JPS6144150A - Aluminum sheet material for photosensitive drum and its manufacture - Google Patents

Abstract

PURPOSE:To obtain the titled Al sheet material superior in productivity and size precision, by heat treating Al ingot contg. respective specified quantities of Mn, Mg, Fe at limited temp. or above, then hot rolling, if necessary cold rolling, then finishing annealing said sheet to regulate average crystal grain diameter of sheet surface to a prescribed value or below. CONSTITUTION:Al ingot contg. 0.13-0.4wt% Mn, 0.1-0.4% Mg, 0.2-1.0% Fe is soaking heat treated by one step or more at >=500 deg.C, then hot rolled to <=15mm. plate thickness. Next, said plate is finishing annealed, with or without cold rolling, to obtain said Al sheet material having <=35mum average crystal grain diameter on sheet surface. It is desirable to regulate to contraction ratio of 2, <=3% ear ratio in the obtd. sheet. In such a way, said Al sheet material having appropriate strength, average crystal grain size and superior strength and size precision can be manufactured with good productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aluminum plate material for photosensitive drums and a method for manufacturing the same. Regarding its manufacturing method.

[Prior art] Aluminum circular products have traditionally been made by extrusion or drawing, but in recent years, from the viewpoint of energy and resource conservation, there has been a demand for thin walls, high dimensional accuracy, and lower prices. Therefore, it has become difficult to deal with this problem using conventional processing methods.In particular, there is a high demand for photosensitive drums, which are consumable items and have a strong odor due to their dimensions. be.

However, the processing of the body of aluminum beverage cans:
DI processing method (Drawing and
Ir.

J1 Group G) is a general i-kokuma, +'LIII developed Jt
Tachinote' is there, its\] method +1'i JX is aluminum-1. Side wall thickness (1111n+111): 111
o! ((After one dormitory, J5 is extremely good, and the precision of extruded or drawn pipes has been surpassed.

Furthermore, processing 1′? Low.

In other words, in the case of pipes, the degree of dimensional fit and surface temperature are poor, so cutting is usually performed. It becomes a cost.

2J especially jt L ′C, D I processed t small thing is τ
[Book]: Excellent precision and V surface use, cutting process can be omitted, resulting in low fusd. Therefore, there is a tendency to move towards I) l processed products that handle pipes h and h, but due to the lack of durability, it does not mean that DI processing will produce a 1q quality product no matter what material is used. , a key material suitable for DI processing is required.

[Problems to be solved by the invention] The present inventor has solved the above problem by solving the above-mentioned conventional dimensions 1, 1 and 1.
Utilizing the DI processing method that produces products with excellent i-degrees, r
Forgery of a detailed photosensitive tram with 1-2j text; 1:l
, To the aluminum suitable for this photosensitive drum: 2 9. Conducted a test 0n of the type that appears, = I method I; Law fishing: There are 11 shots.

Incidentally, the 1 and 7 properties required for aluminum for photosensitive trams fabricated by the DI processing method are as follows.

(1) Squeezability.

(2) Stretchability.

(3) Skin roughness (4) Processability.

(5) Surface reciprocity.

(6) Straightness, perfect circle 1i Shade size mackerel ti + (7) ^ (corrosion resistance.

Among these characteristics, in particular, (3) Jt roughness 11, (
6) Dimensions Jti degree 9r (7j corrosion resistance is important 1.)
It is gender.

Therefore, the name of the present invention is based on further research using a small saw. As a result, during ironing process: the surface is made uneven, 1. lY, fortune 5,
White spots ゛,・γ modification Ij f: 1ilL which causes good
It has good corrosion resistance, and since scratching reduces copyability, it has excellent corrosion resistance.
A certain good dimension fl'i degrees, which is important for making the distance between V and V, uniform and obtaining a clear copy, is obtained,
In addition, the drum has a high strength characteristic of 1:1 ratio (11:1).
He developed a new method for making the trousers.

[Means for Solving the Problems 1 The photosensitive drum aluminum plate material and the manufacturing method thereof according to the present invention are as follows: (1) Contains 100,1 to 0.4wk%, 1gO,1 to
The first aluminum plate material for photosensitive drums contains 0.4-t%FcO,2-1.0w1% and has a characteristic that the average crystal grain size on the plate surface is 35 μm or less. Invention: (2) MnO, 1-0.・1 company%, 81ε0.1~
0.4ult% ['e O,2-1,0w1% included. , 1 product particle size: 35μ
The second invention and waist (31Mn O, -1~1.0w1%, 1go, 1~
0.・Aluminum casting containing 1.11% e 0.2~1.0wt%!1 slope, 5 +1 tl
'C' - One or two stages of heat treatment at a temperature of 1, followed by hot rolling)
t is 5.1iill or less, and further annealing is performed twice without or without cold open rolling to make the diameter of the crystals on the sheet surface to be less than or equal to 5. The present invention consists of three inventions: (1) a method for producing an aluminum mold material for lamina;

The aluminum plate material for photosensitive drums and the method for assembling the same according to the present invention have high strength for use in conventional drums, are excellent in productivity, and are similar to the aluminum plate material that has been used in the 11th method 1□). It's the manufacturing method.

Regarding the tentatively required properties of aluminum for photosensitive tram as explained above, (:()force□,;situationnot('l is 1':, By granulating 11 pieces of 11 pieces, (7)
Endurance 1. ° Also contains 1゛1・k 57 PC's f1°
:11. 1y circle ζ:koyo)),za','+::+t
) dimensions? +'i If has been achieved by improving the temporary I/J tropism (low force tropism and stability).

1.Tokyo, it is technically a national challenge to achieve dimension accuracy. Regarding the important direction change, Etsumeiji said that this direction improvement will improve the dimension 11'7 degree. and ears (
±3% (the occurrence of peaks in the crest is in the direction of the rolling force)
5° force direction is +, 0~9()゛direction is - ear), the dimension ↑+'1 degree or so, it decreases horribly, and this Jt is 1・γ( Parallel to the rolling force direction of the plate material, ・i5°
, 1α angle) The deformation force in one corner differs greatly. It is considered that 1 degree defect occurs when nu I, T appear, and dimension b' is 1 degree defective.

However, there are some restrictions in manufacturing this photosensitive drum, namely, because the drum is long, it may be related to the press ability in order to form a thick plate material, or in general, the drum is long Is it necessary to have a certain degree of low strength?However, with conventional pure A1,
F″7°Thickness Material″1 Height direction 2°°0・Safety 2
'-'Raw'I'' is 1 t.For example, in the case of 111 to 511 old), the width direction and length J direction within the fill are -6 to -1% IH-
This means that the plate material will be reduced by 9 points, and furthermore, the reduction in stiffness after forming will be t?

Therefore, it is important to change the direction in order to change the size, and by focusing on this, we are improving the strength, fineness in one product, and maintaining corrosion resistance. [j It becomes Koshino.

The components and component ratios of the aluminum plate material for photosensitive drums according to the present invention will be explained.

~111 ensures appropriate strength and Japanese sashimi with htg 11.
It is an element that contributes to lowering the directionality due to use, and the content j + 4
If it is less than 0.1 wt%, it will have little effect on strength and low directionality due to mutual interaction, and if the content exceeds 0.1 wt%, the strength will become too high, leading to overload of press (( A problem arises.Therefore, the N111 content is 0.
．． N1g with 1~0.4 company% has the same effect as \1n, and the content is 0.1WL
If the content is less than 0.4u+L%, it will have little effect on strength and low force propensity due to the addition of 1.
This causes an overload on the press capacity and also causes scorching (MgO) during ironing. Therefore, the Mg content is set to 0.1 to 0.4 L%.

Fe is an element that contributes to grain refinement and low orientation, and if the content is less than 2 tnt%, it has little effect on grain refinement and low orientation. Out%
If the thickness exceeds ¥2'11, a problem will arise in corrosion resistance.

The Fe content is 0.2-t, owL%.

If the elements other than these elements are at the level of impurities, the aluminum plate for photosensitive drums according to the present invention (although they do not give bad IR to A), the content is Cr, Zn, and 'r1 is 01.
1% or less, Cu is 0.2wL% or less, S- is 0.2wL
It is best to limit it to less than %.

There is a way to make the average crystal grain size less than 35 liters, but this 7
1 is directly related to the roughness of the skin, and if it exceeds 35μc, it will result in poor skin roughness during ironing. Therefore, the average crystal grain size is 35 μm.

In addition, the selvage ratio is 39 at a drawing ratio (blank diameter/punch diameter) of 2.
6 or less, if it exceeds 3%, it will be removed.”Z
, ljh i decreases. 1, the aperture ratio is within 3%.

Next, a method for manufacturing an aluminum plate material for a photosensitive drum according to the present invention will be explained.

Homogenization heat treatment is carried out at a temperature of 5 +'l (1'C or higher), thereby producing a 15° direction edge (+I) in the product board.
There is a need to increase rj to achieve a low force direction of 1 (1), and this homogenization heat treatment is performed in one or two stages,
When performing the drawing in two stages, it is possible to reduce the number of 70-marks that occur during the drawing process.

Since hot rolling is performed after this homogenization heat treatment,
In order to increase the thickness of the plate to 15m++ or more during hot rolling, it may be necessary to finish the plate in several passes to 10 passes.
1゛V, which exceeds m+a, is the difference between the moon and the moon.
7) Partial recrystallization occurs due to N, and the plate thickness direction r■h
(Do the rasoki ILL, then do it as necessary)
Cold rolling IS and final annealing are also performed. This causes a total of 15 grains, an increase in the size of the crystal grains, and 415 grains. Therefore, 2. The plate 1'-l facing the end of rolling must be at least 15 m thick.

Note that it is even more effective to perform cooling treatment such as water cooling during hot rolling.

1 Practical Example 1 An example of a method for preparing an aluminum temporary phase for a photosensitive tram according to the present invention will be described.

Actual example A small ingot (5n
IO,), subjected to homogenization heat treatment at 550°C Each product was made up of aluminum and 70% of each product.

The properties, orientation and average grain size of this plate material are shown in Table 2.

In the second and i columns, Nos. 4, 7, and 7 are aluminum alloy plate materials for photosensitive drums according to the present invention, and Ike is a comparative material.

As is clear from this Table 2, No, 4, No.

7 satisfies the directionality (within ±3%), the average grain size (35μ or less), and the strength is No. 1 and the purity of t\1
, so there is no problem of insufficient press capacity.

In addition to this, comparative materials No. 1, No. 2, No.

3, the directionality and average crystal grains do not satisfy the values specified for the plate material according to the present invention, and No. 5, the directionality and average grains do not satisfy the values specified for the plate material according to the present invention, G is directionality, is the average crystal grain satisfied? No, 5, No, G
Since both have high strength, it is thought that this may lead to insufficient press capacity or processing defects.

(Effect of the invention 1 As explained above, the aluminum alloy plate material for photosensitive drums and the LA manufacturing method thereof according to the present invention have a two-legged structure, so that the obtained photosensitive drum Jl aluminum plate material The appropriate strength is <iL, the directionality is 1, and the proper ・Iε average ν3 grains are made into 1, 1, 1, 2, 3, and 3. left f+'
The present invention has the effect that a photosensitive tram having an IA can be manufactured.

Claims (3)

[Claims] (1) Mn0.1-0.4wt%, Mg0.1-0.4
An aluminum plate material for a photosensitive drum, which contains 0.2 to 1.0 wt% Fe and has an average crystal grain size on the plate surface of 35 μm or less. (2) Mn0.1-0.4wt%, Mg0.1-0.4
It contains 0.2 to 1.0 wt% Fe, and the average crystal grain size on the plate surface is 35 μm or less,
An aluminum plate material for a photosensitive drum, characterized in that the selvage ratio is within 3% at an aperture ratio (blank diameter/punch diameter) of 2. (3) Mn0.13-0.4wt%, Mg0.1-0.
An aluminum ingot containing 4wt%Fe0.2 to 1.0wt% is subjected to one or two stages of homogenization heat treatment at a temperature of 500℃ or higher, and then hot rolled to a plate thickness of 15mm or less. A method for producing an aluminum plate material for a photosensitive drum, further comprising performing finish annealing with or without cold rolling to make the average crystal grain size of the plate surface 35 mm or less.