JPH0285307A - Method for joining ferrous material - Google Patents
Method for joining ferrous materialInfo
- Publication number
- JPH0285307A JPH0285307A JP23462988A JP23462988A JPH0285307A JP H0285307 A JPH0285307 A JP H0285307A JP 23462988 A JP23462988 A JP 23462988A JP 23462988 A JP23462988 A JP 23462988A JP H0285307 A JPH0285307 A JP H0285307A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- powder
- joined
- bonding
- face
- 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 25
- 238000005304 joining Methods 0.000 title claims abstract description 17
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 14
- 239000000843 powder Substances 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 19
- 238000009792 diffusion process Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 abstract description 13
- 238000000227 grinding Methods 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract 3
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005219 brazing Methods 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は、鋼材、鋳鉄材等の鉄系材料の接合方法に係り
、特に、高い接合強度および優れた耐熱性の得られる鉄
系材料の接合方法に関するものである。Detailed Description of the Invention (Technical Field) The present invention relates to a method for joining ferrous materials such as steel materials and cast iron materials, and particularly relates to a method for joining ferrous materials that provides high joint strength and excellent heat resistance. It is something.
（背景技術）
従来から、鋼や鋳鉄等の鉄系材料からなる部材を接合す
る場合には、目的に応じて、有機接着剤などを用いて接
合する方法や、銀ろうや銅ろうなどのろう付により接合
する方法、或いは溶接により溶着する方法等が、多くの
分野において、広く−ｍ的に採用されている。(Background technology) Conventionally, when joining members made of ferrous materials such as steel and cast iron, it has been conventionally possible to join them using an organic adhesive or a soldering method such as silver solder or copper solder, depending on the purpose. A method of joining by bonding, a method of welding by welding, etc. are widely used in many fields.
しかしながら、有機接着剤を用いて、それら鉄系の材料
を接合する場合、接合部（層）が樹脂等の有機物質とな
るため、その接合強度は充分に高められ得ず、しかもそ
の接合部は高い温度には耐えられないという欠点を有し
ている。また、ろう付により接合する場合には、接合強
度は有機接着剤の強度よりも高いものの、ろう付温度（
６００〜８００℃）以上では、接合部（ろう材）が溶融
してしまい、その接合製品を高温下では使用できないと
いう問題があった。さらに、これら有機接着剤及びろう
付による接合手法では、接合製品に繰り返し応力がかか
る場合には、その接合部に応力集中が惹起されて、かか
る接合製品が破損し易いという問題もあったのである。However, when these iron-based materials are joined using an organic adhesive, the joint strength cannot be sufficiently increased because the joint (layer) is made of organic material such as resin. It has the disadvantage of not being able to withstand high temperatures. In addition, when joining by brazing, the joining strength is higher than that of organic adhesives, but the brazing temperature (
If the temperature is higher than 600 to 800° C., the bonded portion (brazing material) will melt, causing the problem that the bonded product cannot be used at high temperatures. Furthermore, with these bonding methods using organic adhesives and brazing, when repeated stress is applied to the bonded product, stress concentration occurs at the joint, making the bonded product susceptible to damage. .
さらに、溶接により鉄系材料を接合する場合には、接合
製品の接合強度としては大きなものが得られるが、溶接
部は非常に高い温度に晒されるため、接合部及びその近
辺に熱変質層若しくは熱影響層が形成されてしまうとい
う問題があったのである。Furthermore, when joining ferrous materials by welding, a high joint strength can be obtained in the joined product, but since the welded part is exposed to extremely high temperatures, a thermally altered layer or a There was a problem in that a heat-affected layer was formed.
（解決課題）
本発明は、上述の如き事情を背景として為されたもので
あって、その解決課題とするところは、高い接合強度お
よび優れた耐熱性が得られ、しかも熱変質層が形成され
ることのない、鉄系材料の接合方法を提供することにあ
る。(Problem to be solved) The present invention was made against the background of the above-mentioned circumstances, and the object to be solved is to obtain high bonding strength and excellent heat resistance, and to prevent the formation of a thermally altered layer. The object of the present invention is to provide a method for joining iron-based materials that does not cause problems.
（解決手段）
そして、本発明は、かかる課題解決のために、鋼材、鋳
鉄材等の鉄系材料を互いに突き合わせて相互に接合する
に際して、それら鉄系材料の突合せ部間に、鉄粉若しく
はそれを主体とする良焼結性の接合粉末を介在させて、
加熱することにより、かかる接合粉末を焼結せしめると
共に、相互拡散にて合金化した接合部を形成せしめるこ
とを特徴とする鉄系材料の接合方法を、その要旨とする
ものである。(Solution Means) In order to solve this problem, the present invention provides, when ferrous materials such as steel materials and cast iron materials are butted and joined together, iron powder or the like is added between the butt portions of the ferrous materials. By interposing a bonding powder with good sinterability mainly consisting of
The gist of the present invention is a method for joining iron-based materials, which is characterized by sintering the joining powder by heating and forming an alloyed joint by mutual diffusion.
（具体的構成）
ところで、本発明によって接合せしめられる鉄系材料と
しては、純鉄、鋼、鋳鉄、或いは鉄を主体とした合金、
更にはそれら材質の粉末を主体として形成される焼結体
等、あらゆる鉄系の材料が、様々な組合せにおいて採用
可能である。(Specific configuration) By the way, the iron-based materials to be joined according to the present invention include pure iron, steel, cast iron, or an alloy mainly composed of iron.
Furthermore, all iron-based materials, such as sintered bodies formed mainly from powders of these materials, can be employed in various combinations.
そして、これらの材料が相互に突き合わされて接合され
ることとなるが、その際、それら材料間の突合せ部間に
は、鉄粉若しくはそれを主体とする接合粉末が介在せし
められ、中でも焼結性の良い粒度の細かい粉末が好適に
介在せしめられる。Then, these materials are butted against each other and joined. At that time, iron powder or a joining powder mainly composed of iron powder is interposed between the butted parts, and in particular, sintered Powder with good properties and fine particle size is suitably interposed.
なお、この接合粉末の種類や粒径、或いは成分等は、接
合に供せられる部材に応じて適宜に選択されるものであ
るが、例えば、平均粒径が１０−以下のカーボニル鉄粉
や、かかるカーボニル鉄粉にＣｕ粉末或いは黒鉛粉末が
添加、混合された接合粉末が有利に用いられる。ここで
配合されるＣｕ粉末は、主に接合粉末の融点を低下させ
て接合層に液相焼結を起こさせるために、また黒鉛粉末
は、主に接合層の強度の向上のために、添加、混合され
るものである。The type, particle size, components, etc. of this bonding powder are appropriately selected depending on the members to be bonded, but for example, carbonyl iron powder with an average particle size of 10 or less, A bonding powder in which Cu powder or graphite powder is added and mixed with such carbonyl iron powder is advantageously used. The Cu powder blended here is mainly added to lower the melting point of the bonding powder to cause liquid phase sintering in the bonding layer, and the graphite powder is added mainly to improve the strength of the bonding layer. , are mixed.
本発明においては、このような接合粉末を用いて、前記
鉄系材料からなる部材を接合せしめるものであるが、こ
の部材に対して、かかる接合粉末が、その接合に関わる
面の少なくとも一方に均一に付与されるのである。なお
、この接合粉末の適用操作は、かかる接合粉末のみを直
接、接合面に散布して付与しても良いが、エタノール等
の適当な液体媒体を用いて接合粉末をスラリー化して、
そしてそのスラリーを所定の接合面に塗布することが好
ましい。In the present invention, such a bonding powder is used to bond the members made of the iron-based material, and the bonding powder is uniformly applied to at least one of the surfaces involved in the bonding of the members. It is given to The application of the bonding powder may be performed by directly scattering only the bonding powder onto the bonding surface, but by slurrying the bonding powder using an appropriate liquid medium such as ethanol,
Then, it is preferable to apply the slurry to a predetermined joint surface.
また、このようにして接合粉末が適用された後、スラリ
ー塗布の場合には、必要に応じてスラリーの乾燥が行な
われた後、それら接合される部材同士が突き合わせられ
て、加熱、焼結操作が実施され、これらの部材が接合さ
れることとなる。この焼結操作によって、被接合部材間
に介在する接合粉末が焼結されると同時に、被接合部材
と接合層の原子が相互拡散して、接合部とその付近の部
位が合金化されるのであり、その結果、被接合部材同士
が高い強度でもって接合せしめられるのである。なお、
この焼結操作は、通常、不活性または還元性雰囲気中に
て行なわれ、１１００〜１１４０°Ｃ程度の温度で、３
０〜４０分間程度、実施される。また、接合部に対して
、ある程度の押圧力を加えて焼結操作を行なうことは、
接合強度の向上に繋がるために好ましいことである。In addition, after the bonding powder has been applied in this way, in the case of slurry application, the slurry is dried as necessary, and then the members to be bonded are butted against each other and heated and sintered. is carried out, and these members are joined. Through this sintering operation, the bonding powder interposed between the parts to be joined is sintered, and at the same time, the atoms of the parts to be joined and the joining layer are mutually diffused, and the joint part and the parts around it are alloyed. As a result, the members to be joined can be joined with high strength. In addition,
This sintering operation is usually carried out in an inert or reducing atmosphere at a temperature of about 1100 to 1140 °C for 3
It is carried out for about 0 to 40 minutes. In addition, performing a sintering operation by applying a certain amount of pressure to the joint
This is preferable because it leads to an improvement in bonding strength.
その後、このように接合された部材は、用途に応じて適
宜の加工、処理等が施されて、目的とする製品に仕上げ
られることとなる。Thereafter, the members joined in this manner are subjected to appropriate processing, treatment, etc. depending on the intended use, and are finished into the desired product.
このような鉄系材料の接合方法によれば、接合部が焼結
されると同時に、接合せしめられる部材と原子拡散を伴
いながら、接合部付近が連続的に合金化されるため、接
合強度を高いものと為し得ると共に、接合部に対する応
力集中が避けられ得るのである。また、接合された部材
は、少なくとも焼結温度程度の高温までは溶融しないた
め、高温下においても高い接合強度を維持することがで
き、更に、接合粉末として焼結性の良い粉末が用いられ
るところから、強固な接合が容易に為され、接合時間の
短縮が有利に図られ得るのである。そして、溶接はどの
高温に晒されることもなく、炉内で均一に加熱されて、
接合されるために、熱変質層や熱影響層の発生をも良好
に阻止され得るのである。According to this method of joining iron-based materials, at the same time as the joint is sintered, the vicinity of the joint is continuously alloyed with the parts to be joined through atomic diffusion, which improves the joint strength. This makes it possible to reduce stress and prevent stress concentration on the joints. In addition, since the joined parts do not melt at least up to the sintering temperature, high joint strength can be maintained even at high temperatures.Furthermore, powder with good sinterability is used as the joining powder. Therefore, strong bonding can be easily achieved and bonding time can be advantageously shortened. And the welding is not exposed to any high temperature, it is heated evenly in the furnace,
Since they are bonded, the generation of a heat-altered layer or a heat-affected layer can be effectively prevented.
（実施例）
以下に、本発明の実施例を示し、本発明を更に具体的に
明らかにすることとするが、本発明が、そのような実施
例の記載によって、何等の制約をも受けるものでないこ
とは、言うまでもないところである。(Examples) Examples of the present invention will be shown below to clarify the present invention more specifically, but the present invention is not limited in any way by the description of such examples. It goes without saying that this is not the case.
また、本発明には、以下の実施例の他にも、更には上記
の具体的記述以外にも、本発明の趣旨を逸脱しない限り
において、当業者の知識に基づいて種々なる変更、修正
、改良等を加え得るものであることが、理解されるべき
である。In addition to the following examples and the above-mentioned specific description, the present invention includes various changes, modifications, and changes based on the knowledge of those skilled in the art, as long as they do not depart from the spirit of the present invention. It should be understood that improvements and the like may be made.
ところで、本実施例においては、第１図に示されるよう
な、先端部が鋳鉄ボンド砥石からなる超音波コアードリ
ル１０を作製した。In this example, an ultrasonic core drill 10 as shown in FIG. 1 was manufactured, the tip of which was made of a cast iron bond grindstone.
そして、このような超音波コアードリル１０の製作のた
めに、先ず、鋳鉄を粉砕したダライ粉とカーボニル鉄粉
とを用意し、それらを前者７５重量％、後者２５重世％
の割合に混合せしめて、鋳鉄混合粉末を調製した。また
、所定のダイヤモンド砥粒を用意し、かかる鋳鉄混合粉
末に２５容量％となるように混合せしめて、砥石原料粉
末を調製した。In order to manufacture such an ultrasonic core drill 10, first, powder made by crushing cast iron and carbonyl iron powder are prepared, and the former is 75% by weight and the latter is 25% by weight.
A cast iron mixed powder was prepared by mixing the powders in the following proportions. In addition, predetermined diamond abrasive grains were prepared and mixed with the cast iron mixed powder at a concentration of 25% by volume to prepare a grindstone raw material powder.
続いて、通常のプレス成形操作により、砥石原料粉末か
らなる砥石層１２と前記鋳鉄混合粉末のみからなる鋳鉄
ポンド層１４との２層構造を有する円筒形状の砥石チッ
プ１６を形成して、還元性雰囲気中にて、１１４０°Ｃ
の温度で、４０分間、焼結を行なった。なお、砥石チッ
プ１６の鋳鉄ボンド層１４側の端面には、テーパ面１８
が設けられた。Subsequently, a cylindrical grindstone chip 16 having a two-layer structure of a grindstone layer 12 made of grindstone raw material powder and a cast iron pound layer 14 made only of the cast iron mixed powder is formed by a normal press forming operation, and the reducibility is reduced. 1140°C in atmosphere
Sintering was carried out at a temperature of 40 minutes. Note that a tapered surface 18 is formed on the end surface of the grindstone chip 16 on the cast iron bond layer 14 side.
was established.
一方、かかるテーパ面１８に対応するテーパ面２０を一
端部に備えた、鋼材（ＳＫＤ−１１）からなるドリルシ
ャンク２２を用意した。なお、これらのテーパ面１８．
２０は、ドリルシャンク２２に対する砥石チップ１６の
位置決め（芯合わせ）及び接合面積の増大のために設け
られたものである。On the other hand, a drill shank 22 made of steel (SKD-11) was prepared, which had a tapered surface 20 corresponding to the tapered surface 18 at one end. Note that these tapered surfaces 18.
Reference numeral 20 is provided for positioning (centering) the grindstone tip 16 with respect to the drill shank 22 and increasing the joint area.
また、粒径が１〜５μｍのカーボニル鉄粉にＣｕ粉末を
均一に混合せしめて、Ｃｕ粉を１０重僅％含むカーボニ
ル鉄粉−銅接合粉末を調製し、この接合粉末に所定量の
エタノールを加えて湿式混合して、スラリーとした。Further, a carbonyl iron powder-copper bonding powder containing 10% by weight of Cu powder was prepared by uniformly mixing Cu powder with carbonyl iron powder having a particle size of 1 to 5 μm, and a predetermined amount of ethanol was added to this bonding powder. In addition, the mixture was wet-mixed to form a slurry.
続いて、この得られたスラリーを、前記ドリルシャンク
２２のテーパ面２０に均一に塗布した後、かかるスラリ
ーを充分乾燥させて、接合層２４を形成した。Subsequently, the obtained slurry was uniformly applied to the tapered surface 20 of the drill shank 22, and then the slurry was sufficiently dried to form a bonding layer 24.
その後、このドリルシャンク２２のテーパ面２０に対し
て、前記砥石チップ１６のテーパ面１８を、接合層２４
を介して突き合わせて、軸方向に押圧力を加えた状態で
、還元性雰囲気中にて、１１４０°Ｃの温度で、４０分
間、焼結操作を実施した。その結果、接合層２４が焼結
されると共に、原子拡散を伴って接合層２４及びその近
辺が連続的に合金化されて、砥石チップ１６とドリルシ
ャンク２２とが接合層２４を介して一体的に良好に接合
されていることが認められた。Thereafter, the tapered surface 18 of the grindstone chip 16 is connected to the bonding layer 24 with respect to the tapered surface 20 of the drill shank 22.
A sintering operation was performed at a temperature of 1140° C. for 40 minutes in a reducing atmosphere with a pressing force applied in the axial direction. As a result, the bonding layer 24 is sintered, and the bonding layer 24 and its vicinity are continuously alloyed with atomic diffusion, so that the grinding wheel tip 16 and the drill shank 22 are integrated with each other through the bonding layer 24. It was observed that the bonding was good.
なお、かかる接合温度では、接合粉末として１０重撥％
のＣ′ｕ粉を含有するカーボニル鉄粉が採用されたため
、接合層２４は被接合部材の鋼や鋳鉄よりも融点が低く
なっており、接合層２４の一部で液相焼結が行なわれ、
空孔がある程度除去され、接合層２４の緻密化と接合強
度の更なる向上が達成された。In addition, at such a bonding temperature, the bonding powder has a repellency of 10%.
Since carbonyl iron powder containing C′u powder of ,
The pores were removed to some extent, and the bonding layer 24 was made denser and the bonding strength was further improved.
その後、必要に応じてツルーイング等の加工を行ない、
超音波コアードリル１０を完成した。After that, we perform processing such as truing as necessary,
Completed ultrasonic core drill 10.
このような手法に従って製作された超音波コアードリル
１０にあっては、接合部２４が連続的に合金化されるた
め、接合強度が高（、また接合部２４における応力集中
が緩和されるようになったのである。更に、接合による
加熱によって、ドリルシャンク２２の焼入処理を同時に
為すこともできたのである。In the ultrasonic core drill 10 manufactured according to such a method, since the joint portion 24 is continuously alloyed, the joint strength is high (and stress concentration at the joint portion 24 is alleviated). Furthermore, by heating during bonding, the drill shank 22 could be hardened at the same time.
因みに、第２図及び第３図は、それぞれ、かかる超音波
コアードリルの接合部の断面組織の顕微鏡写真及び走査
型電子顕微鏡（ＳＥＭ）写真であるが、砥石側の鋳鉄と
シャンク側の鋼とが良好に接合している様子が観察でき
る。なお、上側が鋳鉄ボンド層であり、下側がドリルシ
ャンク（ＳＫＤ−１１）である。また、第４図は、第３
図における接合部断面部分のＥＰＭＡ （Ｘ線マイクロ
アナライザ）による分析写真である。白い点がＣｒ原子
の存在を表わすものであるが、鋳鉄としてはＣｒ原子を
含有しないものを使用していることを考えると、この写
真より、５ＫＤ−１１中のＣｒ原子が接合層を通じて鋳
鉄中へ拡散していることが分かる。Incidentally, FIGS. 2 and 3 are micrographs and scanning electron microscope (SEM) photographs, respectively, of the cross-sectional structure of the joint of such an ultrasonic core drill, and they show that the cast iron on the grinding wheel side and the steel on the shank side are It can be observed that they are well bonded. Note that the upper side is the cast iron bond layer, and the lower side is the drill shank (SKD-11). Also, Figure 4 shows the third
This is an analysis photograph taken using an EPMA (X-ray microanalyzer) of the cross-sectional portion of the joint shown in the figure. The white dots indicate the presence of Cr atoms, but considering that the cast iron used does not contain Cr atoms, this photo shows that the Cr atoms in 5KD-11 are absorbed into the cast iron through the bonding layer. It can be seen that it has spread to
（発明の効果）
以上の説明から明らかなように、本発明に従う鉄系材料
の接合方法によれば、接合部が焼結されると同時に、接
合せしめられる部材と原子拡散を伴いながら、接合部付
近が連続的に合金化されるため、接合強度を著しく高い
ものと為し得ると共に、接合部に対する応力集中が避け
られ得るのである。(Effects of the Invention) As is clear from the above explanation, according to the method for joining iron-based materials according to the present invention, the joining part is sintered, and at the same time, the joining part is sintered and the joined parts are atomically diffused. Since the vicinity is continuously alloyed, the joint strength can be significantly increased, and stress concentration on the joint can be avoided.
また、接合された部材は、少なくとも焼結温度程度の高
温下においても、高い接合強度を維持することが出来、
優れた耐熱性を有する接合製品と為すことが出来るので
あり、更に、接合粉末として焼結性の良い粉末が用いら
れるところから、強固な接合が容易に為され、接合時間
の短縮が有利に図られ得ることとなる。In addition, the joined members can maintain high joint strength even at high temperatures at least as high as the sintering temperature.
It is possible to create a bonded product with excellent heat resistance, and since a powder with good sintering properties is used as the bonding powder, strong bonding can be easily achieved, and the bonding time can be advantageously shortened. It is possible that the
しかも、本発明手法にあっては、溶接はどの高温に晒さ
れることもなく、炉内で均一に加熱されて、接合される
ために、熱変質層や熱影響層の発生を良好に阻止し得る
利点も生ずるのである。Moreover, in the method of the present invention, the welding is not exposed to any high temperature and is uniformly heated and joined in the furnace, which effectively prevents the formation of a heat-altered layer or a heat-affected layer. There are also benefits to be gained.
第１図は、実施例において作製された超音波コアードリ
ルの部分断面正面図である。また、第２図及び第３図は
、かかる超音波コアードリルにおける接合部の断面組織
の顕微鏡写真及び走査型電子顕微鏡（ＳＥＭ）写真であ
り、第４図は、第３図の断面組織部分におけるＥＰＭＡ
（Ｘ線マイクロアナライザ）によるＣｒ原子の拡散状
態を表わす分析写真である。
１０：超音波コアードリル
１２：砥石層 １４：鋳鉄ボンド層１６：砥石
チップ １８，２０：テーパ面２２ニトリルシヤン
ク ２４：接合層FIG. 1 is a partially sectional front view of an ultrasonic core drill manufactured in an example. Furthermore, FIGS. 2 and 3 are micrographs and scanning electron microscope (SEM) photographs of the cross-sectional structure of the joint in such an ultrasonic core drill, and FIG. 4 is the EPMA in the cross-sectional structure of FIG. 3.
It is an analysis photograph showing the diffusion state of Cr atoms taken by an X-ray microanalyzer. 10: Ultrasonic core drill 12: Grinding wheel layer 14: Cast iron bond layer 16: Grinding wheel tip 18, 20: Tapered surface 22 Nitrile shank 24: Bonding layer
Claims (1)
に接合するに際して、それら鉄系材料の突合せ部間に、
鉄粉若しくはそれを主体とする良焼結性の接合粉末を介
在させて、加熱することにより、かかる接合粉末を焼結
せしめると共に、相互拡散にて合金化した接合部を形成
せしめることを特徴とする鉄系材料の接合方法。When ferrous materials such as steel and cast iron are butted and joined together, there is a
It is characterized by interposing iron powder or a bonding powder mainly composed of iron powder with good sinterability and heating it to sinter the bonding powder and form an alloyed bonding part through mutual diffusion. A method for joining ferrous materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23462988A JPH0285307A (en) | 1988-09-19 | 1988-09-19 | Method for joining ferrous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23462988A JPH0285307A (en) | 1988-09-19 | 1988-09-19 | Method for joining ferrous material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0285307A true JPH0285307A (en) | 1990-03-26 |
Family
ID=16974032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23462988A Pending JPH0285307A (en) | 1988-09-19 | 1988-09-19 | Method for joining ferrous material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0285307A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010129206A3 (en) * | 2009-05-04 | 2011-02-24 | Federal-Mogul Corporation | Powder metal ultrasonic welding tool and method of manufacture thereof |
| US8157156B2 (en) | 2006-05-23 | 2012-04-17 | Federal-Mogul World Wide, Inc. | Powder metal friction stir welding tool and method of manufacture thereof |
| WO2015052791A1 (en) * | 2013-10-09 | 2015-04-16 | 古河電気工業株式会社 | Joining method for metal body and joining structure for metal body |
-
1988
- 1988-09-19 JP JP23462988A patent/JPH0285307A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8157156B2 (en) | 2006-05-23 | 2012-04-17 | Federal-Mogul World Wide, Inc. | Powder metal friction stir welding tool and method of manufacture thereof |
| US8196797B2 (en) | 2006-05-23 | 2012-06-12 | Federal-Mogul Corporation | Powder metal ultrasonic welding tool and method of manufacture thereof |
| US8534529B2 (en) | 2006-05-23 | 2013-09-17 | Federal-Mogul World Wide, Inc. | Powder metal friction stir welding tool and method of manufacture thereof |
| US8834595B2 (en) | 2006-05-23 | 2014-09-16 | Federal-Mogul Corporation | Powder metal ultrasonic welding tool and method of manufacture thereof |
| WO2010129206A3 (en) * | 2009-05-04 | 2011-02-24 | Federal-Mogul Corporation | Powder metal ultrasonic welding tool and method of manufacture thereof |
| WO2015052791A1 (en) * | 2013-10-09 | 2015-04-16 | 古河電気工業株式会社 | Joining method for metal body and joining structure for metal body |
| JPWO2015052791A1 (en) * | 2013-10-09 | 2017-03-09 | 古河電気工業株式会社 | Metal body joining method and metal body joining structure |
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