JPS63268530A - Warm forging method - Google Patents
Warm forging methodInfo
- Publication number
- JPS63268530A JPS63268530A JP10096587A JP10096587A JPS63268530A JP S63268530 A JPS63268530 A JP S63268530A JP 10096587 A JP10096587 A JP 10096587A JP 10096587 A JP10096587 A JP 10096587A JP S63268530 A JPS63268530 A JP S63268530A
- Authority
- JP
- Japan
- Prior art keywords
- billet
- forging
- lubricant
- warm forging
- temperature
- 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
- 238000005242 forging Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims description 27
- 239000000314 lubricant Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004327 boric acid Substances 0.000 claims abstract description 6
- 229910052810 boron oxide Inorganic materials 0.000 claims abstract description 5
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000010273 cold forging Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 9
- 230000003746 surface roughness Effects 0.000 description 8
- 238000005553 drilling Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012733 comparative method Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、耐焼付性に侵れ、迅速かつ安全に温間鍛造を
行うことができる。鉄系材料の温間鍛造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention has excellent seizure resistance and can perform warm forging quickly and safely. This invention relates to a warm forging method for iron-based materials.
温間鍛造は、冷間ｆｉ造と熱間鍛造との間の温度領域に
おいて鍛造する方法であり、一般的に鋼材の場合には６
００〜９００″Ｃでの鍛造をいう。この温度域において
は、鋼は冷間に比べて変形抵抗が低く。Warm forging is a method of forging in a temperature range between cold forging and hot forging, and generally in the case of steel materials, the temperature is 6.
It refers to forging at 00 to 900"C. In this temperature range, steel has lower deformation resistance than when cold.
鍛造中に材料が割れるおそれも少ない、また、熱間に比
べ加工温度が低いため、酸化スケールの発生及び脱炭も
少ない。There is less risk of the material cracking during forging, and because the processing temperature is lower than in hot forging, there is less occurrence of oxidized scale and less decarburization.
しかしながら、温間鍛造における問題としては。However, as a problem in warm forging.
金型と被加工材（ビレット）との間の摩擦条件が厳しい
ために、特にパンチの焼付きを生じ易く、また金型の軟
化や摩耗も進行し易いことなどがある。Since the friction conditions between the die and the workpiece (billet) are severe, the punch is particularly susceptible to seizure, and the die is susceptible to softening and wear.
そのため、古くから黒鉛系の潤滑剤が主として使用され
ている。しかし、この場合は比較例で示すごと（、第１
図に示すごとき、深いカップの後方せん孔加工を行う場
合には、パンチに焼付を生じ、良好な鍛造ができないし
、黒鉛使用に基づく作業環境が悪い。Therefore, graphite-based lubricants have been mainly used for a long time. However, in this case, as shown in the comparative example (,
As shown in the figure, when drilling a deep cup at the rear, the punch seizes, making it impossible to perform good forging, and the work environment is poor due to the use of graphite.
また、潤滑剤として低融点金属酸化物である酸化ホウ素
（Ｂｔ Ｏｓ ）を用い、これを温間鍛造に先立ってビ
レットに塗布しておくという方法も提案されている（特
開昭６Ｏ−２１０３３８）、この方法は。Additionally, a method has been proposed in which boron oxide (BtOs), a low melting point metal oxide, is used as a lubricant and is applied to the billet prior to warm forging (Japanese Patent Laid-Open No. 6O-210338). , this method is.
上記黒鉛系潤滑剤に比して、深いカップの後方せん孔加
工においても優れた耐焼付性を示す、しかしながら、こ
の場合においては、Ｂｔ Ｏｓ粉末を水、アルコール等
の溶媒に分散させ、更に結合剤としてＣＭＣ（カルボキ
シルメチルセルロース）、ＰＶＡ（ポリビニルアルコー
ル）等を加えたスラリーを作り、これを塗布するもので
ある。そのため、溶媒と１ して水を
用いた場合は塗布後の乾燥に時間を要するし、アルコー
ルを用いた場合は引火の危険もある。Compared to the above-mentioned graphite-based lubricants, it shows superior seizure resistance even in deep cup rear drilling. However, in this case, BtOs powder is dispersed in a solvent such as water or alcohol, and a binder A slurry is prepared by adding CMC (carboxyl methyl cellulose), PVA (polyvinyl alcohol), etc., and this is applied. Therefore, when water is used as a solvent, it takes time to dry after application, and when alcohol is used, there is a risk of ignition.
それ故、工場における温間鍛造のラインに適用するには
問題がある。Therefore, there is a problem in applying it to a warm forging line in a factory.
また、Ｂ、Ｏ，粉末を用いて、これを高温ＵＯＯ〜８０
０℃）に加熱したビレット表面に供給し。In addition, using B, O, powder, it is heated to a high temperature of UOO~80
0°C) onto the surface of the billet.
Ｂｔｕｓ粉末を溶融させて付着させる方法もある。There is also a method of melting and depositing Btus powder.
この方法は、塗布を短時間で行うことができる。しかし
、後述する第６図に示すごとり、鍛造温度が高い程焼き
付きを多く生じる。これは、高温で生ずるビレットの酸
化スケールと８２０２とが反応して。This method allows coating to be performed in a short time. However, as shown in FIG. 6, which will be described later, the higher the forging temperature, the more seizure occurs. This is due to the reaction between 8202 and the oxidized scale of the billet that occurs at high temperatures.
潤滑性能が低下するためと考えられる。This is thought to be due to a decrease in lubrication performance.
本発明は、上記従来技術の問題点に鑑み、ＢＺＯｌを用
いる前記従来技術の長所も生かしながら、更に優れた耐
焼付性を発揮し、迅速かつ安全に温間鍛造を行うことが
できる鉄系材料の温間鍛造方法を提供しようとするもの
である。In view of the problems of the prior art described above, the present invention provides a ferrous material that exhibits even better seizure resistance and can be quickly and safely warm-forged while also taking advantage of the advantages of the prior art using BZOl. The purpose of the present invention is to provide a warm forging method.
本発明は、ホウ酸を主成分とする前処理剤を鉄系材料か
らなるビレット表面に塗布した後、該ビレットを加熱す
ると共に酸化ホウ素を主成分とする潤滑剤をビレット表
面に塗布し、その後温間０造することを特徴とする鉄系
材料の温間鍛造方法にある。The present invention involves applying a pretreatment agent containing boric acid as a main component to the surface of a billet made of iron-based material, heating the billet, and applying a lubricant containing boron oxide as a main component to the billet surface. A warm forging method for iron-based materials characterized by zero warm forging.
本発明において、ホウ酸（Ｈ，ＢＯ３）を主成分とする
前処理剤としては、ＨｉＢＯｓ又はこのものにＣＭＣ，
ＰＶＡなとの結合剤を加えたものを用いる。また、前処
理剤をビレットの表面に塗布するに当たっては、前処理
剤を水と混合してスラリー状となし、浸漬、はけ塗り、
スプレー等により塗布する。In the present invention, the pretreatment agent containing boric acid (H, BO3) as a main component is HiBOs or CMC,
Use a binder such as PVA. In addition, when applying the pretreatment agent to the surface of the billet, the pretreatment agent is mixed with water to form a slurry, and the pretreatment agent is immersed, brushed, or
Apply by spraying, etc.
塗布する前処理剤中のＨｚＢＯｓはビレットの表面Ｉｎ
（当たり１０〜６０ｇとすることが好ましい、ｌＯｇ／
賛より少ない場合は、ビレットを温間鍛造温度まで加熱
したときにビレット表面の酸化抑制効果が劣り、前記耐
焼付性が低下する。Ｈｓ ＢＯｓの塗布量は多いほど、
上記酸化抑制効果があるが、６０ｇ／ｒｒｆよりも多く
なると、塗布時の通常のビレット塩！（８０〜２５０℃
）では、前処理剤のプレコート被膜を乾燥させることが
困難となり、その後温間鍛造の高温に加熱する際に被膜
に発泡や創離を生じ易くなる。また、上記の塗布は、上
記被膜にワレ等の損傷を生じさせないために、２５０℃
以下で行うことが好ましい、また、上記前処理剤の塗布
は、ビレット上の前処理剤を乾燥し、プレコート被膜を
形成させる。HzBOs in the pretreatment agent to be applied is applied to the surface of the billet.
(Preferably 10 to 60 g per unit, lOg/
If the amount is less than the above, the effect of suppressing oxidation on the billet surface will be poor when the billet is heated to the warm forging temperature, and the seizure resistance will be reduced. The greater the amount of Hs BOs applied, the more
It has the above-mentioned oxidation suppressing effect, but if it exceeds 60g/rrf, it will be used as normal billet salt when applied! (80~250℃
), it becomes difficult to dry the pre-coat film of the pre-treatment agent, and the film is likely to foam or break when heated to a high temperature for warm forging. In addition, in order to prevent damage such as cracking to the above-mentioned film, the above-mentioned application should be carried out at 250°C.
The application of the pretreatment agent, which is preferably carried out below, dries the pretreatment agent on the billet to form a precoat film.
次に、上記前処理剤の塗布、乾燥後のビレットの加熱は
５８０〜８００℃まで行う、この加熱は１次に示す潤滑
剤の塗布を行うためのものである。Next, the billet after application of the pretreatment agent and drying is heated to 580 to 800°C. This heating is for applying the lubricant shown in the first step.
上記加熱後に、ビレット表面に塗布する潤滑剤は。What is the lubricant applied to the billet surface after the above heating?
Ｂ２Ｏ，又はこのものにＰｉｅｓ（五酸化リン）。B2O, or this stuff with Pieces (phosphorus pentoxide).
Ｎ ａ ｚ Ｏ（酸化ナトリウム）、ＫｚＯ（酸化カリ
ウム）などを添加したものである。しかして、この潤滑
剤はその粉末等をスプレー又はシャワー等によりビレッ
ト表面に塗布する。この際ビレットの温度は。N az O (sodium oxide), KzO (potassium oxide), etc. are added. The powder of this lubricant is then applied to the billet surface by spraying or showering. At this time, the temperature of the billet is
６００〜８００℃としておくことが好ましい、６００℃
よりも低いと、Ｂｔ ０３の融点（５７７℃）付近又は
それ以下であるためにＢｔ Ｏｓ粉末がビレ・ノドに接
しても直ちに溶融、粘着し難（、迅速な潤滑剤の塗布が
行えないためである。また、８００℃よりも高いと、上
記）１３ＢＯ３がビレット表面の酸化を充分に抑制し難
くなり、ＢｔＯｚによる温間鍛造時の潤滑性能を発揮し
難いからである（第゛５図参照）。Preferably 600 to 800°C, 600°C
If the temperature is lower than that, the melting point of Bt 03 (577°C) is around or below, so even if the Bt Os powder comes into contact with the fin/nod, it will be difficult to melt and stick (because the lubricant cannot be quickly applied). In addition, if the temperature is higher than 800°C, it becomes difficult for 13BO3 (above) to sufficiently suppress oxidation of the billet surface, making it difficult for BtOz to exhibit its lubrication performance during warm forging (see Figure 5). ).
また、Ｂｚ Ｏｆｆの塗布量は、ビレ・ν′トの表面１
Ｍ当たり少なくとも２０ｇとすることが好ましい・これ
より少ない場合には、塗布後鍛造までの間に、ビレット
の酸化とＢ２０１層の変質とを生じるおそれがあるから
である。Also, the amount of Bz Off applied is as follows:
It is preferable that the amount is at least 20 g per M. If it is less than this, there is a risk of oxidation of the billet and deterioration of the B201 layer after application and before forging.
また、鍛造温度が７００〜８００℃のときは、この温度
まで昇温したビレットに潤滑剤を塗布して。Also, when the forging temperature is 700 to 800°C, a lubricant is applied to the billet that has been heated to this temperature.
直ぐに温間鍛造を行うことができる。また、潤滑剤を６
００〜７００℃で塗布したときには、鍛造温度までビレ
ットを再加熱する。Warm forging can be performed immediately. Also, add 6 lubricants.
When applied at 00-700°C, the billet is reheated to forging temperature.
温間鍛造温度は７００〜８５０℃が好ましく、８５０℃
よりも高いと潤滑剤であるＢ！０．とビレットの鋼とが
反応してＢｔｏｘＮが変質し、潤滑性能が著しく低下す
る。The warm forging temperature is preferably 700 to 850°C, and 850°C
If it is higher than B, it is a lubricant! 0. The BtoxN reacts with the billet steel, resulting in deterioration of BtoxN and a significant drop in lubrication performance.
なお、上記のごときビレットの加熱は電気炉加熱など種
々の手段があるが高周波誘導加熱法によることが好まし
い。該加熱法は、加熱所要時間が短く。Although there are various means for heating the billet as described above, such as heating in an electric furnace, it is preferable to use a high frequency induction heating method. This heating method requires a short heating time.
ビレット表面の酸化を効果的に防止する。Effectively prevents billet surface oxidation.
本発明においては、鍛造温度近くの高温において潤滑剤
を塗布する以前に、低温においてＨ，ＢＯ３を塗布して
そのプレコート被膜によってビレットの表面を覆うので
、上記潤滑剤の塗布温度（６００〜８００℃）における
ビレット表面の酸化を抑制することができる。したがっ
て、優れた耐焼付性を示す温間鍛造を行うことができる
。In the present invention, before applying the lubricant at a high temperature near the forging temperature, H, BO3 is applied at a low temperature and the surface of the billet is covered with a pre-coat film. ) can suppress oxidation of the billet surface. Therefore, warm forging exhibiting excellent seizure resistance can be performed.
また、潤滑剤の塗布は高温において行うので、従来のご
とく潤滑剤塗布後における長い乾燥時間も必要なく、迅
速である。また、この塗布とは従来のごとくアルコール
溶媒のスラリーは用いないので１作業中における引火の
危険は全くない。Furthermore, since the lubricant is applied at high temperatures, there is no need for a long drying time after applying the lubricant, which is required in the conventional method, and the process is quick. Furthermore, since this application does not use an alcohol solvent slurry as in the past, there is no risk of ignition during one operation.
また、上記のごと（１本発明は前処理剤の塗布を比較的
低温（２５０℃以下）で行っておき、その後加熱、潤滑
剤塗布、温間鍛造を行うものであり、前処理剤塗布はそ
の後の工程と切り離すこともできる。In addition, as mentioned above (1) in the present invention, the pretreatment agent is applied at a relatively low temperature (250°C or less), and then heating, lubricant application, and warm forging are performed; It can also be separated from subsequent processes.
しかして、工場における温間鍛造の実用ラインは数秒に
ビレット１個の割合で成形しているのが通常であり、迅
速性が要求されている。それ故１本発明における前処理
剤塗布は、ライン外で行っておき、その後の加熱等の工
程をラインで行えば、上記のごとき迅速性、安全性を一
層生かした。耐焼付性に優れた温間鍛造を行うことがで
きる。However, in a practical warm forging line in a factory, one billet is usually formed every few seconds, and speed is required. Therefore, if the pretreatment agent application in the present invention is performed outside the line, and the subsequent steps such as heating are performed on the line, the above-mentioned speed and safety can be further utilized. Warm forging with excellent seizure resistance can be performed.
実施例１
ビレットとしてｓ４５ｃｉｍｌを用い、これに前処理剤
及び潤滑剤を塗布して、第１図に示すごとき方法により
、後方せん孔を行った。Example 1 Using S45 ciml as a billet, a pretreatment agent and a lubricant were applied to the billet, and backward drilling was performed by the method shown in FIG.
即ち、直径３０ｍａ＋、高さ３５ｍｍの円柱状の上記ビ
レットを１４０℃に予熱し、これをＨ，ＢＯｓ ７０ｇ
とＣＭＣ０，７５ｇと界面活性剤１ ｃｃと９０℃の水
１００ｃｃとを混合した前処理剤の溶液に、浸漬し。That is, the above-mentioned cylindrical billet with a diameter of 30 ma+ and a height of 35 mm was preheated to 140°C, and 70 g of H, BOs was added to the billet.
and 0.75 g of CMC, 1 cc of surfactant, and 100 cc of water at 90°C.
その表面にビレットｔｒｒｒ当たり４０ｇのＨ，ＢＯ３
の被膜を形成した。次いで、このビレットを高周波誘導
加熱装置により８００″Ｃまで加熱し、潤滑剤としての
８２０．をスプレーにより、該ビレット表面に１ｒｒｆ
当たりＢ！０３粉末４０ｇを塗布した。40g of H, BO3 per billet trrr on its surface
A film was formed. Next, this billet is heated to 800''C using a high-frequency induction heating device, and 1rrf of 820. as a lubricant is sprayed onto the billet surface.
Hit B! 40g of 03 powder was applied.
次に、第１図に示すごとく、上記ビレット３をコンテナ
（金型）■に入れ８００℃において圧力１４０ｋｇ／ｍ
ｍ”で温間鍛造による後方せん孔を行った。Next, as shown in FIG.
Rear drilling was performed by warm forging at 1.0 m''.
ここにコンテナ１の内径は３０ｍｍ、パンチ２は５ＫＨ
５１製でパンチ先端形状は直径２１．２ｍｍ、肩半径８
ｍ１１． ランド部２１の長さは２ｍｍであった。また
。Here, the inner diameter of container 1 is 30mm, and punch 2 is 5KH.
Made of 51, the punch tip has a diameter of 21.2 mm and a shoulder radius of 8.
m11. The length of the land portion 21 was 2 mm. Also.
最大せん孔深さは５１ｍｍであった。The maximum drilling depth was 51 mm.
また、比較のために、前処理剤としてのＨ，ＢＯｌの塗
布を行わず、他は上記と同様にして、後方せん孔を行っ
た。For comparison, backward drilling was performed in the same manner as above, except that H and BOI were not applied as pretreatment agents.
その結果、前者の本発明法では何らの焼付きは見られな
かったが、後者の前処理剤を塗布しなかった比較法は焼
付きを生じた。また、上記温間鍛造後の上記パンチ２の
アール部（弧状部）２２における周方向の表面あらさを
測定し、その結果を第２図に示した。ここに「表面あら
さ」とは、上記温間鍛造後のパンチ表面の荒れ状態（焼
付き状態）を単位μｍで示すものであり、この値が大き
いほど耐焼付性が悪いことを示す。As a result, no seizure was observed in the former method of the present invention, but seizure occurred in the latter comparative method in which no pretreatment agent was applied. Further, the surface roughness in the circumferential direction of the rounded portion (arc-shaped portion) 22 of the punch 2 after the warm forging was measured, and the results are shown in FIG. The term "surface roughness" herein refers to the roughness (seizure state) of the punch surface after the warm forging in units of μm, and the larger this value is, the worse the seizure resistance is.
なお、同図におけるＡは上記本発明法を、Ｂは上記比較
法を示す（以下、第３．４図においても同じ）。In this figure, A indicates the method of the present invention, and B indicates the comparative method (hereinafter, the same applies to FIG. 3.4).
実施例２
ヒＬｉ ７ ）を、ＨＩ ＢＯ３５ｇとＣＭＣ０，２５
ｇと界面活性剤１ ｃｃと水１００ｃｃからなる前処理
剤の溶液に浸漬し、ビレット表面に約１０ｇ／イのＨ。Example 2 HI BO35g and CMC0.25
The billet was immersed in a solution of a pretreatment agent consisting of 1 cc of surfactant and 100 cc of water, and about 10 g/I of H was applied to the surface of the billet.
ＢＯ，被膜を形成した。その後、これを６００℃まで加
熱し、スプレーによりＢｉａｓ粉末を６０ｇ／ボ塗布し
た。BO, a film was formed. Thereafter, this was heated to 600° C., and 60 g/bottle of Bias powder was applied by spraying.
その後、再加熱して８００℃となし、温間鍛造を行った
。なお、上記した条件以外は実施例１と同様である。Thereafter, it was reheated to 800°C and warm forged. Note that conditions other than those described above are the same as in Example 1.
また、比較のため、前処理剤を塗布することなく。Also, for comparison, without applying any pretreatment agent.
上記と同様にして温間鍛造を行った。Warm forging was performed in the same manner as above.
その結果、前者の本発明法は焼付きがなかったが。As a result, the former method of the present invention did not cause burn-in.
後者の比較法では焼付きを生じていた。The latter comparative method caused burn-in.
また、パンチのアール部における表面あらさを。Also, check the surface roughness of the rounded part of the punch.
前記第２図と同様にして、第３図に示す。It is shown in FIG. 3 in the same manner as in FIG. 2 above.
実施例３
ビレットにＨｚＢＯｓを４０ｇ／ボ塗布し、６００℃に
おいてスプレーによりＢ茸０３を８０ｇ／ｒｒｆ（塗布
し、その後８５０℃において、温間鍛造を行った。これ
らの条件以外は、実施例１と同じ条件である。Example 3 40g/rrf of HzBOs was applied to the billet, and 80g/rrf of B mushroom 03 was applied by spraying at 600°C, and then warm forging was performed at 850°C. The same conditions apply.
また、比較のためＨｓＢＯｓを塗布することなく。Also, for comparison, without applying HsBOs.
上記と同様に温間鍛造を行った。Warm forging was performed in the same manner as above.
その結果、８５０”Ｃという高温における温間鍛造では
あったが１本発明法では焼付を生じなかった。As a result, although warm forging was performed at a high temperature of 850''C, no seizure occurred using the method of the present invention.
しかし、比較法では著しい焼付を生じていた。However, the comparative method caused significant burn-in.
また、パンチのアール部における表面あらさを。Also, check the surface roughness of the rounded part of the punch.
前記第２図と同様にして第４図に示す。It is shown in FIG. 4 in the same manner as in FIG. 2 above.
上記の実施例工ないし３より明らかなごとく１本発明法
（第２〜４図のＡ）は、上記比較法（第２〜４図のＢ）
に比して、優れた耐焼付性を示していることが分かる。As is clear from the above Examples to 3, the method of the present invention (A in Figures 2 to 4) is different from the comparative method (B in Figures 2 to 4).
It can be seen that it shows excellent seizure resistance compared to the above.
実施例４
ビレット表面への前処理剤としてのＨｓＢＯｓの塗ｑ量
と、温間鍛造直前に高温において行う潤滑剤としてのＢ
ｔｕｓの塗布温度との関係を知るため。Example 4 Amount of HsBOs applied as a pre-treatment agent to the billet surface and B as a lubricant applied at high temperature immediately before warm forging
To know the relationship between tus and coating temperature.
両者の条件を種々に変えながら、他は、前記実施例１と
同様の条件で温間鍛造による後方せん孔加工を行った。The rear drilling process by warm forging was performed under the same conditions as in Example 1, except that both conditions were changed variously.
その結果を、第５図に、横軸にＨｓＢＯｓ塗布量（ｇ／
％）を、縦軸にＢヨ０．塗布温度（”Ｃ）をとって示す
、同図において１点線５はＢ２０．の融点（５７７℃）
を示し、これ以下の領域ＺではＢｚＯｌが溶融しないた
めビレット表面に塗布することが出来ないことを示して
いる。The results are shown in Figure 5, where the horizontal axis shows the amount of HsBOs applied (g/
%) on the vertical axis, Byo0. The dotted line 5 in the same figure, which shows the coating temperature ("C), is the melting point (577°C) of B20.
This shows that in the region Z below this, BzOl does not melt and cannot be applied to the billet surface.
また、実線４と上記点線５で囲まれるｙ ６１域（斜線
部分）は、上記温間鍛造において優れた潤滑性能（耐焼
付性優秀）を示した。また、実線４より上のＸ領域にお
いては、焼付きが生じていた。Further, the y61 region (shaded area) surrounded by the solid line 4 and the dotted line 5 showed excellent lubrication performance (excellent seizure resistance) in the warm forging. Further, in the X region above the solid line 4, burn-in occurred.
同図より知られるごとく、潤滑剤としてのＢｚＯ５を塗
布する温度が高いほど、前処理剤としてのＨｓＢＯｓを
塗布する量が多く要求される。しかして。As can be seen from the figure, the higher the temperature at which BzO5 as a lubricant is applied, the greater the amount of HsBOs as a pretreatment agent required. However.
Ｂ２０．の塗布温度が６００℃の場合、Ｈ，ＢＯ。B20. When the coating temperature is 600°C, H, BO.
は約１０ｇ／ｒｒｆ以上塗布すれば良いが、８００℃の
場合にはＨ，ＢＯ３が約４０ｇ／ｎ？以上必要である。It is sufficient to apply more than about 10 g/rrf of H and BO3 at 800°C, but about 40 g/n of H and BO3? The above is necessary.
比較例
前処理剤を塗布することなく、高温に加熱したビレット
に潤滑剤としてのＢ２０．粉末を塗布（溶融。Comparative Example B20. as a lubricant was applied to a billet heated to a high temperature without applying a pretreatment agent. Apply powder (melt.
付着）シ、その後８００℃で温間鍛造を行った。Ｂ２Ｏ
３塗布時のビレットの温度は、６００，８００゜９００
℃の３種類とし、ＢｚＯｘの塗布は２０〜１２０ｇ／ｒ
ｒｒにおいて各積行った。adhesion), and then warm forging was performed at 800°C. B2O
3. The temperature of the billet during application was 600,800°900
℃, and BzOx coating is 20 to 120g/r.
Each product was performed in rr.
その他は１前記実施例１と同様の条件であった。Other conditions were the same as in Example 1 above.
その結果を、第６図に横軸にＢｉａｓの塗布量（ｇ／ｒ
ｒｆ）を、縦軸にパンチ表面あらさくμｍ）をとって、
各温度毎に示した。なお、同図には、室温（約２０℃）
において、ＢｉａｓとＣＭＣと水とからなるスラリー状
の潤滑剤を塗布し、乾燥し、その後このビレットを鍛造
温度（８００℃）に加熱して温間鍛造を行った場合のデ
ータも示した。The results are shown in Figure 6, where the horizontal axis shows the application amount of Bias (g/r
rf) and punch surface roughness (μm) on the vertical axis,
Shown at each temperature. In addition, the figure shows room temperature (approximately 20℃)
Data is also shown for the case where a slurry-like lubricant consisting of Bias, CMC, and water was applied, dried, and then this billet was heated to the forging temperature (800° C.) to perform warm forging.
同図より知られるごと＜、Ｂｔ Ｏ，粉末の塗布温度が
８００，９００℃の場合には、塗布量を多くしても著し
い焼き付き（パンチ表面あらさ大）を生じてしまう、ま
た、６００℃においても、塗布量を６０ｇ／ｒｒ１以上
とすればパンチ表面あらさば０．２μｍ程度に低下する
が、焼き付きは以前として大きい。As is known from the same figure, if the coating temperature of BtO powder is 800,900℃, even if the coating amount is increased, significant sticking (large punch surface roughness) will occur; Also, if the coating amount is 60 g/rr1 or more, the punch surface roughness is reduced to about 0.2 μm, but the sticking is still large.
この理由は、前記従来技術の説明でも述べたごと（。The reason for this is as stated in the explanation of the prior art (.
高温において生ずるビレットの酸化スケールが８２０、
と反応して潤滑性能を低下させてしまうためと考えられ
る。The oxidation scale of the billet that occurs at high temperatures is 820,
This is thought to be because the lubrication performance deteriorates due to the reaction with
これらのことは１本発明のごとく前処理剤とじてのＨ，
ＢＯ，を事前に塗布しておかない場合には。These points are as follows: (1) H as a pretreatment agent as in the present invention;
If BO, is not applied in advance.
焼き付きが大きくなることを示している。This indicates that the burn-in will increase.
一方、同図において、室温においてＢ２０．のスラリー
を塗布しておいたものは、４０ｇ／ｎｆ以上の塗布であ
れば、パンチ表面あらさば低く、焼き付きを殆ど生じて
いない、しかし、この方法は前記のごとく塗布後の乾燥
に時間を要したり、アルコール溶媒を用いる必要がある
など、迅速性、安全性に問題がある。また、ＢｘＯｓＯ
量も多く必要とし不経済である。On the other hand, in the same figure, B20. If the slurry is coated with 40 g/nf or more, the punch surface roughness is low and there is almost no sticking. However, as mentioned above, this method requires time to dry after coating. There are problems with speed and safety, such as the need to use an alcohol solvent. Also, BxOsO
It requires a large amount and is uneconomical.
第１ないし５図は９本発明の実施例を示し、第１図は後
方せん孔押し出しの方法を示す断面図、第２゜３及び４
図は実施例１．２及び３における結果を示す図、第５図
は実施例４で示したＨ、ＢＯ，塗布量とＢｚＯｓ塗布温
度との関係を示す図、第６図は比較例における結果を示
す図である。
２０９．パンチ、 ２１．、、ランド部。
２２、、、アール部、 ３．、、ビレット。
Ａ、、、Ｈ，ＢＯ，塗布あり。
Ｂ、、 、Ｈ，ＢＯ，塗布なし。
Ｙ９１．耐焼付性優秀領域。1 to 5 show nine embodiments of the present invention, FIG. 1 is a cross-sectional view showing a method of pushing out a rear hole, and FIG.
The figure shows the results in Examples 1, 2 and 3, Figure 5 shows the relationship between H, BO, coating amounts and BzOs coating temperature shown in Example 4, and Figure 6 shows the results in Comparative Example. FIG. 209. Punch, 21. ,, Land Department. 22, R part, 3. ,, billet. A, , H, BO, with coating. B, , H, BO, no coating. Y91. Excellent seizure resistance.
Claims (5)
るビレット表面に塗布した後、該ビレットを加熱すると
共に酸化ホウ素を主成分とする潤滑剤をビレット表面に
塗布し、その後温間鍛造することを特徴とする鉄系材料
の温間鍛造方法。(1) After applying a pretreatment agent mainly composed of boric acid to the surface of a billet made of iron-based materials, the billet is heated and at the same time a lubricant mainly composed of boron oxide is applied to the billet surface. A warm forging method for iron-based materials, which is characterized by cold forging.
℃以下において行うことを特徴とする特許請求の範囲第
１項に記載の鉄系材料の温間鍛造方法。(2) Applying a pretreatment agent containing boric acid as the main component,
The method for warm forging of iron-based materials according to claim 1, characterized in that the forging is carried out at a temperature of 0.degree. C. or lower.
ことを特徴とする特許請求の範囲第１項に記載の鉄系材
料の温間鍛造方法。(3) The method for warm forging iron-based materials according to claim 1, wherein the lubricant is applied at a temperature of 600 to 800°C.
、その後ビレットを７００〜８５０℃に加熱して、鍛造
することを特徴とする特許請求の範囲第１項に記載の鉄
系材料の温間鍛造方法。(4) The application of the lubricant is carried out at 600 to 700°C, and then the billet is heated to 700 to 850°C for forging. Interval forging method.
以上塗布することを特徴とする特許請求の範囲第１項に
記載の鉄系材料の温間鍛造方法。(5) Lubricant: 20g per 1m^2 of billet surface
The warm forging method for iron-based materials according to claim 1, characterized in that the above coating is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10096587A JPS63268530A (en) | 1987-04-23 | 1987-04-23 | Warm forging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10096587A JPS63268530A (en) | 1987-04-23 | 1987-04-23 | Warm forging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63268530A true JPS63268530A (en) | 1988-11-07 |
| JPH0336608B2 JPH0336608B2 (en) | 1991-06-03 |
Family
ID=14288063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10096587A Granted JPS63268530A (en) | 1987-04-23 | 1987-04-23 | Warm forging method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63268530A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012086573A1 (en) * | 2010-12-20 | 2012-06-28 | 昭和電工株式会社 | Punch for cold backward extrusion forging |
| JP2014213361A (en) * | 2013-04-26 | 2014-11-17 | 株式会社神戸製鋼所 | Hot forging method |
| JP2015042413A (en) * | 2013-08-26 | 2015-03-05 | 株式会社神戸製鋼所 | Forging method of hollow shaft forging |
-
1987
- 1987-04-23 JP JP10096587A patent/JPS63268530A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012086573A1 (en) * | 2010-12-20 | 2012-06-28 | 昭和電工株式会社 | Punch for cold backward extrusion forging |
| CN103415360A (en) * | 2010-12-20 | 2013-11-27 | 昭和电工株式会社 | Punch for cold backward extrusion forging |
| KR101511884B1 (en) * | 2010-12-20 | 2015-04-13 | 쇼와 덴코 가부시키가이샤 | Punch for cold backward extrusion forging, cold backward extrusion forging device, production method of shaped member for brake piston, production method of brake piston and production method of closed-end cylindrical forged product |
| CN103415360B (en) * | 2010-12-20 | 2015-11-25 | 昭和电工株式会社 | Cold extrusion forging drift and forging apparatus backward |
| JP2014213361A (en) * | 2013-04-26 | 2014-11-17 | 株式会社神戸製鋼所 | Hot forging method |
| JP2015042413A (en) * | 2013-08-26 | 2015-03-05 | 株式会社神戸製鋼所 | Forging method of hollow shaft forging |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0336608B2 (en) | 1991-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1110611A (en) | Preparation of metals for cold forming | |
| US4147639A (en) | Lubricant for forming metals at elevated temperatures | |
| JPS6121287B2 (en) | ||
| JPS63268530A (en) | Warm forging method | |
| US2357269A (en) | Art of treating ferrous metal articles | |
| US5584945A (en) | Lubricant carrier salt for metal forming | |
| US1647851A (en) | Method of treating metal articles | |
| CN107740080A (en) | A kind of phosphorization treatment process before high-carbon steel wire rod pickling free drawing | |
| US2048247A (en) | Bearing and method of making same | |
| CA1154745A (en) | Metal drawing compound composition and method of use | |
| US2458715A (en) | Method of preventing scaling | |
| US2850418A (en) | Composition for use in preparing metal for a deforming operation and method of deforming | |
| US2833667A (en) | Method of lining a bearing shell | |
| US3230750A (en) | Forming and heat treatment of sheetmetal articles with organophilic cation-modified clay | |
| US3380859A (en) | Metal cold forming | |
| CA1084391A (en) | Preparation of aluminum for cold working | |
| US2320830A (en) | Cylindrical surface of internal combustion engines | |
| US2357342A (en) | Method of drawing wire | |
| JPH0115327B2 (en) | ||
| JP2638317B2 (en) | Lubricant for hot tube rolling and method for preventing seizure of hot rolled tube | |
| CA1044123A (en) | Cold rolled steel strip | |
| JPS61180634A (en) | Lubricating method for warm forging | |
| US2893114A (en) | Hot working of metals | |
| CN213134985U (en) | Long-life roller sleeve | |
| JPS60124433A (en) | Oil lubrication treating method of forging stock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |