CN103736730B - Near-solidus rolling method of foil-shaped liquid metal - Google Patents
Near-solidus rolling method of foil-shaped liquid metal Download PDFInfo
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- CN103736730B CN103736730B CN201310640369.4A CN201310640369A CN103736730B CN 103736730 B CN103736730 B CN 103736730B CN 201310640369 A CN201310640369 A CN 201310640369A CN 103736730 B CN103736730 B CN 103736730B
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Abstract
The invention discloses a near-solidus rolling method of foil-shaped liquid metal. The near-solidus rolling method comprises (1) rough rolling: feeding an alloy casting into a rough rolling machine, enabling the reduction rolling pass of the rough rolling after lubrication to be 1mm-0.8mm-0.6mm-0.4mm, and controlling temperature to be 10 DEG C higher than solidus temperature of the material; (2) intermediate rolling: after lubrication of rolling oil, enabling the reduction rolling pass of the intermediate rolling to be 0.4mm-0.2mm-0.10mm, and controlling temperature to be 8 DEG C higher than solidus temperature of the material; (3) raw material cleaning: utilizing acetone to clean alloy foil; (4 ) finish rolling: feeding the foil into a finish rolling machine, enabling the reduction rolling pass of the finish rolling to be 0.1mm-0.08mm-0.06mm-0.04mm, and controlling temperature to be 4 DEG C higher than solidus temperature of the material. By means of the near-solidus rolling method, multiphase liquid metal serves as the raw material, problems of processing brittleness and low yield of materials are effectively reduced, plasticity of materials is recovered, and resistance to deformation is improved. Products are unlikely to break off, frequency of needle-shaped holes is greatly reduced, ductility of the foil-shaped liquid metal is high during machining, and mechanical property and quality of the foil-shaped liquid metal are not affected.
Description
Technical field
The present invention relates to foil-like liquid metal rolling technique, specifically, relate to a kind of nearly solidus milling method of foil-like liquid metal.
Background technology
Along with the increase of circuit level and power, and constantly the reducing of volume, the heat flow density that chip produces also increases considerably, and the temperature of electronic equipment also increases rapidly.The electronic failure caused by heat dissipation problem also gets more and more.The heat dissipation problem effectively solving electronic device has become key technology urgently to be resolved hurrily in whole information industry development process.Along with the growth at full speed of computer chip integrated level, the heat transfer intensity of requirement is more and more higher.Metal has far above nonmetallic thermal conductivity, thus liquid metal is used for the radiating effect that thermal interfacial material can improve electronic device greatly.With the heat dissipating method that liquid metal thermal interface material is novel medium, be brand-new heat radiation theory in the field of heat management of chip.Liquid metal due to its high heat transfer coefficient 80W/mK (common silicone grease maintains about 2-3W/mK), and makes liquid metal thermal interface material be in the pyramidal top of heat radiation.
The liquid metal of foil-like directly can be prepared into thin slice as the thermal interfacial material in electronic chip under processing and serviceability temperature.But foil-like liquid metal can often use the metallic element with non-cubic structure in design and process, and not only kind is many but also content is also large.The existence of these constituent elements makes foil-like liquid metal thermal interface material elongation in forming process low, and mechanical property is deteriorated, and easily ftracture, product lumber recovery is low.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide one can reduce paper tinsel product thickness in the operation of rolling, and greatly improve the nearly solidus milling method of the elongation of material and the foil-like liquid metal of processing characteristics.
To achieve these goals, the present invention adopts following technical scheme:
A nearly solidus milling method for foil-like liquid metal, comprises the steps:
(1) roughing: alloy-steel casting is dropped into roughing mill, after by ROLLING OIL lubrication, the pressure passage of roughing is 1mm-0.8mm-0.6mm-0.4mm, and temperature to control more than the solidus temperature of material 10 DEG C.
(2) roll in: roll during foil is carried out, after being lubricated by ROLLING OIL, in the pressure passage of rolling be 0.4mm-0.2mm-0.10mm, temperature to control more than the solidus temperature of material 8 DEG C;
(3) woollen cleaning: clean with the involutory goldleaf material of acetone before finish rolling;
(4) finish rolling: paper tinsel material is dropped into finishing mill, and the pressure passage of finish rolling is 0.10mm-0.08mm-0.06mm-0.04mm; Temperature to control more than the solidus temperature of material 4 DEG C.
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts heterogeneous liquid metal to be raw material, effectively reduces the work brittleness of material and the low problem of lumber recovery by adopting the novel milling method of nearly solidus.By in roughing, in roll with the means of control temperature in finishing stands brittle to the part eliminating foil-like liquid metal, recover its plasticity and reduce resistance of deformation ability.Milling method of the present invention is in the operation of rolling (comprise roughing, in roll and finish rolling), selects the heterogeneous state that suitable temperature makes material be in all the time to comprise a certain amount of liquid phase.The few liquid phase (greatly about about 5wt%) of these content is in the border of material grains all the time in the operation of rolling, plays a part to improve material plasticity for the distortion of brittlement phase in the operation of rolling.For roughing, in roll and finish rolling, temperature general control higher than 10 DEG C of material solidus temperature, 8 DEG C and about 4 DEG C.Such rolling pattern can ensure that material can not be too firmly crisp and rupture in follow-up finishing stands, has very large compatibility of deformation ability between crystal grain and crystal grain due to the existence of liquid phase.The product finally obtained not easily ruptures, and occurs in product that the frequency of Pinhole-shaped also can reduce greatly.Milling method of the present invention makes liquid metal can have very high ductility man-hour adding, and does not affect mechanical property and the quality of the foil-like liquid metal finally obtained.
Detailed description of the invention
Embodiment 1:
Material is: 44%In-25%Bi-18%Sn-8%Zn-5%Sb (mole percent), and the solidus temperature of alloy is 85 DEG C, and liquidus temperature is 110 DEG C.The nearly solidus milling method of this material is:
(1) first step is roughing.Alloy preform is dropped into roughing mill, lubricates by ROLLING OIL.Rolling temperature controls at 95 DEG C, and the passage of rolling is: 1mm-0.8mm-0.6mm-0.4mm.Mill speed is 800-1000m/min, and draught pressure is 100-180kN, and oil pressure is 5-8Pa.
(2) second step rolls in being.Milling train in being dropped into by alloy preform, lubricates by ROLLING OIL.Rolling temperature controls at 93 DEG C, and the passage of rolling is: 0.4mm-0.2mm-0.10mm.Mill speed is 600-900m/min, and draught pressure is 80-140kN, and oil pressure is 4-9Pa.
(3) clean with the involutory goldleaf material of acetone equal solvent before finish rolling.
(4) the 3rd steps are finish rolling.Alloy preform is dropped into finishing mill.Rolling temperature controls at 89 DEG C, and the passage of rolling is: 0.10mm-0.08mm-0.06mm-0.04mm.Mill speed is 400-700m/min, and draught pressure is 60-110kN, and oil pressure is 5-6Pa.Obtained foil-like liquid metal is tailored into packaging warehouse-in after design size through cutting machine.
Claims (1)
1. a nearly solidus milling method for foil-like liquid metal, is characterized in that comprising the steps:
(1) roughing: alloy-steel casting is dropped into roughing mill, after by ROLLING OIL lubrication, the pressure passage of roughing is 1mm-0.8mm-0.6mm-0.4mm, and temperature to control more than the solidus temperature of material 10
oc;
(2) roll in: roll during foil is carried out, after being lubricated by ROLLING OIL, in the pressure passage of rolling be 0.4mm-0.2mm-0.10mm, temperature to control more than the solidus temperature of material 8
oc;
(3) woollen cleaning: clean with the involutory goldleaf material of acetone before finish rolling;
(4) finish rolling: paper tinsel material is dropped into finishing mill, and the pressure passage of finish rolling is 0.10mm-0.08mm-0.06mm-0.04mm; Temperature to control more than the solidus temperature of material 4
oc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640369.4A CN103736730B (en) | 2013-12-04 | 2013-12-04 | Near-solidus rolling method of foil-shaped liquid metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310640369.4A CN103736730B (en) | 2013-12-04 | 2013-12-04 | Near-solidus rolling method of foil-shaped liquid metal |
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| Publication Number | Publication Date |
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| CN103736730A CN103736730A (en) | 2014-04-23 |
| CN103736730B true CN103736730B (en) | 2015-03-25 |
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| CN201310640369.4A Active CN103736730B (en) | 2013-12-04 | 2013-12-04 | Near-solidus rolling method of foil-shaped liquid metal |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1136054A (en) * | 1997-07-18 | 1999-02-09 | Nippon Foil Mfg Co Ltd | Production of aluminum foil for electrode of electrolytic capacitor |
| JP2005271024A (en) * | 2004-03-24 | 2005-10-06 | Showa Denko Kk | Aluminum foil and its manufacturing method |
| CN101844152A (en) * | 2010-03-29 | 2010-09-29 | 华北铝业有限公司 | Production process of ultrathin double-face optical aluminum foil |
| CN102284483A (en) * | 2011-07-29 | 2011-12-21 | 江苏中基复合材料有限公司 | Production process for rolling light gauge aluminum foil |
| CN103028605A (en) * | 2011-09-29 | 2013-04-10 | 扬州金悦铜业有限公司 | Rolling process for preparing copper foil |
-
2013
- 2013-12-04 CN CN201310640369.4A patent/CN103736730B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1136054A (en) * | 1997-07-18 | 1999-02-09 | Nippon Foil Mfg Co Ltd | Production of aluminum foil for electrode of electrolytic capacitor |
| JP2005271024A (en) * | 2004-03-24 | 2005-10-06 | Showa Denko Kk | Aluminum foil and its manufacturing method |
| CN101844152A (en) * | 2010-03-29 | 2010-09-29 | 华北铝业有限公司 | Production process of ultrathin double-face optical aluminum foil |
| CN102284483A (en) * | 2011-07-29 | 2011-12-21 | 江苏中基复合材料有限公司 | Production process for rolling light gauge aluminum foil |
| CN103028605A (en) * | 2011-09-29 | 2013-04-10 | 扬州金悦铜业有限公司 | Rolling process for preparing copper foil |
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| CN103736730A (en) | 2014-04-23 |
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Address after: 315016 Zhejiang Province, Ningbo city Haishu District Cuibai Road No. 89 Ningbo advanced manufacturing industry public platform building 15 room 1509 Patentee after: Cao Shuai Address before: 102209 No. 6, building 202, building 20, Holiday Garden, beautiful tree, Beiqijia Town, Changping District, Beijing Patentee before: Cao Shuai |
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Effective date of registration: 20160520 Address after: 315040 Zhejiang city of Ningbo province high tech Zone Juxian Road No. 1299 Building 9 floor, room 908 Patentee after: Ningbo Shinri branch metal materials Co. Ltd. Address before: 315016 Zhejiang Province, Ningbo city Haishu District Cuibai Road No. 89 Ningbo advanced manufacturing industry public platform building 15 room 1509 Patentee before: Cao Shuai |