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Agent for light metal
Pre-paint treatment for aluminum alloys and magnesium alloys
(painting base treatment)
Non-Cr treatment for Aluminium alloy
1.Process
2.Production
| Process | Degreasing | Pickling | Chemical conversion coating |
| Product name | Grandacleaner 2050E | Torioner 1750 | Grander AL-540S |
| Caracteristic | Etching type | non-F type | non-Cr type |
| Temperture | 40～50℃ | 30～50℃ | 40～50℃ |
3.Coating performance example
| Painting | Solvent(clear)35-50㎛ | powder coat 80～120㎛ |
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| Test item | CASS (96hr) |
Humidity test (240hr) |
CASS (96hr) |
Humidity test (240hr) |
| Test result | 1.5mm | 1mmcross cut 100/100 | 0.5mm | 2mmcross cut 100/100 |
Trivalent Cr treatment for Aluminium alloy
1.Process
2.Production
| Process | Degreasing | Pickling | Chemical conversion coating |
| Product name | Grandacleaner 2050T | Torioner 1750 | Grander AL-590S |
| Caracteristic | Soft-etching type | non-F type | Trivalent Cr type |
| Temperture | 40～50℃ | 30～50℃ | 40～50℃ |
3.Coating performance example
| Painting | powder coat 80～120㎛ |
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| Test item | SST (1200hr) |
CASS (240hr) |
Humidity test (240hr) |
| Test result | 0.5mm | 1.5mm | 2mmcross cut 100/100 |
※TP:AC4C(A356)
SST: After salt spray test, blister along cross cut(mm)
CASS:After CASS test blister along crosscut(mm)
Humidity test:50℃ over95%RH and cross cut adhesion
Cr free treatment system for Mg alloy
The chromium-free chemical conversion coating for magnesium alloy
| Our effort | Alloy type |
| 1997 The first chem. conversion treatment line using our products for magnesium alloy started operation. |
AZ91 |
| 1999 The first low electric resistance chem. conversion treatment line using our products in japan started operation. | AZ91 |
| 2003 The world’s first low electric resistance chem. Conversion treatment line using our products for pressed magnesium alloy parts started operation. |
AZ31 |
| 2007 Mass production of the magnesium alloy motorcycle frame in the chemical conversion treatment line using our products started. |
AM60 |
| 2012 Mass production of the ultra light weight Mg-Li alloy parts in the chemical conversion treatment line using our products started. |
LA141, LZ91 |
| 2016 Mass production of magnesium alloy metallic luster appearance paddle shift started operation. |
AZ91 |
| 2017 The blackness treatment process has been established. |
AZ91 |
1.Process
1
(etching)
2
(desmat)
High performance treatment line up
GC:Grandacleaner
GF:Grandafiner
GR:Grander
3.Technical Data
Electric resistance measuring device:
Mitsubishi Chemical Analytech resistivity meter Loresta
Primary adhesion:
Cross cut adhesion test(cross cut tape peel test)
Humidity test:
Cross cut test(cross cut tape peel test)after 50℃, over95%RH and 100Hrs
Boiling water resistance:
Cross cut test(cross cut tape peel test)after in boiling water 1hour
Salt spray test:
Coating blistering width along cross cut.
