PT. AALEN CHEMICALS INDONESIA: September 2014

Wednesday, September 17, 2014

POST TREATMENT (PASSIVATING)

After treatment with phosphating, pickling (deruster/ rust remover), ussually use Passivating. Passivation is the treatment of the surface of stainless steels, often with acid solutions (or pastes), to remove contaminants and promote the formation of the passive film on a freshly created surface (eg through grinding, machining or mechanical damage). Passivating can be used for neutralizing surface.

Our Passivation are :

a. Powder : Dia Passivation RP, packaging : 25 Kg/Zak

b. Liquid : Dialene 3 (Chrome based, Packaging 20 Kg/Can), Dia Passivation L-44 (water based)

Packaging : 20 Kg/Can

a. Liquid (Dia Passivation L-44)

Passivation of steel and cast iron for subsequent storage in closed warehouses.

Application in:

- Water for leak testing hollow parts, e.g. radiators, fuel tanks, intake manifolds, cooling system, etc

- Cooling water circuit on engine test benches

- Cooling water for induction hardening

- Mildly alkaline solutions as well as neutral cleaner solutions for improving the corrosion protection

Operating processes: Application in immersion and spray systems, especially in the last stage of multiple

zone systems.

Process of passivating

b. Powder (Dia Passivation RP)

Fields of application: Passivating of steel and cast iron for subsequent storage in closed warehouses.

Operating processes: Application in immersion and spray systems, especially in the last stage of multiple zone systems.

Application concentrations: 10 - 20 g/l on steel

20 - 30 g/l on cast iron

Application temperatures : 20 to 80 °C

Foaming characteristics: Applicable in the given concentration and temperature ranges without interfering foam.

Passivation RP, Packaging : 25 Kg/Bag

Control of passivating with ph paper or ph meter, for the best result:

Result of treatment after use Passivating:

Untuk info lebih lanjut hubungi kami :

PT. Aalen Chemicals Indonesia

Jl Pulobuaran III Blok G3,

Kawasan JIEP Pulogadung

Tlp : 021-46830522
Website : www.aalen.co.id
Email : aalen.chemicals@gmail.com, aalen@cbn.net.id

Friday, September 12, 2014

CHROMATING (Chrome Hexavalent)

Aluminium and aluminium alloys are treated by a corrosion resistant conversion coating that is called "CHROMATE COATING" or "CHROMATING".

Chromate conversion coatings are commonly applied to everyday items such as hardware and tools, and can usually be recognized by their distinctively iridescent, greenish-yellow color. Chromated means treated with a solution of chromate, usually hexavalent (valence +6) or trivalent (valence +3), as a corrosion-fighting passivation layer--usually applied to zinc and cadmium plated parts, or to aluminum.

Our Product : - Diachrome AL-51C (Cr6+), packaging : 20Kg/can.

- Diafos 7000 (Cr3+), packaging : 20Kg/can.

A. Chromating hexavalent (Cr6+) :

Diachrome AL-51C is a liquid compound designed to produce a transparent protective coating on aluminium or aluminium alloys. The coating colour ranges from colourless to slight iridescent, provides protection for aluminium and is an excellent support for clear organic coatings. Diachrome AL-51C should be used when the characteristic aluminium appearance and colour must be retained. Diachrome AL-51C can be used both by spray and immersion.

Operating Condition :

Cr(VI)-points 6.5 – 10.5

pH 2 to 2,8

Temperature 25 - 60 °C

Time (immersion) 2 to 4 min.

Time (spray) 30 to 120 sec.

Pressure 0 - 1.0 bar

Packaging : 20Kg/Can

Control Cr(VI)-points with titration:

1. Pipette 50 ml sample of the Diachrome AL-51C bath into a 250 ml flask and dilute with 50 ml distilled water.

2. Add 25 ml of 10 % H2SO4 and 20 ml of 10% solution KJ.

3. Titrate with 0.1 N sodium thiosulphate solution (0,1N Na₂S₂0₃) until the colour changes from brown to clear yellow.

4. Add several ml of the starch solution to the sample and continue the titration until the blue-black colour disappears.

5. Record the number of ml of 0.1 N sodium thiosulphate solution used as Cr(VI)-points.

A simple process of chromating (Cr6+) :

a. Degreasing

Product : Diaclean M-200 or Diaclean H-460

Temperature : Room Temperature (RT), Ambien

Contact Time : 5 - 15 Minutes (depending on the oil)

Concentration : 3 - 5%

b. Water Rinsing

Product : City water

Temperature : Room Temperature (RT), Ambien

Contact Time : 1 - 2 Minutes

c. Chromating (for the best result can be involve with etching)

Product : Diachrome Al-51C

Temperature : Room Temperature (RT), Ambien

Contact Time : 2 - 5 Minutes

Concentration : 3 - 5%

d. Water Rinsing

Product : City water

Temperature : Room Temperature (RT), Ambien

Contact Time : 1 - 2 Minutes

e. Drying

The result after treatment with Chromating :

Yellow coating after treatment with chromating

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B. Chromating trivalent (Cr3+)

DIAFOS 7000 is a conversion coating process for aluminium. Diafos 7000 gives particularly good results for aluminium.

A simple process of chromating (Cr3+) :

a. Degreasing

Product : Diaclean M-200 or Diaclean H-460

Temperature : Room Temperature (RT), Ambien

Contact Time : 2 - 5 Minutes (depending on the oil)

Concentration : 3 - 5%

b. Water Rinsing

Product : City water

Temperature : Room Temperature (RT), Ambien

Contact Time : 1 - 2 Minutes

c. Conversion coating (for the best result can be involve with etching)

Product : Diafos 7000 AA + DIAFOS 7000 AB

Temperature : Room Temperature (RT) - 55°C

Contact Time : 2 - 5 Minutes

Concentration : 4 - 5%
pH : 3.5 - 4.0

d. Water Rinsing

Product : City water

Temperature : Room Temperature (RT), Ambien

Contact Time : 1 - 2 Minutes

e. Drying.

Transaparnt coating after treatment with chromating tri valent (Cr3+)

For more details, please contact us :

PT. Aalen Chemicals Indonesia

Jl Pulobuaran III Blok G3,

Kawasan JIEP Pulogadung

Tlp : 021-46830522
Website : www.aalen.co.id
Email : aalen.chemicals@gmail.com, aalen@cbn.net.id

Wednesday, September 10, 2014

IRON PHOSPHATING

This product is suitable for steel that make a basic corrosion protection.

Iron phosphate is the thinnest of phosphate films. In the application process, an iron oxide base is developed, followed by a flat or amorphous metal phosphate topcoat. The treated metal surface will typically have a gray to blue iridescent or blue-gold iridescent color, depending on the coating weight and the base metal.

Iron phosphate processes are much easier to operate and require fewer process stages than zinc phosphating. However, iron phosphates do not provide the degree of corrosion protection imparted by zinc phosphates. Normal operation pH : 3.5 - 6.0

Chemical Reaction of Iron Phosphate :

Fe + 2H₃PO₄ Fe(H₂PO₄)₂ + H₂

Advantage :

- No heavy metalls

- Medium energy consumption

- Medium cost for : waste disposal, cleaning and chemicals

- Coating Thickness : 200 - 800 nm

- Test SST (Salt Spray Test) : 72 - 96hours (Acrylic paint or wet paint).

Ilustration picture, treatment with Iron Phosphate:

Left side:"Thin" Iron Phophate Coating Right side :"Thick" Iron Phophate Coating

Coating Weight 0,3 g/m² Coating Weight 0,8 g/m²

Magnification 32.000 x Magnification 16.700 x

Our Product : Diafos I-5000 , and Diafos I-5050 (Packaging 25 Kg/Can)

DIAFOS I-5000 :

DIAFOS I-5000 is a formulated iron phosphate solution designed for the treatment of ferrous material and their alloys. DIAFOS I-5000 grants an amorphous phosphate coating being an excellent adhesion for liquid, solid or electrophoretic paints. The proper use of the product needs a subsequent rinse with partial continuous renewal and possibly a final rinse with demineralized water. A suitable final passivation improves results.

DIAFOS I-5000 is used in spare parts prepainting treatment for automotive, appliances, metal furniture and plate manufactured goods in general scantily exposed to aggressive agents (humidity, atmospheric agents, etc.). DIAFOS I-5000, where no specific cleaning stage is provided, must be added with a Cleaning Additive such as DIA ADDITIVE I-5050 that could be chosen according to the operating conditions (temperature, type of dirty, application spray/dip) and so DIAFOS I-5000 is suggested for different type of plants.

A typical process of iron phosphating in Customer, spray application :

a. Degreasing,

Product : Diaclean M-140

Concentration : 2 - 5%

Contact time : 2 - 10 minutes (depending on the oil)

Temperature : ambien or 45 - 60°C

b. Rinsing

Product : City water

Contact time : 1 - 2 minutes

Temperature : ambien (Room Temperature)

c. Iron Phosphating

Product : Diafos I-5000

Concentration : 3 - 5%

Contact time : 2 - 10 minutes (depending on the thickness)

Temperature : ambien or 45 - 50°C

d. Rinsing

Product : City water

Contact time : 1 - 2 minutes

Temperature : ambien (Room Temperature)

e. DI Water Rinsing

Product : Demineralize water

Contact time : 1 - 2 minutes

Temperature : ambien (Room Temperature)

f. Drying

After iron phosphating:

left side: no treatment, right side: treated with iron phosphating

For more details, please contact us :

PT. Aalen Chemicals Indonesia

Jl Pulobuaran III Blok G3,

Kawasan JIEP Pulogadung

Tlp : 021-46830522
Website : www.aalen.co.id
Email : aalen.chemicals@gmail.com, aalen@cbn.net.id

MANGANESE PHOSPHATE

Manganese phosphate can also be used for coatings (which are processed as described above). These coatings are useful for protection against corrosion and wear over time, due to their toughness. Manganese phosphate coating can often be found in the oil and gas industry, firearms and ordnance, aerospace, gears and bearings, and in marine equipment. They are also common in engines, screws, nuts and bolts, washers, and the list continues.

A typical process of Manganese Phosphating in Customer :

a. Degreasing

(Proses sederhana saat trial)

b. Rinsing (pembilasan)

(Proses sederhana saat trial)

c. Pickling (For smooth crystal and best result)

(Proses sederhana saat trial)

d. Rinsing (pembilasan)

e. Manganese Phosphating

f. Rinsing and Drying

g. Rust preventive oil (for protection purpose)

Our Product : Diafos Mn-1, packaging : 25Kg/Can, appearance: greenish liquid

DIAFOS Mn-1 is a liquid one pack material designed to produce on steel a thick, even, crystalline conversion coating made of Manganese and Iron phosphate; the phosphate layer texture is specifically suitable as anti wear and protective coating, can use for material that need a friction, which is able to absorb organic protective, such as crude or emulsified oils.

Application in heat temperature : 95 - 99° C, 15 - 30 minutes