CN102626845B - Molybdenum lanthanum alloy tray processing method - Google Patents
Molybdenum lanthanum alloy tray processing method Download PDFInfo
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- CN102626845B CN102626845B CN201210083566.6A CN201210083566A CN102626845B CN 102626845 B CN102626845 B CN 102626845B CN 201210083566 A CN201210083566 A CN 201210083566A CN 102626845 B CN102626845 B CN 102626845B
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Abstract
The invention discloses a molybdenum lanthanum alloy tray processing method. The molybdenum lanthanum alloy tray processing method sequentially comprises the following steps of concocting alloy powder, performing isostatic pressing, performing hot rolling and blank opening, performing caustic washing, performing warm rolling, inspecting a plate, baiting, cleaning, leveling and annealing, milling a mark, drilling, welding and forming, riveting, performing vacuum welding and integral inspecting, and is characterized in that the alloy powder is molybdenum lanthanum alloy powder, containing 0.3-0.5% of lanthanum. The molybdenum lanthanum alloy powder is taken as raw material, so that the high temperature resistance and the high temperature strength of a tray blank are improved, the processing is more convenient, and the yield is higher.
Description
Technical field
the present invention relates to a kind of technological method for processing of molybdenum-lanthanum alloy pallet.
Background technology
along with the development of new and high technology, the fields such as mechano-electronic, oil, chemical industry, Aero-Space, boats and ships, atomic energy, become increasingly complex to the requirement of the kind, shape, thickness etc. of molybdenum auxiliary products molybdenum pallet, performance requirement is more and more harsher.And molybdenum materials poor in processability, resistance to elevated temperatures is poor, and under elevated temperature strength, intensity is low, and client has requirement for the machining accuracy of product and outward appearance, and this proposes very high requirement to drawing abillity.
Summary of the invention
the object of this invention is to provide a kind of life-span long, high temperature resistant, and the technological method for processing of the molybdenum-lanthanum alloy pallet that intensity is good under elevated temperature strength.
for solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of processing method of molybdenum-lanthanum alloy pallet, it comprises the allotment of alloy powder, isostatic pressing, hot rolling cogging, alkali cleaning, warm-rolling, sheet material inspection, blanking, cleaning, smoothing annealing, milling mark, punching, pincers worker shaping, riveted joint, vacuum welding, overall test successively, it is characterized in that: described alloy powder is molybdenum-lanthanum alloy powder, the addition of lanthanum is 0.3%-0.5%.
during compacting, pressing pressure is 175 ~ 185MPa.
if slab needs shaping after warm-rolling, then carry out successively after warm-rolling annealing, alkali cleaning, cold rolling, annealing, alkali cleaning, finished product be cold rolling, wherein cold rolling, annealing, alkali cleaning at least circulation primary.
during hot rolling, heating-up temperature is 1250 ~ 1400 DEG C, and the heat time is 30 ~ 50min, and going out the thickness that warm-rolling finished product gets the raw materials ready is 120% of the thickness of finished product, goes out thickness≤2.5mm that cold rolling rear finished product is got the raw materials ready.
described warm-rolling temperature is 900 ~ 950 DEG C, and temperature retention time is 15 ~ 25min.
described cold rolling temperature is 90 ~ 110 DEG C.
described annealing temperature is 700 ~ 950 DEG C, and temperature retention time is 30 ~ 50min.
the invention has the beneficial effects as follows: the present invention adopts molybdenum-lanthanum alloy powder as products material, improve the intensity under the heat-resisting quantity of pallet blank and high temperature, make processing more convenient, yield rate is higher.
Accompanying drawing explanation
accompanying drawing 1 is process chart of the present invention.
Detailed description of the invention
as shown in Figure 1, the process that this kind manufactures wide cut molybdenum sheet comprises the allotment of alloy powder, isostatic pressing, hot rolling cogging, alkali cleaning, warm-rolling, sheet material inspection, blanking, cleaning, smoothing annealing, milling mark successively, punch, bend shaping, riveted joint, vacuum welding, its concrete technology flow process of overall test are as follows:
one, molybdenum-lanthanum alloy powder allotment
the addition of lanthanum is about 0.3%-0.5%, and powder must mix, dress powder time to powder be made to shake reality as far as possible, make it be evenly distributed.
two, isostatic pressing
pressing pressure is 180MPa, when needing slow release after compacting, and controls oil nozzle direction well, prevents hydraulic oil from hurting sb.'s feelings.
three, hot rolling cogging
during hot rolling, heating-up temperature is 1250 ~ 1400 DEG C, and the heat time is 30 ~ 50min; Should be noted that during hot rolling following some: the rolling mill practice carrying out high temperature heavy reduction, before cogging, four fire require heating once, and rolling together; If the shaping of slab palpus, the first reduction in pass is less, and second and third passage should add aximal deformation value; Split rolling method size of getting the raw materials ready is determined, goes out warm-rolling finished product thickness of getting the raw materials ready and should be greater than 20% of finished product thickness; Going out cold rolling finished product thickness of getting the raw materials ready is≤2.5 ㎜.Tackle after cogging that blank carries out annealing, alkali cleaning.The alkali cleaning time is according to material surface situation.If blank no problem after alkali cleaning, directly carries out sheet material inspection; If the reconditioning at any time of alkali cleaning complete discovery rolling defect also enters the warm-rolling stage.
four, warm-rolling
should check before warm-rolling that whether roller surface is bright and clean, mustn't have the defects such as macroscopic crackle, impression, slag inclusion; Warm-rolling temperature is 900 ~ 950 DEG C, temperature retention time 15 ~ 25 DEG C; Warm-rolling process roll surface can be coated with a small amount of oil, to reduce draught pressure and protection roll surface.After warm-rolling, should carry out the stress relief annealing of sheet material, annealing concrete regulation is: annealing temperature is 700 ~ 950 DEG C, and 30 ~ 50 DEG C, annealing temperature is directly proportional to finished product thickness; Through row alkali cleaning after annealing, if still defectiveness, enter cold rolling stage.
five, cold rolling
time cold rolling, temperature is 100 DEG C, carries out the circulating process of cold rolling-annealing, alkali cleaning-cold rolling according to finished product situation.Cold rollingly completely rear blank to be annealed, alkali cleaning, annealing, alkali cleaning condition and hot rolling cogging after annealing, alkali cleaning are consistent.
six, finished product is cold rolling
finished product cold rolling temperature is 100 DEG C, the cold rolling after annealing of finished product, anneals to carry out in vacuum annealing furnace, and before annealing, reply product surface greasy dirt is clean clearly.
seven, product formation processing
by the blanking of drawing dimensional requirement Water Cutting, CNC processing (milling mark, punching), pincers worker is shaped, welding, riveted joint.Wherein CNC adopts import cutter.
eight, overall test
above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to the present invention's spirit change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. the technological method for processing of a molybdenum-lanthanum alloy pallet, it comprises the allotment of alloy powder, isostatic pressing, hot rolling cogging, alkali cleaning, warm-rolling, sheet material inspection, blanking, cleaning, smoothing annealing, milling mark, punching, pincers worker shaping, riveted joint, vacuum welding, overall test successively, it is characterized in that: described alloy powder is molybdenum-lanthanum alloy powder, the addition of lanthanum is 0.3%-0.5%, after warm-rolling, slab needs shaping, carry out successively after warm-rolling annealing, alkali cleaning, cold rolling, annealing, alkali cleaning, finished product be cold rolling, wherein cold rolling, annealing, alkali cleaning at least circulation primary; During hot rolling, heating-up temperature is 1250 ~ 1400 DEG C, and the heat time is 30 ~ 50min, needs the rolling mill practice carrying out high temperature heavy reduction, heating is required once four fiery times, rolling one, the shaping of slab palpus before cogging, first reduction in pass is less, and second and third passage should add aximal deformation value; Going out the thickness that warm-rolling finished product gets the raw materials ready is 120% of the thickness of finished product, and described warm-rolling temperature is 900 ~ 950 DEG C, and temperature retention time is 15 ~ 25min, and warm-rolling process roll surface can be coated with a small amount of oil, to reduce draught pressure and protection roll surface; Go out thickness≤2.5mm that cold rolling finished product is got the raw materials ready.
2. the technological method for processing of a kind of molybdenum-lanthanum alloy pallet according to claim 1, is characterized in that: during compacting, pressing pressure is 175 ~ 185MPa.
3. the technological method for processing of a kind of molybdenum-lanthanum alloy pallet according to claim 1, is characterized in that: described cold rolling temperature is 90 ~ 110 DEG C.
4. the technological method for processing of a kind of molybdenum-lanthanum alloy pallet according to claim 1, it is characterized in that: described annealing temperature is 700 ~ 950 DEG C, temperature retention time is 30 ~ 50min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210083566.6A CN102626845B (en) | 2012-03-27 | 2012-03-27 | Molybdenum lanthanum alloy tray processing method |
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| CN201210083566.6A CN102626845B (en) | 2012-03-27 | 2012-03-27 | Molybdenum lanthanum alloy tray processing method |
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| CN102626845A CN102626845A (en) | 2012-08-08 |
| CN102626845B true CN102626845B (en) | 2015-06-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104607464B (en) * | 2015-01-12 | 2016-08-10 | 郑州通达重型机械制造有限公司 | A kind of milling method of high temperature insulating screen wide cut ultra-thin molybdenum plate band |
| CN105773074B (en) * | 2016-03-14 | 2017-08-18 | 洛阳高新四丰电子材料有限公司 | A kind of preparation method of molybdenum alloy boat |
| CN109967971A (en) * | 2017-12-28 | 2019-07-05 | 宁波江丰电子材料股份有限公司 | Wafer tray processing method |
| CN108546894A (en) * | 2018-05-11 | 2018-09-18 | 成都联虹钼业有限公司 | A kind of preparation method with Properties of High Temperature Creep molybdenum plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1236089C (en) * | 2001-06-23 | 2006-01-11 | 西北稀有金属材料研究院 | SGS Ta material or Ta product and its preparing process |
| WO2004022801A1 (en) * | 2002-09-04 | 2004-03-18 | Osram Sylvania Inc. | Method of forming non-sag molybdenum-lanthana alloys |
| JP4276558B2 (en) * | 2003-02-25 | 2009-06-10 | 株式会社アライドマテリアル | High melting point metal material provided with oxide film layer, manufacturing method thereof, and sintering plate using the same |
| CN100439522C (en) * | 2006-12-15 | 2008-12-03 | 西部金属材料股份有限公司 | Process for preparing molybdenum-lanthanum alloy |
| CN101423911B (en) * | 2007-10-29 | 2011-09-07 | 四平市北威钼业有限公司 | Manufacturing technology of molybdenum-based rare-earth alloy slab and equipment thereof |
| CN101200786A (en) * | 2007-12-17 | 2008-06-18 | 金堆城钼业股份有限公司 | Mo-Si-Al-K hot-rolled high-heat molybdenum plate and preparation method thereof |
| CN102218535B (en) * | 2011-07-14 | 2014-05-14 | 金堆城钼业股份有限公司 | Sintering method for molybdenum product |
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