CN103978034A - Method for preparing high-flatness pure-molybdenum metal plate - Google Patents
Method for preparing high-flatness pure-molybdenum metal plate Download PDFInfo
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- CN103978034A CN103978034A CN201310049188.4A CN201310049188A CN103978034A CN 103978034 A CN103978034 A CN 103978034A CN 201310049188 A CN201310049188 A CN 201310049188A CN 103978034 A CN103978034 A CN 103978034A
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Abstract
The invention relates to a method for preparing a high-flatness pure-molybdenum metal plate. The method comprises the following steps of placing a pure-molybdenum metal plate with a thickness of 0.15 to 0.5mm into a roller mill, and rolling-milling the pure-molybdenum metal plate until the thickness is 0.1 to 0.3mm under the conditions of pressure of 20 to 50T and speed of 200 to 800r/min; overlaying at least two pure-molybdenum metal plates with the same width and thickness into the roller mill along the thickness direction, and rolling the pure-molybdenum metal plates to 0.04 to 0.2mm at least once under the condition of pressure of 15 to 30T. According to the method, procedures are simplified, the energy consumption is lowered, the consumption is reduced, the cost is lowered, and green production can be ensured.
Description
Technical field
The invention belongs to pure molybdenum processing technique field, particularly relate to a kind of method of preparing the pure molybdenum plate of high flatness.
Background technology
Molybdenum is due to its high-melting-point, high elastic modulus, good shock resistance and corrosion resistance, high conduction, heat conductivility and fabulous heat-resistant anti-fatigue performance, and the low excellent properties such as the coefficient of expansion, and widely apply the fields such as medical treatment, metallurgy, electric light source, semiconductor devices, thermal structure part and nuclear industry, being most widely used with sheet material especially wherein.In fields such as Medical CT machine collimater and detectors.Along with the development of CT machine, present collimater flatness requires to be especially less than 0.03 and to be increased in 0.02 by original, and this preparation to pure molybdenum plate has proposed new challenge.
And the milling method of traditional pure molybdenum board material is monolithic charging rolling, rolling reduction needs can continue rolling after annealing elimination machining stress after 50%, and after rolling, the same plate of pure molybdenum plate is poor larger, the serious institute's converted products flatness precision that restricts, institute's converted products can not meet product requirement.
Sum up, the problem that pure molybdenum plate method existence is prepared in traditional rolling has:
(1) rolling tonnage is large, and milling train specification requirement is high, and roll wear is serious.
(2) rolling pass is many, and production efficiency is low, waste of human resource.
(3) traditional rolling technique all adopts the method for monolithic feeding rolling, and during rolling, along with the reducing of material thickness, the total deformation of material is restricted, and needs annealing to eliminate machining stress in the middle of rolling, has increased production process, and energy consumption is large, and production cost is high.
(4) roll acts on roll-force inequality on plate and causes after plate rolling poor greatlyr with plate and in the operation of rolling, easily produces the rolling defects such as bilateral ripple, monolateral ripple or medium wave after smoothing, directly affects the size of final finished flatness.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of preparing the pure molybdenum plate of high flatness, simplifies working process, and reduces energy consumption, reduces loss, cost-saving, realizes green production.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method of preparing the pure molybdenum plate of high flatness is provided, and step is as follows:
(1), by thickness, being 0.15 to 0.5 millimeter, pure molybdenum plate is put into roller mill, with the speed of 20 to 50 tons of pressure, 200 ~ 800r/min, rolling is to the pure molybdenum plate of 0.1-0.3mm thickness;
(2), the pure molybdenum plate through-thickness stack of at least two same widths and thickness is put into roller mill,, with 15 to 30 tons of pressure, at least once, rolling to 0.04 is to 0.2mm in rolling.
The thickness of the pure molybdenum plate in step (2) is 0.04,0.08,0.12,0.16 or 0.2mm.
The roller footpath 40-100mm of described roller mill working roll, the convexity of roller mill working roll is 0.01 to 0.1mm.
Roller footpath 40,60,80 or the 100mm of described roller mill working roll, the convexity of roller mill working roll is 0.01,0.04,0.08 or 0.1mm.
Beneficial effect
The present invention has the following advantages:
(1) with traditional milling method ratio, in the operation of rolling, required draught pressure is little, and rolling pass is few.The pure molybdenum plate of raw material through-thickness is carried out to laminated multi-layer and carry out multi-disc ply rolling.Under identical rolling condition (same milling train, same roller footpath and convexity), the pure molybdenum plate of rolling stack pile, the final pure molybdenum plate of gained obviously reduces with plate is poor, and in the operation of rolling, required draught pressure reduces approximately 50%, and rolling number of times reduces approximately 70%, energy consumption is little, and equipment loss is little.Poor with plate by controlling after the rolling of pure molybdenum plate, optimize pure molybdenum plate rolling back plane degree
(2) in the operation of rolling, break through deflection and control, be rolled to and in process, do not need or reduce intermediate annealing number of times, effectively saved energy consumption, shortened production procedure.In the operation of rolling, pure molybdenum plate feeding manner is that biplate or multi-disc through-thickness stack charging.
(3) the same plate of the final pure molybdenum plate of gained approximately poor ± 3um.After cutting same specification product, final products flatness can be promoted under the degree qualification rate condition of 0.15(isoplanar by 0.02).
Accompanying drawing explanation
Fig. 1 is the process flow diagram that in the present invention, stacked 0.12mm thickness thin plate carries out roll forming.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1, a kind of method of preparing the pure molybdenum plate of high flatness, step is as follows:
(1), by thickness, being 0.15 to 0.5 millimeter, pure molybdenum plate is put into roller mill, with the speed of 20 to 50 tons of pressure, 200 ~ 800r/min, rolling is to the pure molybdenum plate of 0.1-0.3mm thickness;
(2), the pure molybdenum plate through-thickness stack of at least two same widths and thickness is put into roller mill,, with 15 to 30 tons of pressure, at least once, rolling to 0.04 is to 0.2mm in rolling.
The thickness of the pure molybdenum plate in step (2) is 0.04,0.08,0.12,0.16 or 0.2mm.
The roller footpath 40-100mm of described roller mill working roll, the convexity of roller mill working roll is 0.01 to 0.1mm.
Roller footpath 40,60,80 or the 100mm of described roller mill working roll, the convexity of roller mill working roll is 0.01,0.04,0.08 or 0.1mm.
(1), the thick pure molybdenum plate of 0.15mm is put into four-high mill, with approximately 20 tons of pressure, rolling 36 passages, rolling to 0.12 ± 0.01mm thickness;
(2), by thickness, being 0.12mm, pure molybdenum plate is divided equally along its length, through-thickness is placed with width lamination, puts into four-high mill with 12 ~ 15 tons of pressure, 22 ~ 25 passage rollings, are rolled to 0.161mm, final single-sheet thickness is 0.08 ± 0.003 millimeter.
(3), after hydrogen furnace smoothing, cut lengths are 0.08*10*27mm product, flatness is less than 0.015mm product percent of pass and is more than or equal to 95%.
Adopt same milling train, same working roll rolling parameter, by the method for conventional one-piece rolling, by the laggard interline of the thick 0.12mm of being rolled to of 0.15mm, annealed, after annealing, on same milling train, continue to be rolled to 0.08mm, required draught pressure is 32 ~ 35 tons, rolling 68 ~ 72 passages, final plate is poor with plate is ± 0.005 millimeter, after hydrogen furnace smoothing, cut lengths are 0.08*10*27mm product, and flatness is less than 0.015mm product percent of pass and is less than or equal to 65%, and flatness is less than 0.02mm product percent of pass and is less than or equal to 92%.
Claims (4)
1. a method of preparing the pure molybdenum plate of high flatness, step is as follows:
(1), by thickness, being 0.15 to 0.5 millimeter, pure molybdenum plate is put into roller mill, with the speed of 20 to 50 tons of pressure, 200 ~ 800r/min, rolling is to the pure molybdenum plate of 0.1-0.3mm thickness;
(2), the pure molybdenum plate through-thickness stack of at least two same widths and thickness is put into roller mill,, with 15 to 30 tons of pressure, at least once, rolling to 0.04 is to 0.2mm in rolling.
2. a kind of method of preparing the pure molybdenum plate of high flatness according to claim 1, is characterized in that: the thickness of the pure molybdenum plate in step (2) is 0.04,0.08,0.12,0.16 or 0.2mm.
3. a kind of method of preparing the pure molybdenum plate of high flatness according to claim 1, is characterized in that: the roller footpath 40-100mm of described roller mill working roll, the convexity of roller mill working roll is 0.01 to 0.1mm.
4. a kind of method of preparing the pure molybdenum plate of high flatness according to claim 3, is characterized in that: roller footpath 40,60,80 or the 100mm of described roller mill working roll, the convexity of roller mill working roll is 0.01,0.04,0.08 or 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049188.4A CN103978034A (en) | 2013-02-07 | 2013-02-07 | Method for preparing high-flatness pure-molybdenum metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049188.4A CN103978034A (en) | 2013-02-07 | 2013-02-07 | Method for preparing high-flatness pure-molybdenum metal plate |
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| CN103978034A true CN103978034A (en) | 2014-08-13 |
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| CN201310049188.4A Pending CN103978034A (en) | 2013-02-07 | 2013-02-07 | Method for preparing high-flatness pure-molybdenum metal plate |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117504A (en) * | 1979-02-28 | 1980-09-09 | Kobe Steel Ltd | Manufacture of steel sheet for high toughness line-pipe |
| JPS63212546A (en) * | 1987-02-28 | 1988-09-05 | 新日本製鐵株式会社 | Molybdenum-clad stainless steel plate |
| JPH05156355A (en) * | 1991-12-04 | 1993-06-22 | Nippon Steel Corp | Manufacture of double-layered steel having low yield ratio |
| US20030064245A1 (en) * | 2001-07-10 | 2003-04-03 | Vostrikov Vasily Petrovich | Clad steel rolled section for reinforcing concrete and method of production |
| CN102716908A (en) * | 2012-07-04 | 2012-10-10 | 北京科技大学 | Forming method of high-flexibility ultrathin rolled copper foil |
-
2013
- 2013-02-07 CN CN201310049188.4A patent/CN103978034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117504A (en) * | 1979-02-28 | 1980-09-09 | Kobe Steel Ltd | Manufacture of steel sheet for high toughness line-pipe |
| JPS63212546A (en) * | 1987-02-28 | 1988-09-05 | 新日本製鐵株式会社 | Molybdenum-clad stainless steel plate |
| JPH05156355A (en) * | 1991-12-04 | 1993-06-22 | Nippon Steel Corp | Manufacture of double-layered steel having low yield ratio |
| US20030064245A1 (en) * | 2001-07-10 | 2003-04-03 | Vostrikov Vasily Petrovich | Clad steel rolled section for reinforcing concrete and method of production |
| CN102716908A (en) * | 2012-07-04 | 2012-10-10 | 北京科技大学 | Forming method of high-flexibility ultrathin rolled copper foil |
Non-Patent Citations (1)
| Title |
|---|
| 罗明: "粉末冶金钼合金热锻的性能和显微组织研究", 《中国优秀硕士学位论文全文数据库(电子期刊)》 * |
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Application publication date: 20140813 |