Motorcycle catalytic converter

Item

Unit

StandardValue

Actualmeasured value

Result

Inspectionstandard

SiO2

-

50±2

48.40

Eligible

QB/T 2578-2002

Al2O3

-

35±2

34.65

Eligible

Fe2O3

-

-

0.44

-

CaO

-

-

1.49

-

Mgo

-

13±2

12.78

Eligible

Outlook quality

-

-

Meetthe requirement

Eligible

XB/T 505-2003

Crack in the surface

-

Novisible cracks available in the extremity and the flank

-

-

Defect in the holewall

-

Couldnot exceed 0.1% extremity

-

-

Damage of edge

-

Foreach 28mmX18mmextremity, there should be less than 3 places of damage

-

-

Chiseled hole in thesurface

-

Thedepth ≤ 1.6mm,the whole area of the chiseled hole ≤ 300mm2,and the girth of the hole ≤ 6.4mm2.

-

-

Rate of blocking hole

-

≤1.0%

-

-

Dimension tolerance

mm

Length≤100 permitted tolerance±1.0

Meetthe requirement

Eligible

Thermal expansioncoefficient

℃

≥15.0X10-7

14.6X10-7

Eligible

Inteneratetemperature

℃

≥1360

1364

Eligible

Heat and librationresistance

℃

>650

650℃-8℃ Never crack in one time

Eligible

Cubage density

g/cm3

0.45-0.55

0.50

Eligible

Water absorption

%

>16.5,tolerance±2.0

16.85

Eligible

Compressive strength

kg/cm2

-

-

-

Axes A

-

≥106

143.8

Eligible

Axes B

-

≥14.5

20.5

Eligible

Axes C

-

≥1.7

3.2

Eligible

Cool libration test

-

-

Underthe frequency of 100±50H 2 , after being librated for 3 hours, there aren'tany damage and cracks

-

Testresult