JPS6144148A - Aluminum plate for photosensitive drum and its manufacture - Google Patents

Abstract

PURPOSE:To obtain an Al plate for a photosensitive drum having superior productivity and dimensional accuracy by heat treating an Al ingot contg. specified amounts of Fe and Si at a specified temp. and by subjecting it to hot rolling, optional cold rolling and finish annealing so as to regulate the average grain size on the surface of the resulting plate to a prescribed value or below. CONSTITUTION:The Al ingot contg. 0.3-1.0wt% Fe and 0.2-0.8wt% Si in <3 ratio of Fe/Si is homogenized at >=500 deg.C in one or more steps, hot rolled to <=15mm. thickness, cold rolled as required, and subjected to finish annealing to obtain an Al plate having <=35mum average grain size on the surface. The strength of the Al plate is effectively increased by incorporating 0.01-0.2wt% Cu. The Al plate for a photosensitive drum has superior resistance to surface roughening and corrosion, superior dimensional accuracy and productivity.

Description

[Detailed Description of the Invention] Industrial field of application i' 5e light is applied to aluminum for photosensitive tram ((approximately) , ・Regarding aluminum ruts for trams and their construction method.

[(・ し る 1 + 11 (, 'Q, '9:, Aluminum circle f1'5 product was made by extrusion or drawing 1:1),
In recent years, from the viewpoint of energy saving and n source saving, I have been tweeting 1., but the main reason for the high dimensions is 1. However, with the current machining force method, I have been having trouble with the monthly processing, especially since it is a consumable item, and the dimensions are 11'IJ and 7, and the photosensitive drum. There is a high demand for this.

However, processing of the body of aluminum beverage cans: Is this DI processing being carried out? (Drawingand)
l r.

The old NGL was generally developed for T+ and L cars, and one of them, JL'Lx, is aluminum.)1. +11
'1]1! '1! No. 1! l+cam, ■0.10. ,,
ili is extremely worn out;, +a V::
It exceeds the LIII odor of extruded or drawn vibrators. Thirdly, the processing is less than 1°, that is, in the case of a vibrator, the dimension t, 5 degrees and Table IAl 咀 1 change are inferior, so cutting processing is usually used. However, this 1/11 soil requires many steps such as rough cutting and (1: top cutting 1/γ), resulting in productivity of 11 tons and high cost.

This: Kota 1, DI processed Shino is 7th month of the month)
It has an excellent V surface (■ degree), and the cutting process can be omitted, resulting in lower costs.Therefore, there is a tendency to move from vibrators to plate [')l addition] two products. Shikajinaga I
,,What kind of materials can be used to perform DI processing?A material suitable for DI processing is required.

[Problem to be Solved by the Invention 1] The present inventor has constructed a photosensitive drum with strict dimensional accuracy by using the DI processing method described above and which can produce products with excellent precision in the 1-j method in RL. After conducting various tests on aluminum plates, we developed aluminum for photosensitive drums with a strict 111 degree rating and 19 manufacturing methods, which are suitable for this photosensitive drum. In addition, the characteristics of the presence of spiritual water on the aluminum for photosensitive drums manufactured by the DI method are as follows.

(1) Squeezability.

(2) Stretchability.

f 3) IIIL roughness (fine crystal grains).

(1) Ironing workability.

(5) Surface J11 degrees.

(6) Dimensions tl’i degrees such as straightness and roundness.

(7) Corrosion resistance.

Among the characteristics of suzuku, in particular, (3) roughness, (6)
) Dimensional viscosity and (7) Corrosion resistance are probably important properties.
``+ fruit, ironing process 11 roughness on the surface, black dots on the waist, white spots are kasa no ko'; sex: rough skin that causes r+
In addition, since V noise above 1 degrades copying performance, it has excellent f± resistance, and furthermore, 4.
・We have developed an aluminum plate material for photosensitive drums and a WM method for it that can make j uniform and provide clear copies (strict dimensions that are important for j+).

[Step 1 to resolve the problem] The aluminum plate material for a photosensitive tram and the manufacturing method thereof according to the present invention include (I) Fe O,3-1,0 w1%, Si O,2-
The first invention is an aluminum temporary material for a photosensitive tram, which is characterized in that it contains 0.0, Su+L%, Fe/Si < 3, and the average crystal grain size on the plate surface is 35 μIll or less, (2) FeO, 3-1,0ilt%, SiO,
Contains 2-0, Svt%, Cu O, 01-0.2wk% (i, and 1'e/'Si<3, and the average crystal grain size on the plate surface is 35 μIll Lj, below. A second invention provides an aluminum plate for a sensitive drum characterized by the following: (3) FeO,: l~1.0wt%, SiO
, 2-0.3 wk%, Fe/Si bar 3', average L11 crystal diameter of the plate surface is 359 or less, and the drawing ratio (7 u/litre) /bo/chi diameter) 2 and ear rate 3
A third invention provides an aluminum plate material for a photosensitive drum characterized in that the content of Fc is within %, (4) Fc0.3-1.0wt%, SiO,2-
It contains 0.0, Sn1%, CuO, O1-0.2%, and ['c/Si < 3, the average crystal grain size on the plate surface is 35 μ = a fJ, and the scratch ratio is below. (Frank diameter/Bonna diameter) 2 Toe ratio 3
(5) FcO, 3-1,0wk%, S + 0.2
Contains -0.8wt%, (°°7°°°.

A certain aluminum casting board was heated to a temperature of 500°C or higher. Then, conduct a one-man J2 heat treatment and then perform hot rolling to reduce the thickness to 151mm.
It is characterized by carrying out cold rolling or finishing annealing to make the eastward crystal grain size of the plate surface 35μ or more. The 1A manufacturing method of aluminum plate material for photosensitive drums is explained in the fifth A and -
This is because it consists of five inventions.

The aluminum VI material for photosensitive drums and the method for producing the same according to the present invention has relatively low strength for photosensitive drums,
Because the press capacity is small and small, the productivity is reduced by one point, and the dimensions are also reduced by one point.

Regarding the required 1 and Y properties of the aluminum plate for photosensitive drums explained above, (3+ surface roughness is i
Due to the formation of six-set crystal grains, the corrosion resistance of (7)
By adjusting the content of 'c, (6) method 11
The first degree was achieved by improving the directionality of the plate material (L (, directionality, ga, stability)).

Now, to explain the technically difficult and important directionality improvement to achieve dimensional viscosity, this directionality improvement improves dimensional accuracy, and the selvage rate is ±3% (drawing cup size). The occurrence of mountain peaks is +, 0 to 45° direction with respect to the rolling direction.
90° direction is - ear).

When it exceeds the 71 modulus f+'i degree, it decreases rapidly, and this is due to P
This is because the deformation forces at each location in the l+ and S+ force directions (parallel to the rolling direction of the plate material, and [5°, perpendicular to it) differ greatly, and this effect appears during ironing after drawing, resulting in poor dimensional accuracy. It is considered to be connected.

However, there are some restrictions in manufacturing this photosensitive drum. Namely, since the drum is long, it is necessary to press capacity to form a thick plate material, but generally speaking, it is about 1. However, it is difficult to stably produce conventional pure and thick dielectric materials with low directionality. For example, there is always unevenness in the ears in the width direction and length direction within the fill, and the 1st case of 11011 is -6 to -1% true: (・-
As a result, the yield of plate material decreases by 1 month, and furthermore, the yield after molding decreases. 2 Therefore, it is important to improve the directionality for dimensional accuracy, and by applying sulfur (11) to improve the grain size and corrosion resistance, it is possible to make the aluminum sheet material excellent for photosensitive drums. .

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

Fe is an important element that affects orientation (edge ratio), grain refinement, and corrosion resistance, and orientation is determined by the interaction with Sl, but the content is 0.3 wt%.
With non-114, it is difficult to obtain stable and low directionality (within ±3%), and it is less effective in grain refinement. If the content exceeds OvL%, a problem will arise in corrosion resistance. Therefore, the Fe content is set to 0.3 to 1.01%.

Although the effect of Sl is small when it is contained in jJ1 alone, it has an effect on low directionality (within ±3%) and A゛constant growth jψ due to the ratio with Fe and Fc/Si, and the content of Sl is 0.2wL. If it is less than 0.0%, the ears within the fill will vary and there will be problems with stable production. If the S1 content exceeds SwL%, it becomes difficult to obtain paper force tropism. Therefore, the S1 content is 0.2 to 0.
．． Let it be Si%.

Furthermore, if the ratio of Fe/Si exceeds 3, variations in the edges tend to occur, so Fc/Si is set to 3 or less.

Cu has an internal malleoli to improve strength, and the content is 0. O1wL%
If the content is less than 0.2 wt%, this effect will be small, and if the content exceeds 0.2 wt%, problems will arise in corrosion resistance. Therefore, the Cu content is set to 0.01-0.2 wL%.

Although elements other than these elements do not adversely affect the aluminum plate material for photosensitive drums according to the present invention if they are at the level of impurities, their content is preferably regulated to 0.1% or less.

The average crystal grain size is set to 35 μI or less, which is directly related to the roughness of the surface, and if it exceeds 35 μm, it will cause poor surface roughness during ironing. Therefore, the average crystal grain size is set to 35 μm.

In addition, the aperture ratio (blank diameter/punch diameter) 2r ear rate is 3%
The reason why it should be within 3% is that if it exceeds 3%, the dimensional accuracy will suddenly drop to 1 sq. Therefore, the aperture ratio is set within 3%VL.

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

By performing the homogenization heat treatment at a temperature of SOf)'C or higher, the 45° direction edge (+IT) is increased in the product board to obtain a low directionality. , but if it is carried out in two stages, it is possible to reduce the 70-marks that occur during drawing.

This homogenized heat outside Pl! Hot rolling is then carried out, and in order to reduce the thickness of the plate to 15 mm or less, hot rolling is best completed in several passes to 10-odd passes; In this case, some recrystallization occurs due to the heat generated during hot open rolling, causing variations in the structure in the thickness direction, and then cold rolling is performed as necessary and final annealing is performed. If the influence is increased, it may also cause JII dogization of crystal grains and mixed grains. Therefore, the plate thickness at the end of hot rolling must be 15 mm or less.

Note that performing cooling treatment such as water cooling during hot rolling is even more effective.

Example 1 An example of an aluminum plate material for a photosensitive drum and a manufacturing method thereof according to the present invention will be described.

Real paper old (1) Fe 0.55wL%, Si 0.33wL
%, remaining δ and ■, (2) Fe O, 20wk%, Si
O,05wt% balance 1i5AI, (3) Fe 0
．． 59w1%, SiO, 08wt% balance A1, [(
1) is aluminum according to the present invention, (2) is 107 ()
, (3) is 1it)0). ).

These large ingots were subjected to homogenization heat treatment at 580° (:X4Hr), hot rolled into a plate with a thickness of 8 mm, then cold rolled into a plate with a thickness of 3 mm, and further,
Finish annealing was performed for 3 G (1'CX 2 Hr).

The 1, Y properties of the plate material thus obtained are shown in Table 1.
.

Table 1 [ * Squeezing ratio 50% As is clear from this Table 1, the plate material of the present invention has little variation in the selvage within the fill, and the selvage ratio is within ±3%. 1070 used for comparison] 1
(No. 10 is an alloy with a typical content and ratio of ingredients that is commonly used, and there is a large variation in the selvage, which deviates significantly from ±3%, indicating that the plate material according to the present invention is 1. .

Example 2 The 8I thick plate material of the heat-rolled slope in Paper Example 1 was made into II thickness by cold rolling, and then 30+1'(:X211'
Finish annealing was performed.

The material properties of the obtained plate material are V1゛↓Second about circularity.
Shown in the table.

In addition, in order to measure the roundness, l + aJi was squeezed and 53III + 1φX ] S IJll
lml circle t, t was 1 yaso.

Table 2 As is clear from Table 2, the plate material according to the present invention is:
It can be seen that the average crystal grains are small, the selvage ratio is low, and the roundness is J: 6 steps better than that of the comparative example.

[Effects of the Invention 1] As described above in detail, the aluminum plate material for photosensitive drums according to the present invention and its aluminum plate material? i! Since the manufacturing method has the above structure, it has excellent surface roughness, dimensional accuracy, and corrosion resistance as an aluminum plate material for photosensitive drums.
Moreover, it is a manufacturing method with excellent productivity.

Claims (5)

[Claims] (1) Fe0.3-1.0wt%, Si0.2-0.8
% by weight, Fe/Si<3, and an average crystal grain size on the plate surface of 35 μm or less. (2) Fe0.3-1.0wt%, Si0.2-0.8
An aluminum plate material for a photosensitive drum, characterized in that it contains 0.01 to 0.2 wt% of Cu, Fe/Si<3, and an average crystal grain size on the plate surface of 35 μm or less. (3) Fe0.3-1.0wt%, Si0.2-0.8
wt%, Fe/Si < 3, the average crystal grain size on the plate surface is 35 μm or less, and the selvedge ratio is within 3% at a drawing ratio (blank diameter/punch diameter) of 2. Aluminum plate material for photosensitive drums. (4) Fe0.3-1.0wt%, Si0.2-0.5
wt%, Cu0.01-0.2wt%, Fe/Si<3, the average crystal grain size on the plate surface is 35 μm or less, and the curvature ratio (blank diameter/punch diameter) is 2. An aluminum plate material for photosensitive drums characterized by a selvage rate of 3% or less. (5) Fe0.3-1.0wt%, Si0.2-0.5
wt% and Fe/Si<3 is subjected to one or two stages of homogenization heat treatment at a temperature of 500°C or higher, and then hot rolled to a plate thickness of 15 mm or less. A method for producing an aluminum plate material for a photosensitive drum, which further comprises performing final annealing with or without cold rolling to make the average grain size of the plate surface 35 μm or less.