BLACKENING

Blackening merupakan sebuah proses "Penghitaman" atau pemberian warna hitam pada sebagian permukaan besi (metal), steel dsb dengan tujuan dekoratif (merubah penampilan dari permukaan besi sehingga lebih menarik).  Juga bertujuan untuk meningkatkan ketahanan terhadap korosi ringan, 

Untuk mencapai ketahanan maksimal, produk yang telah di Blackening dapat diberikan (dioles) dengan Rust Preventive Oil.

Setelah di blackening dan diberi rust preventive oil :

Hasil dari proses Blackening yang baik, tidak mempengaruhi dimensi dari material dan mewarnai secara seragam untuk tiap sudut, termasuk bagian dalam lobang- lobang yang tak terlihat (ideal untuk part-part kecil).

Our Product : Dia Black, packaging : 25 Kg/Bag

Aplikasi :

a. Larutkan Produk Blackening (DIA BLACK) dan Air, dengan perbandingan 55% : 45%

b. Panaskan Suhu larutan ± 140°C

c. Celupkan metal yang akan di proses, selama 5 - 15 menit (tergantung tingkat kehitaman yang diinginkan).

d. Bilas dengan air, untuk menghindari kontaminasi ke proses selanjutnya.

e. Jika menginginkan hasil yang lebih mengkilap, tidak ada bercak seperti white rust (tampilan mirip bedak putih), dan ketahanan terhadap korosi yang lebih maksimal, tambahkan Rust Preventive Oil (Diacote RP-91) pada part.

Urutan Proses :

Degreasing  -- Water Rinsing  --  Blackening  --  Water Rinsing  -- Hot Water

Perbedaan dan persamaan dengan proses Manganese Phosphate :

- Pada Manganese phosphate, di peruntukkan untuk Part-part yang membutuhkan Friksi (gesekan), sedangkan pada Part yang di Blackening tidak, hanya berfungsi untuk menghitamkan saja (dekoratif).

- Proses pada Manganese Phosphate menggunakan suhu yang relatif lebih rendah, yaitu 96-100°C dan additive berupa steel wool, sedangkan untuk Proses Blackening membutuhkan suhu yang relatif lebih tinggi, yaitu ± 140°C.

- Untuk ketahanan karat yang lebih maksimal, dapat di tambahkan Rust Preventive Oil.

Untuk informasi lebih lanjut dapat menghubungi kami :

PT. Aalen Chemicals Indonesia

Jl. Pulobuaran III Blok G3

Kawasan Industri JIEP, Pulogadung

Jakarta Timur

Tlp : 021-46830522

Website : www.aalen.co.id

Email : aalen.chemicals@gmail.com, aalen@cbn.net.id

TYPE of CLEANER (Liquid VS Powder Cleaner)

Cleaners :

- Solid Product (Powder)

- Liquid Product (Water based)

LIQUID VS POWDER CLEANER 

a.   Liquid products

    •    Advantages :

       - Easy to handle

       - No mixing vessel necessary

       - Automatical dosing out of delivery package possible (conductivity, constant amount per body)

       -  No formation of dust

       -  Multi-way-package/tanker 

    •    Disadvantages :

          -  Contains water as a solvent

          -  Higher cost for raw material, so the price of liquid cleaner more expensive than powder cleaner

         Liquid cleaner are :  
         - Acid Cleaner (for pickling and rust remover) : Diaclean AC-200, Diaclean AC-300, Diaclean              AC-500, Diaclean AC-600
         - Neutral Cleaner : Diaclean NC-330, Diaclean NC-333, Diaclean NC-310
         - Alkaline cleaner : Diaclean M-160 L, Diaclean M-220L

       b.   Powder products

     •  Advantages :

      - 100 % active material, no solvent

      -  Lower costs for raw materials

     •   Disadvantages :

          - Mixing vessel necessary

          - Formation of dust
          - High package effort

         Powder Cleaner usually as Alkaline Cleaner
        

Diaclean H-280, packaging :25Kg/Bag

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

ZINC PHOSPHATING (Spray Application)

Zinc phosphate (Zn₃(PO₄)₂) is an inorganic chemical compound used as a corrosion resistant coating on metal surfaces.

Phosphate salts is applied via spraying or immersion and chemically reacts with the surface of the part being coated to form a layer of insoluble, crystalline phosphates. Normal operation pH : 2.6 - 3.0

The operation should be controlled, to make best result :

- Temperature (if use Hot Temperature)

- Time

- pH

- Product concentration

- Free and Total Acid

  --Total acid is measure of total bath concentration/ Zn Content
  --Free Acid is maintain Zn solubility

The other chemicals should be add  in Zinc Phosphating are :
- Accelerator  (Dia Toner 20)
- Neutralizer (Dia Starter 40 - maintain pH, Free acid)

Advantage :

- Coating thickness 2.000 - 10.000 nm (usually 1.5 -  2.5 g/m2)

- High corrosion protection

Quality requirements on phosphate coating prior to painting :

- Uniform, small crystal

I. Zinc Phosphate, 3 kation (Spray application):

Our Product : Diafos 1000 Prep (Make Up), Diafos 1000 Alim (Replenishing)

Packaging : DF 1000 Prep (25 Kg/can), DF 1000 Alim (28 Kg/can)

DIAFOS 1000 is a nitrite accelerated tricationic phosphating process for steel, galvanized and alloy coated (Zn/Ni) steel. It generates a fine crystalline coating of manganese containing zinc phosphate. The crystalline layer has very good rust protecting properties and is an excellent support for subsequent painting or organic coating. DIAFOS 1000 gives particularly good results for steel in combination with galvanized or hot dip galvanized steel.  

Optimum process sequence of phosphating in Customer, spray application :

a. Degreasing

    Product : Diaclean M-140 or Diaclean H-435 

    Concentration : 2 - 5%

    Temperature : 40 - 60°C

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

b. Rinsing, prevent contamination

    Product : City water

    Temperature : Room Temperature (RT), ambien

    Contact Time : 1 - 2 minutes

c. Activation (Surface conditioning)

    Product : Dialene 80

    Concentration : 0.1 - 0.2%

    Temperature : Room Temperature (RT), ambien

    Contact Time : 1 - minutes

d. Phosphating

    Product : Diafos 1000 Prep (Make Up) Alim, Diafos 1000 Alim (Replenishing)

    Concentration : 3 - 5%

    Temperature : 45 - 50°C

    Contact Time : 2 - 15 minutes  (depending on the thickness)

e. Rinsing, (prevent contamination)

    Product : City water

    Temperature : Room Temperature (RT), ambien

    Contact Time : 1 - 2 minutes

f. DI Water Rinsing, (prevent contamination)

    Product : Demineralize water (DI Water)

    Temperature :Room Temperature (RT), ambien

    Contact Time : 1 - 2 minutes

Proses:

Degreasing  -- Rinsing --  Surface Conditioning -- Phosphating -- Rinsing -- DI Water Rinsing

Coating after treatment with phosphating: 

Crystal view with SEM (Scanning Electron Microscopy), aplication via spray, material steel :

Magnification 1000x, appearance : oval crystal, small size, uniform particles 

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

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

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

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