FOR its outsourcing suppliers factory EVA FOAM MANUFACTURER round one technical parameters, especially the development of this standard.

2 Scope of application

All EVA FOAM MANUFACTURER factory wheels.

3 Standard

3.1 Dimensions

3.1.1 General foaming wheel diameter, width, size control in diameter ± 2mm. (But each requires classification error wheels supporting good)

3.1.2 foaming wheel width tolerance control in ± 2mm.

3.1.3 wheel diameter tolerances controlled within ± 0.1 between.

3.2 yaw

3.2.1 The roundness of the entire wheel at ± 1.5mm.

That is made to Φ8.2 meter aperture can be allowed between the Φ8.1-Φ8.3.

3.2.2 wheel deflection is controlled at the left and right within 2mm.

3.3 Hardness EVA wheels

Requirements under normal circumstances wheels EVA FOAM MANUFACTURER hardness around 550

3.4 degree of binding of the wheel

Speak tire inner frame which when combined with the strength of a specific test requirements below Schedule

3.5 Appearance

3.5.1 Bubble

Bubble diameter is not greater than the thickness of the original product 1/5, but the maximum does not exceed 2mm, 400mm2 following products

Products, more than two bubbles, 10000 mm2 less not more than 4, 1000 mm2 diameter above products

Not more than 3mm of not more than four.

3.5.2 impurities bump lack of glue

Deep or high thickness of the product does not exceed 1/5, but the maximum does not exceed 2mm, area not exceeding 2 mm2, 400 mm2

Products within the area, impurities, bump, not more than two missing glue, 10000 mm2 no more than the following

4, 1000 mm2 above products are not more than 3mm in diameter not more than four.

3.5.3 Trimming traces

Burr height and depth of cut loss shall not exceed 0.3mm.

3.5.4 parting them and shrink at the wrong side

Dislocation range does not exceed 0.5mm, 10mm more products, parting at the side of the phenomenon allowed to have kept shrinking.

3.5.5 sponge bubble can not have

3.5.6 mold marks

Yun meter has a slight mold marks, bump is not greater than 0.3mm, but not to exceed a total area of ​​1/20.

4 - Test methods

No. Item test equipment during the test

A yaw rate produced a percentile foot fixture put the wheels on the shaft, looking for a frame edge to zero, turn around the rim readings obtained after 1/2 that is unilateral yaw dial

2EVA hardness EVA hardness degree contacts EVA FOAM MANUFACTURER, Shi pushing hardness readings obtained.

3 tire

Uniting the wheels mounted on a frame placed on a treadmill, bench placed in the car for the road test weight 25kg 60H rims with EVA tire is not loose.