Other

Iljin Global Co., Ltd

Hana Technology Co., Ltd.

Oh Chul Kwon

Seon Ho Lee

Chirl Soo Shin

Sang Rae Kim

Ji Hyeon Yun

Jung Ho Song

Tae Bong Oh

Souk Woo Lee

Yoon Gil Choi

Seung Kyu Han

Seung A Han

Proposed are a system and a method for pressurizing an all-solid-state secondary battery at high temperature. More particularly, proposed are a system and a method for pressurizing an all-solid-state secondary battery at high temperature, in which a pre-process of high-temperature pressurization for maximizing a contact interface between a solid electrolyte and an active material and minimizing interfacial resistance is automated in such a manner that the fed secondary battery is automatically packed through a vacuum sealing unit and then pressurized at high temperature, thereby shortening a tact time and thus increasing process efficiency.

System and method for pressurizing all-solid-state secondary battery at high temperature

A bearing steel according to an embodiment of the present disclosure includes, as a chemical composition: 0.51 to 0.56 wt % of carbon (C); 0.30 to 0.55 wt % of silicon (Si); 0.60 to 0.90 wt % of manganese (Mn); 0.025 wt % or less (excluding 0 wt %) of phosphorus (P); 0.008 wt % or less (excluding 0 wt %) of sulfur (S); 0.01 to 0.20 wt % of chromium (Cr); 0.08 wt % or less (excluding 0 wt %) of molybdenum (Mo); 0.25 wt % or less (excluding 0 wt %) of nickel (Ni); 0.01 to 0.20 wt % of vanadium (V); 0.20 wt % or less (excluding 0 wt %) of copper (Cu); 0.003 wt % or less (excluding 0 wt %) of titanium (Ti); 0.01 to 0.05 wt % of aluminum (Al); 0.0015 wt % or less (excluding 0 wt %) of oxygen (O); 0.001 wt % or less (excluding 0 wt %) of calcium (Ca); and iron (Fe) and unavoidable impurities as a remainder.

Bearing steel and manufacturing method therefor

A billiard cue less bendable than a standard wood cue, which is manufactured by dividing a square lumber (), sawed from a wood material (), into a central member (), having a cross-shaped section in which longitudinal sides thereof are perpendicular to transverse sides lines thereof and end terminals thereof contact edges of the square lumber (), and peripheral members (and) cut off from the central member, and the peripheral members (and) are then bonded to the central member () so that the direction of the annual rings of the peripheral members (and) is opposite to the direction of the annual rings of the central member (), thereby offsetting stress applied to the central member () due to the orientation of the annual rings of the original square lumber (), and applied to the peripheral members (and), and allowing maintaining its straight state without deformation.

Billiard cue

Growing community of inventors

Seoul, South Korea

Oh Chul Kwon