Houlaisha Co., Ltd.

Jfe Steel Corporation

Shinichi Nagai

Shigeji Higashiguchi

Yusuke Vincent Fujii

Naoki Kikuchi

Yuji Miki

Yoshie Nakai

Naoya Shibuta

Takahiko Maeda

A molten steel refining method includes throwing a powder to molten steel while heating the powder with a flame formed by combustion of a hydrocarbon gas at the leading end of a top blowing lance. The lance height of the top blowing lance (the distance between the static bath surface of the molten steel and the leading end of the lance) is controlled to 1.0 to 7.0 m, and the dynamic pressure P of a jet flow ejected from the top blowing lance calculated from equation (1) below is controlled to 20.0 kPa or more and 100.0 kPa or less. P=&#x3c1;&#xd7; U/2 . . . (1) wherein P is the dynamic pressure (kPa) of the jet flow at an exit of the top blowing lance, &#x3c1;the density (kg/Nm) of the jet flow, and U the velocity (m/sec) of the jet flow at the exit of the top blowing lance.

Method for refining molten steel in vacuum degassing equipment

A mark-fabric material includes a mark-fabric including, in the following sequence, microfibers, an adhesive layer including a thermoplastic resin having a melt flow rate of 100 g/10 min or less, and a release sheet.

Mark-fabric material and mark forming method

The invention provides a cloth material for marking including, in this order, a label cloth formed from a fiber, an intermediate layer including a resin having a softening point of 180&#xb0; C. or higher, a transfer adhesive layer including a thermoplastic resin having a softening point of 170&#xb0; C. or lower and having a melt flow rate of 100 g/10 min or lower; and a release sheet.

Cloth material for marking and method of forming mark

A cloth material for marking including: a label cloth made of a white cloth formed of a fiber containing a component having affinity for a sublimation dye; an intermediate layer disposed on a rear surface of the label cloth, the intermediate layer including a synthetic resin which has affinity for the component of the label cloth and which has a melting point higher than a sublimation temperature of the sublimation dye; a transfer adhesive layer including a hot-melt thermoplastic synthetic resin and disposed on a surface of the intermediate layer; and a sheet of release paper disposed on a surface of the transfer adhesive layer. The intermediate layer is formed and closely fixed on the rear surface of the label cloth by laminating or coating. The transfer adhesive layer is also formed by laminating or coating. Desired colors, patterns and/or figures are transferable from transfer paper printed with a sublimation dye onto a surface of the cloth material for marking that has a transfer adhesive layer on its rear surface.

Growing community of inventors

Tokyo, Japan

Shinichi Nagai