CN1900336A - Aluminum alloy pipe for high purity and high precision light sensitive drum base material and producing method - Google Patents
Aluminum alloy pipe for high purity and high precision light sensitive drum base material and producing method Download PDFInfo
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- CN1900336A CN1900336A CN 200610036899 CN200610036899A CN1900336A CN 1900336 A CN1900336 A CN 1900336A CN 200610036899 CN200610036899 CN 200610036899 CN 200610036899 A CN200610036899 A CN 200610036899A CN 1900336 A CN1900336 A CN 1900336A
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Abstract
The present invention is a kind of aluminum alloy pipe for making photosensitive drum and belongs to the field of non-ferrous metal pipe manufacture. The aluminum alloy pipe is made of material comprising Si 0.20-0.23 weight portion, Mg 0.45-0.50 weight portion, Fe 0.01-0.15 weight portion, impurity elements S and P 0.00-0.01 weight portion and Al 99.34-99.11 weight portions. It is produced through smelting, refining, in-situ fining, in-situ deairing, filtering, casting to form ingot, annealing, heating ingot to peel, extruding breakdown, quenching, finishing, drawing, post-finishing and other steps. The aluminum alloy pipe has low impurity content, and is suitable for manufacturing high purity and high precision photosensitive drum and similar products.
Description
[technical field]:
The present invention relates to a kind of high-purity, high precision light sensitive drum base with aluminium alloy pipe and manufacture method, belong to extraordinary non-ferrous metal tubing production.
[technical background]:
OPC is writing a Chinese character in simplified form of organic photoconductor (Organic Photoconductor).The OPC drum is to utilize the OPC coated materials to form a kind of electrooptical device in the accurate aluminum tube surfaces of conduction, and it is the core component of laser printer, digital duplicating machine.Surface and dimensional precision to the aluminium-alloy pipe material before applying have very high requirement: the above removal of impurity of 5 μ m is greater than 98% in the finished product microstructure, and the diameter of general impurity that does not pass through the special processing product or metallic compound is about 20 μ m.Tube outer diameter requires tolerance to be ± 0.05mm, and it is ± 0.02mm to be difficult to reach requirement with produced in conventional processes that wall thickness requires tolerance.Because this product is extremely tight to preparing raw material and properties for follow requirement, domestic manufacturer can't produce, and required this kind tubing mainly relies on external import.Can reach above-mentioned service requirements after following extraordinary prescription and art breading, this is an original intention of the present invention.
[summary of the invention]:
The object of the present invention is to provide a kind of high-purity, high precision light sensitive drum base with aluminium alloy pipe and manufacture method, to satisfy the needs of domestic and international photosensitive drums production industry.It is by strict each elementary composition of control; Through melting, refining, in steps such as line thinning, online degasification, once filtration, secondary filtration, casting, homogenizing annealing, ingot casting heating, the online hot soarfing skin of ingot casting, hot isothermal extrusion blooming, quenching, finishing, drawing, follow-up finishing and make.The hot soarfing skin and the isothermal extrusion technique of independent development particularly in the subsequent material moulding process, have been used, the hot soarfing skin significantly reduces oxidation and the surface imperfection after the second-heating, the isothermal extrusion technique makes the goods temperature out accurately be controlled at 530 ± 5 ℃, makes goods structure property homogeneous.Technical scheme of the present invention is achieved in that at first, produces aluminium, makes aluminium alloy pipe then.What its first technical characterstic was an aluminium alloy pipe by following weight fraction is elementary composition:
Silicon (Si) 0.20～0.23;
Magnesium (Mg) 0.45～0.50;
Iron (Fe) 0.01～0.15;
Impurity element (S.P) 0.00～0.01;
Aluminium (Al) 99.34～99.11.
The manufacture method that its second technical characterstic is aluminium alloy pipe in turn includes the following steps:
A, fusion-casting process:
With the moiety weighing that subsidiary material such as primary aluminum, aluminium-silicon master alloy, magnesium ingot are pressed product, aluminium ingot and proportioning of waste should be controlled at 11: 1, the smelting furnace of then primary aluminum, aluminium-silicon master alloy being packed in certain sequence.Temperature of fusion is controlled at 730～760 ℃.Treat after alloy fully melts magnesium ingot to be made these raw material fusings with pressing the magnesium cover to be pressed into molten aluminium, carry out the refining first time afterwards in smelting furnace, add refining agent, degasification gas is argon gas, skims after refining is intact.Carry out three refinings altogether.Leave standstill melt, time of repose 10～15Min after refining is intact.725 ℃ of control melt temperature outs, melt goes out that holding furnace is laggard goes into runner, be enabled in the line thinning system, the Al-5Ti-B silk is added in the chute with the speed of 1.2～1.4kg/t flow, start online gas-freeing system, feed high-purity argon gas by high speed rotating, ( 1～4mm), and melt flows into ceramic filter plate and carries out melt filtration afterwards gas to be sheared be broken into micro bubble.Carry out online secondary filtration through special porous pipe filter again; Final melt flows into the hot direct casting of level such as shunting disk begins to carry out and causes the aluminium ingot casting.
B, homogenizing, water-cooled are handled, sawing:
The ingot casting that casting is come out carries out the homogenizing processing, eliminates non-equilibrium crystalline dendrite in the castingprocesses.
Ingot homogenization annealing temperature: 550～570 ℃
Ingot homogenization annealing time: 4～8 hours
It is cold after homogenizing handled the ingot casting of coming out of the stove to be carried out mist, and cooled ingot casting prescinds
C, ingot casting heating
Heating temperature: 420～460 ℃
Heat-up time: 2～3 hours
D, ingot casting hot soarfing skin
Ingot casting with surperficial peeling 2.5～3.0mm, is optimized the aluminum products extrusion process after heating, eliminate the secondary oxidation of ingot casting in heat-processed, improves the end article quality.
E, the extruding of hot isothermal, press quenching
Extrusion temperature: 410～450 ℃
Extrusion speed: 15～20m/min
Quenching mode: air-cooled
Quenching temperature: 525～535 ℃ (promptly 530 ± 5 ℃)
F, finishing
Through stretching rectification, sawing obtains pushing material,
G, drawing, follow-up finishing
After improving tube surfaces precision, roller leveler aligning, follow-up washing oil sawing, drawing can obtain aluminium alloy pipe of the present invention.
Advantage of the present invention is as follows: (one) is because photosensitive drums is tighter to surperficial specification of quality with aluminium tube, defectives such as any impure point and metallic compound can not appear in tubing surface in the following process process, this production decision is set about from the source, in order to improve the material purity, the usefulness of each impurity element such as Fe etc. is measured lower limit.To the strict control of the required starting material of melting, reduce the use of waste material in addition.On the source, guaranteed the purity of material like this.(2) fusion-casting process of conventional aluminum alloy is: melting, refining, filter at line thinning, ceramic filter plate, casting; The conventional ceramic screen plate can only filter out in the melt granularity greater than being mingled with and compound more than the 20 μ m, this programme filters on the basis at former ceramic filter plate has increased special porous tubular type filter for installation, uses to be mingled with behind this device or compound size can be filtered 98% more than 5 μ m.This process makes the purity of material obtain to a great extent raising again.Can be referring to Fig. 3 and Fig. 4.And referring to table 1 and table 2.
(3) in the production of conventional aluminum alloy pipe for the surface imperfection of removing ingot casting generally be the casting after turning surface, be heated to extrusion temperature then and carry out extrusion blooming.This manufacture method is by the hot peeling machine of special aluminium alloy cast ingot, with ingot casting be heated to temperature required after, remove surface 2.5～3.0mm with hot peeling machine, the intact back of peeling ingot casting enters extrusion machine immediately and carries out hot cogging.Can eliminate the secondary oxidation of ingot casting in heat-processed by the change of this technological process, be improved a lot in end article inside and surperficial purity.
Table 1 compound distributes
| Mean diameter (μ m) | Density is (individual/mm 2) | |
| 6063 | 1.70 | 4569 |
| 6063L | 1.05 | 1348 |
Annotate: tradition is 6063, and alloy of the present invention is 6063L
Table 2 requires standard and this production method to produce product actual measurement size
| Project | Specification standards | The specification actual measurement | Survey instrument |
| External diameter | 30.3-0.05+0.05 | 30.32~30.34 | Vernier callipers |
| Internal diameter | 28.5-0.02+0.02 | 28.51~28.52 | Vernier callipers |
| Total length | 352-0.2+1 | 352.06~352.1 | Vernier callipers |
| Right alignment | ≤0.04 | 0.02 | Dial gauge |
| Linearity | ≤0.08 | 0.04 | Dial gauge |
[description of drawings]:
Further set forth technical scheme of the present invention according to description of drawings and specific embodiments below.
Accompanying drawing 1 is a manufacturing flow chart of the present invention;
Accompanying drawing 2 is aluminium-alloy pipe section product metallographic microstructure image of the present invention; This microstructure appears mode: and the Keller reagent corrosion of polishing back (15～20S), use flushing with clean water then, dry up with fan at last.
Accompanying drawing 3 is conventional formulation and production method product dark field image, and the impurity that it shows and the diameter of metallic compound are bigger, reach 20 μ m, and close.
Accompanying drawing 4 is product dark field image of the present invention (compound distributions), the impurity that its shows seldom and the diameter of metallic compound less,＜5 μ m, and amount is less;
Accompanying drawing 5 is conventional formulation and production method and aluminium alloy pipe metallic compound scatter chart of the present invention, and A6063 is traditional method curve; B6063L is a graphic representation of the present invention.
[specific embodiments]:
Embodiment 1:
Get 0.20 part silicon (silicon adds with aluminium silicon master alloy form, and Si content is about 11～12%) earlier, 0.46 part magnesium (magnesium adds with magnesium ingot, Mg content 〉=99%), surplus is that aluminium (aluminium adds with aluminium ingot, Al content 〉=99.7%) is stand-by.
Melt then, refining.
Aluminium, silicon are put into smelting furnace, and be heated to 740～760 ℃, magnesium is made these raw material fusings with pressing the magnesium cover to be pressed into molten aluminium, carry out the refining first time afterwards in smelting furnace, add refining agent, degasification gas is argon gas, skims after refining is intact.Carry out the refining second time, refining temperature in the metaideophone holding furnace after being preheated to melt more than 800 ℃: 740 ℃, refining time: 25Min, refining agent consumption: 1.5Kg/T, high-purity argon gas (content: degasification 〉=99.999%).Carry out refining for the third time afterwards, the refining parameter is with refining for the second time.Leave standstill melt, time of repose 10Min after refining is intact.
Melt goes out holding furnace and carries out in line thinning, degasification, filtration then.
720 ℃ of control melt temperature outs, melt goes out that holding furnace is laggard goes into runner, be enabled in the line thinning system, the Al-5Ti-B silk is added in the chute with the speed of 1.2kg/t flow, start online gas-freeing system, feed high-purity argon gas by high speed rotating, ( 1～4mm), and melt flows into ceramic filter plate and carries out melt filtration afterwards gas to be sheared be broken into micro bubble.Melt flows into the porous pipe filter again and filters afterwards.Final melt flows into the hot direct casting of level such as shunting disk begins to carry out and causes the aluminium ingot casting.
Carry out homogenizing processing, water-cooled then.
Ingot homogenization annealing temperature: 520～570 ℃
Ingot homogenization annealing time: 4～8h
Ingot casting heating then, hot soarfing skin
Ingot casting Heating temperature: 420～450 ℃
Ingot casting heat-up time: 2～3h
Hot soarfing skin thickness: 2.5mm
Push then, quench
Extrusion temperature: 410～450 ℃
Extrusion speed: 15～20mm/min
Quenching mode: air-cooled
Quenching temperature: 525～535 ℃
Then extrusion billet is carried out finishing
Then blank after the finishing is carried out drawing, aligning, washing oil processing.
At last tubing is carried out sawing and become client's desired length, can obtain aluminium alloy pipe of the present invention.
Embodiment 2:
Get 0.22 part silicon (silicon adds with aluminium silicon master alloy form, and Si content is about 11～12%) earlier, 0.50 part magnesium (magnesium adds with magnesium ingot, Mg content 〉=99%), surplus is that aluminium (aluminium adds with aluminium ingot, Al content 〉=99.7%) is stand-by.
Melt then, refining.
Aluminium, silicon are put into smelting furnace, and be heated to 750～760 ℃, magnesium is made these raw material fusings with pressing the magnesium cover to be pressed into molten aluminium, carry out the refining first time afterwards in smelting furnace, add refining agent, degasification gas is argon gas, skims after refining is intact.Carry out the refining second time, refining temperature in the metaideophone holding furnace after being preheated to melt more than 800 ℃: 740 ℃, refining time: 25Min, refining agent consumption: 2.0Kg/T, high-purity argon gas (content: degasification 〉=99.999%).Carry out refining for the third time afterwards, the refining parameter is with refining for the second time.Leave standstill melt, time of repose 15Min after refining is intact.
Melt goes out holding furnace and carries out in line thinning, degasification, filtration then.
725 ℃ of control melt temperature outs, melt goes out that holding furnace is laggard goes into runner, be enabled in the line thinning system, the Al-5Ti-B silk is added in the chute with the speed of 1.4kg/T flow, start online gas-freeing system, feed high-purity argon gas by high speed rotating, ( 1～4mm), and melt flows into ceramic filter plate and carries out melt filtration afterwards gas to be sheared be broken into micro bubble.Melt flows into the porous pipe filter again and filters afterwards.Final melt flows into the hot direct casting of level such as shunting disk begins to carry out and causes the aluminium ingot casting.
Carry out homogenizing processing, water-cooled then.
Ingot homogenization annealing temperature: 560～570 ℃
Ingot homogenization annealing time: 4～6h
Ingot casting heating then, hot soarfing skin
Ingot casting Heating temperature: 450～460 ℃
Ingot casting heat-up time: 2～2.5 hours
Ingot casting hot soarfing skin thickness: 3mm
Push then, quench
Extrusion temperature: 440～450 ℃
Extrusion speed: 15～18mm/s
Quenching mode: air-cooled
Quenching temperature: 525～535 ℃
Then extrusion billet is carried out finishing
Then blank after the finishing is carried out drawing, aligning, washing oil processing.At last tubing is carried out sawing and become client's desired length, can obtain aluminium alloy pipe of the present invention.
Claims (2)
1, high-purity, high precision light sensitive drum base is with aluminium alloy pipe and manufacture method, it is characterized in that aluminium alloy pipe elementary composition by following parts by weight:
Silicon (Si) 0.20～0.23;
Magnesium (Mg) 0.45～0.50;
Iron (Fe) 0.01～0.15;
Impurity element (S.P) 0.00～0.01;
Aluminium (Al) 99.34～99.11.
2, high-purity, high precision light sensitive drum base according to claim 1 is characterized in that with aluminium alloy pipe and manufacture method the manufacture method of aluminium alloy pipe in turn includes the following steps:
A, fusion-casting process: the moiety weighing with subsidiary material such as primary aluminum, aluminium-silicon master alloy, magnesium ingot are pressed product, in primary aluminum, comprise aluminium ingot and aluminium waste, aluminium ingot and proportioning of waste should be controlled at 11: 1; The smelting furnace of then primary aluminum, aluminium-silicon master alloy being packed in sequence, temperature of fusion is controlled at 730～760 ℃; Treat after alloy fully melts magnesium ingot to be made these raw material fusings with pressing the magnesium cover to be pressed into molten aluminium, carry out the refining first time in smelting furnace, add refining agent, degasification gas is argon gas, skims after refining is intact, carries out three refinings altogether; Leave standstill melt, time of repose 10～15Min after refining is intact; 720 ℃ of control melt temperature outs, melt goes out that holding furnace is laggard goes into runner, be enabled in the line thinning system, the Al-5Ti-B silk is added in the chute with the speed of 1.2～1.4kg/t flow, start online gas-freeing system, feed high-purity argon gas, gas is sheared be broken into micro bubble that ( 1～4mm) by high speed rotating, melt flows into ceramic filter plate and carries out melt filtration, carries out online secondary filtration through special porous pipe filter again; Final melt flows into the hot direct casting of level such as shunting disk begins to carry out and causes the aluminium ingot casting;
B, homogenizing, water-cooled are handled, sawing: the ingot casting that casting is come out carries out the homogenizing processing, ingot homogenization annealing temperature: 550～570 ℃, the ingot homogenization annealing time: 4～8 hours, it was cold after homogenizing handled the ingot casting of coming out of the stove to be carried out mist, and cooled ingot casting prescinds;
C, ingot casting heating: Heating temperature: 420～460 ℃, heat-up time: 2～3 hours;
D, ingot casting hot soarfing skin: ingot casting after heating with surperficial peeling 2.5～3.0mm;
E, the extruding of hot isothermal, press quenching: extrusion temperature: 410～450 ℃, extrusion speed: 15～20m/min, extrusion ratio: 85～100, the quenching mode: air-cooled, quenching temperature: 525～535 ℃;
F, finishing: through stretching rectification, sawing obtains pushing material;
G, drawing, follow-up finishing: obtain aluminium alloy pipe through roller leveler aligning, washing oil and sawing.
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