Aisin Seiki Kabushiki Kaisha

Other

National Industrial Research Institute of Nagoya

Yasuhiro Enya

Shoichi Kume

Yoshinori Nishida

Haruo Yoshida

Kazutaka Suzuki

Akinari Ishikawa

Takashi Sakurai

Masaki Kobayashi

Tomohiro Saeki

Masanori Suzuki

Satoru Hosomi

Makoto Takeuchi

Yoshikazu Ibayashi

Masaru Matukura

Tatsuya Hara

Shigeru Anada

Kenji Gotoh

Francois Coderre

A torque fluctuation absorbing apparatus including a limiter mechanism includes: a disc member connected to one of the driving-side member and the driven-side member, a first plate and a second plate connected to the other one of the driving-side member and the driven-side member; a frictional member fixed to the disc member and interposed between the first plate and the second plate, the frictional member including a frictional surface slidably in contact with the first and second plates. The frictional member includes a fibrous substrate and is formed with a plurality of grooves at the frictional surface. A minimum dimension between two adjacent grooves from among the plurality of grooves is designed to be greater than or equal to 2 mm and smaller than or equal to 7 mm.

Torque fluctuation absorbing apparatus

A vane, a valve timing control device at least including a vane, or a sliding member include at least one of chromium and manganese with 10&#x2013;20 weight %, and carbon with 0.70 weight % or less wherein the vane is formed by nitriding treatment.

Vane, valve timing control device, and sliding member

A nodular graphite cast iron is provided, having a pearlite matrix, with high strength and high toughness. The nodular graphite cast iron consists essentially of, by weight %: from 3.0 to 4.6% of carbon; from 1.6 to 2.5% of silicon; from 0.2 to 0.6% of manganese; from 0.02 to 0.05% of magnesium; from 0.0004 to 0.090% of zirconium; at least one of tin and copper such that &#x3b1; ranges from 0.01 to 0.06% where &#x3b1; indicates a tin conversion amount defined by a summation of a weight % of the tin and 0.1&#xd7; a weight % of the copper; and the balance of iron and inevitable foreign matters.

Nodular graphite cast iron with high strength and high toughness

The present invention provides a cubic boron nitride-based sintered material excellent in durability and usable for a cutting tool material capable of carrying out high speed cutting of at least a high grade cast iron represented with a Ni-Resist cast iron and an austempered cast iron and having a long life. The present invention further provides a method for manufacturing the cubic boron nitride-based sintered material. The method for the production of a cubic boron nitride-based sintered material includes preparing a starting mixture by mixing particles of cubic boron nitride with a binding powders based on the system of TiCN, Si N , Al O , and Cr N, wherein x varyies from 1 to 2.7; and subjecting the starting mixture to a sintering process under pressure and at the same time at a high temperature; and recovering a sintered product.

Cubic boron nitride-based sintered material and manufacture thereof

Sintered cermet materials far tools such as cutting tools, which are excellent in heat resistance, wear resistance and fracture resistance, are inexpensive, and have long life time, and a method for producing such sintered cermet materials. The sintered cermet materials for tools are composed of sintered bodies which are obtained by preparing a mixed powder containing powders of TiCN, Si N , Al O , CrxN (x&equals;1-2.7 and ZrN, at least one powder of W and WC, and at least one kind of metal powder selected from the group consisting of Co, Ni, Ta and Mo, and sintering the mixed powder .

Sintered cermet material for cutting tools and method for producing the same

The purpose of the present invention is to provide a titanium nitride aluminum based sintered material having excellent durability and able to be cheaply produced and cut spheroidal graphite cast iron at high speed and be used as a cutting tool material having a long life, and a method of production the same. The present invention resides in a production method of a titanium nitride aluminum based sintered material characterized in that powder of Ti.sub.(1-x) Al.sub.x N (x=0.05.about.0.70) is sintered. Said x is preferably set to a range from 0.05 to 0.15 or from 0.50 to 0.70. 0.2 to 11.1% of an additive by volume constructed by TiO.sub.y (y=1.about.2) and/or Al.sub.2 O.sub.3 is preferably externally added to the above titanium nitride aluminum based sintered material.

Titanium nitride aluminum based sintered material and its production

The purpose of the present invention is to provide a cubic boron nitride based sintered material having excellent durability and capable of cutting at least spheroidal graphite cast iron at high speed and usable in a cutting tool having a long life, and a production method of this cubic boron nitride based sintered material. The present invention resides in a production method of a cubic boron nitride based sintered material characterized in that a mixing raw material is produced by mixing powder of Ti.sub.(1-x) Al.sub.x N(x=0.05.about.0.70) and the powder of a cubic boron nitride, and is next sintered. A compounding ratio of the above mixing raw material is preferably set such that this mixing raw material includes 10 to 90% of the above Ti.sub.(1-x) Al.sub.x N(x=0.05.about.0.70) by volume and 10 to 90% of the above cubic boron nitride by volume.

Cubic boron nitride based sintered material and its producing method

Growing community of inventors

Kariya, Japan

Yasuhiro Enya