JPH01166890A - Manufacture of clad material - Google Patents
Manufacture of clad materialInfo
- Publication number
- JPH01166890A JPH01166890A JP32519287A JP32519287A JPH01166890A JP H01166890 A JPH01166890 A JP H01166890A JP 32519287 A JP32519287 A JP 32519287A JP 32519287 A JP32519287 A JP 32519287A JP H01166890 A JPH01166890 A JP H01166890A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- layer
- rolling
- joining
- alloy
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 24
- 239000010935 stainless steel Substances 0.000 claims abstract description 22
- 238000005304 joining Methods 0.000 claims abstract description 15
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract 3
- 238000005253 cladding Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明は、オートバイブレーキディスク用などの、ステ
ンレス鋼／ＡＲあるいはへ２合金／ステンレス鋼なる３
層クラッド材を冷間圧延あるいは温間圧延で接合して製
造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention is directed to stainless steel/AR or HE2 alloy/stainless steel 3 for use in motorcycle brake discs, etc.
The present invention relates to a method of manufacturing layered cladding materials by joining them by cold rolling or warm rolling.
［従来の技術］
ステンレス鋼とＡＲによる２層あるいは３層クラッド材
は、主に自動車用外装材、鍋用材料などに広く用いられ
ている。これらは−射的には圧延による接合により製造
され、その後、プレス成形加工されたのち製品となる。[Prior Art] Two-layer or three-layer cladding materials made of stainless steel and AR are widely used mainly as exterior materials for automobiles, materials for pots, and the like. These are manufactured by joining by rolling, and then press-formed to become a product.
これらのクラッド材のステンレス鋼として主に用いられ
るのは、従来、５ＵＳ３０４で代表されるオーステナイ
ト系ステンレス鋼あるいは５Ｏ３４３０で代表されるフ
ェライト系ステンレス鋼で、圧延により接合されたステ
ンレス鋼とＡＲのクラッド材は、ステンレス鋼の再結晶
温度がＡｆｆの融点を遥かに越え、クラッドの状態での
熱処理が困難なために、所定の熱処理を施したステンレ
ス鋼を用いてＡ２とのクラッド材が製造されでいる。Conventionally, the stainless steels mainly used for these cladding materials are austenitic stainless steel represented by 5US304 or ferritic stainless steel represented by 5O3430, and stainless steel and AR cladding material joined by rolling are used. Since the recrystallization temperature of stainless steel far exceeds the melting point of Aff and it is difficult to heat treat it in the clad state, the clad material with A2 cannot be manufactured using stainless steel that has been subjected to a specified heat treatment. .
これらプレス成形を受ける以外の用途、例えばオートバ
イブレーキディスクにステンレス鋼とＡＩ２の３層クラ
ッド材を用いれば、軽量化、熱伝導性および、巨匠性の
向上といった点で極めて高い有効性が期待される。If the three-layer cladding material of stainless steel and AI2 is used for applications other than press forming, such as motorcycle brake discs, it is expected to be extremely effective in terms of weight reduction, thermal conductivity, and improved virtuosity. .
しかし、ブレーキディスクはロックウェル硬度（ＨＲｅ
）で３５±５の比較的狭い範囲の硬度が要求されるため
、上述の冷間圧延による加工硬化のみで所定の硬度を得
ることは難しく、またディスクに打ち抜いた際にステン
レス鋼とＡｌ１が剥離し易いために実用化されていなか
った。However, brake discs have Rockwell hardness (HRe)
) is required to have a hardness in a relatively narrow range of 35 ± 5, so it is difficult to obtain the specified hardness only by work hardening by cold rolling, and when punching into a disk, the stainless steel and Al1 peel off. It was not put into practical use because it was easy to do.
［発明が解決しようとする問題点１
本発明は、前記クラッド材の問題点を解決し、例えば、
オートバイブレーキディスクに打ち抜く場合にも剥離を
生ずることのない、外層がステンレス鋼、内層がＡｌ１
あるいはへ２合金である３層クラッド材の製造方法を提
供しようとするものである。[Problem to be Solved by the Invention 1] The present invention solves the problems of the cladding material, for example,
The outer layer is stainless steel and the inner layer is Al1, which will not peel off when punched into motorcycle brake discs.
Alternatively, the present invention aims to provide a method for manufacturing a three-layer cladding material that is a He2 alloy.
Ｅ問題点を解決するための手段１
本発明は前記問題点を解決するために、外層がステンレ
ス鋼、内層がＡβあるいはＡＩ２合金である３層クラッ
ド材の製造方法において、オートバイブレーキディスク
などに使用し得る特性を有するステンレス鋼を外層とし
て用い、この鋼が内層との十分な接合強度を発揮するよ
うな接合面の粗度、および圧延接合温度を特定したもの
である。Means for Solving Problem E 1 In order to solve the above problem, the present invention provides a method for manufacturing a three-layer clad material in which the outer layer is stainless steel and the inner layer is Aβ or AI2 alloy, which is used for motorcycle brake discs, etc. This method uses stainless steel as the outer layer, and specifies the roughness of the bonding surface and rolling bonding temperature at which this steel exhibits sufficient bonding strength with the inner layer.
［作用１
本発明をオートバイブレーキディスク用クラッド材の製
造方法を例として説明する。[Operation 1] The present invention will be explained by taking a method of manufacturing a cladding material for a motorcycle brake disc as an example.
上記用途においては、外層は十分な耐摩耗性、靭性およ
び耐食性が要求され、一般に硬度が高くなるに従って、
耐摩耗性は良好となるが靭性は逆に低下し、ＨＲ０３０
未満では耐摩耗性が不十分であり、ＨＲｃ４０を越える
とブレーキパッドの摩耗が太き（なるので、ＨＲＣ３５
±５のマルテンサイト系ステンレス鋼材が使用される。In the above applications, the outer layer is required to have sufficient wear resistance, toughness, and corrosion resistance, and generally, as the hardness increases,
Although the wear resistance is good, the toughness is decreased, and HR030
If it is less than HRc40, the wear resistance is insufficient, and if it exceeds HRc40, the wear of the brake pad will become thicker (so HRC35
±5 martensitic stainless steel material is used.
Ｃｒの含有量は、１０重量％（重量％を以下単に％記す
）未満では十分な耐食性が得られず、１４％を越えると
焼入れする際に高温でのオーステナイト相領域が縮小し
、焼入れの生産性を妨げるので１０〜１４％とした。If the Cr content is less than 10% by weight (weight% is simply expressed as %), sufficient corrosion resistance cannot be obtained, and if it exceeds 14%, the austenite phase region at high temperatures during quenching will shrink, resulting in a reduction in quenching production. Since it hinders the performance, it is set at 10 to 14%.
次にＣ＋Ｎの含有量は、焼入れにより生じるマルテンサ
イト相の硬さを決定するが、Ｃ＋Ｎの含有量を０．０４
〜０．１０％とすることにより、焼入れするだけで焼戻
しすることなく、安定してＨＲＣ３５±５が得られるの
で、Ｃ＋Ｎの含有量を０．０４〜０１０％とした。なお
、Ｍｎを１．０〜２．５％、Ｎｉを０．５％以下とする
ことが、焼入温度および鋼板製造工程の管理が容易にな
るので望ましい。Next, the C+N content determines the hardness of the martensitic phase produced by quenching, but the C+N content is 0.04
By setting the C+N content to 0.10%, an HRC of 35±5 can be stably obtained just by quenching without tempering, so the C+N content was set to 0.04 to 010%. Note that it is desirable that Mn be 1.0 to 2.5% and Ni be 0.5% or less because this makes it easier to control the quenching temperature and the steel sheet manufacturing process.
本発明者らは前記マルテンサイト系ステンレス鋼板とＡ
ｌ１あるいはＡＩ２合金との圧延による接合条件につい
て詳細に検討した結果、接合前のステンレス鋼板のＡｌ
１あるいはへ２合金との接合面の粗度が、接合強度に大
きな影響を与えることを見出した。The present inventors used the martensitic stainless steel sheet and A
As a result of a detailed study of the joining conditions by rolling with l1 or AI2 alloy, we found that the aluminum of the stainless steel sheet before joining
It has been found that the roughness of the joint surface with 1 or 2 alloy has a large effect on the joint strength.
すなわち、接合前の粗度Ｒａ（中心線平均粗さ）が０．
５μｍ以下では接合後に十分な接合強度が得られず、剪
断したのちの剥離を生じ易い。−方、粗度が大きくなる
ことによって接合強度が上昇するが、Ｒａが２０μｍを
越えるとその効果は飽和するので２０μｍ以下が好まし
い。よってステンレス鋼板の表面粗度をＲａ ０．５μ
ｍ以上に限定した。That is, the roughness Ra (center line average roughness) before bonding is 0.
If the thickness is less than 5 μm, sufficient bonding strength cannot be obtained after bonding, and peeling after shearing is likely to occur. - On the other hand, as the roughness increases, the bonding strength increases, but if Ra exceeds 20 μm, the effect is saturated, so it is preferably 20 μm or less. Therefore, the surface roughness of the stainless steel plate is Ra 0.5μ
m or more.
接合後のマルテンサイト系ステンレス鋼とＡｌ１とのク
ラッド材は、剪断により所定の寸法に切断され製品とし
て使用されるが、その際にステンレス鋼とＡ２が剥離す
ると、製品として使用中に剥離の進展および剥離した隙
間での腐食といった問題を生じる。この剥離のし易さと
接合強度の関係を調査したところ、接合強度が１．ｏｋ
ｇ／ｍｒｎ’未満では剥離が生じ易いのに対し、１．０
ｋｇ／ｍｒｎ”以上では剥離を生じないことを見出した
。After joining, the cladding material of martensitic stainless steel and Al1 is cut into predetermined dimensions by shearing and used as a product, but if the stainless steel and A2 separate at that time, the separation will progress during use as a product. This also causes problems such as corrosion in the gaps where the flaking occurs. When we investigated the relationship between the ease of peeling and the bonding strength, we found that the bonding strength was 1. OK
If less than 1.0 g/mrn', peeling tends to occur.
It has been found that peeling does not occur at a pressure of more than "kg/mrn".
そこで圧延による接合な圧下率と圧延温度に着目し、接
合強度が１．０ｋｇ／ｍｒｒ１′以上となる圧延条件を
、圧延前のマルテンサイト系ステンレス鋼板のＡｌ１と
接合することになる表面をＲａ１．０〜１５μｍとし、
板厚はマルテンサイト系ステンレス鋼板が１．０ｍｍ、
Ａｌ１が７ｍｍとして調査し、圧延温度と圧下率との関
係を第１図に示した。図示された曲線より高圧下率側が
使用可能の圧下率で、圧延温度を上界させることにより
、より低い圧下率で十分な接合強度を得ることができる
。Therefore, we focused on the rolling reduction rate and rolling temperature for joining by rolling, and set the rolling conditions such that the joining strength was 1.0 kg/mrr1' or more, and set the surface to be joined to Al1 of the martensitic stainless steel sheet before rolling to Ra1. 0 to 15 μm,
The thickness of the martensitic stainless steel plate is 1.0 mm.
The investigation was conducted assuming that Al1 was 7 mm, and the relationship between rolling temperature and rolling reduction ratio is shown in FIG. By setting the upper limit of the rolling temperature at a usable rolling reduction on the higher rolling reduction side of the illustrated curve, sufficient bonding strength can be obtained at a lower rolling reduction.
圧延温度が６００℃を越えると、接合部にＦｅ−、’８
２の金属間化合物が生成し易く、接合強度が低下するの
で、圧延接合温度の上限を６００°Ｃとした。When the rolling temperature exceeds 600℃, Fe-, '8
Since the intermetallic compound No. 2 is likely to be formed and the bonding strength is reduced, the upper limit of the rolling bonding temperature was set to 600°C.
さらに高い接合強度を得るには接合後３００〜６００℃
で数分程度の拡散焼鈍を施すことが好ましい。To obtain even higher bonding strength, heat at 300 to 600℃ after bonding.
It is preferable to perform diffusion annealing for several minutes.
［実施例］
第１表に示す化学組成の冷延鋼板を９５０℃から焼入る
ことによりＨＲＣ３５の硬度とした。これをベルト式の
研磨紙で片面を研磨し、温間および冷間圧延で純／ｌあ
るいはＡＱ−Ｍｇ合金（３，０％Ｍｇ）との、外層がス
テンレス鋼となる３層クラッド材を製造した。製造条件
と接合強度を第２表に示す。[Example] A cold-rolled steel plate having a chemical composition shown in Table 1 was hardened from 950°C to have a hardness of HRC35. One side of this is polished with belt-type abrasive paper, and warm and cold rolled to produce a three-layer cladding material with pure/l or AQ-Mg alloy (3.0% Mg), with the outer layer being stainless steel. did. The manufacturing conditions and bonding strength are shown in Table 2.
本発明により、接合強度に優れたマルチサイト系ステン
レス鋼とＡｌ１あるいはＡＩ２合金との３層クラッド材
を製造することができる。According to the present invention, it is possible to manufacture a three-layer cladding material of multisite stainless steel and Al1 or AI2 alloy that has excellent bonding strength.
〔発明の効果Ｊ
本発明により、外層がステンレス鋼、内層がＡｒ１また
はへβ合金である３層クラッド材の、外層と内層との剥
離を防止することができ、例えばオートバイブレーキデ
ィスクの軽量化、熱伝導性の向上および意匠性の向上を
達成することができた。[Effect of the Invention J] According to the present invention, it is possible to prevent separation between the outer layer and the inner layer of a three-layer clad material in which the outer layer is stainless steel and the inner layer is Ar1 or Heβ alloy. It was possible to achieve improvements in thermal conductivity and design.
第１図は圧延接合における圧延温度と圧下率との関係を
示すグラフである。FIG. 1 is a graph showing the relationship between rolling temperature and rolling reduction in rolling joining.
Claims (1)
である３層クラッド材を圧延接合により製造する方法に
おいて、Ｃ＋Ｎとして ０．０４〜０．１０重量％とＣｒを１０〜１４重量％と
を含有するマルテンサイト系ステンレス鋼材を、該内層
との接合面の粗度を０．５μｍ以上とし、６００℃以下
の温度で該内層と圧延接合することを特徴とするクラッ
ド材の製造方法。[Claims] 1. A method for producing a three-layer clad material in which the outer layer is made of stainless steel and the inner layer is made of Al or Al alloy by rolling joining, in which 0.04 to 0.10% by weight of C+N and 10 to 14% by weight of Cr are added. production of a cladding material, characterized in that a martensitic stainless steel material containing % by weight is rolled and joined to the inner layer at a temperature of 600 ° C. or less, with a roughness of the joint surface with the inner layer of 0.5 μm or more. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32519287A JPH01166890A (en) | 1987-12-24 | 1987-12-24 | Manufacture of clad material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32519287A JPH01166890A (en) | 1987-12-24 | 1987-12-24 | Manufacture of clad material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01166890A true JPH01166890A (en) | 1989-06-30 |
Family
ID=18174041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32519287A Pending JPH01166890A (en) | 1987-12-24 | 1987-12-24 | Manufacture of clad material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01166890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100431842B1 (en) * | 1999-12-10 | 2004-05-20 | 주식회사 포스코 | A method for manufacturing high strength martensitic stainless clad steel plate with superior heat transfer property |
| JP2005021899A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Metal Ind Ltd | Metal clad plate and its producing method |
-
1987
- 1987-12-24 JP JP32519287A patent/JPH01166890A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100431842B1 (en) * | 1999-12-10 | 2004-05-20 | 주식회사 포스코 | A method for manufacturing high strength martensitic stainless clad steel plate with superior heat transfer property |
| JP2005021899A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Metal Ind Ltd | Metal clad plate and its producing method |
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