Taiyo Nippon Sanso Corporation

Hitachi Construction Machinery Co., Ltd.

The Lion Fat and Oil Co. Ltd.

Toyoyuki Sato

Tomoaki Sasaki

Shuhei Kanemaru

Yasuyuki Yamamoto

Katsunori Wada

Masayoshi Nakamura

Hikaru Yamamoto

Hiroki Amano

Teruo Magari

Toru Nakajima

Masayuki Nagahori

Yusuke Yamaguchi

Hirotaka Kamikihara

Kazumichi Hosoya

Takashi Takeda

Takashi Kato

An object of the present invention is to provide a method for manufacturing a metal printed object that can reduce the generation of sputters, and the present invention provides a method for manufacturing a metal printed object in which, in the presence of a shielding gas supplied around metal powder in a chamber, heat is supplied to the metal powder using energy rays to form a metal layer and laminate the metal layer, wherein the mass per unit volume of the shielding gas at a temperature of 25° C. and a pressure of 0.1 MPa is 1.30×10g/cmor less.

Method for manufacturing metal printed object

A hybrid welding method capable of improving arc stability and improving the welding speed and the welding efficiency is provided. A hybrid welding method includes generating a TIG arc on a leading side in a welding direction and generating a MIG arc on a trailing side in the welding direction to weld a base metal, in which a TIG current is set to be higher than a MIG current so as to continuously generate arcs in a TIG electrode and a MIG electrode, and an absolute value of a distance from an intersection between a central axis of the TIG electrode and a surface of the base metal to an intersection between a central axis of the MIG electrode and the surface of the base metal is 20 mm or less.

Hybrid welding method and welding torch for hybrid welding

Provided is a plasma arc welding method for continuously welding a welding target part of a welding workpiece while forming a keyhole weld on the welding target part of the welding workpiece using a plasma arc. A pulse current is used for a welding current, and the pulse frequency of the pulse current is controlled so as to be a frequency that is synchronized with a weld pool (P) during the welding. With this approach, vibration of the weld pool during keyhole welding can be controlled so as to synchronize with the pulse frequency of the pulse current. As a result, when the plasma arc keyhole welding is performed, a stable penetration bead having a desired height can be reliably obtained without hanging or irregularity.

Plasma arc welding method and plasma arc welding device

The object of the present invention is to provide a method for cutting with gas which uses a cutting tip including a preheating hole for forming a preheating flame with a fuel gas and an oxygen gas for preheating, and an oxygen gas hole for cutting a workpiece by injecting oxygen gas for cutting, and which can decrease an amount of hydrogen gas used by supply a fuel gas to the preheating hole, which is appropriate in both heating and cutting the workpiece, and an apparatus for cutting with gas, and the present invention provides an apparatus for cutting with gas () which supplies an oxygen gas, and a fuel gas to a cutting tip () including a preheating hole () and an oxygen gas hole for cutting (), wherein the apparatus () includes a supply circuit for oxygen gas (), a supply circuit for hydrogen gas (), a supply circuit for hydrocarbon-based gas (), and a gas supply control means (), and the gas supply control means () can alter a ratio of the hydrogen gas and the hydrocarbon-based gas which are supplied to the preheating hole in a case of heating the workpiece and a case of cutting the workpiece.

Method for cutting with gas and apparatus for cutting with gas

Detergent compositions containing, as two essential ingredients, the alkaline earth metal salts of anionic surface-active agents having a sulfonic acid group or a sulfuric acid ester group and quaternary ammonium salt type cationic surface-active agents are presented. These detergent compositions can exhibit satisfactory fabric-softening effects for fabrics, without causing a substantial decrease in the cleansing effect.

Detergent composition

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Tokyo, Japan

Toyoyuki Sato