Sanyo Special Steel Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Fine Sinter Co., Ltd

Honda Motor Co., Ltd.

Tokyo Braze Co., Ltd.

Shingo Fukumoto

Toshiyuki Sawada

Nobuyuki Shinohara

Yusaku Yoshida

Masaru Sugimoto

Yoshihisa Ueda

Kimihiko Ando

Akihiko Yanagitani

Yoshitaka Tsuji

Tomoki Okita

Tetsuji Kuse

Yoshitaka Tsujii

Shogo Matsuki

Makoto Asami

Nobuki Matsuo

Kimihiko Andou

Takashi Tsuyumu

Kotaro Matsu

Toshiyuki Sanyo Special Steel Co Ltd Sawada

Disclosed is a Ni&#x2014;Cr-based brazing alloy including, on the basis of mass %: 15%&#x3c;Cr&#x3c;30%; 3%&#x3c;P&#x3c;12%; 0%&#x2264;Si&#x3c;8%; 0.01%&#x3c;C&#x3c;0.06%; 0%&#x2264;Ti+Zr&#x3c;0.1%; 0.01%&#x3c;V&#x3c;0.1%; 0%&#x2264;Al&#x3c;0.01%; 0.005%&#x3c;O&#x3c;0.025%; 0.001%&#x3c;N&#x3c;0.050%; 0%&#x2264;Nb&#x3c;0.1%; and the balance being Ni and incidental impurities. Inequality (1): 0.2&#x2264;0.24V %/C %&#x2264;1.0 is satisfied if the alloy contains no Nb, and Inequality (2): 0.2&#x2264;(0.24V %+0.13Nb %)/C %&#x2264;1.0 is satisfied if the alloy contains Nb. Also disclosed is an inexpensive Ni&#x2014;Cr-based brazing alloy containing a trace amount of V for use in the production of stainless steel heat exchangers and other steel articles. The alloy has a low liquidus temperature and high corrosion resistance, and achieves high brazing strength.

Ni&#x2014;Cr based alloy brazing material containing trace amount of V

Provided is an Fe-based metal powder that is suitable for a process involving rapid melt-quenching and solidification, and that provides a shaped article having superior properties. The metal powder for shaping is made of an Fe-based alloy. The Fe-based alloy contains: Ni in an amount of 15.0% to 21.0% by mass; Co in an amount of 0% to 10.0% by mass; Mo in an amount of 0% to 7.0% by mass; Ti in an amount of 0.1% to 6.0% by mass; Al in an amount of 0.1% to 3.0% by mass; and the balance composed of Fe and incidental impurities.

Fe-based metal powder for molding

A Ni&#x2014;Cr&#x2014;Fe-based alloy brazing filler material to which Cu is added, and which has a low melting temperature, and is inexpensive and excellent in corrosion resistance and in strength, for use in manufacture of stainless-steel heat exchangers or the like, specifically, a Ni&#x2014;Cr&#x2014;Fe-based alloy brazing filler material, including, in mass %, Cr: 15 to 30%; Fe: 15 to 30%; Cu: 2.1 to 7.5%; P: 3 to 12%; and Si: 0 to 8%; and the balance being Ni and unavoidable impurities, wherein the total content of Cr and Fe is 30 to 54%, and the total content of P and Si is 7 to 14%.

Cu-added Ni&#x2014;Cr&#x2014;Fe-based alloy brazing material

The object of the present invention is to provide a compact for producing a sintered alloy which allows a sintered alloy obtained by sintering the compact to have improved mechanical strength and wear resistance, a wear-resistant iron-based sintered alloy, and a method for producing the same. The wear-resistant iron-based sintered alloy is produced by: forming a compact for producing a sintered alloy from a powder mixture containing a hard powder, a graphite powder, and an iron-based powder by powder compacting; and sintering the compact for producing a sintered alloy while diffusing C in the graphite powder of the compact for producing a sintered alloy in hard particles that constitute the hard powder. The hard particles contain 10% to 50% by mass of Mo, 3% to 20% by mass of Cr, and 2% to 15% by mass of Mn, with the balance made up of incidental impurities and Fe, and the hard powder and the graphite powder contained in the powder mixture account for 5% to 60% by mass and 0.5% to 2.0% by mass of the total amount of the hard powder, the graphite powder, and the iron-based powder, respectively.

Compact for producing a sintered alloy, a wear-resistant iron-based sintered alloy, and a method for producing the same

Mixed powder that contains first hard particles, second hard particles, graphite particles, and iron particles is used to manufacture a sintered alloy. The first hard particle is a Fe&#x2014;Mo&#x2014;Cr&#x2014;Mn based alloy particle, the second hard particle is a Fe&#x2014;Mo&#x2014;Si based alloy particle. The mixed powder contains 5 to 50 mass % of the first hard particles, 1 to 8 mass % of the second hard particles, and 0.5 to 1.0 mass % of the graphite particles when total mass of the first hard particles, the second hard particles, the graphite particles, and the iron particles is set as 100 mass %.

Manufacturing method of sintered alloy, compact for sintering, and sintered alloy

A Ni&#x2014;Fe-based alloy brazing filler material is provided comprising, in mass %, Fe: 21 to 40%; Cr: 10 to 30%; P: 7 to 11%; B: 0 to 5%; Si: 0 to 4.5%; V: 0 to 5%; Co: 0 to 5%; Mo: 0 to 5%; the balance being Ni and unavoidable impurities, wherein the mass ratio of Fe to P (Fe/P) is in a range of 2.6 to 5. The present invention provides a Ni&#x2014;Fe-based alloy brazing filler material having a low melting temperature and a superior corrosion resistance and comprising raw materials that are relatively easily available, for use in manufacture of stainless-steel heat exchangers or the like.

Ni&#x2014;Fe-based alloy brazing filler material

There are disclosed a laser clad valve seat raw-material powder superior in productivity, cladding property, wear resistance and finishing property, and a laser clad valve seat using the same superior in wear resistance. The row-material powder comprises a powder mixture comprising: 80 to 99% by weight of a Cu-based alloy powder comprising 0.5 to 5% by weight of B, 0 to 20% by weight of Ni, 0 to 10% by weight of Fe plus Co, 0 to 5% by weight of Si, 0 to 3% by weight of Al, and the balance Cu and unavoidable impurities; and 1-20% by weight of an Fe or Co based alloy powder having a Vickers hardness of 500 HV or higher and an average particle diameter of 50 to 200 &#x3bc;m of and comprising 5 to 40% by weight of Mo, 0 to 25% by weight of Cr, 0 to 5% by weight of Si, and the balance Fe or Co and unavoidable impurities.

Raw material powder for laser clad valve seat and valve seat using the same

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Himeji, Japan

Shingo Fukumoto