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Inspection Standard of Ceramic Honeycomb

Honeycomb ceramic block quality control procedures

MARKING

DEFINITION

TOLERANCES QUALITY

A

B

C

100% OF PIECES CHECKED VISUALLY

1.0--VISUALS

 

 

 

 

 

 

 

 

1.1

Edge and Corner chips

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.2 Face and Side cracks

 

 

 

 

 

 

 

 

 

 

Edge Chip:

 

 

Corner Chip:

 

 

Rectangular to way to extrusion:

Total length of cracks

 

 

Parallel to way of extrusion:

Total length of cracks

 

 

Crack is defined with a width of 0.2mm

Crack is defined with a depth of 10mm

 

 

 

 

 

 

 

 

Max. 1 chip

Length: 10mm

Width: 10mm

Depth: 10mm

 

 

 

 

 

 

 

 

 

 

 

 

 

Max. 1 crack

X= Max. 1mm

L22% of UL

 

 

 

 

 

 

 

 

Max. 1 crack

X= Max. 1mm

L25% of UQ

 

 

 

 

 

 

 

 

Max. 2 chips

Length: 15mm

Width: 15mm

Depth: 15mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max. 2 cracks

X= Max. 1mm

L33% of UL

 

 

 

 

 

 

 

 

 

Max. 2 cracks

X= Max. 1mm

L50% of UQ

 

 

 

 

 

 

 

 

Max. 3 chips

Length 30mm

Width: 30mm

Depth: 30mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max. 3 cracks

X= Max. 6mm

L66% of U

 

 

 

 

 

 

 

 

 

Max. 3 cracks

X= Max. 6mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.3 Web and Cell defects

 

Missing walls are not allowed to be situated side by side; defect is defined with a depth of 10mm

Missing Cells

 

Plugged Cells

 

 

Deformed Cells

 

 

 

Swollen Web

 

 

Swollen Center Post

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sum of all web and cell defects which is max. allowed:
  Honeycomb 2525 Max. 3 Max. 5 Max. 10
  Honeycomb 4040 Max. 5 Max. 10 Max. 15
  Honeycomb 5050 Max. 5 Max. 10 Max. 15
       

 

MARKING

DEFINITION

TOLERANCES QUALITY

TEST

INSTRUMENT

A

B

C

2.0 – DIMENSIONALS

 

 

 

 

2.1 Entry(Sag)

 

 

 

 

Max. difference of a straight line

drawing of the sides

 

 

 

 

 

Max. 1 mm

 

 

 

 

 

Max.1.5mm

 

 

 

 

 

Max. 5mm

 

 

 

 

 

Tentacle gauge

Ruler

 

 

 

 

 

2.2

Bend

 

 

 

 

  Max. difference of a straight line

  drawing of the length

 

 

 

 

 

Max. 2 mm

 

 

 

 

 

Max. 3mm

 

 

 

 

 

Max. 5mm

 

 

 

 

 

Tentacle gauge

Plate

 

 

 

2.3 Dimensions

 

 

 

 

 

Measurement of a honeycomb

rectangular to way to extrusion

 

Measurement of a honeycomb

parallel to way of extrusion

 

+2mm

-0mm

 

 

+2mm

-1mm

 

+2mm

-1mm

 

 

+3mm

-3mm

 

+6mm

-3mm

 

 

+6mm

-6mm

 

Slide caliber

 

 

 

Slide caliber

The Tolerance Quality of 400 CPSI Honeycomb Ceramic

Items

  Tolerance

Wall Thicknessmm

0.05

Physical Dimensionmm

< 100

1.0

100

1.5

Parallelismmm

1.5

Degree of Circularitymm

<100

1.5

100

2.0

Verticalmm

Not more than 2% product height

Cracks

Visible cracks not allowed

 

Web and Cell Defects

Missing walls are not allowed to be situated side by side, the missing walls are not more than 0.1% the total walls

 

Face and Side Defects

Defect is defined with a length of >2mm the number of defects of 1042mm are not allowed more than 3


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