JP2022534113A - 金属部品を接合するための方法 - Google Patents
金属部品を接合するための方法 Download PDFInfo
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Abstract
Description
少なくとも第1の金属部品の表面上に溶融点降下剤組成を与えるステップであって、溶融点降下剤組成が、第1の金属部品(11)の溶融温度を低下させるための、合計で少なくとも25wt%のホウ素およびケイ素を含む溶融点降下剤成分と、任意選択で、表面上に溶融点降下剤組成を与えることを容易にするための、結合材成分とを含む、ステップと、
前記表面上の接触点において第2の金属部品を溶融点降下剤組成と接触させるステップと、
第1の金属部品および第2の金属部品を1100℃を超える温度に加熱するステップであって、第1の金属部品の前記表面はそれによって溶融し、第1の金属部品の表面層が溶融点降下剤成分とともに、接触点において第2の金属部品に接する溶融金属層を形成するようになる、ステップと、
接触点において接合が得られるように、溶融された金属層が凝固することを可能にするステップとを含む。本開示によれば、ホウ素が、ホウ酸(H3BO3)、ホウ砂(Na2B4O7)、二ホウ化チタン(TiB2)、および窒化ホウ素(BN)ならびに/もしくはそれらの組合せのうちいずれかから選択されたホウ素化合物に少なくとも部分的に由来するか、またはホウ素源がこのホウ素化合物を含む。これらの化合物は、たとえば元素状ホウ素よりも労働安全の観点からより安全であり、その一方で強い接合をもたらす。さらに、これらの化合物は、接合される金属部品に対する悪影響が小さく、低コストであって、使用するうえで安定していて安全である。
i) >50wt%のFe、<13wt%のCr、<1wt%のMo、<1wt%のNiおよび<3wt%のMn、
ii) >90wt%のFe、
iii) >65wt%のFeおよび>13wt%のCr、
iv) >50wt%のFe、>15.5wt%のCrおよび>6wt%のNi、
v) >50wt%のFe、>15.5wt%のCr、1~10wt%のMoおよび>8wt%のNi、
vi) >97wt%のNi、
vii) >10wt%のCrおよび>60wt%のNi、
viii) >15wt%のCr、>10wt%のMoおよび>50wt%のNi、
ix) >70wt%のCo、ならびに
x) >10wt%のFe、0.1~30wt%のMo、0.1~30wt%のNiおよび>50wt%のCo
のうちの任意のものを含み得る。
ii) 任意選択で、第1の金属部品上に溶融点降下剤組成を与えることを容易にするための結合材成分とを含み、ホウ素は、ホウ酸、ホウ砂、二ホウ化チタンおよび窒化ホウ素のうちの任意の化合物から選択されたホウ素化合物に由来する。
実施例
ホウ素源の試験
結果
12 第2の金属部品
14 溶融点降下剤組成
15 第1の金属部品11の表面
15’ 上面
16 接触点
21 第1の金属部品11の表面層
22 下部層
25 接合
26 溶融した表面層
28 突部
110 板
120 第2の金属部品
210 溶融金属層
Claims (15)
- 1100℃を超える固相線温度を有する金属部品(11、12)において第1の金属部品(11)を第2の金属部品(12)に接合するための方法であって、
- 少なくとも前記第1の金属部品(11)の表面(15)上に溶融点降下剤組成(14)を与えるステップ(201)であって、前記溶融点降下剤組成(14)が、
・第1の金属部品(11)の溶融温度を低下させるための、合計で少なくとも25wt%のホウ素およびケイ素を含む溶融点降下剤成分と、
・任意選択で、前記表面(15)上に前記溶融点降下剤組成(14)を与える前記ステップ(201)を容易にするための、結合材成分とを含む、ステップ(201)と、
- 前記表面(15)上の接触点(16)において、前記第2の金属部品(12)を前記溶融点降下剤組成(14)と接触させるステップ(202)と、
- 1100℃を超える温度に前記第1の金属部品(11)および前記第2の金属部品(12)を加熱するステップ(203)であって、前記第1の金属部品(11)の前記表面(15)はそれによって溶融し、前記第1の金属部品(11)の表面層(21)が前記溶融点降下剤成分とともに、前記接触点(16)において前記第2の金属部品(12)に接触する溶融金属層(210)を形成するようになる、ステップ(203)と、
- 前記接触点(16)において接合(25)が得られるように、前記溶融金属層(210)が凝固することを可能にするステップ(204)とを含む方法において、
前記ホウ素が、ホウ酸、ホウ砂、二ホウ化チタン、窒化ホウ素および/またはそれらの組合せのうちの任意の化合物から選択されたホウ素化合物に少なくとも部分的に由来することを特徴とする方法。 - 前記ホウ素が、前記ホウ素の総重量を基に、ホウ酸、ホウ砂、二ホウ化チタン、窒化ホウ素および/またはそれらの組合せの15~100wt%または50~100wt%の量のうち任意のものに由来する、請求項1に記載の方法。
- 前記ケイ素が、元素状ケイ素と、少なくとも炭化ケイ素、ホウ化ケイ素およびフェロシリコンのうちのいずれかから選択されたケイ素化合物のケイ素とのうち任意のものに由来する、請求項1または2に記載の方法。
- 前記溶融点降下剤成分が少なくとも40wt%のホウ素およびケイ素を含む、請求項1から3のいずれか一項に記載の方法。
- 前記溶融点降下剤成分が少なくとも85wt%のホウ素およびケイ素を含む、請求項1から4のいずれか一項に記載の方法。
- 溶融点降下剤化合物の前記ホウ素およびケイ素の含有量の少なくとも10wt%をホウ素が構成する、請求項1から5のいずれか一項に記載の方法。
- 溶融点降下剤化合物の前記ホウ素およびケイ素の含有量の少なくとも55wt%をケイ素が構成する、請求項1から6のいずれか一項に記載の方法。
- 前記溶融点降下剤成分が50wt%未満の金属要素を含む、請求項1から7のいずれか一項に記載の方法。
- 前記溶融点降下剤成分が10wt%未満の金属要素を含む、請求項1から8のいずれか一項に記載の方法。
- 前記第1の金属部品の厚さが0.1~1.0mm、0.6~1.0mm、または0.3~0.6mmであり、
前記溶融点降下剤組成(14)を与える前記ステップ(201)が、前記第1の金属部品(11)の前記表面(15)上の1mm2ごとに平均0.02~0.12mgのホウ素およびケイ素を与えるステップを含む、請求項1から9のいずれか一項に記載の方法。 - 前記接合(25)の形成を可能にする(204)とき、前記溶融された金属層(21’)における金属が前記接触点(16)まで流れるように、前記表面(15)が、前記表面(15)上の前記接触点(16)によって定義された領域(A2)よりも大きい領域(A1)を有する、請求項1から10のいずれか一項に記載の方法。
- 前記第1の金属部品が、>50wt%のFe、<13wt%のCr、<1wt%のMo、<1wt%のNiおよび<3wt%のMnを含む、請求項1から11のいずれか一項に記載の方法。
- 前記第1の金属部品が>10wt%のCrおよび>60wt%のNiを含む、請求項1から11のいずれか一項に記載の方法。
- 請求項1から13のいずれか一項に記載の方法によって第2の金属部品(12)に接合された第1の金属部品(11)を備える製品。
- 請求項1から13のいずれか一項に記載の方法によって第1の金属部品(11)を第2の金属部品(12)に接合するための溶融点降下剤組成であって、前記溶融点降下剤組成が、i) 溶融温度を低下させるための、少なくとも25wt%のホウ素およびケイ素を含む溶融点降下剤成分と、ii) 任意選択で、前記第1の金属部品(11)上に前記溶融点降下剤組成(14)を与えるステップ(201)を容易にするための、結合材成分とを含み、前記ホウ素が、ホウ酸、ホウ砂、二ホウ化チタンおよび窒化ホウ素のうちの任意の化合物から選択されたホウ素化合物に由来する、溶融点降下剤組成。
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