Front windows of high-speed trains, subways, and locomotives

Performance Items

Process characteristics

Performance metrics

Electric heating performance

The equipment is independently developed and manufactured, and can evenly distribute the electric heating wire as thin as 0.012mm in the product in the form of waves.

Defrost and fog

Temperature control range: 25-40°C (customers can specify the temperature control range)

Heating power: 450-550W/㎡

Dielectric strength: <5mA

Insulation resistance: >50MΩ

Warming uniformity: <10°C

Impact resistance

The loading capacity and loading size of the chemical steel furnace independently developed and manufactured by Mingdun Company are the largest in the country, and the chemical tempering ion replacement technology is used to form a stress layer on the surface of the glass, which greatly improves the impact and anti-penetration performance of the glass.

Stress value: ≥550MPa

Stress layer depth: ≥20μm

Gravel resistance

Bird impact resistance

Splash resistance

Using advanced film layer materials and special processing technology, it can be treated with anti-splash treatment on the surface of the front window glass and security products, which can ensure that the product will not produce foreign matter splashing such as slag in the event of rupture, and ensure the safety of users.

No splashing after impact test

Optical performance

The unique hyperboloid, large arch height, multi-layer glass front window glass hot bending process and mold production technology ensure the excellent optical performance of the front window.

the light transmittance is not less than 80%;

Light distortion: 2′ in area

Secondary image deviation: 15′ in area A< 25′ in area < B

Haze< 2.5%