CN104275358A - Extrusion molding method for aluminum alloy inner diameter-changeable seamless tube - Google Patents
Extrusion molding method for aluminum alloy inner diameter-changeable seamless tube Download PDFInfo
- Publication number
- CN104275358A CN104275358A CN201410484289.9A CN201410484289A CN104275358A CN 104275358 A CN104275358 A CN 104275358A CN 201410484289 A CN201410484289 A CN 201410484289A CN 104275358 A CN104275358 A CN 104275358A
- Authority
- CN
- China
- Prior art keywords
- reducing
- pecker
- extruding
- diameter
- recipient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Extrusion Of Metal (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses an extrusion molding method for an aluminum alloy inner diameter-changeable seamless tube. A hollow casting ingot obtained by smelting, casting and homogenizing a conventional 7075 alloy or 2A12 alloy is heated and then is extruded in a 4500-tonage forward and backward double-acting extruding machine; 2-in and 1-out relative movement of a perforation needle in an extrusion die is finished through accurate procedure control of the extruding machine and then the inner diameter-changeable seamless tube needed by a petroleum drilling rod is produced by extrusion. After the diameter-changeable tube is quenched, stretched, manually aged or naturally aged, the dimensional tolerance completely meets the requirements; and inner and outer surfaces of the diameter-changeable tube, macrostructures and microstructures, chemical components and dynamic performances meet the standard requirements of GB/T4437.1-2000.
Description
Technical field
The metal working technical area that the present invention relates to, particularly relates to the extrusion process of reducing seamless pipe in a kind of aluminium alloy.
Background technology
The drilling rod that oil drilling uses is all now steel pipe, due to than the shortcoming such as great, flexibility is poor, decay resistance is low, has a lot of weak point for the deep-well drilling nearly myriametre.Existing aluminium alloy seamless reducer pipe is all adopt the mode such as punching press, welding to manufacture, and owing to limiting by the aspect such as equipment, frock, the aluminium alloy seamless reducer pipe length of producing is short, cannot meet the needs of length >=10 meter petroleum drilling feeler lever.
Summary of the invention
Object of the present invention is exactly the deficiency existed for prior art, provides the extrusion process of reducing seamless pipe in a kind of aluminium alloy.
Above-mentioned purpose is realized by following proposal:
In aluminium alloy, an extrusion process for reducing seamless pipe, is characterized in that, said method comprising the steps of:
(1) hollow cast ingot and extrusion die are sent into recipient in the recipient front end of forward and reverse two dynamic two-way extruder, recipient moves forward, and makes the top extrusion die of mold shaft, and hollow dummy block sends into recipient from recipient rear end; Adopt reducing pecker, this reducing pecker comprises two sections that diameter do not wait, and be angled transition section between these two sections, the part that wherein diameter is less is positioned at pecker foremost;
(2) advance of reducing pecker makes the less part of this reducing pecker diameter coordinate with described extrusion die, hollow extrusion axis enters recipient, and keeps constant speed to carry out the extruding of predetermined length with recipient complete ingot casting jumping-up in recipient after;
(3) described reducing pecker advance makes the larger part of this reducing pecker diameter coordinate with described extrusion die, has continued the extruding of predetermined length;
(4) described reducing pecker retreats and the less part of this reducing pecker diameter is coordinated with described extrusion die, again completes the extruding of predetermined length;
(5) finished product is obtained through quenching solution, shrend, tension straingtening, sawing.
According to above-mentioned extrusion process, it is characterized in that, be 20mm in the length described in described step (2) between reducing pecker and described extrusion die cooperation place, and it is Φ 147mm that external diameter is produced in extruding, internal diameter is Φ 107mm, and wall thickness is the part of 20mm.
According to above-mentioned extrusion process, it is characterized in that, be 13mm in the length described in described step (3) between reducing pecker and described extrusion die cooperation place, and it is Φ 147mm that external diameter is produced in extruding, internal diameter is Φ 121mm, and wall thickness is the part of 13mm.
According to above-mentioned extrusion process, it is characterized in that, be 20mm in the length described in described step (4) between reducing pecker and described extrusion die cooperation place, and it is Φ 147mm that external diameter is produced in extruding, internal diameter is Φ 107mm, and wall thickness is the part of 20mm.
According to above-mentioned extrusion process, it is characterized in that, in described step (5), in extruding being produced, reducing seamless pipe extruding head end is upper, extruding tail end carries out quenching solution process at lower loading 26 meters of upright quenching furnaces, heating-up temperature is 463 DEG C, is incubated and in 10 ~ 35 DEG C of water temperatures, carries out shrend after 75 minutes; Carry out tension straingtening at 600 tons of internal reducing seamless pipes of tension straightener, extensibility is 0.6-0.8%; Scale sawing is carried out by predetermined length and size.
Beneficial effect of the present invention: reducer pipe prepared by method of the present invention is after quenching, stretching, artificial aging or natrual ageing, dimensional tolerance meets the requirements completely, the inside and outside surface of reducer pipe, low power, mirco structure, chemical composition and mechanical property all can meet the standard-required of GB/T4437.1-2000.
Accompanying drawing explanation
Fig. 1 is the structural representation of the seamless pipe using method of the present invention to prepare;
Fig. 2 is the structural representation of the extrusion die that method of the present invention uses;
Fig. 3 is the structural representation of the pecker that method of the present invention uses;
Fig. 4-Fig. 6 is extrusion process schematic diagram of the present invention;
Fig. 7 is the structural representation of the seamless pipe using pressing method of the present invention shaping.
Detailed description of the invention
The present invention is by extrusion die, reducing pecker on positive and negative double-acting extruding machine, and by the accurate programme-control of extruder in extrusion process, completing pecker in extrusion die 2 enters the 1 relative motion extruding of moving back and produce reducing seamless tubular goods as shown in Figure 1.
The structure of the extrusion die that the present invention is used and pecker is as Fig. 2 and Fig. 3.Extrusion die can adopt the extrusion die of traditional piping material.See Fig. 3, the present invention adopt pecker be reducing pecker, this reducing pecker comprise diameter not wait two sections, be angled transition section between these two sections, the part that wherein diameter is less is positioned at pecker foremost.
In one embodiment of the invention, in target the size of reducing seamless pipe and tolerance see Fig. 7 and table 1.Table 1: the size of reducing seamless pipe and tolerance in oil drilling
The present embodiment adopts 7075 alloy production hollow round ingot casting, and ingot casting specification is Φ 380 × Φ 140 × 1000mm, and the chemical composition of ingot casting is as shown in table 2:
The chemical composition of table 2:7075 alloy
Ingot casting carries out Homogenization Treatments, temperature: 460 ± 5 DEG C; Temperature retention time: 12 hours; Come out of the stove with stove Air flow to 260 DEG C.Hollow cast ingot heats in induction furnace, and ingot casting heating-up temperature is 420 DEG C.Produce at the Φ 390mm recipient of 4500 tons of forward and reverse two dynamic two-way extruders, recipient temperature is 450 DEG C.
Extrusion process is see Fig. 4-Fig. 6, and ingot casting and extrusion die are sent into recipient in recipient front end by manipulator, and recipient moves forward, and makes the top extrusion die of mold shaft.Hollow dummy block is sent into recipient from recipient rear end by manipulator.Squeezing needle advance in-position 1(as shown in Figure 4, the part that the point diameter of reducing pecker is less coordinates with extrusion die), hollow extrusion axis enters recipient, and complete ingot casting jumping-up in recipient after, keeping constant speed to carry out extruding production with recipient, hollow extrusion axis and recipient are without relative motion.
Pecker proceeds to position 1, and it is Φ 147mm that external diameter is produced in extruding, and internal diameter is Φ 107mm, and wall thickness is the extruding of the seamless tubular goods of 20mm, L1 section.
Complete after the extruding of L1 section produces, the part that pecker proceeds to the diameter of position 2(reducing pecker larger coordinates with extrusion die), it is Φ 147mm that external diameter is produced in extruding, and internal diameter is Φ 121mm, and wall thickness is the seamless tubular goods of 13mm, L2 section.
After completing the extruding production of L2 section, pecker, back to position 3, makes the less part of the point diameter of reducing pecker coordinate with extrusion die again, and it is Φ 147mm that external diameter is produced in extruding, and internal diameter is Φ 107mm, and wall thickness is the production of 20mm, L3 section seamless tubular goods.
In extruding being produced, reducing seamless pipe extruding head end is upper, and extruding tail end carries out quenching solution process at lower loading 26 meters of upright quenching furnaces, and heating-up temperature is 463 DEG C, is incubated and in 10 ~ 35 DEG C of water temperatures, carries out shrend after 75 minutes.
Carry out tension straingtening at 600 tons of internal reducing seamless pipes of tension straightener, extensibility is 0.6-0.8%.
Length on request and size carry out scale sawing, and get high power sample at extruding head end, tail end gets low power and mechanical performance sample.
Internal reducing seamless pipe carries out complete detection by the size of Fig. 7 and table 1, all meets drawing and tolerance.Testing result is as shown in table 3.
The size detection result of table 3:7075 alloy inner-diameter changeable pipe material
7075 alloy inner-diameter changeable pipe mechanics properties testing results are as shown in table 4:
Table 4:7075 alloy reducer pipe mechanics properties testing result
The inside and outside surface of reducer pipe exists without peeling, pit, crackle, layering, bubble, nonmetal inclusion and pit.
High and low times of tissue: mirco structure is even, the grain boundary eutectic not having solution heat treatment to cause melts; Low power flawless, pit, layering, shrinkage cavity, surperficial crack-free and loose.
In another embodiment, prepare the seamless pipe of identical size, use high strength alumin ium alloy 2A12, adopt identical-level hot-top casting hollow cast ingot, ingot homogenization aft-loaded airfoil becomes the hollow ingot of Φ 380 × Φ 140 × 1000mm.At 4500 tons of positive and negative double-acting extruding machine Φ 390mm recipients, adopt extrusion die and the pecker of structure shown in Fig. 2, Fig. 3.Ingot casting is loaded and after jumping-up, is kept hollow extrusion axis constant speed extrude, to be advanced 2 positions, retreats 1 position by pecker, extrudes the interior reducing seamless pipe of production.Routinely process system through quenching, stretch, after sawing finished product, detect by the figure paper size of Fig. 7 and table 1 and tolerance.Meet drawing and tolerance completely, testing result is as shown in table 6.
The size detection result of table 5:2A12 alloy diameter changeable pipe material
Claims (5)
1. the extrusion process of reducing seamless pipe in aluminium alloy, is characterized in that, said method comprising the steps of:
(1) hollow cast ingot and extrusion die are sent into recipient in the recipient front end of forward and reverse two dynamic two-way extruder, recipient moves forward, and makes the top extrusion die of mold shaft, and hollow dummy block sends into recipient from recipient rear end; Adopt reducing pecker, this reducing pecker comprises two sections that diameter do not wait, and be angled transition section between these two sections, the part that wherein diameter is less is positioned at pecker foremost;
(2) advance of reducing pecker makes the less part of this reducing pecker diameter coordinate with described extrusion die, hollow extrusion axis enters recipient, and keeps constant speed to carry out the extruding of predetermined length with recipient complete ingot casting jumping-up in recipient after;
(3) described reducing pecker advance makes the larger part of this reducing pecker diameter coordinate with described extrusion die, has continued the extruding of predetermined length;
(4) described reducing pecker retreats and the less part of this reducing pecker diameter is coordinated with described extrusion die, again completes the extruding of predetermined length;
(5) finished product is obtained through quenching solution, shrend, tension straingtening, sawing.
2. extrusion process according to claim 1, it is characterized in that, be 20mm in the distance described in described step (2) between reducing pecker and described extrusion die cooperation place, and it is Φ 147mm that external diameter is produced in extruding, internal diameter is Φ 107mm, and wall thickness is the part of 20mm.
3. extrusion process according to claim 2, it is characterized in that, at the distance 13mm described in described step (3) between reducing pecker and described extrusion die cooperation place, it is Φ 147mm that external diameter is produced in extruding, internal diameter is Φ 121mm, and wall thickness is the part of 13mm.
4. extrusion process according to claim 3, it is characterized in that, be 20mm in the distance described in described step (4) between reducing pecker and described extrusion die cooperation place, and it is Φ 147mm that external diameter is produced in extruding, internal diameter is Φ 107mm, and wall thickness is the part of 20mm.
5. extrusion process according to claim 4, it is characterized in that, in described step (5), in extruding being produced, reducing seamless pipe extruding head end is upper, extruding tail end carries out quenching solution process at lower loading 26 meters of upright quenching furnaces, heating-up temperature is 463 DEG C, is incubated and in 10 ~ 35 DEG C of water temperatures, carries out shrend after 75 minutes; Carry out tension straingtening at 600 tons of internal reducing seamless pipes of powerful stretching-machine, extensibility is 0.6-0.8%; Scale sawing is carried out by predetermined length and size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410484289.9A CN104275358A (en) | 2014-09-22 | 2014-09-22 | Extrusion molding method for aluminum alloy inner diameter-changeable seamless tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410484289.9A CN104275358A (en) | 2014-09-22 | 2014-09-22 | Extrusion molding method for aluminum alloy inner diameter-changeable seamless tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104275358A true CN104275358A (en) | 2015-01-14 |
Family
ID=52250977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410484289.9A Pending CN104275358A (en) | 2014-09-22 | 2014-09-22 | Extrusion molding method for aluminum alloy inner diameter-changeable seamless tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104275358A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170692A (en) * | 2015-09-30 | 2015-12-23 | 核兴航材（天津）科技有限公司 | Stress control production process of high-strength aluminum alloy pipe |
| CN105537308A (en) * | 2016-01-26 | 2016-05-04 | 中国重型机械研究院股份公司 | External variable-diameter aluminum alloy seamless pipe extrusion production method |
| CN106222503A (en) * | 2016-09-12 | 2016-12-14 | 东莞市铝美铝型材有限公司 | A kind of extrusion process of variable cross-section aluminium alloy probing bar |
| CN108188197A (en) * | 2017-12-29 | 2018-06-22 | 西南铝业（集团）有限责任公司 | Thin-wall pipes production technology |
| CN109352282A (en) * | 2018-11-28 | 2019-02-19 | 青海国鑫铝业股份有限公司 | A kind of production method of big-size thinning plastic seamless pipe |
| CN109772915A (en) * | 2019-02-25 | 2019-05-21 | 龙泉市日盛汽车部件有限公司 | A kind of air conditioning for automobiles subcooler shell and its manufacture craft for saving material |
| CN112474873A (en) * | 2020-12-02 | 2021-03-12 | 江阴市丰厚管件有限公司 | Manufacturing method of seamless reducer pipe |
| CN113953773A (en) * | 2021-11-16 | 2022-01-21 | 贵州航天精工制造有限公司 | Method for processing and controlling bolt with polished rod diameter tolerance zone of 9 mu m |
| CN114309110A (en) * | 2021-12-30 | 2022-04-12 | 山东兖矿轻合金有限公司 | Reverse extrusion forming method of 2XXX hard aluminum alloy seamless special-shaped cavity profile |
| CN114505394A (en) * | 2022-03-08 | 2022-05-17 | 深圳市吉百顺科技有限公司 | Production and processing technology of high-precision inner wall reducer pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181441A (en) * | 1982-04-19 | 1983-10-24 | Mitsuboshi Seisakusho:Kk | Manufacture of steering head pipe |
| EP0106751A1 (en) * | 1982-10-08 | 1984-04-25 | Yves Pencé | Method of making cylindrical work pieces of progressively increasing diameters, and device for carrying out the method |
| CN102319757A (en) * | 2011-08-18 | 2012-01-18 | 中国兵器工业第五二研究所 | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation |
| CN202555618U (en) * | 2012-02-28 | 2012-11-28 | 上海海隆石油管材研究所 | Extrusion die for making variable cross-section aluminium alloy pipe in internal upset form |
| CN103286151A (en) * | 2012-02-28 | 2013-09-11 | 上海海隆石油管材研究所 | Preparation device and method for manufacturing inside and/or outside thickened aluminum alloy pipes with variable cross sections |
| CN103752630A (en) * | 2013-12-27 | 2014-04-30 | 广州有色金属研究院 | Preparation method of variable cross-section aluminum alloy drill rod pipe body |
-
2014
- 2014-09-22 CN CN201410484289.9A patent/CN104275358A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181441A (en) * | 1982-04-19 | 1983-10-24 | Mitsuboshi Seisakusho:Kk | Manufacture of steering head pipe |
| EP0106751A1 (en) * | 1982-10-08 | 1984-04-25 | Yves Pencé | Method of making cylindrical work pieces of progressively increasing diameters, and device for carrying out the method |
| CN102319757A (en) * | 2011-08-18 | 2012-01-18 | 中国兵器工业第五二研究所 | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation |
| CN202555618U (en) * | 2012-02-28 | 2012-11-28 | 上海海隆石油管材研究所 | Extrusion die for making variable cross-section aluminium alloy pipe in internal upset form |
| CN103286151A (en) * | 2012-02-28 | 2013-09-11 | 上海海隆石油管材研究所 | Preparation device and method for manufacturing inside and/or outside thickened aluminum alloy pipes with variable cross sections |
| CN103752630A (en) * | 2013-12-27 | 2014-04-30 | 广州有色金属研究院 | Preparation method of variable cross-section aluminum alloy drill rod pipe body |
Non-Patent Citations (2)
| Title |
|---|
| 刘劲松: "《工程材料与热加工实践》", 30 April 2011, 清华大学出版社 * |
| 吴锡坤: "《铝型材加工实用技术手册》", 30 June 2006, 中南大学出版社 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170692A (en) * | 2015-09-30 | 2015-12-23 | 核兴航材（天津）科技有限公司 | Stress control production process of high-strength aluminum alloy pipe |
| CN105537308A (en) * | 2016-01-26 | 2016-05-04 | 中国重型机械研究院股份公司 | External variable-diameter aluminum alloy seamless pipe extrusion production method |
| CN106222503A (en) * | 2016-09-12 | 2016-12-14 | 东莞市铝美铝型材有限公司 | A kind of extrusion process of variable cross-section aluminium alloy probing bar |
| CN108188197A (en) * | 2017-12-29 | 2018-06-22 | 西南铝业（集团）有限责任公司 | Thin-wall pipes production technology |
| CN109352282B (en) * | 2018-11-28 | 2021-06-11 | 青海国鑫铝业股份有限公司 | Production method of large-size thin-wall seamless pipe |
| CN109352282A (en) * | 2018-11-28 | 2019-02-19 | 青海国鑫铝业股份有限公司 | A kind of production method of big-size thinning plastic seamless pipe |
| CN109772915A (en) * | 2019-02-25 | 2019-05-21 | 龙泉市日盛汽车部件有限公司 | A kind of air conditioning for automobiles subcooler shell and its manufacture craft for saving material |
| CN112474873A (en) * | 2020-12-02 | 2021-03-12 | 江阴市丰厚管件有限公司 | Manufacturing method of seamless reducer pipe |
| CN112474873B (en) * | 2020-12-02 | 2022-03-01 | 江阴市丰厚管件有限公司 | Manufacturing method of seamless reducer pipe |
| CN113953773A (en) * | 2021-11-16 | 2022-01-21 | 贵州航天精工制造有限公司 | Method for processing and controlling bolt with polished rod diameter tolerance zone of 9 mu m |
| CN113953773B (en) * | 2021-11-16 | 2024-03-01 | 贵州航天精工制造有限公司 | Bolt machining control method with diameter tolerance zone of polished rod of 9 mu m |
| CN114309110A (en) * | 2021-12-30 | 2022-04-12 | 山东兖矿轻合金有限公司 | Reverse extrusion forming method of 2XXX hard aluminum alloy seamless special-shaped cavity profile |
| CN114309110B (en) * | 2021-12-30 | 2024-05-07 | 山东兖矿轻合金有限公司 | Backward extrusion molding method of 2XXX hard aluminum alloy seamless special-shaped cavity section bar |
| CN114505394A (en) * | 2022-03-08 | 2022-05-17 | 深圳市吉百顺科技有限公司 | Production and processing technology of high-precision inner wall reducer pipe |
| CN114505394B (en) * | 2022-03-08 | 2023-12-22 | 深圳市吉百顺科技有限公司 | Production and processing technology of high-precision inner wall reducing pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104275358A (en) | Extrusion molding method for aluminum alloy inner diameter-changeable seamless tube | |
| CN105880310B (en) | A kind of mould and forming method of the hollow magnesium alloy profiles of Ultra-fine Grained | |
| CN104307908B (en) | A kind of method waiting channel formation mould and shaping pipe thereof of thick-wall tube | |
| CN103921065A (en) | Manufacturing method of vehicle seamless steel tubes | |
| CN104148430B (en) | A kind of amorphous alloy pipe extrusion molding apparatus and technique | |
| CN203803957U (en) | Special-shaped aluminium alloy seamless square tube extrusion die | |
| CN106140852B (en) | A kind of high-strength tenacity fine grain light-alloy tubing prepares mould and preparation method thereof | |
| CN105149372A (en) | Manufacturing process of asymmetric seamless hollow profile | |
| CN102886391B (en) | Method for preparing small-aperture magnesium alloy pipe fitting | |
| CN103639215B (en) | A kind of preparation method of high-strength nanocrystalline copper pipe | |
| CN104190736B (en) | A kind of by extruding realize device and the technique that amorphous metal continues cladding wires | |
| CN104493167A (en) | Method for forming powder high-temperature alloy annular member | |
| CN103894435A (en) | Reciprocated extruding device for preparing superfine grain magnesium alloy and processing method thereof | |
| Chen et al. | Effects of ram velocity on pyramid die extrusion of hollow aluminum profile | |
| CN103639220A (en) | Extrusion forming method of nickel alloy tube blank | |
| CN105063528A (en) | Molding method for beta titanium alloy tube with small diameter, thin wall and high strength | |
| CN103286153A (en) | Manufacture method of ultra-large-diameter pipeline extruded nozzles | |
| CN104368621A (en) | Manufacturing method of metal plate | |
| CN104625594B (en) | The method of manufacturing technology of rotor of large turbo-type generator profiled-cross-section connector copper pipe | |
| CN204108007U (en) | A kind of by extruding realize the device that amorphous metal continues cladding wires | |
| CN205816441U (en) | The extrusion die of forward extrusion associating Equal-channel Angular Pressing | |
| CN110576070A (en) | Bidirectional extrusion forming die for magnesium alloy thin-wall pipe and forming method thereof | |
| CN203725516U (en) | Warm and cold extrusion-forging tube-drawing equipment | |
| CN104646945B (en) | Special high-strength aluminum alloy part forming method | |
| CN104741402B (en) | 5 A06 aluminum alloy small size hollow profile processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |