JPS6245020B2 - - Google Patents
Info
- Publication number
- JPS6245020B2 JPS6245020B2 JP55096186A JP9618680A JPS6245020B2 JP S6245020 B2 JPS6245020 B2 JP S6245020B2 JP 55096186 A JP55096186 A JP 55096186A JP 9618680 A JP9618680 A JP 9618680A JP S6245020 B2 JPS6245020 B2 JP S6245020B2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- bonding
- steel
- carbon
- bonding material
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 238000009792 diffusion process Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 238000005219 brazing Methods 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 9
- 229920000178 Acrylic resin Polymers 0.000 claims description 8
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 238000005304 joining Methods 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 description 16
- 238000003466 welding Methods 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 230000005496 eutectics Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 229910000677 High-carbon steel Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- -1 hexyl Chemical class 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 3
- 229910002593 Fe-Ti Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 229920002319 Poly(methyl acrylate) Polymers 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229920000196 poly(lauryl methacrylate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000120 polyethyl acrylate Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Description
【発明の詳細な説明】
本発明は拡散ろう付による鋼の接合方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of joining steel by diffusion brazing.
拡散ろう付とは、接合材間に接合材よりも融点
の低いインサート材を挿入し、継手全体をインサ
ート材の融点以上、接合材の融点以下の温度に加
熱すると、インサート材のみが溶融し、その後、
インサート材原子が接合材中へ拡散することによ
り溶融層が等温凝固し、これによつて接合を完了
させる方法である。この拡散ろう付は、従来は、
接合材がNi基耐熱合金やTi合金の場合にのみ用
いられており、この場合には、インサート材は接
合材と同系合金に融点低下元素を添加したものを
用い、例えばNi基耐熱合金ではホウ素、Ti合金
では銅などを添加している。 Diffusion brazing is when an insert material with a lower melting point than the joining material is inserted between the joining materials, and when the entire joint is heated to a temperature above the melting point of the insert material and below the melting point of the joining material, only the insert material melts. after that,
In this method, atoms of the insert material diffuse into the bonding material, causing the molten layer to solidify isothermally, thereby completing the bonding. Conventionally, this diffusion brazing is
It is used only when the bonding material is a Ni-based heat-resistant alloy or Ti alloy. In this case, the insert material is an alloy similar to the bonding material with the addition of an element that lowers the melting point. For example, boron is used in a Ni-based heat-resistant alloy. , Copper etc. are added to Ti alloys.
一方、鋼に対して拡散ろう付が用いられた例が
従来なかつたが、これは次のような理由による。
すなわち、拡散ろう付法のインサート材として
は、上記の如く一般に母材と同系の合金に融点低
下元素を添加したものを用いるが、鋼の場合、炭
素を添加した共晶鋼を用いると鋼中の炭素の拡散
速度が速いために昇温過程でインサート材中の炭
素濃度が減少し、溶接温度では溶融しない。また
他の元素、例えばNi，Cu等は拡散速度が遅いた
めに接合部にインサート材の溶質原子富化層が残
留し、均質な継手が得られないためである。そし
て従来、鋼の面接合においは、ろう付、拡散溶
接、爆着、ロールクラツド等が適用されていた
が、これらは次のような欠点を有する。 On the other hand, there has never been an example of diffusion brazing being used for steel, and this is due to the following reasons.
In other words, as mentioned above, as an insert material for diffusion brazing, an alloy similar to the base material is generally used with the addition of an element that lowers the melting point. Due to the fast diffusion rate of carbon, the carbon concentration in the insert material decreases during the heating process, and it does not melt at the welding temperature. In addition, other elements such as Ni and Cu have a slow diffusion rate, so a solute atom-enriched layer of the insert material remains at the joint, making it impossible to obtain a homogeneous joint. Conventionally, methods such as brazing, diffusion welding, explosion bonding, and roll cladding have been applied to surface bonding of steel, but these methods have the following drawbacks.
(1) ろう付では接合面に異相が形成されるため接
合強度が低い。(1) In brazing, different phases are formed on the joint surface, resulting in low joint strength.
(2) 拡散溶接では加圧が必要で、大型部材の溶接
や継手面形状が複雑な場合には接合が不可能で
ある。(2) Diffusion welding requires pressure, making it impossible to weld large components or join surfaces with complex shapes.
(3) 爆着、ロールクラツドでは平板同志の接合し
かできず、継手形状が制限される。(3) Explosive welding and roll cladding can only join flat plates together, which limits the joint shape.
本発明は鋼の接合における、上記の従来法の欠
点を解消し、加圧せずに接合母材と同質継手を得
る鋼の接合法を提供することを目的とし、鋼の拡
散ろう付にあたり、インサート材として、脆く箔
化が困難であるため従来用いることのできなかつ
た純炭素を利用可能にしたものである。すなわ
ち、炭素粉末を、アクリル系樹脂を溶剤に溶かし
た粘結剤と、混合してシート化したものをインサ
ート材として用いると、継手全体を鋼の共晶点以
上の温度に加熱したとき、粘結剤、溶剤は蒸発し
て無残渣となり、インサート材は炭素だけとなる
が、炭素と接合材中の鉄との相互拡散により生成
する共晶鋼が溶融し、その後、溶融層から接合材
へ炭素が拡散して溶融層の炭素濃度が下がり、等
温凝固して継手部が接合材と同組成となつて接合
が完了し、鋼の拡散ろう付が成功することを見出
し、本発明に到達したものである。 The purpose of the present invention is to eliminate the drawbacks of the above-mentioned conventional methods in joining steel, and to provide a method for joining steel that obtains a joint that is the same as the joining base material without applying pressure. This makes it possible to use pure carbon, which could not be used in the past because it is brittle and difficult to make into foil, as an insert material. In other words, if carbon powder is mixed with a binder made by dissolving acrylic resin in a solvent and made into a sheet and used as an insert material, the viscosity will increase when the entire joint is heated to a temperature above the eutectic point of the steel. The binder and solvent evaporate, leaving no residue, leaving only carbon as the insert material, but the eutectic steel produced by mutual diffusion between carbon and iron in the bonding material melts, and then from the molten layer to the bonding material. The present invention was achieved by discovering that carbon diffuses and the carbon concentration in the molten layer decreases, solidifying isothermally so that the joint part has the same composition as the joining material, completing the joint, and making diffusion brazing of steel successful. It is something.
本発明のインサート材中の粘結剤におけるアク
リル系樹脂としては、ポリメタクリル酸メチル、
ポリメタクリル酸エチル、ポリメタクリル酸ｎ―
ヘキシル、ポリメタクリル酸ｎ―オクチル、ポリ
メタクリル酸ラウリル等のポリメタクリル酸エス
テル、ポリアクリル酸メチル、ポリアクリル酸エ
チル、ポリアクリル酸ブチル、ポリアクリル酸イ
ソブチル、ポリアクリル酸２―エチルヘキシル、
ポリアクリル酸ｎ―オクチル等のポリアクリル酸
エステル、メチルメタクリレートスチレン共重合
ポリマー等が挙げられ、溶剤としてはトルエン、
イソプロピルアルコール等が好ましく用いられ
る。インサート材配合組成割合は、炭素97重量
％、アクリル系樹脂３重量％〜炭素20重量％、ア
クリル樹脂80重量％が好適で、樹脂量が少なすぎ
るとシート状に固まらず、また炭素につては樹脂
が真空中での加熱により蒸発した後、少なくとも
10μ、好ましくは100μ程度の厚さの炭素が残る
必要があり、シート厚さが1000μ以上になると溶
融層が接合材の外部へ流れ落ち接合不良となるの
で、できるだけ500μ以下に抑えた方がよい。こ
のような割合で炭素粉末と粘結剤と混合し、脆
く、箔化が困難な炭素を100μ程度の薄肉のシー
トとすることにより、粘末状のままでは不可能で
あつた水平でない場合接合場所、例えば曲面や鉛
直面の接合面にも使用可能で、インサート厚さが
均一であるので、継手性能の接合場所によるばら
つきがなくなる。 The acrylic resin in the binder in the insert material of the present invention includes polymethyl methacrylate,
Polyethyl methacrylate, polymethacrylic acid n-
Polymethacrylate esters such as hexyl, polyn-octyl methacrylate, polylauryl methacrylate, polymethyl acrylate, polyethyl acrylate, butyl polyacrylate, isobutyl polyacrylate, 2-ethylhexyl polyacrylate,
Examples include polyacrylic esters such as n-octyl polyacrylate, methyl methacrylate styrene copolymer, and solvents include toluene,
Isopropyl alcohol and the like are preferably used. The suitable composition ratio of the insert material is 97% by weight of carbon, 3% by weight of acrylic resin - 20% by weight of carbon, and 80% by weight of acrylic resin. After the resin is evaporated by heating in vacuum, at least
It is necessary to leave carbon with a thickness of about 10 μm, preferably 100 μm. If the sheet thickness exceeds 1000 μm, the molten layer will flow to the outside of the bonding material, resulting in poor bonding, so it is better to keep it to 500 μm or less as much as possible. By mixing carbon powder and binder in such proportions and making carbon, which is brittle and difficult to form into foil, into a thin sheet of approximately 100 μm, it is possible to join non-horizontal surfaces, which would have been impossible if the carbon was in a sticky powder form. It can be used anywhere, for example on curved or vertical joint surfaces, and the insert thickness is uniform, eliminating variations in joint performance depending on the joint location.
本発明の拡散ろう付にあたり、第１図に示すよ
うに鋼の接合材、１，２間に、炭素粉末と粘結剤
からなるシート状のインサート材３をはさみ、継
手全体を真空雰囲気、不活性ガス雰囲気、あるい
は大気中で加熱したとき、接合材の鉄原子とイン
サート材の炭素原子が相互拡散を起こし、接合界
面に共晶組成の鋼が生成する。共晶鋼は融点が
1150℃と接合材に比べて低いので、継手全体を共
晶温度以上の1200℃付近に加熱すると接合材は溶
融しないが、接合界面に生成された共晶鋼が溶融
する。その後、溶融層から接合材へ炭素原子が拡
散することにより、溶融層中の炭素量が減少し、
溶融層は炭素濃度をその温度における液相線濃度
に保つために固液界面が溶融層へ向かつて移動
し、等温凝固が起こり継手部は接合材と同組成と
なつて接合が完了する。図中、４はチヤンバー、
５は耐熱鋼、セラミツク等の支持台、６は熱遮蔽
板、７は加熱ヒータ、８は真空ポンプ１１より連
結されたパイプ、９，１０はバルブ、１２は不活
性ガスボンベである。 In the diffusion brazing of the present invention, a sheet-shaped insert material 3 made of carbon powder and a binder is sandwiched between steel joint materials 1 and 2, as shown in FIG. When heated in an active gas atmosphere or the air, iron atoms in the bonding material and carbon atoms in the insert material undergo mutual diffusion, producing steel with a eutectic composition at the bonding interface. The melting point of eutectic steel is
At 1150°C, it is lower than the bonding material, so if the entire joint is heated to around 1200°C, above the eutectic temperature, the bonding material will not melt, but the eutectic steel formed at the joint interface will melt. After that, carbon atoms diffuse from the molten layer to the bonding material, reducing the amount of carbon in the molten layer.
In order to maintain the carbon concentration in the molten layer at the liquidus concentration at that temperature, the solid-liquid interface moves toward the molten layer, and isothermal solidification occurs, and the joint has the same composition as the bonding material, completing the bonding. In the figure, 4 is a chamber,
Reference numeral 5 is a support base made of heat-resistant steel or ceramic, 6 is a heat shielding plate, 7 is a heater, 8 is a pipe connected to a vacuum pump 11, 9 and 10 are valves, and 12 is an inert gas cylinder.
上記の接合方法において、溶融相が等温凝固す
るとき、ボイドや接合不良が生じないようにする
ため、炭素粉末または粘結剤中にFe―Mn、Fe―
Si、Fe―Ti、Fe―Alなどの脱酸剤や、H3BO3，
NiCl2＋FeCl3などの界面活性剤を混合すること
ができる。すなわち、接合材表面に酸化皮膜が形
成したり、溶融層中に酸素が多く存在したり、接
合材と溶融層の濡れ性が悪いと、継手部はボイド
や融合不良などの接合欠陥が生じるが、インサー
ト材中に全重量の0.1〜５％の脱酸剤、0.5〜15％
の界面活性剤を混入することにより、これらの接
合欠陥をなくし、継手性能をより一層向上させる
ことができる。 In the above joining method, when the molten phase is isothermally solidified, Fe--Mn, Fe--
Deoxidizing agents such as Si, Fe-Ti, Fe-Al, H 3 BO 3 ,
Surfactants such as NiCl 2 +FeCl 3 can be mixed. In other words, if an oxide film forms on the surface of the bonding material, if there is a large amount of oxygen in the molten layer, or if the wettability between the bonding material and the molten layer is poor, bonding defects such as voids and poor fusion will occur at the joint. , 0.1-5% of the total weight of the deoxidizer in the insert material, 0.5-15%
By mixing these surfactants, these bonding defects can be eliminated and the joint performance can be further improved.
本発明方法においては、インサート材と接合材
が相互拡散してできる溶融層が継手部を満たし、
あとは拡散現象のみで接合が完了するので、外部
から荷重を加えず、接合材の自重のみで接合を行
なうことができる。したがつて、接合面形状、接
合面粗度に左右されずに接合が可能であり、接合
面が平坦でなく複雑な形状（３次元面）の場合
や、加圧すると座屈するような構造のものでも接
合可能である。 In the method of the present invention, a molten layer formed by mutual diffusion of the insert material and the bonding material fills the joint,
Since the bonding is completed only by the diffusion phenomenon, the bonding can be performed using only the weight of the bonding material without applying any external load. Therefore, it is possible to join without being affected by the shape or roughness of the joint surface, and it is possible to join when the joint surface is not flat but has a complex shape (three-dimensional surface), or when the structure is such that it buckles when pressure is applied. Even objects can be joined.
本発明方法は、クラツド刃物、ハードフエーシ
ング部品、インペラ等に応用できる。 The method of the present invention can be applied to clad cutters, hard facing parts, impellers, etc.
実施例１ （低合金鋼の拡散ろう付）
接合材として0.18％Ｃ―1.11％Mn―0.60％Ni―
0.52％Moの低合金鋼を用い、インサート材とし
て炭素粉末を、ポリメタクリル酸エチルをトルエ
ンで溶いた粘結剤（炭素74％、アクリル樹脂26
％）と混合して200μ厚さにシート化したものを
使用した。接合材表面は機械加工後、アセトンで
脱脂した。溶接条件は溶接温度が1200℃、溶接時
間が５時間で、５×10-4Torrの真空中におい
て、継手には外部から加圧せず、接合材の自重の
み（１ｇ／mm2）で接合を行なつた。接合部のミク
ロ組織を第２図の写真（ナイタール腐食、×100）
で示す。接合面Ａはほとんど見分けがつかなくな
り、接合面の粒界が接合材側へ移動しているのが
見られる。また継手の引張試験を行なつたとこ
ろ、接合材から破断し、引張強度は72Kg／cm2であ
つた。この値は接合材のみに継手と同じ熱履歴を
与えたときの強度に等しく、接合材と同等の強度
を有するすぐれた継手が得られることが立証され
た。Example 1 (Diffusion brazing of low alloy steel) 0.18%C-1.11%Mn-0.60%Ni- as bonding material
Using 0.52% Mo low alloy steel, carbon powder was used as the insert material, and a binder made of polyethyl methacrylate dissolved in toluene (74% carbon, 26% acrylic resin) was used.
%) and formed into a sheet with a thickness of 200μ. After machining, the surface of the bonding material was degreased with acetone. The welding conditions were a welding temperature of 1200°C, a welding time of 5 hours, and a vacuum of 5 x 10 -4 Torr, with no external pressure applied to the joint, and only the weight of the joining material (1 g/mm 2 ) to join. I did this. The microstructure of the joint is shown in Figure 2 (nital corrosion, ×100).
Indicated by The bonding surface A is almost indistinguishable, and it can be seen that the grain boundaries of the bonding surface have moved toward the bonding material. When the joint was subjected to a tensile test, it broke from the bonding material and the tensile strength was 72 kg/cm 2 . This value is equal to the strength when only the bonding material is subjected to the same thermal history as the joint, and it has been proven that an excellent joint with the same strength as the bonding material can be obtained.
実施例２ （高炭素鋼の拡散ろう付）
接合材として、高速度工具鋼Ｂ（0.8％Ｃ―５
％Mo―４％Cr―６％Ｗ―２％Ｖ）と高炭素鋼Ｃ
（0.3％Ｃ―2.5％Mo―2.7％Cr）を用いた異材接合
を行なつた。インサート材および接合条件は実施
例１の場合と同じである。接合部のミクロ組織を
第３図の写真（ナイタール腐食、×100）で示す
が、接合面Ａは全く見分けがつかない。また第４
図に硬度分布を示すが〔縦軸：硬度（Hv、荷重
１Kg）、横軸：接合面Ａからの距離（mm）〕、接合
面付近で硬度は連続的に変化しており、すぐれた
接合が行なわれたことが判る。Example 2 (Diffusion brazing of high carbon steel) High speed tool steel B (0.8% C-5
%Mo-4%Cr-6%W-2%V) and high carbon steel C
(0.3%C-2.5%Mo-2.7%Cr) was used to join dissimilar materials. The insert material and bonding conditions are the same as in Example 1. The microstructure of the joint is shown in the photograph in Figure 3 (nital corrosion, ×100), but the joint surface A is completely indistinguishable. Also the fourth
The hardness distribution is shown in the figure [vertical axis: hardness (Hv, load 1Kg), horizontal axis: distance from joint surface A (mm)], and the hardness changes continuously near the joint surface, resulting in an excellent joint. It is clear that this was done.
実施例３ （低合金鋼の拡散ろう付）
接合材として0.18％Ｃ―1.11％Mn―0.60％Ni―
0.52％Moの低合金鋼を用い、インサート材とし
て、炭素粉末と、ポリメタクリル酸エチルをトル
エンで溶いた粘結剤（炭素74％、アクリル樹脂26
％）とを混合し、これに脱酸剤としてFe―Tiを
0.1〜15％、界面活性剤としてNiCl2＋FeCl3を0.5
〜15％添加して、200μ厚さにシート化したもの
を使用した。接合材表面は機械加工後、アセトン
で脱脂した。溶接条件は、溶接温度1200℃、溶接
時間５時間で、５×10-4Torrの真空中におい
て、継手には外部から圧を加えずに接合材の自重
のみ（１ｇ／mm2）で接合を行なつた。接合部のミ
クロ組織は第２図と同様である。脱酸剤、界面活
性剤の量を種々変化させたいずれのインサート材
の場合も接合面は明確に判別できず、接合面の粒
界が両接合材側へ移動しているのが見られる。ま
た継手の引張試験を行なつたところ、接合材から
破断し、引張強度は71〜73Kg／mm2であつた。この
値は接合材のみに継手と同じ熱履歴を与えたとき
の強度に等しく、接合材と同等の継手強度を有す
る接合がなされている。Example 3 (Diffusion brazing of low alloy steel) 0.18%C-1.11%Mn-0.60%Ni- as bonding material
Using 0.52% Mo low alloy steel, the insert material was carbon powder and a binder made of polyethyl methacrylate dissolved in toluene (74% carbon, 26% acrylic resin).
%), and Fe-Ti is added as a deoxidizer to this.
0.1-15%, 0.5% NiCl2 + FeCl3 as surfactant
~15% was added to form a sheet with a thickness of 200μ. After machining, the surface of the bonding material was degreased with acetone. The welding conditions were a welding temperature of 1200°C, a welding time of 5 hours, and a vacuum of 5 x 10 -4 Torr, with no external pressure applied to the joint, and the joint was made using only the weight of the joining material (1 g/mm 2 ). I did it. The microstructure of the joint is similar to that shown in FIG. In all of the insert materials in which the amounts of deoxidizing agent and surfactant were varied, the bonding surface could not be clearly distinguished, and it was observed that the grain boundaries at the bonding surface had moved toward both bonding materials. When the joint was subjected to a tensile test, it broke from the bonding material, and the tensile strength was 71 to 73 kg/mm 2 . This value is equal to the strength when only the bonding material is given the same thermal history as the joint, and the joint has the same joint strength as the bonding material.
特に接合面積が大きく増大したとき、実施例１
では継手部にボイド、融合不良等の溶接欠陥を発
生する度合が高くなるが、実施例３では脱酸剤の
添加で、接合材表面や溶融層中の酸素の幣害を除
き、また界面活性剤で溶融層の湯流れ、ぬれ性を
上昇せしめ、融合不良の発生を阻止することが判
明した。なお、脱酸剤としてFe―Mn、Fe―Si、
Fe―Al（0.1〜５％添加）、界面活性剤として
H3BO3（0.5〜1.5％）を使用したときの試験も行
なつたが、いずれも同様の好結果が得られた。 Especially when the bonding area increases significantly, Example 1
However, in Example 3, the addition of a deoxidizing agent removes the damage caused by oxygen on the surface of the joining material and in the molten layer, and also improves the surface activity. It has been found that the agent increases the flow and wettability of the molten layer and prevents the occurrence of poor fusion. In addition, Fe-Mn, Fe-Si,
Fe-Al (added 0.1-5%), as a surfactant
Tests using H 3 BO 3 (0.5-1.5%) were also conducted, and similar good results were obtained in both cases.
実施例４ （高炭素鋼の拡散ろう付）
接合材として0.8％Ｃ―５％Mo―４％Cr―６％
Ｗ―２％Ｖの高速度工具鋼と0.3％Ｃ―2.5％Mo
―2.7％Crの高炭素鋼を用い、インサート材とし
て実施例３のものを使用した。接合表面処理、接
合条件は実施例３と同様である。接合部のミクロ
組織、硬度分布につては実施例２と同じ結果が得
られると共に、接合面積が増大したとき、継手部
のボイド、融合不良の消失効果が極めて大きいこ
とが判明した。Example 4 (Diffusion brazing of high carbon steel) 0.8%C-5%Mo-4%Cr-6% as bonding material
W-2%V high speed tool steel and 0.3%C-2.5%Mo
-2.7% Cr high carbon steel was used, and the insert material of Example 3 was used. The bonding surface treatment and bonding conditions are the same as in Example 3. Regarding the microstructure and hardness distribution of the joint, the same results as in Example 2 were obtained, and it was found that when the joint area increased, the effect of eliminating voids and poor fusion in the joint was extremely large.
第１図は本発明の拡散ろう付法の概略を示し、
第２図および第３図は本発明で得られた接合部の
ミクロ組織写真であり、第４図は本発明で得られ
た接合鋼の硬度分布を示すグラフである。
FIG. 1 shows an outline of the diffusion brazing method of the present invention,
FIGS. 2 and 3 are microstructure photographs of joints obtained by the present invention, and FIG. 4 is a graph showing the hardness distribution of the joint steel obtained by the present invention.
Claims (1)
を溶剤に溶かした粘結剤と混合してシート状にし
たインサート材を用い、継手全体を約1200℃以上
に加熱して接合を行なう拡散ろう付方法。 ２ 鋼を接合材とし、炭素粉末を、アクリル樹脂
を溶剤に溶かした粘結剤、および脱酸剤、界面活
性剤の１種またはそれ以上と混合してシート状に
したインサート材を用い、継手全体を約1200℃以
上に加熱して接合を行なう拡散ろう付方法。[Claims] 1. Using steel as the bonding material, carbon powder mixed with a binder made of acrylic resin dissolved in a solvent, and an insert material made into a sheet, the entire joint is heated to about 1200°C or higher. Diffusion brazing method in which joining is performed using 2 Joints are made using steel as a bonding material and carbon powder mixed with one or more of the following: a binder made of acrylic resin dissolved in a solvent, a deoxidizing agent, and a surfactant, and made into a sheet shape. Diffusion brazing method in which the entire body is heated to over 1200°C to join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9618680A JPS5722867A (en) | 1980-07-16 | 1980-07-16 | Diffusion brazing method of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9618680A JPS5722867A (en) | 1980-07-16 | 1980-07-16 | Diffusion brazing method of steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5722867A JPS5722867A (en) | 1982-02-05 |
| JPS6245020B2 true JPS6245020B2 (en) | 1987-09-24 |
Family
ID=14158274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9618680A Granted JPS5722867A (en) | 1980-07-16 | 1980-07-16 | Diffusion brazing method of steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5722867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017094596A1 (en) * | 2015-12-03 | 2017-06-08 | 本田技研工業株式会社 | Method for bonding steel material and device for bonding steel material |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177992A (en) * | 1984-02-24 | 1985-09-11 | Mazda Motor Corp | Method for joining porous member and its product |
| EP0389625A1 (en) * | 1988-02-29 | 1990-10-03 | Kabushiki Kaisha Komatsu Seisakusho | Process for resistance diffusion junction |
| US5648176A (en) * | 1994-02-08 | 1997-07-15 | Nippon Steel Corporation | Metallic honeycomb body for supporting catalyst for automobiles and process for producing the same |
| US6209777B1 (en) * | 1999-09-13 | 2001-04-03 | New Century Technology Co., Ltd. | Fusion welding method for binding surfaces of two metals |
| JP5338153B2 (en) * | 2008-06-18 | 2013-11-13 | 株式会社豊田中央研究所 | Member joining method and joining material |
| JP5618314B2 (en) * | 2009-03-26 | 2014-11-05 | 国立大学法人大阪大学 | Method for producing metal material and metal material |
| KR20230036983A (en) * | 2021-09-08 | 2023-03-15 | 고오슈우하네쓰렌 가부시기가이샤 | Steel joined body and method for manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51122150A (en) * | 1975-04-02 | 1976-10-26 | Nippon Zeon Co Ltd | Polyolefin resin composition |
| JPS546041A (en) * | 1977-06-15 | 1979-01-17 | Sumitomo Chem Co Ltd | Polypropylene composition with improved gloss |
| JPS5469155A (en) * | 1977-11-14 | 1979-06-02 | Showa Denko Kk | Polypropylene composition having improved transparency |
-
1980
- 1980-07-16 JP JP9618680A patent/JPS5722867A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51122150A (en) * | 1975-04-02 | 1976-10-26 | Nippon Zeon Co Ltd | Polyolefin resin composition |
| JPS546041A (en) * | 1977-06-15 | 1979-01-17 | Sumitomo Chem Co Ltd | Polypropylene composition with improved gloss |
| JPS5469155A (en) * | 1977-11-14 | 1979-06-02 | Showa Denko Kk | Polypropylene composition having improved transparency |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017094596A1 (en) * | 2015-12-03 | 2017-06-08 | 本田技研工業株式会社 | Method for bonding steel material and device for bonding steel material |
| JPWO2017094596A1 (en) * | 2015-12-03 | 2018-06-14 | 本田技研工業株式会社 | Steel joining method and steel joining apparatus |
| CN108290243A (en) * | 2015-12-03 | 2018-07-17 | 本田技研工业株式会社 | The joint method of steel and the engagement device of steel |
| US20180354065A1 (en) * | 2015-12-03 | 2018-12-13 | Honda Motor Co., Ltd. | Method for bonding steel material and device for bonding steel material |
| CN108290243B (en) * | 2015-12-03 | 2020-11-20 | 本田技研工业株式会社 | Method and apparatus for joining steel materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5722867A (en) | 1982-02-05 |
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