A belt for continuously variable transmission comprising a metal element (32) having a locking edge (40) between a principal plane (38) and an inclined plane (41) on the front side of the metal element in the forward running direction and a ring slot (35), to which a metal ring assembly (31) is press-fitted, between a main body part (34) and an ear part (36), wherein the proper range of the gravity center position of the metal element (32) is specified correctly so that a Vr < Vg < Vs is established where the speed of the locking edge (40) at an instantaneous time that the metal element (32) is moved away from a driven pulley is Vr, the speed of the gravity center (G) of the metal element (32) is Vg, and the speed of the ring slot (35) at the radial outermost end (351) is Vs, whereby the metal element (32) located at a chord part between the driven pulley and a drive pulley is prevented from being tilted and thus brought in mesh smoothly with the drive pulley.

Belt for continuously variable transmission

An Al-base alloy sputtering target consisting Ni and one or more rare earth elements, wherein there are 5.0×10 4 /mm 2 or more compounds whose aspect ratio is 2.5 or higher and whose equivalent diameter is 0.2 μm or larger, when a cross sectional surface perpendicular to the plane of the target is observed at a magnification of 2000 or higher.

Al-Ni-rare earth element alloy sputtering target

A cylindrical drum, which comprises a sheet of maraging steel with welded opposite ends, is severed into a plurality of rings of predetermined width, and the rings are rolled to a predetermined length, after which circumferential lengths of the rings are corrected. The rings are aged by placing the rings into an aging chamber, heating the aging chamber to a predetermined aging temperature, and keeping the rings at the predetermined aging temperature for a predetermined period of time. Thereafter, the rings are nitrided by transferring the rings from the aging chamber into a nitriding chamber which is disposed independently of the aging chamber and has been heated to a predetermined nitriding temperature, while maintaining the rings at the aging temperature, keeping the rings at the nitriding temperature in an atmosphere containing at least an ammonia gas for a predetermined period of time, and cooling the rings. The rings are fitted and stacked together into a laminated ring for use as a belt in transmitting power in a continuously variable transmission.

Method of manufacturing laminated ring and heat treatment apparatus for use in such method

The present invention relates to an Al—Ni—La—Si system Al-based alloy sputtering target including Ni, La and Si, in which, when a section from (¼)t to (¾)t (t: thickness) in a cross section vertical to a plane of the sputtering target is observed with a scanning electron microscope at a magnification of 2000 times, (1) a total area of an Al—Ni system intermetallic compound having an average particle diameter of 0.3 μm to 3 μm with respect to a total area of the entire Al—Ni system intermetallic compound is 70% or more in terms of an area fraction, the Al—Ni system intermetallic compound being mainly composed of Al and Ni; and (2) a total area of an Al—Ni—La—Si system intermetallic compound having an average particle diameter of 0.2 μm to 2 μm with respect to a total area of the entire Al—Ni—La—Si system intermetallic compound is 70% or more in terms of an area fraction, the Al—Ni—La—Si system intermetallic compound being mainly composed of Al, Ni, La, and Si.

Al-Ni-La-Si system Al-based alloy sputtering target and process for producing the same

The invention relates to an Al-Ni-La system Al-based alloy sputtering target comprising Ni and La, wherein, when a section from (1/4)t to (3/4)t (t: thickness) in a cross section vertical to a plane of the sputtering target is observed with a scanning electron microscope at a magnification of 2000 times, (1) a total area of an Al-Ni system intermetallic compound having an average particle diameter of 03 µm to 3 µm with respect to a total area of the entire Al-Ni system intermetallic compound is 70% or more in terms of an area fraction, the Al-Ni system intermetallic compound being mainly composed of Al and Ni; and (2) a total area of an Al-La system intermetallic compound having an average particle diameter of 02 µm to 2 µm with respect to a total area of the entire Al-La system intermetallic compound is 70% or more in terms of an area fraction, the Al-La system intermetallic compound being mainly composed of Al and La

Ai-ni-la system ai-based alloy sputtering target and process for producing the same

PROBLEM TO BE SOLVED: To obtain a uniform component distribution particularly in a large sized ingot by applying the spray forming method. SOLUTION: In the first process, the raw material is melted at the liquidus temperature or above of the allay so that a uniform molten metal is obtained. In the second process, the molten metal is atomized through gas atomization at a temperature preventing crystallization of a high melting point metal or an intermetallic compound (Al and high m.p. metal). In the third process, the atomized alloy is successively deposited and solidified while it is adhered in a molten or a semi-solidified state. As a result, component segregation of the ingot is small because the molten metal is atomized. In addition, with the rapid solidification, crystallized objects such as the high melting point metal or the intermetallic compound are uniformly and finely distributed in the ingot. Further, with the successive deposit and solidification in the molten or semisolidified state, there is little contamination by unrequired elements. Particularly, oxygen can be reduced. Furthermore, with the deposit in a semi-molten state, the density of the ingot is increased. COPYRIGHT: (C)1997,JPO

Manufacture of al base alloy ingot containing high melting point metal by spray forming method

PROBLEM TO BE SOLVED: To produce an A1 or A1 alloy sputtering target material that the generation of splashes is hard to occur when sputtering and to provide a method for producing it. SOLUTION: Relating to an A1 or A1 alloy sputtering target material that the maximum length of all inclusions existing therein is regulated to ≤20 μm and a method for producing an A1 or A1 alloy sputtering target material by a spray foaming method, the value of the outflow (Nm 3 ) of gas/the outflow (kg) of molten metal in a gas atomizing stage in the spray foaming method is regulated to ≥5 Nm 3 /kg. COPYRIGHT: (C)1999,JPO

Sputtering target material and its production

PURPOSE:To manufacture a seamless metallic belt in a specified shape and size, by applying a tube-spinning work to a hollow metallic blank pipe, by cutting this blank pipe in round slices, by applying a ring-mill work to thus obtained ring while controlling its circumferential length to a prescribed value. CONSTITUTION:The blank pipe (a) is cut into a proper length, and its one end is subjected to the spinning work to obtain a preform (b) provided with a hem, etc. This perform (b) is set to a mandrel 1 of a proper diameter and is pressed by rollers 2 which are moved along the axis of mandrel 1 while the mandrel 1 and the rollers 2 are both rotated. Hereby, the wall of preform (b) is thinned and a cylinder properly provided with an intermeidate wall thickness is prepared. This cylinder is cut in round slices of a proper breadth, and thus obtained ring (c) is rolled along its circumference by a king roller 3 and a work roller 4 under a proper rolling load. Thus obtained belt (d) having a final wall thickness is set around the stretching rollers 5, 6 and is stretched to the prescribed final circumferential length by adjusting the wheel base (r).

Manufacture of metallic belt

The sputtering target is manufactured by adjusting the ratio of the gas flow volume (Nm 3 )/molten liquid flow mass (kg) to 5 Nm 3 /kg or more in the gas atomizing step of the spray forming method using an Al or Al alloy sputtering target material in which the maximum length of all the inclusions is 20 μm or less.

Aluminum or aluminum alloy sputtering target and method for manufacturing the same

PURPOSE:To produce the blet of the target dimension quickly and with high accuracy by rolling with controlling the tension with using the relation between the plate thickness and plate width corresponding to each tension being found in advance according to the stock. CONSTITUTION:The stock 13 for metal made endless belt is wrapped freely in circulation bridging on a work roll 1 and tension roll 2. The work roll 1 is set up freely rotatably to a roll stand 4 and pinches the stock 3 by the upper and lower pair of pressing rolls. The tension roll 2 is supported freely rotatably by the supporting part 10 movable freely and the supporting part 10 is made freely in reciprocating movement by a tension cylinder 12 via a tension measuring apparatus 11. In case of the production, the target peripheral length is made after rolling to the target plate width with controlling the tension arithmetically by using the relation between the plate thickness and plate width against each tension being found in advance according to the stock. The target metal made endless belt can be thus produced quickly with high accuracy.

Teruyuki Takahara

Papers

Manufacture of al base alloy ingot containing high melting point metal by spray forming method

Sputtering target material and its production

Manufacture of metallic belt

Aluminum or aluminum alloy sputtering target and method for manufacturing the same

Production of metal made endless belt