Automobile glass

1. Product description:
We fetch in the technology and equipments from international glass magnate¡ªPPG of USA and adopt mature process operating criteria to produce automobile wind shields.

2. Product characteristics:
(1) Light transmittance for transparent glass: 87.5%-91%
(2) Zebra angle: about 52 degree
(3) The thickness uniformity is excellent, and the minimum thickness deviation can be controlled within ¡À0.08mm.
(4) The accuracy of cutting size is high and can be controlled within ¡À1mm.
(5) The visible flaw is controlled strictly; the quality of all kinds of products can be provided according to the requirements of customers.
(6) Several methods of package can be provided; generally, there are standard boxes such as wood box, lattice wood box, end-cap wood box, glass package, L/U type iron frame. The usual package weight is 1.8-2.5T/box. We can also provide special package according to customer¡¯s requirements.

3. Product applying£º
It is applied to OEM or ARG glass for all kinds of automobiles and ships.
4. Product quality standards and criteria:

Glass Grade

Automobile Windshield Grade£¨BQV£©

Thickness Variance

Nominal Thickness£¨mm£©

Tolerance£¨mm£©

2.0-6.0

¡À0.20

Size Variance

Nominal Thickness£¨mm£©

Tolerance£¨mm£©

Length¡Ý3000

Length£¼3000

2.0-4.0

¡ª

¡À2

5.0-6.0

¡À3

¡À2

Wedge degree

Nominal Thickness(mm)£¨mm£©

Tolerance£¨ mm/m £©

2.0-3.0

¡Ü0.1

4.0-6.0

¡Ü0.15

Vertical Degree

¡Ü1.5 mm/ m£¬Maximum variance for jumbo size is less than 4mm, maximum diagonal variance is less than 4mm.

Warp

Nominal Thickness£¨mm£©

Acceptable Value£¨%£©

2.0-3.0

£¼0.2

4.0-6.0

¡Ü0.2

Optical Distortion

Zebra Angle

For 2.0-3.0mm laminated glass is 47¡ã£¬tempered glass is 50¡ã£»4.0-6.0 mm glass is 60¡ã

Wave

Under Inspecting of prescriptive zebra angle, no apparent optical distortion can be observed.

Discontinued Defects

Defect Size
£¨mm£©

Acceptable quantity of defects per square meter

Tempered Wind shield £¨BQV£©

Tempered Side and Back Windows £¨BQV£©

Laminated Windshield£¨BQV£©

¡Ü0.5

Unaccounted

Unaccounted

Unaccounted

£¾0.5 - ¡Ü0.8

¡ª

¡ª

1

£¾0.5 - ¡Ü1.0

1

2

¡ª

Tempered£¾0.8

Central Section

30mm away from the cutting edge

Laminated£¾1.0

0

1

Speck

Inspecting 1-meter away from the front of the glass, no apparent speck can be perceived. Otherwise deal it with discontinued defect criteria.

Stream, crack and scratch

Central Section

30mm away from the cutting edge.

Can¡¯t be observed with eyes.

Bigger than 5.0mm is not acceptable.

Cross section defect

Size of chip, notch, rib, and extra or absent angle is smaller than glass thickness.

Bloom

After tempering, no bloom is produced.

Comprehensive Appearance

No intensive defects exist.

4. Product specification£º
(1) Thickness: 2mm¡ª6mm¡£
(2) Specific specifications can be manufactured according to the client¡¯s requirements.
6. Physical performance:


Item

Value

Reflectance

1.52

Specific heat

753.62J/(kg¡¤K)

Softening point

720~730¡æ

Heat expansion coefficient

8.5¡Á10£­6/¡æ

Density

2500kg/m3

Yung module

>7¡Á104 Mpa

Bend intensity

90Mpa

7¡¢Transmittance

Thickness
(mm)

National standard (%)

Yumei glass

2

89

90

3

88

90

4

87

89.6

5

86

88

6

84

86

 

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