wafer produced through the method has good deep drawability; meanwhile, with adoption of the method, the homogenization technology during the cold rolling process can be omitted, the annealing time for the wafer is shortened, and the advantages of simple technology, low energy consumption and low production cost can be achieved.

Description

A kind of production method of 1A80 aluminium alloy deep-draw disk

Technical field

The present invention relates to a kind of production method of 1A80 aluminium alloy deep-draw disk, deep-draw 1A80 aluminium alloy disk, mainly for the production of daily aluminum product, belongs to technical field of alloy material.

Background technology

1A80 aluminium alloy has good heat conductivility, erosion resistance and processability, is thus widely used in the fields such as daily necessities, packaging, traffic.

Hot rolling is the major way producing 1A80 aluminium alloy deep-draw disk at present, the deep-draw disk adopting Hot rolling to produce has good mechanical features, can meet production requirement, but its complete processing is complicated, production cost is higher, and during hot rolling simultaneously, the thickness evenness difficulty of sheet material controls.

In recent years, rolling casting technology is applied to the production of deep-draw aluminium alloy disk gradually, and its processing step is: casting, and---cold rolling---(homogenizing)---cold rolling---stamping-out---anneals.Rolling casting technology makes disk production technique simplify, and efficiency improves, and meets production requirement to a certain extent.But still there is many deficiencies in existing casting production deep-draw disk method.If do not arrange homogenization process in cold-rolled process, the scope that technique is suitable for is less, and main applicable production thickness is the disk of 0.5 ~ 1mm, and disk annealing time reaches 10 hours simultaneously, and energy consumption is higher.If increase homogenization process in cold-rolled process, be applicable to wider, but can production efficiency be reduced, add energy consumption.

Summary of the invention

The object of this invention is to provide the 1A80 aluminium alloy deep-draw disk production method that a kind of production technique is simple, energy consumption is low, with short production cycle, applied widely, deep drawability is good.

The production method of 1A80 aluminium alloy deep-draw disk of the present invention is successively through following processing step:

A, casting: al alloy component is become slab by casting after 1A80 ingredient standard batching, and the thickness of cast-rolled block is 9 ~ 12mm;

B, cold rolling: above-mentioned Casting Rolled Sheet to be cold-rolled to the cold-reduced sheet needing thickness;

C, stamping-out: above-mentioned cold-reduced sheet stamping-out is become disk;

D, annealing: above-mentioned disk is annealed, annealing temperature is 380 DEG C ~ 460 DEG C, and soaking time is 2 ~ 6 hours, first annealing furnace is risen to annealing temperature during annealing, again disk is put into annealing furnace, start timing when furnace temperature to be annealed reaches annealing temperature again and be incubated.

Described method, in step B, the final thickness of Casting Rolled Sheet after cold rolling is 0.5 ~ 2mm, and wherein the draught of single pass thickness is no more than 50%.

Described method, in step C, the diameter of disk is 60mm ~ 1000mm.

The deep drawability improving Casting Rolled Sheet deep-draw disk is mainly the homogeneity improving interior tissue, reduces anisotropy, controls the ratio of modulated structure and recrystallization texture well, improves unit elongation when proof strength requires.The tissue of cast-rolled block has that crystalline orientation is strong, top layer with central core grain size is inconsistent, component segregation greatly and the feature such as element supersaturation, in cold-rolled process, increase homogenization process can make slab tissue become even, for the anisotropy reducing disk is laid a solid foundation, the disk that deep drawability is good can be produced.If do not carry out homogenizing in cold-rolled process, pass through repeat-rolling, its deflection is made to be greater than 85%, the orientation of sheet material internal grain tissue and size can be made equally substantially to reach unanimity, adopt appropriate annealing process to process to disk again, disk can be made to form appropriate modulated structure and recrystallization texture ratio.In order to reduce rolling pass, enhance productivity, the cast-rolled block produced in recent years is more and more thinner, generally at about 6 ~ 7mm, adopts the Casting Rolled Sheet production deep-draw disk of this thickness specification to be unfavorable on the contrary producing.If disk is thicker, then deflection is inadequate, and interior tissue difference is large, and anisotropy is large, must increase homogenization process in cold-rolled process; If disk is thinner, then affect greatly by factors such as component segregations, deep drawability is bad, also must increase homogenization process in cold-rolled process.By increasing the thickness of Casting Rolled Sheet in the present invention, increase the scope can producing wafer thickness specification, furnace temperature is first risen to annealing temperature when disk is annealed and is put into by sample by the present invention simultaneously, shorten annealing time, serve the effect of high temperature rapid thermal annealing, disk interior tissue can be made to avoid reply and directly enter the recrystallize stage, the ratio being more conducive to modulated structure and recrystallization texture adjusts, the minimizing of annealing time turn avoid coarse grains, adds unit elongation while proof strength.

Technique effect of the present invention is, regular hotrolling process is generally through operations such as ingot casting melting casting-milling face-homogenizing heating-hot rolling-stamping-out-annealing, existing casting and roll process adopts casting to become to produce the techniques such as blank-cold rolling-homogenizing-cold rolling-stamping-out-annealing, casting is adopted to become to produce blank-hot rolling-stamping-out-annealing process in the present invention, compared with regular hotrolling process, eliminate the operations such as ingot casting, milling face, heating, hot rolling, improve production efficiency, reduce energy consumption, reduce production cost.Relative to existing casting and roll process, when cold rolling, eliminate homogenizing, shorten the soaking time of disk annealing, present method can produce the thick deep-draw disk of 0.5 ~ 2mm simultaneously, and the scope of application is larger.

Know-why

Embodiment

Below by concrete comparative example and embodiment, technical scheme of the present invention is described in further detail, but the present invention is not limited to these embodiments.

Adopt GB/T228-2002 tensile test at room temperature standard to detect sample mechanical property in each comparative example and embodiment, adopt GBT5125-2008 non-ferrous metal to rush cup test method and sample deep drawability is detected.

Comparative example one: Hot rolling produces 0.8mm thick 1A80 aluminium alloy deep-draw disk

The thick ingot casting of 50mm is cast into after being prepared burden by 1A80 al alloy component, hot rolling is carried out after being heated to 400 DEG C, carry out 400 DEG C/4h after rolling 5mm to anneal, diameter is become by the thick and stamping-out of plate rolling 0.8mm after annealing to be the disk of 675mm, anneal is carried out to disk, annealing temperature is 370 DEG C, and soaking time is 6 hours.

Comparative example two: existing casting and roll process produces 0.8mm thick 1A80 aluminium alloy deep-draw disk

Prepare burden according to 1A80 al alloy component of the present invention, common casting-rolling technology is adopted to roll into the Casting Rolled Sheet that thickness is 10mm, Casting Rolled Sheet is rolled down to 5mm thick after carry out 400 DEG C/4h and anneal, sheet material after annealing being rolled to the thick and stamping-out of 0.8mm becomes diameter to be the disk of 675mm, anneal is carried out to disk, annealing temperature is 420 DEG C, and soaking time is 6 hours.

Embodiment one: the inventive method produces 0.8mm thick 1A80 aluminium alloy deep-draw disk

Prepare burden according to 1A80 al alloy component of the present invention, common casting-rolling technology is adopted to roll into the Casting Rolled Sheet that thickness is 10mm, Casting Rolled Sheet is rolled to 0.8mm thick, diameter is become by cold-reduced sheet stamping-out to be the disk of 675mm, anneal is carried out to disk, annealing temperature is 420 DEG C, and soaking time is 6 hours.

Embodiment two:

Thickness is become to be the aluminum alloy plate materials of 9mm according to by casting after 1A80 al alloy component batching, through 5 passages, Casting Rolled Sheet is rolled down to 1.75mm thick, is become by cold-reduced sheet stamping-out diameter to be the disk of 740mm, anneal is carried out to disk, annealing temperature is 385 DEG C, and soaking time is 4 hours.

Embodiment three:

Prepare burden according to 1A80 al alloy component of the present invention, common casting-rolling technology is adopted to roll into the Casting Rolled Sheet that thickness is 11mm, through 8 passages, Casting Rolled Sheet is rolled down to 0.5mm thick, diameter is become by cold-reduced sheet stamping-out to be the disk of 675mm, anneal is carried out to disk, annealing temperature is 440 DEG C, and soaking time is 6 hours.

The 1A80 aluminium alloy deep-draw disk produced comparative example and embodiment carries out mechanical property to it and deep drawability detects, and detected result is as shown in table 1:

Table 1: the disk mechanical property that comparative example and embodiment are produced is with deep drawability detected result

Sample sequence	Tensile strength (MPa)	Unit elongation (%)	Earing rate (%)
				Comparative example one	78.5～81.3	39.2～41.5	2.1～2.7
Comparative example two	77.5～82.1	37.7～42.2	7.8～9.2
				Embodiment one	79.2～82.4	39.5～41.8	2.2～3.1
Embodiment two	78.6～81.9	38.9～41.6	1.9～2.8
				Embodiment three	78.3～82.2	39.8～42.8	2.3～3.2

Claims (3)

1. a production method for 1A80 aluminium alloy deep-draw disk, is characterized in that, comprise the following steps:

A, casting: al alloy component is become slab by casting after 1A80 ingredient standard batching, and the thickness of cast-rolled block is 9 ~ 12mm;

B, cold rolling: above-mentioned Casting Rolled Sheet is cold-rolled to the cold-reduced sheet that thickness is 0.5 ~ 2mm;

C, stamping-out: above-mentioned cold-reduced sheet stamping-out is become disk;

D, annealing: above-mentioned disk is annealed, annealing temperature is 380 DEG C ~ 460 DEG C, and soaking time is 2 ~ 6 hours, first annealing furnace is risen to annealing temperature during annealing, again disk is put into annealing furnace, start timing when furnace temperature to be annealed reaches annealing temperature again and be incubated.

2. method according to claim 1, is characterized in that: when in step B, Casting Rolled Sheet is cold rolling, the draught of single pass thickness is no more than 50%.

3. method according to claim 1, is characterized in that: in step C, the diameter of disk is 60mm ~ 1000mm.