Testing Department

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Equipment Modle QTY Recent Equipment calibration time
Black and white density meter CY-480A 1 2015.5.25
Ultrasonic thickness gauge UT300 1 2015.6.29
Digital coating thickness gauge TT220 1 2015.6.29
Digital temperature controller JP-2(0-100) 1 2015.6.29
Caliper table C1010196196 1 2015.6.29
X ray detector XXG-2505 1 2013.7
Magnetic particle detector CDX-ΙΙΙ 1 2013.9
LED view HQD-A 1 2013.7.
Film drying box LP-2 1 2013.7
Constant temperature processing machine 4 1 2013.7
Radiation inspection instrument DM-5200 1 2013.7.
Ultraviolet temperature measuring instrument STMX3i 1 2013.9.
Water pressure tank   1 2013.9
Test procedure for cooler tube
1  Material certificates should be provided for material, and dimension shall be in accordance with the standard tolerance.                                                                              
Allowable deviation for copper tube dimension
Copper tube material dimension(mm) Diameter Thickness Copper tube material specification(mm) Diameter Thickness
φ16×0.5 ±0.05 ±0.04 φ15.88×0.4 ±0.05 ±0.03
φ16×0.6 ±0.05 ±0.04 φ15.88×0.5 ±0.05 ±0.04
φ16×0.7 ±0.05 ±0.05 φ15.88×0.6 ±0.05 ±0.04
φ16×0.75 ±0.05 ±0.05 φ15.88×0.7 ±0.05 ±0.05
φ16×1 ±0.05 ±0.05 φ15.88×0.75 ±0.05 ±0.05
φ16×1.2 ±0.05 ±0.05 φ15.88×1 ±0.05 ±0.05
φ16×1.5 ±0.05 ±0.05 φ15.88×1.2 ±0.05 ±0.05
      φ15.88×1.5 ±0.05 ±0.05
Continuation Sheet
Copper tube material dimension(mm) Diameter Thickness Copper tube material specification(mm) Diameter Thickness
φ13.5×0.4 ±0.05 ±0.03

φ12.7×0.4

±0.05 ±0.03
φ13.5×0.5 ±0.05 ±0.04

φ12.7×0.5

±0.05 ±0.04
φ13.5×0.6 ±0.05 ±0.04

φ12.7×0.6

±0.05 ±0.04

φ13.5×0.7

±0.05 ±0.04

φ9.52×0.35

±0.05 ±0.03

φ13.5×1

±0.05 ±0.04

φ9.52×0.4

±0.05 ±0.03
     

φ9.52×0.5

±0.05 ±0.04
Measure the dimension with caliper, and make record on Tube Expansion Record.

2 Inspection for aluminum foil bore.
Punching diameter of aluminum foil is inspected by Go-No Go Fixed Gauges. See specification sheet as below.
Specification Sheet in Go-No Go Fixed Gauges for aluminum foil fin.
Item  Aluminum Fin Bore Diameter  Diameter in Go Gauges  Diameter in No Go Gauges
1 ¢16.35 ¢16.30 ¢16.40
2 ¢16.23 ¢16.18 ¢16.28
3 ¢13.85 ¢13.80 ¢13.90
4 ¢13.05 ¢13.00 ¢13.10
5 ¢9.87 ¢9.82 ¢9.92
Measure the dimension with caliper, and make record on Tube Expansion Record.

3.Expansion Tube Head
Expansion tube head specification sheet for copper tube expansion.
 Copper tube material specification(mm)   Expansion  head size(mm)  Copper tube material specification(mm)  Expansion  head size(mm)
φ16×0.5 φ15.5 φ15.88×0.4 φ15.58
φ16×0.6 φ15.3 φ15.88×0.5 φ15.38
φ16×0.7 φ15.1 φ15.88×0.6 φ15.18
φ16×0.75 φ15 φ15.88×0.7 φ14.98
φ16×1 φ14.5 φ15.88×0.75 φ14.88
φ16×1.2 φ14.1 φ15.88×1 φ14.38
φ16×1.5      φ14.1 φ15.88×1.2 φ13.98
    φ15.88×1.5      φ13.38
Continuation Sheet
Copper tube material specification(mm) Expansion  head size(mm) Copper tube material specification(mm) Expansion  head size(mm)
φ13.5×0.4 φ13.2 φ12.7×0.4 φ12.4
φ13.5×0.5 φ13 φ12.7×0.5 φ12.2
φ13.5×0.6 φ12.8 φ12.7×0.6 φ12
φ13.5×0.7 φ12.6 φ9.52×0.35 φ9.32
φ13.5×1 φ12 φ9.52×0.4 φ9.22
    φ9.52×0.5 φ9.02

4.Tube expanding process test

5. Tube expansion force detection
Calculation formula of expansion ratio:
H=(d1-d2-δ)/d3×100%
d1,d2——tube inner diameter after & before expansion
d3——tube inner diameter before expansion
δ——difference between tube inner diameter and outer diameter

6. Appearance Inspection      
Product Catalog