CN1749428A - Method for processing specific shape-changing magnesium and magnesium alloy plate strip - Google Patents
Method for processing specific shape-changing magnesium and magnesium alloy plate strip Download PDFInfo
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- CN1749428A CN1749428A CN 200510017985 CN200510017985A CN1749428A CN 1749428 A CN1749428 A CN 1749428A CN 200510017985 CN200510017985 CN 200510017985 CN 200510017985 A CN200510017985 A CN 200510017985A CN 1749428 A CN1749428 A CN 1749428A
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Abstract
The production process of special deformed magnesium and magnesium alloy plate or belt includes the technological steps of: compounding material and smelting, semi-continuous casting, sawing and cutting, milling, fault detection, homogeneous heat treatment, heating to 440-510 deg.c and maintaining for over 1 hr, hot rolling to the thickness of 1.149-1.429 times the finished product, on-line cooling to 180-280 deg.c, hot rolling for the second time to the required thickness, low temperature heat treatment through annealing at 150-190 deg.c in annealing furnace for over 1 hr, naturally cooling and product inspection. The present invention has short production process, low power consumption and low cost.
Description
Technical field:
The present invention relates to technical field of nonferrous metal processing, the working method of a kind of idio-morphosis magnesium and magnesium alloy plate and belt.
Background technology:
At present, in the deformed Mg and the magnesium alloy plate and belt course of processing, employing be that hot rolling technology is: batching and melting-semicontinuous casting (ingot blank)-sawing-mill face-flaw detection-homogenizing thermal treatment-heating-hot rolling-annealing-finishing-surface treatment-goods are packed technologies such as warehouse-in; Adopt this hot rolling technology, the product limitation is big, and state only can reach H112, tensile strength 235-258MPa, yield strength 160-189MPa; Along with the continuous development of aeronautical and space technology, higher tensile strength and the yield strength of material requirements for aerospace are used do not reach the requirement of H24 state.
For reaching the idio-morphosis magnesium alloy plate and belt of producing the H24 state, what some manufacturer adopted is that warm-rolling or cold-rolling process are: batching and melting-semicontinuous casting (ingot blank)-sawing-mill face-flaw detection-homogenizing thermal treatment-heating-hot rolling-warm-rolling/cold rolling-annealing-finishing-surface treatment-technologies such as goods packing warehouse-in, but this also can only produce the thin plate band.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the invention provides the working method of a kind of idio-morphosis magnesium and magnesium alloy plate of moderate thickness band, can significantly improve the mechanical property of magnesium alloy, solve the difficult problem that magnesium alloy plate can not be produced H24 state plate of moderate thickness, increase the kind of wrought magnesium alloys product.
For achieving the above object, the present invention adopts following technical scheme:
The working method of described idio-morphosis magnesium and magnesium alloy plate and belt,---semicontinuous casting (ingot blank)---sawing------flaw detection---homogenizing thermal treatment---heating------online cooling---hot rolling once more---low-temperature heat treatment---inspection after construction that is hot-rolled down to certain thickness of milling face that adopting process is: batching and melting; In its operation:
Its heating process: magnesium and the qualified ingot casting of magnesium alloy are heated to 440～510 ℃, and insulation is more than 1 hour;
Its hot-rolled process:, be hot-rolled down to 1.149～1.429 of finished product thickness multiple according to the finished product thickness requirement;
Its online cooling process: online cooling is reduced to 180～280 ℃;
It is hot-rolled process once more: be rolled to finished product thickness, adopt and reserve the total pass reduction of remaining finish to gauge 13～30%;
Its low-temperature heat treatment; Adopt annealing furnace to anneal, annealing temperature is controlled between 150～190 ℃, carries out low-temperature heat treatment, and is incubated more than 1 hour, comes out of the stove then to carry out naturally cooling and get final product;
Owing to adopted technical scheme as mentioned above, the present invention has following positively effect:
The present invention is by relying on control metal finishing temperature, the total pass reduction of finish to gauge, carry out the method for work hardening, obtain the H24 state of this product, promptly utilize Plastic Deformation and according to the processing characteristics of metal, different thickness requirement at goods, design the total pass reduction of different finishing temperatures and finish to gauge, control the final performance of goods, and adopt low-temperature heat treatment to eliminate the unrelieved stress that exists in the metal.
Adopt deformation magnesium alloy plate band technological method for processing of the present invention, can enlarge the existing technology product mechanical property scope that is beyond one's reach, solve the defective that existing processing method exists, flow process is short, characteristic of low energy consumption thereby have, and significantly improve the mechanical property of magnesium alloy, solved the difficult problem that the magnesium alloy plate of moderate thickness can't be produced H24 state product, for the field has been widened in magnesium alloy board production.
The wrought magnesium alloys plate of moderate thickness band that adopts the inventive method to produce, tensile strength can reach 255-282MPa; Yield strength can reach 187-234MPa; Can be widely used in aerospace field.
The drawing explanation:
Fig. 1 is the processing process figure of idio-morphosis magnesium and magnesium alloy plate and belt:
Embodiment one:
To produce wrought magnesium alloys AZ31, specification is: the sheet material of 9.525 * 1000 * 2500mm is example:
Technology is prepared burden and melting routinely---semicontinuous casting (ingot blank)---sawing---mill face---flaw detection---operations such as homogenizing thermal treatment are processed into ingot blank.
Heating: magnesium and the qualified ingot casting of magnesium alloy are put into process furnace, ingot casting is heated to 470 ℃, be incubated 2 hours.
Hot rolling: the ingot casting after will heating is hot-rolled down to 13mm.
Online cooling: hot rolling blank is cooled to 230 ℃.
Hot rolling once more: continue heat and be rolling to 9.525mm.
Subzero treatment: the annealing furnace of packing into of the sheet material after will rolling carries out subzero treatment, and 180 ℃ of Heating temperatures are incubated 1.5 hours.
Inspection after construction: warehousing after passing.
Embodiment two:
The sheet material that is of a size of 12 * 1000 * 2000mm with production wrought magnesium alloys AZ41M is example:
Technology is prepared burden and melting routinely---semicontinuous casting (ingot blank)---sawing---mill face---flaw detection---operations such as homogenizing thermal treatment are processed into ingot blank.
Heating: magnesium and the qualified ingot casting of magnesium alloy are put into process furnace, ingot casting is heated to 480 ℃, be incubated 3 hours.
Hot rolling: the ingot casting after will heating is hot-rolled down to 15mm.
Online cooling: hot rolling blank is cooled to 250 ℃.
Hot rolling once more: continue heat and be rolling to 12mm.
Subzero treatment: the annealing furnace of packing into of the sheet material after will rolling carries out subzero treatment, and 160 ℃ of Heating temperatures are incubated 2 hours.Inspection after construction: warehousing after passing.
Claims (1)
1, the working method of a kind of idio-morphosis magnesium and magnesium alloy plate and belt, it is characterized in that: described working method,---semicontinuous casting (ingot blank)---sawing------flaw detection---homogenizing thermal treatment---heating------online cooling---hot rolling once more---low-temperature heat treatment---inspection after construction that is hot-rolled down to certain thickness of milling face that the technology of employing is: batching and melting; In its operation:
Its heating process: magnesium and the qualified ingot casting of magnesium alloy are heated to 440～510 ℃, and insulation is more than 1 hour;
Its hot-rolled process:, be hot-rolled down to 1.149～1.429 of finished product thickness multiple according to the finished product thickness requirement;
Its online cooling process: online cooling is reduced to 180～280 ℃;
It is hot-rolled process once more: be rolled to finished product thickness, adopt and reserve the total pass reduction of remaining finish to gauge 13～30%;
Its low-temperature heat treatment operation; Adopt annealing furnace to anneal, annealing temperature is controlled at carries out low-temperature heat treatment between 150～190 ℃, and is incubated more than 1 hour, comes out of the stove then to carry out naturally cooling and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017985 CN1318633C (en) | 2005-09-09 | 2005-09-09 | Method for processing specific shape-changing magnesium and magnesium alloy plate strip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017985 CN1318633C (en) | 2005-09-09 | 2005-09-09 | Method for processing specific shape-changing magnesium and magnesium alloy plate strip |
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| Publication Number | Publication Date |
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| CN1749428A true CN1749428A (en) | 2006-03-22 |
| CN1318633C CN1318633C (en) | 2007-05-30 |
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| CN 200510017985 Expired - Fee Related CN1318633C (en) | 2005-09-09 | 2005-09-09 | Method for processing specific shape-changing magnesium and magnesium alloy plate strip |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400699C (en) * | 2006-07-10 | 2008-07-09 | 东北大学 | Method for preparing 300MPa grade and isotropous AZ31 magnesium alloy sheet |
| CN101474745B (en) * | 2009-01-20 | 2010-06-02 | 清华大学 | Method for preparing AZ31B magnesium alloy pressing sheet material |
| CN102189120A (en) * | 2010-03-12 | 2011-09-21 | 上海西重所重型机械成套有限公司 | Supplementary heating method for low plastic metal plate band |
| CN101648210B (en) * | 2009-08-28 | 2011-10-26 | 中铝洛阳铜业有限公司 | Processing method for rolling magnesium alloy plate with low temperature, high speed and large processing amount |
| CN102240676A (en) * | 2011-05-11 | 2011-11-16 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN101422784B (en) * | 2007-11-01 | 2012-03-14 | 山西银光华盛镁业股份有限公司 | Rolling technique of ultra-fine grained magnesium alloy sheet |
| CN101623944B (en) * | 2009-08-10 | 2013-08-21 | 北京华盛荣镁业科技有限公司 | Magnesium alloy sandwich plate and preparation method thereof |
| CN107974596A (en) * | 2017-11-29 | 2018-05-01 | 宁波市鄞州隆茂冲压件厂 | A kind of high-performance hinge |
-
2005
- 2005-09-09 CN CN 200510017985 patent/CN1318633C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400699C (en) * | 2006-07-10 | 2008-07-09 | 东北大学 | Method for preparing 300MPa grade and isotropous AZ31 magnesium alloy sheet |
| CN101422784B (en) * | 2007-11-01 | 2012-03-14 | 山西银光华盛镁业股份有限公司 | Rolling technique of ultra-fine grained magnesium alloy sheet |
| CN101474745B (en) * | 2009-01-20 | 2010-06-02 | 清华大学 | Method for preparing AZ31B magnesium alloy pressing sheet material |
| CN101623944B (en) * | 2009-08-10 | 2013-08-21 | 北京华盛荣镁业科技有限公司 | Magnesium alloy sandwich plate and preparation method thereof |
| CN101648210B (en) * | 2009-08-28 | 2011-10-26 | 中铝洛阳铜业有限公司 | Processing method for rolling magnesium alloy plate with low temperature, high speed and large processing amount |
| CN102189120A (en) * | 2010-03-12 | 2011-09-21 | 上海西重所重型机械成套有限公司 | Supplementary heating method for low plastic metal plate band |
| CN102240676A (en) * | 2011-05-11 | 2011-11-16 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN102240676B (en) * | 2011-05-11 | 2013-07-03 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN107974596A (en) * | 2017-11-29 | 2018-05-01 | 宁波市鄞州隆茂冲压件厂 | A kind of high-performance hinge |
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| Publication number | Publication date |
|---|---|
| CN1318633C (en) | 2007-05-30 |
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Effective date of registration: 20060317 Address after: No. 1, Xiyuan Road, Jianxi District, Luoyang, Henan Applicant after: Zhonglu Luoyang Copper Industry Co., Ltd. Address before: Luoyang Luoyang Jianshe Road 50 Henan copper processing group company technology center Applicant before: Luoyang Copper Processing Group Co., Ltd. |
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