Wuhan Iron and Steel Company Limited

Valeo Vision

Fang Fang

Tao Peng

Libo Pan

Xinping Mao

Rui Ge

Shuize Wang

Lijun Li

Kuanhui Hu

Qiang Hu

Anna Gu

Piao Zhang

Xiaofeng Du

Xiaoping Duan

Liangliang Fei

An optical assembly and a vehicle lamp are described. The optical assembly has a main exit direction, and includes a light source, a first light guide element and a second light guide element which are arranged in a superposed fashion in the main exit direction. The light source is allocated to the first light guide element, and the first light guide element has a first light in-coupling region and a first light out-coupling surface, the second light guide element has a second light in-coupling surface and a second light out-coupling surface, with the first light out-coupling surface facing the second light in-coupling surface. A light distribution structure is provided on at least a partial segment of at least one of the first light out-coupling surface and the second light in-coupling surface. The vehicle lamp includes the optical assembly described above.

Optical assembly and vehicle lamp

A press hardening steel by a thin slab and having a tensile strength of 1900 MPa or more includes following components by weight: C: 0.31-0.40%, Si: 0.36-0.44%, Mn: 1.6-2.0%, P&#x2264;0.006%, S&#x2264;0.004%, Als: 0.015-0.060%, Cr: 0.36-0.49%, Ti: 0.036-0.045% or Nb: 0.036-0.045% or V: 0.036-0.045% or a mixture of any two or more of the above in any proportion, B: 0.004-0.005%, Mo: 0.26-0.35%, and N&#x2264;0.005%. A method for producing the press hardening steel includes following steps: molten iron desulphurization; smelting and refining by an electric furnace or converter; continuous casting; descaling treatment before entering a soaking furnace; heating and soaking; high pressure water descaling before entering a rolling mill; hot rolling; cooling; coiling; austenitizing; die deforming and quenching.

1900 MPa grade press hardening steel by thin slab casting and directly rolling and method for producing the same

A press hardening steel by a medium thin slab and having a tensile strength of 1500 MPa or more, includes following components by weight percent: C: 0.21%-0.25%, Si: 0.26%-0.30%, Mn: 1.0%-1.3%, P&#x2264;0.01%, S&#x2264;0.005%, Als: 0.015%-0.060%, Cr: 0.25%-0.30%, Ti: 0.026%-0.030% or Nb: 0.026%-0.030% or V: 0.026%-0.030% or a mixture of any two or more of the above in any proportion, B: 0.003%-0.004%, Mo: 0.17-0.19% and N&#x2264;0.005%. A method for producing the press hardening steel includes following steps: molten iron desulphurization; smelting and refining by an electric furnace or converter; continuous casting; descaling treatment before entering a soaking furnace; hating and soaking; high pressure water descaling before entering a rolling mill; hot rolling; cooling; coiling; austenitizing; die deforming and quenching.

1500 MPa grade press hardening steel by medium thin slab casting and direct rolling and method for producing the same

Growing community of inventors

Hubei, China

Fang Fang