JP2013244526A - Member for vehicle using steel plate having fingerprint and stain made hardly conspicuous - Google Patents
Member for vehicle using steel plate having fingerprint and stain made hardly conspicuous Download PDFInfo
- Publication number
- JP2013244526A JP2013244526A JP2012121608A JP2012121608A JP2013244526A JP 2013244526 A JP2013244526 A JP 2013244526A JP 2012121608 A JP2012121608 A JP 2012121608A JP 2012121608 A JP2012121608 A JP 2012121608A JP 2013244526 A JP2013244526 A JP 2013244526A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- fingerprint
- convex
- rolling
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 102
- 239000010959 steel Substances 0.000 title claims abstract description 102
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 23
- 239000010935 stainless steel Substances 0.000 claims abstract description 22
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 238000007747 plating Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 229910018134 Al-Mg Inorganic materials 0.000 description 4
- 229910018467 Al—Mg Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910007570 Zn-Al Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 239000010731 rolling oil Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- -1 electrogalvanizing Inorganic materials 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
Description
本発明は、耐食性に優れるとともに、付着した指紋や汚れを目立ち難くした鋼板を用いた車両用部材に関する。 The present invention relates to a vehicle member that uses a steel plate that has excellent corrosion resistance and that makes attached fingerprints and stains less noticeable.
昨近、例えばＡＴレバー等の操作レバー、操作パネル、モール、ドアノブ、電車等の手摺や扉等の車両用部材には、耐食性が優れるために長期に亘り外観低下の少ないステンレス鋼板が用いられるようになっている。
しかも、それらに用いられるステンレス鋼板には、ＢＡ仕上げや鏡面等の表面が平滑な表面仕上げにしたものの他に、意匠性や機能性のために表面にＨＬ等の直線状の研磨加工を施したものや、バイブレーション研磨等の曲線状の研磨加工を施したもの、ドット状の凹凸加工を施したもの等が使用されている。
Recently, for example, an operation lever such as an AT lever, an operation panel, a mall, a doorknob, a rail for a train or a vehicle member such as a door is made of a stainless steel plate that has little deterioration in appearance for a long time because of excellent corrosion resistance. It has become.
Moreover, the stainless steel plates used for them were subjected to a linear polishing process such as HL on the surface for design and functionality in addition to those with a smooth surface finish such as BA finish and mirror surface. Those having a curved polishing process such as vibration polishing and those having a dot-like concavo-convex process are used.
また、ステンレス鋼板以外にも、電気亜鉛めっき鋼板、Ｚｎ−Ａｌ合金めっき鋼板、Ｚｎ−Ａｌ−Ｍｇ合金めっき鋼板等のＺｎ系のめっき鋼板、電気銅めっき鋼板、アルミめっき鋼板等のめっき鋼板も、耐食性に優れるために多用されている。
上記のような用途に供されるステンレス鋼板やめっき鋼板は優れた耐食性を持つために綺麗さを長期間保つことができ、これが重用される一要因となっている。
しかしながら、上記で例示される車両用部材は、常に手で触れて使用されるものであるため、汚れた手で触れたときに指紋が付着し、さらに指紋に由来する脂肪分に粉塵等が堆積して汚れとなり、綺麗さが台無しになるような場面に多々あるのが現状である。
このような背景から、昨今、車両用部材に用いる鋼板として防汚性を考慮した耐指紋性機能を有する高耐食性鋼板の必要性が高まっており、各種の提案がなされている。
In addition to stainless steel sheets, zinc-coated steel sheets such as electrogalvanized steel sheets, Zn-Al alloy-plated steel sheets, Zn-Al-Mg alloy-plated steel sheets, plated steel sheets such as electrolytic copper-plated steel sheets, aluminum-plated steel sheets, Often used for excellent corrosion resistance.
Stainless steel plates and plated steel plates used for the above applications have excellent corrosion resistance, so that they can be kept clean for a long period of time.
However, since the vehicle member exemplified above is always used by touching with a hand, a fingerprint adheres when touched with a dirty hand, and dust or the like accumulates on fat derived from the fingerprint. There are a lot of situations where it becomes dirty and the beauty is ruined.
Against this background, the need for a highly corrosion-resistant steel sheet having a fingerprint resistance function considering antifouling properties is increasing as a steel sheet used for a vehicle member, and various proposals have been made.
例えば特許文献１では、算術平均粗さＲａが０.５〜４.５μｍのダルロールによる軽圧延で凹凸形状の表面にし、巨視的な乱反射を与えた後、非粒界侵食型の顔洗液のエッチングで微細凹凸をつけて微視的乱反射を生じさせることにより意匠性及び耐指紋性を有する鋼板を製造している。 For example, in Patent Document 1, a rough surface is formed by light rolling with a dull roll having an arithmetic average roughness Ra of 0.5 to 4.5 μm, and macroscopic irregular reflection is given. Steel sheets having design properties and fingerprint resistance are manufactured by providing microscopic irregularities by providing fine irregularities by etching.
また特許文献２では、耐汚染性などに優れたステンレス鋼帯の製造方法として、冷延ステンレス鋼帯を軽酸洗により平滑な表面に仕上げた後に、鏡面仕上げロールによる調質圧延を行ない、次いでダルロールによる調質圧延を行なうことで丸みのある凹凸形状を有し、凹凸の算出平均粗さＲａを０．５〜１．７μｍに仕上げるものが提案されている。
さらに特許文献３では、耐指紋性発揮の要因として、鋼板表面の十点平均粗さＲｚ、表面凹凸の平均間隔Ｓｍ、凸部面積率を挙げ、耐汚れ性と耐食性に優れたステンレス鋼板として、十点平均粗さＲｚが３.５μｍ以上、６.５μｍ以下、表面凹凸の平均間隔Ｓｍが１２０μｍ以上、２５０μｍ以下、凸部面積率が１５％以上、４５％以下の表面を有するものが提案されている。
Moreover, in patent document 2, after finishing a cold-rolled stainless steel strip to the smooth surface by light pickling as a manufacturing method of the stainless steel strip excellent in stain resistance etc., temper rolling with a mirror finish roll is performed, It has been proposed to have a rounded uneven shape by performing temper rolling with a dull roll and finish the calculated average roughness Ra of the unevenness to 0.5 to 1.7 μm.
Furthermore, in Patent Document 3, as a factor for exhibiting fingerprint resistance, the ten-point average roughness Rz of the steel sheet surface, the average interval Sm of the surface irregularities, and the convex area ratio, as a stainless steel sheet excellent in dirt resistance and corrosion resistance, A surface having a ten-point average roughness Rz of 3.5 μm or more and 6.5 μm or less, an average interval Sm of surface irregularities of 120 μm or more and 250 μm or less, and a convex area ratio of 15% or more and 45% or less is proposed ing.
ところで、上記の特許文献３では、耐指紋性機能を発揮するため要因として、鋼板表面を十点平均粗さＲｚ、表面凹凸の平均間隔Ｓｍ、凸部面積率で規定しているが、凸部面積率については、鋼板表面の凸部と凹部との境界が不明瞭であり、その測定が困難であると共に、安定した製造が困難である。また、特許文献１や特許文献２では、酸洗＋ダル圧延＋エッチングや鏡面仕上げロールによる調質圧延＋ダルロールによる調質圧延と非常に多工程となっている。
本発明は、このような問題点を解消するために案出されたものであり、ダル圧延により簡便に製造可能な、付着した指紋や汚れを目立ち難くした鋼板を用いた車両用部材を提供することを目的とする。
By the way, in said patent document 3, although the steel plate surface is prescribed | regulated by ten-point average roughness Rz, the average space | interval Sm of surface unevenness | corrugation, and a convex part area ratio as a factor in order to exhibit a fingerprint-proof function, convex part Regarding the area ratio, the boundary between the convex part and the concave part on the surface of the steel sheet is unclear, and its measurement is difficult and stable production is difficult. Moreover, in patent document 1 and patent document 2, pickling + dull rolling + etching and temper rolling by mirror finish roll + temper rolling by dull roll and very many processes.
The present invention has been devised to solve such problems, and provides a vehicle member using a steel plate that can be easily manufactured by dull rolling and that makes attached fingerprints and dirt less noticeable. For the purpose.
本発明の付着した指紋や汚れが目立ち難い鋼板を用いた車両用部材は、その目的を達成するため、ダルロールを用いた軽圧延１パスにより、凹部が形成されるとともに当該凹部以外の未変形のフラット部分を凸部として残存させた凹凸形状の表面を有する鋼板であって、前記凹凸の算術平均粗さＲａが３.０〜８.５μｍ、平均間隔Ｓｍが１５０〜６００μｍ、フラット部分（凸部）面積率が２５％〜６０％である指紋や汚れが目立ち難い鋼板を適宜形状に成形加工して用いられる。
上記鋼板としては、耐食性に優れたステンレス鋼板又はめっき鋼板が好ましい。
In order to achieve the purpose of the vehicle member using the steel plate with less fingerprints and dirt that are attached, the concave portion is formed by light rolling using a dull roll and the undeformed portions other than the concave portion are not deformed. A steel plate having a concavo-convex surface in which a flat portion remains as a convex portion, and the arithmetic average roughness Ra of the concavo-convex portion is 3.0 to 8.5 μm, an average interval Sm is 150 to 600 μm, a flat portion (convex portion) ) A steel sheet with an area ratio of 25% to 60%, which is hardly noticeable with fingerprints and dirt, is used by appropriately forming into a shape.
As said steel plate, the stainless steel plate or plated steel plate excellent in corrosion resistance is preferable.
本発明で用いられる鋼板は、素材鋼板に、４.０〜９.０μｍの算術平均粗さＲａを付したダルロールを用いて被圧延鋼板の板厚が減少しないようにダルロールの凹凸模様を鋼板に１００％転写させるのではなく数１０％の転写に留める１パスの軽圧延を施すことにより製造される。
なお、本明細書中におけるＲａ及びＳｍは、ＪＩＳ
Ｂ ０６０１の規定に準じて測定したものである。
また、本請求項に係る発明は、前記で例示したような車両用部材を対象としている。
The steel plate used in the present invention has a dull roll uneven pattern on the steel plate so that the thickness of the steel plate to be rolled is not reduced by using a dull roll having an arithmetic average roughness Ra of 4.0 to 9.0 μm on the raw steel plate. Instead of 100% transfer, it is manufactured by carrying out a one-pass light rolling that keeps transfer of several tens of percent.
In this specification, Ra and Sm are JIS
It is measured according to the regulations of B 0601.
Further, the invention according to this claim is directed to a vehicle member as exemplified above.
本発明により提供される付着した指紋や汚れが目立ち難い鋼板を用いた車両用部材は、好ましくは耐食性に優れたステンレス鋼板やめっき鋼板等の鋼板を素材とし、その表面にダルロールの凹凸模様を鋼板に１００％転写させるのではなく数１０％の転写に留める軽圧延を１パスで施すことにより、凹部が形成されるとともに当該凹部以外の未変形のフラット部分を凸部として残存させた凹凸形状を有するとともに、前記凹凸の算術平均粗さＲａ、平均間隔Ｓｍ、及びフラット部分（凸部）面積率を細かく調整されている。このため、付着した指紋や汚れが目立たなくなっている。
したがって、本発明により、ＡＴレバー等の操作レバー、操作パネル、モール、ドアノブ、電車等の手摺や扉等で例示される車両用部材として、耐食性に優れ、かつ指紋や汚れが目立ち難いものが安価で提供されることになる。
The member for a vehicle using a steel plate that is not easily noticeable with attached fingerprints or dirt provided by the present invention is preferably made of a steel plate such as a stainless steel plate or a plated steel plate having excellent corrosion resistance, and the surface of the steel plate has a dull roll uneven pattern on its surface. By applying light rolling that does not transfer 100% to several tens of percent but in one pass, a concave and convex shape is formed in which a concave portion is formed and an undeformed flat portion other than the concave portion remains as a convex portion. In addition, the arithmetic average roughness Ra, the average interval Sm, and the flat portion (convex portion) area ratio of the unevenness are finely adjusted. For this reason, the attached fingerprint and dirt are not noticeable.
Therefore, according to the present invention, as a vehicle member exemplified by an operating lever such as an AT lever, an operating panel, a molding, a door knob, a railing of a train, a door, etc., a material having excellent corrosion resistance and less noticeable fingerprints and dirt is inexpensive. Will be offered at.
前記したように、車両用部材には、耐食性が優れるために長期に亘り外観低下の少ないステンレス鋼板やめっき鋼板が多用されるようになっている。そして、このような用途に供されるステンレス鋼板やめっき鋼板は優れた耐食性を持つために綺麗さを長期間保てることでき、これが重用される一要因となっている。
しかしながら、車両用部材は、手で触れて使用されるものであるため、汚れた手で触れたときに指紋が付着し、さらに指紋に由来する脂肪分に粉塵等が堆積して汚れとなり、綺麗さが台無しになるような場面に多々あるのが現状である。
As described above, a stainless steel plate or a plated steel plate that is less likely to deteriorate in appearance over a long period of time is often used as a vehicle member because of its excellent corrosion resistance. And since the stainless steel plate and plated steel plate which are provided for such an application have excellent corrosion resistance, they can be kept clean for a long period of time, which is one of the factors that are heavily used.
However, since the members for vehicles are used by touching them with their hands, fingerprints are attached when they are touched with dirty hands, and dust is deposited on the fat derived from the fingerprints and becomes dirty, which is beautiful. There are a lot of situations where the mess is ruined.
そこで、例えば前記特許文献３に見られるように、焼鈍・酸洗した後の鋼板を冷間仕上げ圧延する際に、最終パスをダルロールにより、十点平均粗さＲｚが３.５μｍ以上、６.５μｍ以下、表面凹凸の平均間隔Ｓｍが１２０μｍ以上、２５０μｍ以下、凸部面積率が１５％以上、４５％以下の表面に仕上げることにより、耐汚れ性と耐食性に優れた鋼板が得られる。
しかしながら、前記特許文献３で提案される技術を付加したステンレス鋼板やめっき鋼板でも、付着した指紋の目立ち易さについては十分ではない。さらに目立ち難くした鋼板が望まれる。
Therefore, as seen in Patent Document 3, for example, when the steel sheet after annealing and pickling is cold finish-rolled, the final pass is made by dull roll, and the ten-point average roughness Rz is 3.5 μm or more, 6. Finishing the surface with a surface roughness of 5 μm or less, an average interval Sm of surface irregularities of 120 μm or more and 250 μm or less, and a convex area ratio of 15% or more and 45% or less provides a steel sheet having excellent stain resistance and corrosion resistance.
However, even a stainless steel plate or a plated steel plate to which the technique proposed in Patent Document 3 is added is not sufficient for the conspicuousness of attached fingerprints. A steel plate that is less noticeable is desired.
本発明者らは、前記特許文献１，２，３で提案される技術を付加した鋼板よりも、付着した指紋がさらに目立ち難くする手段について鋭意検討を重ねてきた。
その過程で、凹凸の深さをより深くすることも検討したが、手を強く押し付けて付着させた指紋の目立ち易さは解消しなかった。
そこで、本発明者は凹凸の算術平均粗さＲａや平均間隔Ｓｍのみではなく、凹凸そのものの形状が影響していると想定して、ダル圧延によりロールの凹凸模様を鋼板に１００％転写させるのではなく、軽圧延による数１０％の転写に留めて、表面に素材鋼板の表面が残存する凹凸を形成し、付着した指紋の目立ち易さ検討した。
The inventors of the present invention have made extensive studies on means for making the attached fingerprints less noticeable than the steel sheets to which the techniques proposed in Patent Documents 1, 2, and 3 are added.
In the process, we also considered increasing the depth of the concavities and convexities, but the conspicuousness of the fingerprints attached by pressing the hand strongly did not disappear.
Therefore, the present inventor assumes that not only the arithmetic average roughness Ra and the average interval Sm of the unevenness but also the shape of the unevenness itself affects, and 100% of the uneven pattern of the roll is transferred to the steel plate by dull rolling. Instead, it was limited to transfer of several tens of percent by light rolling, and an unevenness in which the surface of the material steel plate remained was formed on the surface, and the conspicuousness of the attached fingerprint was examined.
その結果、表面に凹凸を形成したダルロールの軽圧延１パスにより、表面に素材鋼板の表面を残存させた凹凸を形成し、鋼板の表面形状を凹凸の算術平均粗さＲａ、凹凸平均間隔Ｓｍ、フラット部分（凸部）面積率で規定することにより、従来よりも付着した指紋が目立ち難く、また従来法と比べて工程省略が可能となり、容易に製造可能な鋼板を提供できることを見出した。
以下にその詳細を説明する。
As a result, a dull roll light rolling 1 pass with irregularities formed on the surface forms irregularities with the surface of the raw steel plate remaining on the surface, and the surface shape of the steel sheet is calculated as the arithmetic average roughness Ra of the irregularities, the irregularity average interval Sm, It has been found that by defining the area ratio of the flat part (convex part), the attached fingerprint is less conspicuous than in the prior art, and the process can be omitted as compared with the conventional method, and a steel sheet that can be easily manufactured can be provided.
Details will be described below.
鋼板に付着した指紋や汚れが目立たようにするためには、当該鋼板はさび難く、長期間に亘ってその表面の綺麗さを維持できる鋼板であることが好ましい。このため、本発明では、素材鋼板としてステンレス鋼板やめっき鋼板を用いることが好ましいとしているが、普通鋼や特殊鋼などの裸材であっても規定の凹凸形状を付与することで指紋や汚れを目立ち難くする効果が得られるので、ステンレス鋼板やめっき鋼板に限定されるものではない。
ステンレス鋼板としては、ＳＵＳ３０４やＳＵＳ３１６を代表とするオーステナイト系ステンレス鋼板であってもよいし、ＳＵＳ４３０で代表されるフェライト系ステンレス鋼板であってもよい。
In order to make the fingerprints and dirt attached to the steel plate stand out, the steel plate is preferably a steel plate that is difficult to rust and can maintain its clean surface over a long period of time. For this reason, in the present invention, it is preferable to use a stainless steel plate or a plated steel plate as the material steel plate. However, even if it is a bare material such as ordinary steel or special steel, it is possible to remove fingerprints and stains by providing a specified uneven shape. Since the effect of making it inconspicuous is obtained, it is not limited to a stainless steel plate or a plated steel plate.
As the stainless steel plate, an austenitic stainless steel plate represented by SUS304 or SUS316 may be used, or a ferritic stainless steel plate represented by SUS430 may be used.
また、めっき鋼板としては、電気亜鉛めっき鋼板、Ｚｎ−Ａｌ合金めっき鋼板、Ｚｎ−Ａｌ−Ｍｇ合金めっき鋼板等のＺｎ系のめっき鋼板、電気銅めっき鋼板、アルミめっき鋼板等のめっき鋼板等が使用される。特に、Ａｌ：４.０〜１０.０質量％、Ｍｇ：１.０〜４.０質量％を含み、残部がＺｎからなるもの、さらに微量のＴｉやＢを含むもの、或いはさらにＳｉを含むＺｎ−Ａｌ−Ｍｇ系合金めっきが施された溶融めっき鋼板が好ましい。
そして、このめっき層に所望のＲａの凹凸を形成させるため、層厚１０μｍ以上のめっき層を形成した鋼板を素材とすることが好ましい。
In addition, as plated steel sheets, zinc-based plated steel sheets such as electrogalvanized steel sheets, Zn-Al alloy-plated steel sheets, Zn-Al-Mg alloy-plated steel sheets, plated steel sheets such as electrolytic copper-plated steel sheets, aluminum-plated steel sheets, etc. are used. Is done. In particular, Al: 4.0 to 10.0% by mass, Mg: 1.0 to 4.0% by mass, the balance being made of Zn, further containing a trace amount of Ti or B, or further containing Si A hot-dip galvanized steel sheet on which Zn—Al—Mg alloy plating is applied is preferable.
And in order to form the unevenness | corrugation of desired Ra in this plating layer, it is preferable to use the steel plate which formed the plating layer with a layer thickness of 10 micrometers or more as a raw material.
上記のような鋼板を素材とし、図３に示すように、表面に凹凸を形成したダルロールを用いて被圧延鋼板の板厚が減少しないように１パスの軽圧延を施し、鋼板表面に凹部を形成するとともに当該凹部以外の未変形のフラット部分を凸部として残存させた凹凸を形成する。
従来のように、表面に凹凸を形成したダルロールを用いて凹凸が１００％転写されるように圧延すると、鋼板表面は、図１（ａ）に見られるように、凸部の頂点から次第に湾曲しながら溝が形成される形態の凹凸が形成される。
The steel plate as described above is used as a raw material, and as shown in FIG. 3, a dull roll having irregularities on the surface is used to perform one pass of light rolling so that the thickness of the rolled steel plate does not decrease, and a concave portion is formed on the steel plate surface. An unevenness is formed by forming and leaving an undeformed flat portion other than the concave portion as a convex portion.
When rolled so that the irregularities are transferred 100% using a dull roll having irregularities formed on the surface as in the prior art, the steel plate surface gradually curves from the apex of the convex portions as seen in FIG. However, the unevenness | corrugation of the form in which a groove | channel is formed is formed.
凸部形状が曲線的で、しかも凸部傾斜が緩やかだと、指紋押印の時に指の加圧力が大きいときに指紋が広範囲につき易くなる。そして図２の（ａ）に見られるように、指紋が広範囲から見え易くなる。すなわち、耐指紋性が損なわれることになる。
耐指紋効果発揮のためには、指の加圧力に左右されず接触範囲はできるだけ小さい方がよい。
If the convex shape is curvilinear and the convex portion slope is gentle, the fingerprint is likely to be in a wide range when the finger pressure is large at the time of fingerprint imprinting. As shown in FIG. 2A, the fingerprint is easily visible from a wide range. That is, fingerprint resistance is impaired.
In order to exert the fingerprint resistance effect, the contact range should be as small as possible regardless of the pressure applied by the finger.
そこで、本発明では、ダルロールの凹凸を１００％転写せずに数１０％に留め、被圧延鋼板の表面に素材鋼板の平坦部を残存させた。
すなわち、図１（ｂ）に見られるように、素材鋼板表面を残存させて上端が平坦で斜面が鋭角な凸部を、凹凸が深くなるに設けた。このため、図２の（ｂ）に見られるように、指紋押印の加圧力が大きくても指紋のつく範囲は平坦な凸部上面のみで変化せず、耐指紋効果を発揮しやすい。
本発明では、詳細は実施例の記載に譲るが、前記凹凸の算術平均粗さＲａを３.０〜８.５μｍ、平均間隔Ｓｍを１５０〜６００μｍ、未変形のフラット部分（凸部）面積率を２５％〜６０％と規定している。
Therefore, in the present invention, the unevenness of the dull roll is not transferred 100%, but is kept at several tens of percent, and the flat portion of the raw steel plate remains on the surface of the steel plate to be rolled.
That is, as can be seen in FIG. 1B, a convex portion having a flat upper end and an acute slope is provided to leave the raw steel plate surface so that the concave and convex portions become deep. For this reason, as shown in FIG. 2B, even when the pressure applied to the fingerprint is large, the range where the fingerprint is attached does not change only on the upper surface of the flat convex portion, and the fingerprint resistance effect is easily exhibited.
In the present invention, details will be given in the description of Examples, but the arithmetic average roughness Ra of the unevenness is 3.0 to 8.5 μm, the average interval Sm is 150 to 600 μm, and the undeformed flat portion (convex portion) area ratio. Is defined as 25% to 60%.
ところで、表面に凹凸を形成したダルロールを用いて鋼板を軽圧延するとき、圧延荷重を一定とした場合に、ダルロールの凹凸のＲａが小さいと鋼板表面に形成される凸部の面積率は大きくなり、凸部の平均間隔Ｓｍも小さくなる。逆に、ダルロールの凹凸のＲａが大きいと鋼板表面に形成される凸部の面積率は小さくなり、凸部の平均間隔Ｓｍも大きくなる。
ダルロールの凹凸のＲａを基準として圧延し、図４に示すような方法で指紋テストを行い目視評価すると、耐指紋性の観点から見たとき、Ｒａが小さいと凸部面積が大きいため、指紋付着範囲が大きくなりやすい。逆に、Ｒａが大きいと凸面積は小さいがＳｍが大きく凹凸間隔が大きいため、凸側面に指紋が付着しやすく指紋付着範囲が大きくなりやすい。
By the way, when a steel sheet is lightly rolled using a dull roll having irregularities formed on the surface, when the rolling load is constant, if the Ra of the irregularities on the dull roll is small, the area ratio of the convex part formed on the steel sheet surface increases. Further, the average interval Sm between the convex portions is also reduced. On the contrary, if Ra of the unevenness | corrugation of a dull roll is large, the area ratio of the convex part formed in the steel plate surface will become small, and the average space | interval Sm of a convex part will also become large.
Rolling on the basis of Ra of unevenness of the dull roll, and performing a fingerprint test by the method as shown in FIG. 4 and visually evaluating it, from the viewpoint of fingerprint resistance, if Ra is small, the convex area is large, The range tends to grow. On the contrary, when Ra is large, the convex area is small, but Sm is large and the concave / convex interval is large. Therefore, the fingerprint is likely to adhere to the convex side surface, and the fingerprint adhesion range tends to be large.
詳細は後記の実施例の記載に譲るが、前記凹凸の深さＲａが３.０〜８.５μｍ、平均間隔Ｓｍが１５０〜６００μｍ、フラット部分（凸部）面積率が２５％〜６０％であったときに、付着した指紋が目立ち難かった。
より好ましくは、平均間隔Ｓｍを１５０〜５００μｍ、凸部面積率を３０〜６０％とするのがよい。
上記のような指紋や汚れが目立ち難い鋼板は、素材鋼板に、Ｒａが４.０〜９.０μｍの凹凸が形成されたダルロールを用い、被圧延鋼板の板厚が減少しないように、すなわち、ダルロールの凹凸を１００％転写せずに数１０％に留めるように、１パスの軽圧延を施すことによりパスの軽圧延を施すことにより製造される。
素材鋼板は鋼種の違いによりその表面硬さは異なるので、硬さに応じた圧延荷重の付与により所望のＲａ、平均間隔Ｓｍ、未変形のフラット部分（凸部）面積率を有する凹凸面を有するステンレス鋼板を製造することができる。
Details will be given in the description of Examples below, but the depth Ra of the unevenness is 3.0 to 8.5 μm, the average interval Sm is 150 to 600 μm, and the area ratio of the flat part (convex part) is 25% to 60%. At that time, the attached fingerprint was not noticeable.
More preferably, the average interval Sm is 150 to 500 μm and the convex area ratio is 30 to 60%.
The steel plate that is difficult to notice fingerprints and stains as described above uses a dull roll in which unevenness with Ra of 4.0 to 9.0 μm is formed on the raw steel plate so that the thickness of the steel plate to be rolled does not decrease, that is, It is manufactured by performing light rolling of one pass by performing light rolling of one pass so as to keep the unevenness of the dull roll to several tens of percent without transferring 100%.
Since the surface steel has different surface hardness depending on the type of steel, it has an uneven surface having a desired Ra, an average interval Sm, and an undeformed flat portion (convex) area ratio by applying a rolling load according to the hardness. Stainless steel sheets can be manufactured.
得られた鋼板は、所定形状に裁断された後、曲げ加工やプレス加工等の加工が施されて所望形状の部品とされ、車両用部材として用いられる。
なお、後記の実施例ではステンレス鋼を素材として表面に所定の凹凸を形成した事例を紹介しているが、電気亜鉛めっき、Ｚｎ−Ａｌ合金めっき、Ｚｎ−Ａｌ−Ｍｇ合金めっき等のＺｎ系の溶融めっき、電気銅めっき、アルミめっき等のめっきを施した鋼板を素材としたものであっても、さらには、普通鋼や特殊鋼などの裸材であっても、圧延荷重の変更のみで表面に所定の凹凸を形成することができている。
The obtained steel sheet is cut into a predetermined shape, and then subjected to processing such as bending and pressing to obtain a part having a desired shape, and is used as a vehicle member.
In the examples described later, examples in which predetermined irregularities are formed on the surface using stainless steel as a raw material are introduced. However, Zn-based alloys such as electrogalvanizing, Zn-Al alloy plating, and Zn-Al-Mg alloy plating are introduced. Even if the steel plate is plated with hot-dip plating, electrolytic copper plating, aluminum plating, etc., or even bare material such as ordinary steel or special steel, the surface can be changed only by changing the rolling load. Predetermined irregularities can be formed.
実施例１：
直径が１２０ｍｍで幅が１００ｍｍの、表面に放電加工によりＲａが２.５μｍ、４.０μｍ、５.０μｍ、６.０μｍ及び９.０μｍの凹凸を付けたダルロールを用いた。
このダルロールを用い、厚さ１.０ｍｍで、幅が５０ｍｍの、ＳＵＳ３０４及びＳＵＳ４３０の冷延焼鈍鋼板を、０.４〜２.０ｋＮ／ｍｍの範囲の圧延荷重で軽圧延した。なお、圧延油を用いず、送り速度１ｍ／ｍｉｎで圧延した。
得られた建築部材用軽圧延ステンレス鋼板に指紋を付け、図４に示すような手段で指紋の見え方を観察した。
Example 1:
A dull roll having a diameter of 120 mm and a width of 100 mm and having irregularities with Ra of 2.5 μm, 4.0 μm, 5.0 μm, 6.0 μm, and 9.0 μm on the surface by electric discharge machining was used.
Using this dull roll, a cold rolled annealed steel sheet of SUS304 and SUS430 having a thickness of 1.0 mm and a width of 50 mm was lightly rolled at a rolling load in the range of 0.4 to 2.0 kN / mm. In addition, it rolled with the feed rate of 1 m / min, without using rolling oil.
Fingerprints were attached to the obtained lightly rolled stainless steel sheet for building members, and the appearance of the fingerprints was observed by means as shown in FIG.
指紋押印は、電子天秤に得られた軽圧延鋼板を載せ、５００ｇで指を押付けて１０秒間保持することで行った。指紋を押印した軽圧延鋼板について、図４に示す形態で指紋を目視観察し、指紋が目立たなかったものを○、指紋が目立ったものを×として評価した。
そして、○×判定した鋼板それぞれについて、Ｒａ、凸部面積率及びＳｍを測定し、それらの適正範囲を確定させた。なお、Ｒａ及びＳｍは、ＪＩＳ
Ｂ０６０１−２００１に準拠して計測した。また凸部面積率は、オリンパス社製の３次元レーザー顕微鏡（OLS1200）を用い、任意箇所の画像を倍率２００倍で取り込み、「粒子解析」で凸部の面積を測定した。
その結果を表１及び図５〜７に示す。
また、５.０μｍのＲａを付けたダルロールで種々の圧延荷重で圧延したＳＵＳ４３０鋼板表面の凸部の分散状態を図８に示す。図８中、矢印で示す白色部分が凸部である。
なお、ＳＵＳ３０４鋼板とＳＵＳ４３０鋼板の間で差異は認められなかった。
Fingerprint stamping was performed by placing the light rolled steel plate obtained on an electronic balance, pressing the finger with 500 g, and holding for 10 seconds. With respect to the light rolled steel sheet on which the fingerprint was impressed, the fingerprint was visually observed in the form shown in FIG. 4, and the case where the fingerprint was not noticeable was evaluated as ◯, and the case where the fingerprint was conspicuous was evaluated as ×.
And Ra, the convex part area ratio, and Sm were measured about each steel plate determined as Ox, and those appropriate ranges were determined. Ra and Sm are JIS
It measured based on B0601-2001. The convex area ratio was obtained by using an Olympus 3D laser microscope (OLS1200), capturing an image of an arbitrary location at a magnification of 200 times, and measuring the area of the convex portion by “particle analysis”.
The results are shown in Table 1 and FIGS.
Moreover, the dispersion state of the convex part of the surface of the SUS430 steel plate rolled by the various rolling load with the dull roll which attached Ra of 5.0 micrometers is shown in FIG. In FIG. 8, a white portion indicated by an arrow is a convex portion.
In addition, the difference was not recognized between the SUS304 steel plate and the SUS430 steel plate.
実施例２：
直径が１２０ｍｍで幅が１１５０ｍｍの、表面に放電加工によりＲａが４．５μｍの凹凸を付けたダルロールを用いた。
このダルロールを用い、厚さ０．７ｍｍで、幅が９５０ｍｍの、１７Ｃｒ−１．５Ｃｕフェライト系ステンレスの冷延焼鈍鋼帯を、２.１ｋＮ／ｍｍの圧延荷重で軽圧延した。なお、圧延油を用い、送り速度１５０ｍ／ｍｉｎで圧延した。
得られた家電製品用軽圧延ステンレス鋼帯の幅方向におけるワークサイド（ＷＳ）、センター、ドライブサイド（ＤＳ）にて実施例１と同様の手段で指紋を付け、指紋の見え方を目視観察するとともに、鋼板Ｒａ、凸部面積率及びＳｍを測定し、それらの適正範囲を確定させた。
その結果を表２に示す。
Example 2:
A dull roll having a diameter of 120 mm and a width of 1150 mm and having an uneven surface with an Ra of 4.5 μm by electric discharge machining was used.
Using this dull roll, a cold rolled annealed steel strip of 17Cr-1.5Cu ferritic stainless steel having a thickness of 0.7 mm and a width of 950 mm was lightly rolled at a rolling load of 2.1 kN / mm. Note that rolling oil was used and rolled at a feed rate of 150 m / min.
At the work side (WS), center, and drive side (DS) in the width direction of the obtained light rolled stainless steel strip for home appliances, a fingerprint is attached by the same means as in Example 1, and the appearance of the fingerprint is visually observed. At the same time, the steel sheet Ra, the convex area ratio, and Sm were measured and their proper ranges were determined.
The results are shown in Table 2.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012121608A JP5911375B2 (en) | 2012-05-29 | 2012-05-29 | Parts for vehicles using steel plates that are less noticeable for fingerprints and dirt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012121608A JP5911375B2 (en) | 2012-05-29 | 2012-05-29 | Parts for vehicles using steel plates that are less noticeable for fingerprints and dirt |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013244526A true JP2013244526A (en) | 2013-12-09 |
| JP2013244526A5 JP2013244526A5 (en) | 2015-05-14 |
| JP5911375B2 JP5911375B2 (en) | 2016-04-27 |
Family
ID=49844714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012121608A Active JP5911375B2 (en) | 2012-05-29 | 2012-05-29 | Parts for vehicles using steel plates that are less noticeable for fingerprints and dirt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5911375B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017517401A (en) * | 2014-05-12 | 2017-06-29 | アルコニック インコーポレイテッドＡｒｃｏｎｉｃ Ｉｎｃ． | Apparatus and method for rolling metal |
| CN107771106A (en) * | 2015-06-10 | 2018-03-06 | 艾普伦 | Roll stainless steel objects and its manufacture method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012130966A (en) * | 2010-11-29 | 2012-07-12 | Nisshin Steel Co Ltd | Highly corrosion-resistant steel plate on which fingerprint and dirt are hardly conspicuous and method of manufacturing the same |
| WO2012133837A1 (en) * | 2011-03-31 | 2012-10-04 | 日新製鋼株式会社 | Stainless steel sheet and method for manufacturing same |
-
2012
- 2012-05-29 JP JP2012121608A patent/JP5911375B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012130966A (en) * | 2010-11-29 | 2012-07-12 | Nisshin Steel Co Ltd | Highly corrosion-resistant steel plate on which fingerprint and dirt are hardly conspicuous and method of manufacturing the same |
| WO2012133837A1 (en) * | 2011-03-31 | 2012-10-04 | 日新製鋼株式会社 | Stainless steel sheet and method for manufacturing same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017517401A (en) * | 2014-05-12 | 2017-06-29 | アルコニック インコーポレイテッドＡｒｃｏｎｉｃ Ｉｎｃ． | Apparatus and method for rolling metal |
| CN107771106A (en) * | 2015-06-10 | 2018-03-06 | 艾普伦 | Roll stainless steel objects and its manufacture method |
| CN107771106B (en) * | 2015-06-10 | 2019-12-24 | 艾普伦 | Rolled stainless steel article and method of making same |
| US10744553B2 (en) | 2015-06-10 | 2020-08-18 | Aperam | Rolled stainless steel object and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5911375B2 (en) | 2016-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5697098B2 (en) | Highly corrosion-resistant steel plate with less noticeable fingerprints and dirt and method for producing the same | |
| JP2022548266A (en) | Steel plate with deterministic surface structure | |
| JP5911375B2 (en) | Parts for vehicles using steel plates that are less noticeable for fingerprints and dirt | |
| JP5916012B2 (en) | Components for home appliances that use steel plates that are difficult to notice fingerprints and dirt | |
| JPH05117831A (en) | Galvannealed steel sheet having excellent slidability in press die | |
| JP6624220B2 (en) | Roll for cold rolling, method for manufacturing roll for cold rolling, method for temper rolling of surface-treated steel sheet, and surface-treated steel sheet | |
| JP5911374B2 (en) | Architectural materials using steel plates that are difficult to notice fingerprints and dirt | |
| JP3587180B2 (en) | Stainless steel plate with excellent stain resistance and corrosion resistance and its manufacturing method. | |
| JP2718627B2 (en) | Galvanized steel sheet with excellent slidability and paint clarity | |
| JP2000160358A (en) | Hot dip galvanized steel sheet | |
| KR102566779B1 (en) | Galvanized Steel Plate | |
| JP2749629B2 (en) | Alloyed hot-dip galvanized steel sheet with excellent formability and sharpness after painting | |
| JP3979275B2 (en) | Manufacturing method of hot-dip galvanized steel sheet with excellent press formability | |
| JP2004190074A (en) | Galvannealed steel sheet superior in formability | |
| JP4543566B2 (en) | Manufacturing method of hot-dip galvanized steel sheet with excellent press formability | |
| JP3302910B2 (en) | Alloyed hot-dip galvanized steel sheet with excellent workability and sharpness | |
| JP2019155474A (en) | Roll for rolling, surface treatment steel plate, cool rolling steel plate and production method thereof | |
| JP7264324B1 (en) | Galvanized steel sheet | |
| JPH03271356A (en) | Stamping steel plate having metallic coating and manufacture of said steel plate | |
| JP3903835B2 (en) | Manufacturing method of plated steel sheet | |
| WO2023162371A1 (en) | Galvanized steel sheet | |
| US11491528B2 (en) | Hot press-formed item manufacturing method, press-formed item, die, and die set | |
| JP2004130352A (en) | Thin steel sheet for working less prone to cause star mark | |
| JP2004148386A (en) | Aluminum alloy plate having excellent scratch resistance | |
| JPH0691303A (en) | Galvannealed steel sheet excellent in image clarity after coating and press formability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150326 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20150326 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20160304 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20160311 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20160329 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20160329 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5911375 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |