CN105803333A - Manufacturing method for Fe-Ni alloy sheet metal - Google Patents
Manufacturing method for Fe-Ni alloy sheet metal Download PDFInfo
- Publication number
- CN105803333A CN105803333A CN201610035422.1A CN201610035422A CN105803333A CN 105803333 A CN105803333 A CN 105803333A CN 201610035422 A CN201610035422 A CN 201610035422A CN 105803333 A CN105803333 A CN 105803333A
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- Prior art keywords
- latten
- rolling
- cold rolling
- surface roughness
- sheet metal
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
Abstract
The invention provides a manufacturing method for Fe-Ni alloy sheet metal. The manufacturing method of a material can greatly improve close adaptation through increasing the surface roughness of a thin Fe-Ni alloy sheet metal whose thickness is 0.25 mm. The manufacturing method for Fe-Ni alloy sheet metal comprises a cold rolling procedure: including performing more than once cold rolling and continuous annealing on a raw material used for cold rolling, the raw material containing 35.0-43.0 % by mass of Ni+Co, (wherein Co is 0-6.0%), lower than 0.5 % by mass of Si, lower than 1.0 % by mass of Mn, with the balance being Fe and impurities, under the conditions of roller roughness Ra=0.15-1.0 [mu]m, rolling speed being lower than 6.5 m/s, rolling oil kinematic viscosity being higher than 8 mm<2>/s, rolling oil discharge amount being lower than 35 L/s, performing final cold finish rolling in the above cold rolling procedure, to manufacture a Fe-Ni alloy sheet metal whose thickness is smaller than 0.25 mm.
Description
Technical field
The present invention relates to the manufacture method of the Fe-Ni system latten that such as lead frame, metal mask etc. use.
Background technology
The Fe-Ni system latten that lead frame, metal mask etc. use such as has the purposes fitted and use with resin etc..Method as the adaptation improved with such resin etc., can list such as: in Japanese Laid-Open Patent Publication 60-111447 publication (patent documentation 1), by Fe-Ni system latten directly being ground or carrying out pickling and make desired roughness.It addition, Japanese Unexamined Patent Publication 10-270629 publication has following invention: roll be made for dull roll (dullroll) or the Fe-Ni system latten after final rolling is carried out pickling, thus making desired roughness.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Laid-Open Patent Publication 60-111447 publication
Patent documentation 2: Japanese Unexamined Patent Publication 10-270629 publication
Summary of the invention
The problem that invention to solve
In invention shown in aforementioned patent literature 1 or 2, if the Fe-Ni system latten after cold rolling is carried out pickling, then the balance of the stress imported during rolling is had to be destroyed and produce the probability that the warpage etc. of material deforms.It addition, for the method directly ground, have abrasive particle during grinding to residue in the worry on Fe-Ni system latten surface.Also the probability that rolling condition can not be utilized to obtain desired surface roughness is had it addition, use in the method for dull roll.
In recent years, for Fe-Ni system latten, refinement small-sized, slim, high-precision along with purposes, implement etching and processing, punch process, Laser Processing etc., via dry film or coating and packaged glass, solidify the various parts such as resin and engage and use, therefore to antioxidation, raising bond strength and expect that adaptation improves.
It is an object of the invention to provide the manufacture method that can improve thin Fe-Ni system latten that thickness is below 0.25mm with the Fe-Ni system latten of the adaptation of diversified miscellaneous part.
For solving the scheme of problem
The present invention makes in view of the above problems.
Namely, the present invention is the manufacture method of a kind of Fe-Ni system latten, it includes cold rolling process: for comprising Ni+Co:35.0～43.0% (wherein in quality %, Co is 0～6.0%), below Si:0.5%, below Mn:1.0%, surplus be that the cold rolling raw material of Fe and impurity carries out more than 1 time cold rolling and continuous annealing, in gloss level of roll Ra=0.15～1.0 μm, below mill speed 6.5m/s, ROLLING OIL kinematic viscosity 8mm2The final cold rolling in aforementioned cold rolling process is carried out, thus obtaining the Fe-Ni system latten of below thickness 0.25mm when/more than s, below ROLLING OIL output 35L/s.
After carrying out aforementioned final cold rolling, aforementioned Fe-Ni system latten is carried out.
And then it is further preferred that the surface roughness of aforementioned Fe-Ni system latten is Ra=0.15～0.5 μm.
The effect of invention
By means of the invention it is possible to improve the adaptation of thin Fe-Ni system latten that thickness is below 0.25mm, it is possible to prevent the closely sealed bad of Fe-Ni system latten and closely sealed subject material.
Accompanying drawing explanation
Fig. 1 indicates that the figure of the relation of the surface roughness of the Fe-Ni system latten after planishing roll roughness that final cold rolling uses and rolling.
Fig. 2 indicates that the figure of the test film of simple and easy adaptation evaluation test.
Detailed description of the invention
Hereinafter, the present invention will be described in detail.
The composition > of < Fe-Ni system alloy
Illustrate firstly, for the chemical composition of regulation in the present invention.There is in the present invention Fe-Ni system alloy of the composition of regulation have to obtain desired thermal coefficient of expansion and necessary composition.It should be noted that consist of quality %.
[Ni+Co:35.0～43.0% (wherein, Co is 0～6.0%)]
Ni and Co is to obtain desired thermal coefficient of expansion and necessary element.When Ni+Co content is less than 35.0%, austenite structure easily becomes unstable；On the other hand, if it exceeds 43.0%, then coefficient of thermal expansion rises, and is unsatisfactory for low thermal expansion characteristics, so the content of Ni+Co is set to 35.0～43.0%.It should be noted that Co is not necessary to interpolation, it is possible in the scope to 6.0%, a part of Co of Ni is replaced.
[below Si:0.5%, below Mn:1.0%]
Si, Mn are that typically in Fe-Ni system alloy for the purpose of deoxidation trace and contain, if excessively added, easily caused by segregation, therefore Si be less than 0.5%, Mn be less than 1.0%.It should be noted that for the lower limit of Si and Mn, there is no particular limitation, adds as deoxidant element as previously mentioned, therefore Si residual about 0.05%, Mn residual about 0.05%.
[surplus is Fe and impurity]
Except above-mentioned element, it is essentially Fe, but can contain and manufacture the impurity inevitably contained.It is necessary that the impurity element of restriction especially has C, for instance, if for the purposes being etched, then its upper limit being set to 0.05%.
It addition, when improving stamping-out, it is preferable that the free-cutting machinability elements such as the S containing less than 0.020%.Improve the elements such as the such B of hot-workability and can also contain less than 0.0050%.
The cold rolling raw material > of <
In the present invention, prepare cold rolling raw material through hot rolling.Hot rolling material is formed with oxide layer, so this oxide layer such as chemically or mechanically being removed and making cold rolling raw material.It addition, in order to do not make cold rolling in the generation crack, edge of cold rolling material etc. bad, deburring and make cold rolling raw material.It should be noted that the raw-material thickness of cold rolling use is preferably about 2.0～5.0mm.
Then, aforementioned cold rolling raw material is carried out more than 1 time cold rolling and continuous annealing, makes desired thickness of slab, implement final cold rolling.Rolling rate before final cold rolling is set to 50～85%, continuous annealing in the heating furnace of 850～1000 DEG C with 10～60 seconds logical plates.And, it is preferred that the stage before carrying out final cold rolling makes hardness be that 120～150HV then carries out final cold rolling.
Then, final cold rolling condition is described in detail.
In the present invention, in final cold rolling, the thickness of Fe-Ni system latten is made for below 0.25mm.Being made for the reason of below 0.25mm is such as thickness required by lead frame, metal mask purposes.It should be noted that thickness of slab is preferably below 0.15mm.
< gloss level of roll >
In the present invention it is important that, make in final cold rolling use gloss level of roll be Ra=0.15～1.0 μm.It should be noted that gloss level of roll refers to the roughness on the surface of the roller that rolling uses.Its surface roughness is determined mainly by the surface roughness transfer of the roller used in rolling by rolling the surface roughness of the Fe-Ni system latten of processing and manufacturing.Therefore, if the surface roughness of roll self is low, then the surface roughness improving the Fe-Ni system latten obtained by rolling processing becomes extremely difficult.Therefore, the lower limit of gloss level of roll is set to Ra=0.15 μm.The lower limit of gloss level of roll is preferably 0.20 μm.
It addition, by making the value of gloss level of roll higher, the value of the surface roughness of the Fe-Ni system latten obtained also uprises.But, even with the roller that surface roughness value is too high, the load etc. applied due to pair roller surface in rolling causes roller abrasion, is difficult to obtain the roughness of high level.Certainly, frictional resistance increases and causes that the abrasion powder generated by processing increases, and the surface cleanness of Fe-Ni system latten worsens, have on the contrary become hinder adaptation will because of probability.Therefore, the upper limit of gloss level of roll is set to 1.0 μm.The upper limit of preferred gloss level of roll is 0.50 μm.It should be noted that the Ra in this specification refers to the arithmetic average roughness Ra by determining in JIS-B-0601 (2013).
In the present invention, except aforesaid gloss level of roll, mill speed, ROLLING OIL kinematic viscosity and ROLLING OIL output, are located at suitable scope.These 3 important documents are requisite factors for the surface roughness of adjustment Fe-Ni system latten.Particularly, when carrying out final cold rolling, any one in these 3 important documents fall the scope that specifies in the present invention outer time, become to obtain desired surface roughness.
< mill speed >
In the present invention, the mill speed of final cold rolling is set to below 6.5m/s.Mill speed is set to 6.5m/s the following is in order to the surface roughness of Fe-Ni system latten is set to Ra=0.15～0.5 μm.If mill speed is too fast, then the biting amount of ROLLING OIL increases, and the contact area of roller and Fe-Ni system latten reduces, and therefore the roughness of roller becomes to be difficult to be transferred, the surface roughness reduction of Fe-Ni system latten.Therefore, mill speed is set to below 6.5m/s by the present invention.The upper limit of preferred mill speed is 4.0m/s.It is more preferably 3.5m/s.On the other hand, if mill speed is excessively slow, then causing productivity ratio and reduce and cost increase, therefore the lower limit of mill speed can be set to 0.5m/s.The lower limit of preferred mill speed is 1.0m/s.It is more preferably 2.0m/s.
< ROLLING OIL kinematic viscosity >
It addition, the kinematic viscosity of the ROLLING OIL used by the milling train used in final cold rolling is set to 8mm2/ more than s.The kinematic viscosity of ROLLING OIL is set to 8mm2/ s is above in order to the surface roughness of Fe-Ni system latten is set to Ra=0.15～0.5 μm.If the kinematic viscosity of ROLLING OIL is low, then the ROLLING OIL biting amount in rolling increases, and the contact area of roller and Fe-Ni system latten reduces, and therefore the roughness of roller becomes to be difficult to be transferred, the surface roughness reduction of Fe-Ni system latten.Therefore, the kinematic viscosity of ROLLING OIL is set to 8mm2/ more than s.The lower limit of the kinematic viscosity of preferred ROLLING OIL is 9mm2/s.If it addition, kinematic viscosity is too high, then there is the lubrication of Fe-Ni system latten in rolling and roller to reduce and cause the worry of the problems such as the increase of roll thermal crown (ThermalCrown), fire check.Therefore, the upper limit of kinematic viscosity is set to 40mm2/s.The upper limit of the kinematic viscosity of ROLLING OIL is preferably 35mm2/ s, and then it is preferably 20mm2/s。
< ROLLING OIL output >
Together with above-mentioned ROLLING OIL kinematic viscosity, the roughness of Fe-Ni system latten is also brought impact by ROLLING OIL output.If ROLLING OIL output is many, then ROLLING OIL biting amount increases, and along with the minimizing of contact area, the roughness of roller is difficult to be transferred.Therefore, ROLLING OIL output, is set to below 35L/s.The upper limit of ROLLING OIL output is preferably 30L/s, and then is preferably 25L/s.It should be noted that, for the unlubricated rolling that it would be desirable ROLLING OIL output 0L/s the roughness of transfer roll, but in this situation, have and cause the abrasion powder increase that frictional resistance becomes greatly, generated by processing, thus the worry that the surface cleanness of Fe-Ni system latten worsens.Further, since rolled excessively harsh when, therefore also there is the probability producing the rough surface of roll, fire check etc..Therefore, using under rolling oil condition, the lower limit of ROLLING OIL output can be set to 1L/s.The lower limit of ROLLING OIL output is preferably 5L/s, and then is preferably 10L/s.
It addition, for the width of Fe-Ni system latten, it does not have limit especially, in order to keep better surface cleanness, it is preferable that be below 1100mm by width setup.
< matting >
It addition, for the surface cleanness improving Fe-Ni system latten, it is preferable that after carrying out final cold rolling, implement matting.This is because, adaptation is also affected by the impact of the cleannes on the Fe-Ni system latten surface engaged.Particularly, implement plastic working Fe-Ni system latten surface in most cases be attached with processing way in produce abrasion powder, add the oil used man-hour.These foreign bodies become hinder adaptation will be because of, therefore to improve adaptation further and be preferable to carry out matting.When being carried out operation, it is preferred to use structure is the rinse bath that can hydrocarbon system solvent, basic solvent etc. be used under spraying or stirring.Additionally, cleanout fluid system is set to the circular type with filter plant, this filter plant is filtered for the cleanout fluid filter containing the foreign body that cleaning is removed, and configure the equipment being dried by rinse bath material out, it is possible to be carried out continuously, it is possible to maintain high productivity ratio economically.
Then, the Fe-Ni system latten for obtaining by the manufacture method of the Fe-Ni system latten of the above-mentioned present invention illustrates.
< surface roughness >
In the present invention, it is Ra=0.15～0.5 μm by making the surface roughness of the Fe-Ni system latten obtained, increases the contact area with miscellaneous part, and utilization is formed at the concavo-convex of plate surface and improves anchor effect, it is possible to improve by leaps and bounds adaptation.
When surface roughness Ra is less than 0.15 μm, contact area tails off and the concavo-convex of surface also reduces, and therefore reduces with the closing force of above-mentioned grafting material.Therefore, surface roughness is set to more than Ra=0.15 μm.It addition, from the viewpoint of adaptation the thicker person of preferred surface roughness.But, if rough surface is spent slightly, then when implementing the etching and processing of fine, can become on the contrary hinder machining accuracy will be because of.Therefore, higher limit is 0.5 μm.Preferred surface roughness is 0.15～0.4 μm.
[embodiment]
(embodiment 1)
Carry out vacuum melting, evenly heating heat treatment, hot pressing and hot rolling, prepare the hot rolling material of thickness 3.0mm.Measuring the hardness of hot rolling material, result is 170～190HV.The chemical composition of hot rolling material is shown in table 1.
Afterwards, removing the oxide layer on hot rolling material surface with chemical grinding, mechanical lapping and implement roughing, be full of cracks when be will be located in the hot rolling at both ends, raw material width direction by finishing (trim) processing is removed, thus preparing cold rolling raw material.
Then, aforementioned cold rolling raw material is repeated to each 2 times cold rolling and after continuous annealing, the condition shown in table 2 is utilized to carry out final cold rolling, thus manufacturing the Fe-Ni system latten of example of the present invention (No.1～3), comparative example (No.11,12).The road number of times of final cold rolling is all set to 1 time in example of the present invention and comparative example, and final thickness is made for 0.1mm.It should be noted that make the wide material that the hardness before final cold rolling is 135HV and width is 800mm.The surface roughness (arithmetic average roughness) of the Fe-Ni system latten of the example of the present invention (No.1～3) obtained and comparative example (No.11,12) is shown in Table 2.It addition, the relation of the surface roughness of Fe-Ni system latten after the gloss level of roll final cold rolling important in the present invention used and final cold rolling is shown in Fig. 1.It should be noted that in table 2 and Fig. 1, the surface roughness of Fe-Ni system latten is expressed as " material surface roughness ".This gloss level of roll uses the portable roughmeter of contact to measure the length of 4mm, material surface roughness uses contact surface roughness meter to measure the length of 4mm, thus measuring arithmetic average roughness Ra.
[table 1]
(quality %)
| C | Si | Mn | Ni | Co | Surplus |
| 0.01 | 0.1 | 0.5 | 40.8 | 0.3 | Fe and inevitable impurity |
[table 2]
※ gloss level of roll and material surface roughness represent the meansigma methods measuring 3 times with contact roughmeter.
Result shown in table 2 and Fig. 1 can confirm that, the gloss level of roll that final cold rolling important for purposes of the invention uses is set to Ra=0.15～1.0 μm, in No.1～4 (example of the present invention) thick compared with comparative example, the surface roughness of the Fe-Ni system latten scope in Ra=0.15～0.5 μm, it is shown that higher than the value of comparative example.It addition, when No.1 and the No.2 of example of the present invention is compared, it is possible to confirm that the Ra value accelerating the surface roughness of the Fe-Ni system latten of the No.2 of mill speed reduces.Furthermore it is possible to confirm, the Ra value about the surface roughness of No.4, the Fe-Ni system latten adding ROLLING OIL output compared to No.1 compares No.1 reduction.If thus it has been confirmed that when mill speed is too fast or increases ROLLING OIL output, the Ra value reduction of the surface roughness of Fe-Ni system latten.
According to above-mentioned result, for example of the present invention and comparative example, making the surface roughness of Fe-Ni system latten ratio existing thick and be set to Ra=0.15～0.5 μm, the effect thus whether improved for adaptation confirms.In the confirmation of effect, No.1, No.3, No.12 that mill speed is the same terms are carried out to the confirmation of effect.
For the evaluation of closing force, carry out brief appraisal by the closing force of tension test pair with curable resin.It should be noted that for the adaptation playing curable resin and test film fully, test film use impregnated in the hydrocarbon system solvent being stirred in rinse bath, the then dry and test film that obtains.This brief appraisal method and evaluation result described below.
< utilizes the closing force evaluation methodology > of tension test
Closing force evaluation carries out according to below step.
(1) according to each condition (No.1,3,12), the tension test sheet of length 200mm, chuck segment width 35mm, parallel portion length 75mm, width 12.5mm is made.
(2) cut off at the length direction central part of test film.
(3) test film is carried out.
(4), after epoxy resin and firming agent are carried out mix and blend with the ratio of 10:1, the unilateral end (region of width 12.5mm × length 12.5mm) of a test film of cut-out is coated.
(5) make another test film overlapping with resin-coated portion (width 12.5mm × length 12.5mm) and engage.((A), (B) of Fig. 2)
(6) for the test film of joint applies load (0.4g/mm2), keep 10 hours.
(7) test film for making in aforementioned manners, implements tension test (initial load: 0.1kN, speed: 2mm/ minute), measures hot strength.
Adaptation evaluation is carried out according to the step of above-mentioned (1)～(7).Test film after evaluation test result is shown in (C) of Fig. 2, evaluation result is shown in table 3.
[table 3]
By the evaluation result of table 3 it can be seen that apply No.1 and 3 of the method for the present invention compared with comparative example No.12, the allowable load of per unit bonding area improves about 1.4～2.2 times.It follows that according to the present invention, for thickness be below 0.25mm thin Fe-Ni system latten for, by the surface roughness improving Fe-Ni system latten compared with the past and be set to Ra=0.15～0.5 μm, it is possible to improve adaptation.Thereby, it is possible to prevent the closely sealed bad of Fe-Ni system latten and closely sealed subject material.
Claims (3)
1. the manufacture method of a Fe-Ni system latten, it is characterized in that, including cold rolling process: for count with quality % comprise Ni+Co:35.0～43.0%, wherein Co be 0～6.0%, below Si:0.5%, below Mn:1.0%, surplus be Fe and impurity cold rolling raw material carry out more than 1 time cold rolling and continuous annealing, in gloss level of roll Ra=0.15～1.0 μm, below mill speed 6.5m/s, ROLLING OIL kinematic viscosity 8mm2The final cold rolling in described cold rolling process is carried out, thus obtaining the Fe-Ni system latten of below thickness 0.25mm when/more than s, below ROLLING OIL output 35L/s.
2. the manufacture method of Fe-Ni system according to claim 1 latten, it is characterised in that after carrying out described final cold rolling, is carried out described Fe-Ni system latten.
3. the manufacture method of Fe-Ni system according to claim 1 and 2 latten, it is characterised in that the surface roughness of described Fe-Ni system latten is Ra=0.15～0.5 μm.
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| CN202210752860.5A CN115069772A (en) | 2015-01-20 | 2016-01-19 | Method for producing Fe-Ni alloy thin plate |
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| JP2015-008503 | 2015-01-20 | ||
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| JP2015192679A JP6628082B2 (en) | 2015-01-20 | 2015-09-30 | Method for producing Fe-Ni alloy thin plate |
| JP2015-192679 | 2015-09-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642289A (en) * | 2016-08-31 | 2019-04-16 | 日立金属株式会社 | Metal mask raw material and its manufacturing method |
| CN110352101A (en) * | 2017-03-01 | 2019-10-18 | 日立金属株式会社 | The manufacturing method and Fe-Ni system latten of Fe-Ni system latten |
| CN112322993A (en) * | 2020-11-19 | 2021-02-05 | 苏州钿汇金属材料有限公司 | Ultrathin iron-nickel alloy material and manufacturing method thereof |
| CN112752860A (en) * | 2018-09-27 | 2021-05-04 | 日铁化学材料株式会社 | Metal mask material, manufacturing method thereof and metal mask |
| CN113727788A (en) * | 2019-04-22 | 2021-11-30 | 杰富意钢铁株式会社 | Method for producing non-oriented electromagnetic steel sheet |
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