Pre-coated Aluminium Fin stock
Author: Time:2023-05-17
The range of production includes all types of coating on Aluminium foils including Hydrophilic,hydrophobic etc.The coating helps to increase the efficiency and life of the Airconditioner.
Aluminium fin is the main component of the heat exchanger of an airconditioner.In the process of heat exchange,moisture in the air is condensed on the surface of the Aluminium fin to form water droplets,which block the flow of air between two fins.
This reduces the heat exchanging capacity and efficiency of the heat exchanger.
A Hydrophilic pre-coated fin does not allow formation of droplets on the fin surface thereby allowing better heat transfer and increased efficiency.
Precoated finstock has distinct advantages over conventional(bare) finstock because of its hydrophilic or water shedding properties and excellent corrosion resistance.
These properties help to produce more compact and quieter air conditioners since efficiency and cooling capacity is increased.
Specs of Aluminium Fin Stock
| Specs(mm) | Tolerance(mm) | Remark | |
|---|---|---|---|
| Thickness | 0.105/0.115 | +0-0.004 | |
| Thickness | 0.095, 0.125 | ±0.003 | |
| Width |
355,390,405,465,470,540,695, 925,1066,416,490,902,1070 |
±1.0 | |
| Surface Roughness | 0.3--0.5um | ±2 | |
| Inner Diameter | 152 | ||
| Outer Diameter | 800--1100 |
(Suitable for: 540mm, 695mm, 902mm, 925mm,1066mm, 1070mm) |
Coil weight less than 2 tonne |
| 700--1000 |
(Suitable for: 355mm,390mm, 405mm,465mm,470mm) |
Coil weight less than 2 tonne |
| Alloy | Temper |
Tension Strength(MPa) |
Elongation(%) |
Thickness tolerance |
Width Tolerance |
Cupping Value | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 8011 | H22 | 110-120 | ≥20％ | ±3％ | ±1mm | ≥6 | |||||
| 8011 | H24 | 120-130 | ≥18％ | ±3％ | ±1mm | ≥6 | |||||
| 3102 | H26 | 130-140 | ≥15％ | ±3％ | ±1mm | ≥5.5 | |||||
|
Normal Hydrophilic Aluminium foil (Blue) |
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| Coated Laquer |
Single Side Film Thickness |
Hydrophilic Film Thickness of Single Side |
Anticorrosive Coating |
Hydrophilic Angle |
Alkali Resistance |
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| Hui Gu | 0.8-1.4ｕm | 0.14-0.27ｕm | 0.66-1.13ｕm | ≤10° |
10％nNaOH 20minutes at 25℃ |
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|
High Corrosion of Hydrophilic Aluminium foil( Golden): |
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|---|---|---|---|---|---|
| Coated Laquer |
Single Side Film Thickness |
Hydrophilic Film Thickness of Single Side |
Anticorrosive Coating |
Hydrophilic Angle |
Alkali Resistance |
| Hui Gu | 1.27-1.86ｕm | 0.14-0.27ｕm | 1.13-1.59ｕm | ≤10° | 10％nNaOH 20minutes at 25℃ |
DELIVERY TECH-SPECIFICATION
PRODUCT NAME : ALUMINIUM FIN STOCK (BARE AND HYDROPHILIC)
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1. HYDROPHILIC PRE-COATED Aluminium FIN STOCK
2. BARE Aluminium FIN STOCK
3. APPLICATION RANGE
THIS SPECIFICATION APPLIES FOR HEAT-EXCHANGERS Al FIN STOCK OF AIR CONDITIONERS.
4. CHEMICAL COMPOSITION
4. CHEMICAL COMPOSITION
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| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Others | Al | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Tag No. | Per | Total | |||||||||
| 8011 | 0.50 0.9 | 0.6 1.0 | 0.10 | 0.20 | 0.05 | 0.05 | 0.10 | 0.08 | 0.05 | 0.15 | Balance |
| Remarks in the table, if there is upper and lower limit of the content, it is alloy element if the content is a single value, Aluminium will be minimum limit other impurity element will be maximum limit. | |||||||||||
| 5. MECHANICAL PERFORMANCE | |||||
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ALLOY NO |
TEMPER
|
THICKNESS |
TENSILE
STRENGTH
(Mpa) |
ELONGATION
(%) |
ERICHSEN (mm) |
| 8011 | O | 0.095-0.130 | 85-105 | ≥18 | ≥6.0 |
| 8011 | O | 0.130-0.160 | 85-105 | ≥19 | ≥6.5 |
| 8011 | O | 0.160-0.200 | 85-105 | ≥20 | ≥6.8 |
| 8011 | H22 | 0.100-0.130 | 100-130 | ≥17 | ≥6.0 |
| 8011 | H22 | 0.130-0.160 | 100-130 | ≥18 | ≥6.2 |
| 8011 | H22 | 0.160-0.200 | 100-130 | ≥19 | ≥6.5 |
| 8011 | H24 | 0.100-0.130 | 115-140 | ≥15 | ≥5.5 |
| 8011 | H24 | 0.130-0.160 | 115-140 | ≥16 | ≥6.0 |
| TESTING METHODS GB/T228-2002 YS/T419-2000 |
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6. COATING PERFORMANCE
6.1 COATING STRUCTURE
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HYDROPHILIC LAYER
ANTI-CORROSIVE LAYER
BASE MATERIAL
ANTI-CORROSIVE LAYER
HYDROPHILIC LAYER
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6.2 COATING TYPES
(1) FILM WITH CORROSIVE RESISTANCE ORGANIC RESIN
(2) HYDROPHILIC FILM ORGANIC RESIN
6.3 COATING PERFORMANCE
6.3 COATING PERFORMANCE
| SERIAL NO | ITEMS | TESTING METHODS | RESULTS |
|---|---|---|---|
| 1 |
SUPERFICIES AND APPEARANCE |
BY EYES |
GOLDEN, BLUE BLACK |
| 2 | FILM THICKNESS |
CALCULATED FROM WEIGHT OF FILM |
2—3µm |
| 3 |
ORIGINAL HYDROPHILIDICY |
TEST HYDROPHILICITY DIRECTLY | ≥8mm |
| 4 |
INITIAL HYDROPHILICITY |
DIP IN VAPORING OIL 3min (20±15)→VERTICAL SITUATION 7min AT NORMAL TEMPERATURE→ 210±10 DRY 2min →DIP IN PURE WATER 10min →DRY 10min/CYCLE AT NORMAL TEMPERATURE, 10CIRCLE→TEST HYDROPHILICITY. |
≥6.0mm |
| 5 | SALT-SPRAYB RESISTANCE |
JIS-Z-2371 (5%×35×72) JIS-Z-2371 (5%×35×72HOURS)
CONTINUOUS SALT SPRAY
|
≥R.NO9.5 |
| 6 | HEAT RESISTANCE |
A : 200 ×10MINS
B : 400 ×10MINS
|
A : NO CHANGES
B : TURNS LIGHT BROWN
|
| 7 | OIL RESISTANCE | DIP IN PRESS OIL 24HOURS→WASH IN FLOWING WATER→PEELTEST | NO DELAMENATION |
| 8 | ADHEWSIVE FORCE |
A. BENDING 180°
B. PEEL TEST
C. ERICHSEN VALUE=5MM
|
100% NO DELAMINATION |
| 9 | ODOR | BY NOSE AFTER DIPPING IN WATER AND DRYING NATURALLY | NO ODOR |
7.
7.1 SIZE AND TOLERANCE
| THICKNESS | WIDTH | ||
| SIZE | TOLERANCE | SIZE | TOLERANCE |
| 0.095-0.20 | ±5% | 150-1400 | ±1 |
7.2 outer diameter of tube core and correspondence roll
UNIT : mm
| Tube core material : | Aluminium or steel |
| Tube core inner diameter : | 150, 152.4 , 200 |
|
correspondingφ150 φ152.4 φ200tube core, roll maximum outer diameter : |
1200 |
8. SUPERFICIES AND APPEARANCE
1. CLEAN NO FISH TAILS FOLDING SCRATCH AND OTHER DEFAULTS.
2. NO ADHENSIVE THINGS ON THE SURFACE NO COLOR CHANGES.
3. FLAT SIDES SHOULD BE SMOOTH AND NO CRACKS ON SIDES.
4. NO APPARENT DIFFERENCE OF COLOR BETWEEN COILS OR BETWEEN LAYERS OF EACH COIL.
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9. DEMANDS OF PACKAGE AND OTHERS
STANDARD EXPORTING PACKAGE USING FUMIGATED WOODEN PALLET.
10. STORAGE CONDITIONS WARE HOUSE FOR LONG-TIME STORAGE SHOULD MEET THE REQUIREMENTS AS IT FOLLOWS
1. CLEAN DRY HUMIDITY ≤65% NO CORROSIVE GAS.
2. ABLE TO PREVENT RAIN SNOW AND WATER FROM PERMEANCE.
3. NO OTHER CHEMICAL ACTIVE MATERIALS OR HUMID MATERIALS.
11. TAB THE TAB OF EACH COIL SHOULD INCLUDE THE CONTENTS AS IT FOLLOWS
1. PRODUCT NAME
2. ALLOY & TEMPER
3. PRODUCT SPECIFICATION
4. LOT NO
5. NET WEIGHT
6. PACKAGING DATE
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12. QUALITY CERTIFICATE FOLLOWING CONTENTS SHOULD BE INDICATED IN QUALITY CERTIFICATE.
1. PRODUCT NAME
2. ALLOY & TEMPER
3. SPECIFICATION
4. TENSILE STRENGTH
5. ELONGATION
6. ERICHSEN
7. QUALITY OF COATING APPEARANCE AND PERFORMANCE
8. LOT NO
9. NET WEIGHT
13. OTHERS THE ITEMS INCLUDED IN THE SPECIFICATION SHOULD BE OBSERVED BY TWO PARTIES ANY PROBLEM SHOULD BE SETTED BY NEGOTIATION.
13. OTHERS THE ITEMS INCLUDED IN THE SPECIFICATION SHOULD BE OBSERVED BY TWO PARTIES ANY PROBLEM SHOULD BE SETTED BY NEGOTIATION.
14. PACKING
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