JPH09143552A - Method for forging precipitation hardening type stainless steel - Google Patents
Method for forging precipitation hardening type stainless steelInfo
- Publication number
- JPH09143552A JPH09143552A JP33277995A JP33277995A JPH09143552A JP H09143552 A JPH09143552 A JP H09143552A JP 33277995 A JP33277995 A JP 33277995A JP 33277995 A JP33277995 A JP 33277995A JP H09143552 A JPH09143552 A JP H09143552A
- Authority
- JP
- Japan
- Prior art keywords
- forging
- slag
- stainless steel
- precipitation hardening
- polishing
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
- Forging (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は析出硬化型ステン
レス鋼の鍛造加工方法に関し、詳しくは加工中に金型と
の焼付きを防止し、パーツフォーマ等による連続生産を
低コストで行い得る鍛造加工方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forging precipitation hardening type stainless steel, and more specifically, forging which prevents seizure with a die during processing and enables continuous production by a parts former at a low cost Regarding the method.
【0002】[0002]
【従来の技術及び発明が解決しようとする課題】析出硬
化型ステンレス鋼は難加工材として知られており、そこ
でこれを一旦オーステナイト温度領域まで加熱した上、
温間領域まで冷却し、その温間領域で加工した後にマル
テンサイト状態まで冷却してその後に時効処理を施すと
いった加工方法が提案されている(特願平3−6897
4,特願平4−189861)。2. Description of the Related Art Precipitation hardening type stainless steel is known as a difficult-to-work material, and once it is heated to the austenite temperature range,
A processing method has been proposed in which the material is cooled to a warm area, processed in the warm area, cooled to a martensite state, and then subjected to an aging treatment (Japanese Patent Application No. 3-6897).
4, Japanese Patent Application No. 4-189861).
【0003】このようにした場合、材料が軟らかい状態
で且つ高寸法精度で加工を行うことができ、またその後
の時効処理によって所要の強度を発現させることができ
る。In this case, the material can be processed in a soft state with high dimensional accuracy, and the required strength can be exhibited by the subsequent aging treatment.
【0004】ところで、従来析出硬化型ステンレス鋼の
鍛造加工に際しては、材料に加工時の潤滑のために被膜
形成を行い、また併せて油潤滑を行っているが、従来そ
れらの被膜,潤滑油が加工中に十分保持されず、加工中
に剥がれたり消失したりして金型との間で焼付きを生
じ、鍛造時の歩留り低下,製品コストの上昇をもたらし
ていた。By the way, in the conventional forging process of precipitation hardening stainless steel, a film is formed on the material for lubrication at the time of processing, and oil lubrication is also performed. It was not sufficiently retained during processing and peeled off or disappeared during processing to cause seizure with the die, resulting in a decrease in yield during forging and an increase in product cost.
【0005】[0005]
【課題を解決するための手段】本願の発明はこのような
課題を解決するためになされたものである。而して本願
の発明は、析出硬化型ステンレス鋼のコイル若しくはバ
ー材を所定長さごとに切断してスラグを得た後、該スラ
グに対して研磨処理による該切断端面を含む表面肌荒ら
し処理を施して該表面を凹凸形状化し、該表面肌荒らし
処理に先立って若しくはその後に室温にて該スラグの切
断端面矯正加工を行い、該凹凸形状化したスラグに対し
て油潤滑の下で所定の鍛造加工を行うことを特徴とする
(請求項1)。The invention of the present application has been made to solve such a problem. Thus, the invention of the present application is to obtain a slag by cutting a coil or a bar material of precipitation hardening stainless steel at a predetermined length, and then, for the slag, a surface roughening treatment including the cut end surface by polishing treatment. Is applied to make the surface uneven, and before or after the surface roughening treatment, the cutting end surface of the slag is subjected to straightening processing, and the slag having the uneven shape is subjected to predetermined lubrication under oil lubrication. Forging is performed (Claim 1).
【0006】請求項2の加工方法は、請求項1におい
て、前記鍛造加工に先立って前記表面凹凸形状化したス
ラグを予めオーステナイト温度領域まで加熱した後70
0℃〜Ms点までの温度範囲内に冷却し、該温度範囲内
で前記鍛造加工を施した後、マルテンサイト域まで冷却
し、その後時効処理することを特徴とする。According to a second aspect of the present invention, in the first aspect of the present invention, the slag having the surface-roughened shape is heated to austenite temperature region in advance before the forging process.
It is characterized in that it is cooled within a temperature range from 0 ° C. to Ms, subjected to the forging process within the temperature range, cooled to a martensite region, and then subjected to an aging treatment.
【0007】請求項3の加工方法は、請求項1又は2に
おいて、前記表面肌荒らしのための研磨処理として研磨
石を用いたバレル研磨を行うことを特徴とする。According to a third aspect of the present invention, in the first or second aspect of the present invention, barrel polishing using a polishing stone is performed as the polishing treatment for roughening the surface.
【0008】請求項4の加工方法は、請求項1,2,3
の何れかにおいて、前記鍛造加工を、前記スラグに対し
て被膜形成処理することなく油潤滑のままで行うことを
特徴とする。The processing method of claim 4 is the processing method of claims 1, 2, 3
In any one of the above, the forging process is performed with oil lubrication as it is without performing a film forming process on the slag.
【0009】請求項5の加工方法は、請求項1,2,3
の何れかにおいて、前記鍛造加工に際し、被膜形成した
上、油潤滑の下で鍛造加工を行うことを特徴とする。The processing method according to claim 5 is the processing method according to claims 1, 2, and 3.
In any one of the above, the forging process is characterized in that a film is formed and the forging process is performed under oil lubrication.
【0010】請求項6の加工方法は、請求項5におい
て、前記被膜形成に際して、該被膜として黒鉛単体若し
くは二硫化モリブデン単体又は硫酸カリを主成分とする
無機塩の下地被膜及び二硫化モリブデン被膜の組合せか
ら成る二層被膜を形成することを特徴とする。According to a sixth aspect of the present invention, there is provided the processing method according to the fifth aspect, wherein, when forming the coating film, the coating film includes a graphite simple substance, a molybdenum disulfide simple substance, an undercoat of an inorganic salt containing potassium sulfate as a main component, and a molybdenum disulfide coating. It is characterized in that a two-layer coating composed of a combination is formed.
【0011】[0011]
【作用及び発明の効果】上記のように請求項1の発明
は、析出硬化型ステンレス鋼のコイル若しくはバー材を
切断してスラグを得た後に、これを表面肌荒らし処理し
て切断面端面を含む表面を凹凸形状化し、その後におい
て油潤滑の下で所定の鍛造加工を行うもので、本発明に
よれば、スラグ表面の凹凸形状によってこれに潤滑油を
施したときに、潤滑油がスラグ表面に良好に保持され、
鍛造加工中に潤滑油が消失するのが防止される。As described above, according to the first aspect of the invention, after the precipitation hardening stainless steel coil or bar material is cut to obtain slag, the slag is roughened and the end surface of the cut surface is treated. The surface including the surface is made uneven, and then a predetermined forging process is performed under oil lubrication. According to the present invention, when the lubricating oil is applied to the slag surface due to the uneven shape, the lubricating oil is slag surface. Held well,
The lubricant is prevented from disappearing during the forging process.
【0012】このため、本発明によれば難加工材である
析出硬化型ステンレス鋼にあっても、鍛造加工に際して
敢えて二硫化モリブデン等の被膜形成を行わなくても、
油潤滑のみで良好に鍛造加工を行い得ることを確認し得
た。Therefore, according to the present invention, even in the case of precipitation hardenable stainless steel which is a difficult-to-machine material, it is possible to form a coating film of molybdenum disulfide or the like during the forging process.
It was confirmed that good forging can be performed only with oil lubrication.
【0013】而してこのような被膜形成することなく油
潤滑のみで加工を行うことができれば、被膜形成のため
のコストを削減することができ、製品コストを低減する
ことができる(請求項4)。If the processing can be performed only by oil lubrication without forming such a film, the cost for forming the film can be reduced and the product cost can be reduced. ).
【0014】また本発明は、研磨処理時に或いはこれに
先立つスラグの端面矯正加工により、切断時に生じたバ
リやエッジ除去を行い、その上で所定の鍛造加工を行う
ため、鍛造加工中にバリやエッジによる金型の焼付きを
防止できる。Further, according to the present invention, burrs and edges generated during cutting are removed by polishing the slag end face during the polishing process or prior to the polishing process, and a predetermined forging process is performed on the burrs. It is possible to prevent the seizure of the mold due to the edge.
【0015】本発明においては、鍛造加工に先立って凹
凸形状化したスラグを予めオーステナイト温度領域まで
加熱した後700℃〜Ms点までの温度範囲内に冷却
し、その温度範囲内で加工を施すのが望ましい。In the present invention, prior to forging, the uneven slag is heated in advance to the austenite temperature range, then cooled within the temperature range from 700 ° C. to the Ms point, and processed within the temperature range. Is desirable.
【0016】このようにすれば、スラグを軟らかいオー
ステナイト状態で加工でき、油潤滑のみでもパーツフォ
ーマ等の連続鍛造成形機によってボルト等の製品を高能
率生産することが可能である(請求項2)。而して鍛造
加工後これをマルテンサイト状態まで冷却した後、所定
の時効処理を施すことで所要の強度を付与することがで
きる。By doing so, it is possible to process the slag in a soft austenitic state, and it is possible to produce products such as bolts with high efficiency by a continuous forging machine such as a part former only with oil lubrication (claim 2). . After the forging process, this is cooled to a martensite state and then subjected to a predetermined aging treatment to give a required strength.
【0017】本発明においては、スラグの表面肌荒らし
のための研磨処理として、研磨石を用いたバレル研磨を
行うのが望ましく、これによりスラグの切断端面を含む
表面を良好に凹凸形状化でき、潤滑油の保持能力を高め
ることができる(請求項3)。In the present invention, it is desirable to perform barrel polishing using a polishing stone as a polishing treatment for roughening the surface of the slag, whereby the surface including the cut end face of the slag can be satisfactorily made into an uneven shape, The ability to retain the lubricating oil can be increased (claim 3).
【0018】本発明においては、また、凹凸形状化した
スラグ表面に被膜形成した上、油潤滑の下で所定の鍛造
加工を行うことも勿論可能である。この場合、被膜よる
作用によって鍛造加工時に金型との摩擦抵抗力を更に低
減でき、金型寿命を大幅に延ばすことができる(請求項
5)。In the present invention, it is of course possible to form a film on the surface of the slag having an uneven shape and then perform a predetermined forging process under oil lubrication. In this case, the action of the coating can further reduce the frictional resistance with the die during the forging process, and can prolong the life of the die significantly (claim 5).
【0019】またスラグ表面における被膜の保持能力が
高くなるために、鍛造加工中に被膜が剥がれ消失するの
が防止される。尚、被膜としては黒鉛単体若しくは二硫
化モリブデン単体又は硫酸カリを主成分とする無機塩の
下地膜及び二硫化モリブデン被膜の組合せから成る二層
被膜とするのが良い(請求項6)。Further, since the ability of holding the coating on the surface of the slag is increased, the coating is prevented from peeling off during the forging process. The coating is preferably a two-layer coating composed of graphite alone, molybdenum disulfide alone, or a combination of an underlying film of an inorganic salt containing potassium sulfate as a main component and a molybdenum disulfide coating (claim 6).
【0020】[0020]
【発明の実施の形態】本発明においては、析出硬化型ス
テンレス鋼のコイル若しくはバー材を剪断機等にて所定
長さごとに切断してスラグを得る。そしてその後にスラ
グに対して研磨による表面肌荒らし処理を行う。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a precipitation hardening stainless steel coil or bar material is cut into predetermined lengths by a shearing machine or the like to obtain a slag. Then, the slag is subjected to surface roughening treatment by polishing.
【0021】通常は表面肌荒らし処理に先立って、先ず
室温にてスラグの切断端面の矯正工程を行う。そしてそ
の矯正工程において両端面のゆがみや切断によるバリ及
びコーナーエッジを塑性加工的に丸くすることができ
る。尚、この矯正工程はパーツフォーマ内において連続
的に行うことができる。但しこの塑性加工を受けた面は
凹凸に乏しく、その後の鍛造加工を連続して加えること
が困難である。Usually, prior to the surface roughening treatment, first, a step of correcting the cut end surface of the slag is performed at room temperature. In the straightening step, the burrs and the corner edges due to the distortion and cutting of both end faces can be plastically rounded. It should be noted that this straightening step can be continuously performed in the part former. However, the surface that has undergone this plastic working has little unevenness, and it is difficult to apply subsequent forging processing continuously.
【0022】そこで次に表面肌荒らし処理、望ましくは
アルミナ等の研磨石を用いたバレル研磨を実施して、ス
ラグの端面を含む表面を凹凸形状化する。このときの凹
凸形状化の程度としては、表面粗さ(平均値Ra)で
1.5〜5.0μmとなる程度が良い。Therefore, next, surface roughening treatment, preferably barrel polishing using a polishing stone such as alumina, is performed to make the surface including the end face of the slag uneven. At this time, the degree of unevenness is preferably such that the surface roughness (average value Ra) is 1.5 to 5.0 μm.
【0023】このようにしてスラグの表面を凹凸形状化
したところで、次にスラグに対して油潤滑の下で所定の
鍛造加工を施す。このとき、スラグには表面に所定の凹
凸が付与されているため、施された潤滑油が十分にスラ
グ表面に保持され、かかる油潤滑の潤滑作用の下で円滑
に鍛造加工を行うことができる。従って例えば前方押出
しを主とする製品の鍛造加工に際しては、油潤滑のみで
も十分に鍛造加工することができる。When the surface of the slag is made uneven in this way, the slag is then subjected to predetermined forging under oil lubrication. At this time, since the surface of the slag is provided with predetermined irregularities, the applied lubricating oil is sufficiently retained on the surface of the slag, and forging can be smoothly performed under the lubricating action of such oil lubrication. . Therefore, for example, in the forging process of a product mainly for the forward extrusion, only the oil lubrication can be used for the forging process.
【0024】また一方、後方押出し等の強加工を含む鍛
造加工に際しては、スラグ表面に被膜形成した上で油潤
滑の下に鍛造加工するようになすのが良い。この場合に
おいてもスラグ表面の凹凸によって被膜,潤滑油の保持
能力が高く、金型に焼付きを生ぜしめることなく円滑に
加工を行うことができ、金型の寿命を従来に比べて大幅
に延ばすことができる。On the other hand, at the time of forging including strong processing such as backward extrusion, it is preferable to form a film on the slag surface and then forge under oil lubrication. Even in this case, the unevenness of the surface of the slag has a high ability to retain the coating and the lubricating oil, which enables smooth processing without causing seizure in the die, and significantly extends the life of the die compared to the conventional method. be able to.
【0025】尚、上記何れの場合においても表面凹凸化
したスラグを一旦オーステナイト温度領域まで加熱した
上で、これを700℃〜Ms点までの温度範囲内に冷却
し、その温度範囲内で上記鍛造加工を施すのが良い。そ
してその鍛造加工後においてマルテンサイト状態まで冷
却し、その後常法に従って時効処理を施し、所要の強度
を発現させる。In any of the above cases, the surface-roughened slag is once heated to the austenite temperature region and then cooled within the temperature range from 700 ° C. to the Ms point, and the forging is performed within the temperature range. It is better to process it. Then, after the forging process, it is cooled to a martensite state and then subjected to an aging treatment according to a conventional method to develop a required strength.
【0026】尚、上記被膜としては用途に応じて黒鉛若
しくは二硫化モリブデンを単独で形成することができ
る。その方法としては例えば黒鉛若しくは二硫化モリブ
デンの溶液中にスラグを浸漬することによって表面に被
膜形成する方法を採用することができる。As the above coating, graphite or molybdenum disulfide can be formed alone depending on the application. As the method, for example, a method of forming a film on the surface by immersing the slag in a solution of graphite or molybdenum disulfide can be adopted.
【0027】一方、更に高強度の加工を行う場合には、
硫酸カリを主成分とする無機塩の下地被膜と二硫化モリ
ブデンの被膜の組合せから成る被膜を用いることができ
る。その被膜の形成方法としては、無機塩が溶解してい
る処理槽内にスラグをバッチ的に所定時間、例えば10
分間程度浸漬処理し、しかる後乾燥処理した上で二硫化
モリブデン粉末と研磨石とともにバレル装置へ装入し、
バレル処理することにより研磨石を使用してバレル装置
で処理することによって被膜形成することができる。On the other hand, when performing processing with higher strength,
A coating composed of a combination of an undercoat of an inorganic salt containing potassium sulfate as a main component and a coating of molybdenum disulfide can be used. As a method of forming the film, the slag is batchwise placed in a treatment tank in which an inorganic salt is dissolved for a predetermined time, for example, 10 times.
Immerse for about a minute, then dry and then load into a barrel device with molybdenum disulfide powder and polishing stones,
A barrel can be used to form a film by treating with a barrel machine using a polishing stone.
【0028】[0028]
【実施例】次に本発明の実施例を以下に詳述する。表1
に示す成分のSUS630のコイル(直径8mmと10
mm)を冷間伸線した。伸線に際しては蓚酸塩被膜の処
理を行った。次にこのコイルを切断してスラグを得た
後、パーツフォーマ内で図1又は図2に示す工程に従っ
て、潤滑油を施した状態で室温にて端面矯正(両端面の
平行度出し)及びコーナーの面取り(通常圧造Rと称し
0.2〜0.4R)を行った。Next, embodiments of the present invention will be described in detail. Table 1
SUS630 coil (diameter 8 mm and 10
mm) was drawn by cold drawing. The oxalate film was treated during wire drawing. Next, after cutting this coil to obtain slag, according to the process shown in Fig. 1 or 2 in the parts former, end face correction (parallelism of both end faces) and corner at room temperature with lubricating oil applied. Chamfering (usually referred to as heading R and 0.2 to 0.4R) was performed.
【0029】[0029]
【表1】 [Table 1]
【0030】尚、図1はフランジボルト用のスラグの加
工工程を、また図2はM8キャップボルト用のスラグの
加工工程を示している。このような矯正,面取工程を入
れないと、後に続く鍛造加工工程で早期に焼付きが発生
する。このように作られたスラグは両端面の平行度が確
保され、また表面粗さが表2に示すごとき表面粗さに変
化した。FIG. 1 shows a slag working process for a flange bolt, and FIG. 2 shows a slag working process for an M8 cap bolt. If such correction and chamfering steps are not performed, seizure will occur early in the subsequent forging step. The parallelism of both end faces was secured in the slag thus produced, and the surface roughness was changed to the surface roughness as shown in Table 2.
【0031】[0031]
【表2】 [Table 2]
【0032】次に、研磨石としての15×15×10m
mの三角形タイプのアルミナと面粗度を制御するための
コンパウンド(例えばリン酸ナトリウム)とを用いてス
ラグをバッチ的にバレル研磨し、表面を凹凸形状化し
た。そのときの表面の粗さの変化を表2に示した。Next, 15 × 15 × 10 m as a polishing stone
The slag was barrel-polished in batches using a triangular type alumina of m and a compound (for example, sodium phosphate) for controlling the surface roughness to make the surface uneven. Table 2 shows the changes in the surface roughness at that time.
【0033】次に上記表面肌荒らし処理したスラグに対
して、表3に従って各種の被膜処理を施し、鍛造加工に
供した。尚、表3中A,B,C,Dはバレル研磨による
表面肌荒らし処理をしない場合、E,F,G,Hはバレ
ル研磨による表面肌荒らし処理を行った場合である。Next, the slag subjected to the surface roughening treatment was subjected to various coating treatments according to Table 3 and subjected to forging. In Table 3, A, B, C, and D are the cases where the surface roughening treatment by barrel polishing was not performed, and E, F, G, and H were the cases where the surface roughening treatment by barrel polishing was performed.
【0034】[0034]
【表3】 [Table 3]
【0035】ここでAとEについては被膜形成すること
なく油潤滑のみで鍛造加工を行った。また表中黒鉛被
膜,二硫化モリブデン被膜の場合、それぞれ50℃の湯
に黒鉛又は二硫化モリブデンの粉末を溶かした溶液にス
ラグを浸漬することにより被膜形成を行い、また無機塩
被膜の場合には、硫酸カリを主成分とする無機塩の溶液
を80℃に加熱してそこにスラグを10分間浸漬処理
し、その後乾燥した上で二硫化モリブデンのスプレー塗
布、或いは二硫化モリブデン粉末と研磨石とともにバレ
ル装置へ装入し、バレル処理することにより最終的に無
機塩の下地被膜及び二硫化モリブデンの被膜の二層被膜
を形成した。Here, A and E were forged only by oil lubrication without forming a film. In the case of the graphite coating and molybdenum disulfide coating in the table, the coating is formed by immersing the slag in a solution of graphite or molybdenum disulfide powder dissolved in 50 ° C hot water. , A solution of an inorganic salt containing potassium sulfate as the main component is heated to 80 ° C., the slag is immersed in the solution for 10 minutes, and then dried and then spray coated with molybdenum disulfide, or with molybdenum disulfide powder and a polishing stone. It was charged into a barrel apparatus and barrel-treated to finally form a two-layer coating of an inorganic salt base coating and a molybdenum disulfide coating.
【0036】この場合、当然表面肌荒らしのために行っ
たバレル研磨の状態に依存して被膜の付着強度が異なる
こととなる。尚、ショットブラストによる方法は、肌荒
らしの程度が劣るとともにバリの除去が完全にできない
ため断念した。In this case, naturally, the adhesion strength of the coating differs depending on the state of barrel polishing performed for surface roughening. The method using shot blast was abandoned because the degree of skin roughening was poor and burr could not be completely removed.
【0037】またスラグ成形したものをそのまま加工し
た場合、エッジ及び端面に被膜がなく且つ油の保持能力
に劣るため、数百個にてダイスと早期に焼付きを起こし
た。When the slag-molded product was processed as it was, there were no coatings on the edges and end faces and the oil retaining ability was inferior.
【0038】次に、図3及び図4に示す工程に従い、量
産ラインにおける被膜の効果を確認すべく、フランジボ
ルト及びM8キャップボルトの鍛造加工を実施し、各工
程における金型寿命を調べた。その結果が表4に示して
ある。Next, according to the steps shown in FIGS. 3 and 4, in order to confirm the effect of the coating film in the mass production line, forging of the flange bolt and the M8 cap bolt was carried out, and the die life in each step was examined. The results are shown in Table 4.
【0039】[0039]
【表4】 [Table 4]
【0040】表4の結果から明らかなように、スラグに
バレル研磨を施した上で鍛造加工に供した場合、潤滑油
又は被膜の保持能力が向上し、金型との焼付寿命が大幅
に向上する効果が認められる。特に被膜形成せず油潤滑
だけで鍛造加工を行った場合、バレル研磨を施すことに
より、金型寿命が例えばフランジボルトの場合5倍程
度、M8キャップボルトの場合10倍以上延びているこ
とが分かる。As is clear from the results shown in Table 4, when the slag is barrel-polished and then subjected to forging, the holding ability of the lubricating oil or the coating is improved, and the baking life with the die is significantly improved. The effect of doing is recognized. In particular, when the forging process is performed only by oil lubrication without forming a film, the mold life is extended by about 5 times for flange bolts and 10 times or more for M8 cap bolts by barrel polishing. .
【0041】以上本発明の実施例を詳述したがこれはあ
くまで一例示であり、本発明はその主旨を逸脱しない範
囲において種々変更を加えた態様で実施可能である。Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be implemented in various modified modes without departing from the spirit of the invention.
【図1】本発明の一実施例に従ってフランジボルトを製
造する際のスラグ成形工程の説明図である。FIG. 1 is an explanatory diagram of a slag forming process when manufacturing a flange bolt according to an embodiment of the present invention.
【図2】本発明の実施例に従ってフランジボルトを製造
する際のスラグ成形工程の説明図である。FIG. 2 is an explanatory diagram of a slag forming process when manufacturing a flange bolt according to an embodiment of the present invention.
【図3】本発明の実施例に従ってフランジボルトを鍛造
加工する際の工程説明図である。FIG. 3 is a process explanatory view when forging a flange bolt according to the embodiment of the present invention.
【図4】本発明の実施例に従ってM8キャップボルトを
鍛造加工する際の工程説明図である。FIG. 4 is a process explanatory view when the M8 cap bolt is forged according to the embodiment of the present invention.
Claims (6)
はバー材を所定長さごとに切断してスラグを得た後、該
スラグに対して研磨処理による該切断端面を含む表面肌
荒らし処理を施して該表面を凹凸形状化し、該表面肌荒
らし処理に先立って若しくはその後に室温にて該スラグ
の切断端面矯正加工を行い、該凹凸形状化したスラグに
対して油潤滑の下で所定の鍛造加工を行うことを特徴と
する析出硬化型ステンレス鋼の鍛造加工方法。1. A precipitation hardening stainless steel coil or bar material is cut into a predetermined length to obtain a slag, and then the slag is subjected to a surface roughening treatment including the cut end surface by a polishing treatment. The surface is made uneven, and the cut end surface of the slag is corrected at room temperature before or after the surface roughening treatment, and the predetermined forging is performed on the uneven slag under oil lubrication. A method for forging a precipitation hardening stainless steel, which is characterized by being performed.
って前記表面凹凸形状化したスラグを予めオーステナイ
ト温度領域まで加熱した後700℃〜Ms点までの温度
範囲内に冷却し、該温度範囲内で前記鍛造加工を施した
後、マルテンサイト域まで冷却し、その後時効処理する
ことを特徴とする析出硬化型ステンレス鋼の鍛造加工方
法。2. The slag having a surface-roughened shape as set forth in claim 1, which is preheated to an austenite temperature region prior to the forging, and then cooled within a temperature range from 700 ° C. to the Ms point, and within the temperature range. The method for forging precipitation hardening type stainless steel, which comprises performing the above-mentioned forging process, cooling to the martensite region, and then performing an aging treatment.
らしのための研磨処理として研磨石を用いたバレル研磨
を行うことを特徴とする析出硬化型ステンレス鋼の鍛造
加工方法。3. The method for forging precipitation hardening stainless steel according to claim 1, wherein barrel polishing using a polishing stone is performed as the polishing treatment for roughening the surface.
記鍛造加工を、前記スラグに対して被膜形成処理するこ
となく油潤滑のままで行うことを特徴とする析出硬化型
ステンレス鋼の鍛造加工方法。4. The precipitation hardening stainless steel according to claim 1, wherein the forging process is performed with oil lubrication as it is, without forming a coating film on the slag. Forging method.
記鍛造加工に際し、被膜形成した上、油潤滑の下で鍛造
加工を行うことを特徴とする析出硬化型ステンレス鋼の
鍛造加工方法。5. The method for forging a precipitation hardening stainless steel according to claim 1, wherein a film is formed during the forging, and the forging is performed under oil lubrication. .
て、該被膜として黒鉛単体若しくは二硫化モリブデン単
体又は硫酸カリを主成分とする無機塩の下地被膜及び二
硫化モリブデン被膜の組合せから成る二層被膜を形成す
ることを特徴とする析出硬化型ステンレス鋼の鍛造加工
方法。6. A two-layer coating comprising a combination of a graphite simple substance, molybdenum disulfide simple substance, or an undercoating of an inorganic salt containing potassium sulfate as a main component and a molybdenum disulfide coating when forming the film. A method for forging a precipitation hardening stainless steel, which comprises forming a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33277995A JPH09143552A (en) | 1995-11-27 | 1995-11-27 | Method for forging precipitation hardening type stainless steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33277995A JPH09143552A (en) | 1995-11-27 | 1995-11-27 | Method for forging precipitation hardening type stainless steel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09143552A true JPH09143552A (en) | 1997-06-03 |
Family
ID=18258739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33277995A Pending JPH09143552A (en) | 1995-11-27 | 1995-11-27 | Method for forging precipitation hardening type stainless steel |
Country Status (1)
Country | Link |
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JP (1) | JPH09143552A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003014531A1 (en) * | 2001-08-03 | 2003-02-20 | Akita Fine Blanking Co., Ltd. | Method of manufacturing component member in vgs type turbo charger, component member manufactured by the method, exhaust guide assembly of vgs type turbo charger using the component member, and vgs type turbo charger incorporating the exhaust guide assembly |
JP2008155224A (en) * | 2006-12-21 | 2008-07-10 | Osaka Univ | Lubrication method for plastic working, plastic working method and worked material |
WO2012063900A1 (en) * | 2010-11-10 | 2012-05-18 | 株式会社トープラ | Process for manufacture of fastening component made from aluminum-based alloy, and fastening component made from aluminum-based alloy |
JP2020001060A (en) * | 2018-06-27 | 2020-01-09 | 株式会社神戸製鋼所 | Manufacturing method of plastic working material |
-
1995
- 1995-11-27 JP JP33277995A patent/JPH09143552A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003014531A1 (en) * | 2001-08-03 | 2003-02-20 | Akita Fine Blanking Co., Ltd. | Method of manufacturing component member in vgs type turbo charger, component member manufactured by the method, exhaust guide assembly of vgs type turbo charger using the component member, and vgs type turbo charger incorporating the exhaust guide assembly |
JP2008155224A (en) * | 2006-12-21 | 2008-07-10 | Osaka Univ | Lubrication method for plastic working, plastic working method and worked material |
WO2012063900A1 (en) * | 2010-11-10 | 2012-05-18 | 株式会社トープラ | Process for manufacture of fastening component made from aluminum-based alloy, and fastening component made from aluminum-based alloy |
JP2012101247A (en) * | 2010-11-10 | 2012-05-31 | Topura Co Ltd | Method for manufacture fastening component made from aluminum-based alloy, and fastening component made from aluminum-based alloy |
US9534282B2 (en) | 2010-11-10 | 2017-01-03 | Topura Co., Ltd. | Method for manufacturing aluminum based alloy-made fastening part and aluminum based alloy-made fastening part |
TWI575165B (en) * | 2010-11-10 | 2017-03-21 | Topura Co Ltd | Manufacture of fasteners for aluminum-based alloys and fasteners for aluminum-based alloys |
JP2020001060A (en) * | 2018-06-27 | 2020-01-09 | 株式会社神戸製鋼所 | Manufacturing method of plastic working material |
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