Frank Alkanes India Pvt Ltd

FRANK PHOS FZ-6

INTRODUCTION
Frank Phos FZ-6 is a chemical intended for an accelerated process for providing Zinc Phosphate coating on steel and zinc when warm dipped.

FEATURES
● Produces highly adherent coatings.
● Designed to tolerate higher load ratios and hence very little control is needed.
● Special accelerators and refiners produce highly refined, heavier coating in a very short time.
● Coating weight of 4-10 gms / Sq.m is easily achieved.
● Produces highly corrosion resistant coatings.
● Coating weight can be varied from medium to heavy by varying the coating time.
● Simultaneous processing of Steel & Zinc surfaces can be done.

DUAL PURPOSE PROCESS
FRANK PHOS FZ-6 gives medium to heavy weight coatings after acid or Alkali cleaning and fine crystalline coatings after FRANK SURFINE TX pre dip.

IDEAL FOR PAINTS, STAINS AND OILS
FRANK PHOZ FZ-6 coatings form an excellent foundation for paints, stains and oils. The coating obtained after FRANK SURFINE – TX Pre dipping are sufficiently fine to enable a good gloss to be achieved with subsequent paint systems.

CONVENIENT FOR DEEP DRAWING, EXTRUSION AND COLD FORGING : -
FRANK PHOS FZ-6 is very easy to operate to get appropriate phosphate coating for the above deforming process. It can be operated with Frank Tone or with Iron build-up.

EASY OPERATION
Zinc Phosphating process with FRANK PHOS FZ-6 are easy to operate and are controlled by simple tests requiring no Chemicals knowledge. No fumes or odours are given off.

APPLICATIONS
FRANK PHOS FZ-6 is ideal for a wide range of zinc and ferrous metal articles. Its ability to produce coatings of different weights depending on the cleaning methods and process parameters used, makes it particularly suitable for pretreating a large range of articles for different purposes.

APPROVALS
FRANK PHOS FZ-6 meets the specification WPN/GPN/ 3:1965 as a class l accelerated process and the requirements of its 3618 : 1966 Class B/Class A-2.

OPERATING SUMMARY
Zinc phosphating with Frank Phos FZ-6 BATH MAKE UP

For every 1000 litres add the following to the water in sequence with stirring.

FRANK PHOS FZ-6 : 50 Litres.
Frank Tone ( 25% w/v solution) : 1 Litre.

CONTROL POINTS ( GUIDANCE ONLY)

POINTAGE - 25 – 35
Frank Tone Titration - 0.5 – 1.5 ml
Temperature - 65 – 70 °C
Immersion Time - 5 – 10 minutes.

PROCESS

SURFACE PREPARATION :
1. Remove all grease by FRANK SOL / FRANK MOVE FG-3 followed by rinsing.
2. Remove any rust and scale present by immersing in FRANK DINE FDR-4 followed by thorough rinsing.

PHOSPHATE COATING
Immerse in the FRANK PHOS FZ-6 bath for 5-10 minutes at 65-70°C

RINSING :
Rinse in clean running water followed by a hot water rinse containing a trace of FRANK BOND. FRANK BOND in the final rinse counteracts the effects of any hardness in the rinse water and improves the corrosion resistance . It also acidifies the surface slightly before drying and thereby ensures good paint adhesion under prolonged humid conditions.

DRYING :
Dry using a oven or compressed air if necessary. Heavy range steel parts often contain sufficient heat to dry the surface and no extra heat is needed. Small parts can be dried on a hot plate or in a hated centrifuge.

SEALING :
Phosphate coating are not in themselves Rust Proof and must be sealed with plant, stain or oils as soon as possible to provide permanent protection. Details of Frank range of speciality rust preventives will be made available on request.

BATH CONTROL
Restore the working level of the bath regularly, with tap water to make good evaporation and drag out losses. Check the FRANK PHOS FZ-6 and FRANK TONE concentration using the tests described below. Before testing adjust the FRANK PHOS FZ-6 bath to its normal working level with tap water, stir and check that the bath is at its working temperature.

FRANK PHOS FZ-6 concentration – Pointage Titration.
1. Pipette 10 ml of the bath solution into a conical flask.
2. Add a few drops of Phenolphthalein indicator solution and mix by shaking.
3.Titrate with 0.1 N Sodium Hydroxide until a permanent pink colour is obtained.
4.The number of ml of 0.1 N Sodium Hydroxide added is the points of the bath. Add 180
ml if FRANK PHOS FZ-6 per 100 litres of bath solution for each point below 25. ( for a 5.0% v/v solution).

II TITRATION METHOD
1.To 50 ml of the bath solution add about 10 ml of 50% sulphuric acid.
2.Titrate with0.1 N potassium permanganate until the pink colour persists for 15 seconds.
3.The number of ml of potassium permanganate added is the FRANK TONE titre value and this should be 0.5 – 1.5 ml. If necessary add more FRANK TONE . Approximately 30 ml of FRANK TONE solution will raise the Litre by 1 ml in a 100 litre bath.

ZINC PHOSPHATING WITH FRANK PHOS FZ-6 AND IRON BUILD UP ( WITH OUT FRANK TONE)

SUMMARY OF OPERATING DATA

Bath make – up
For each 100 litres of bath , add to the water with stirring :

Process without FRANK TONE : FRANK PHOS FZ-6 – 5 Litres.

CONTROL POINTS ( * FOR GUIDANCE ONLY)

Parameters	Process
POINTS	25.0 – 35.0
Ferrous Iron Concentration	0.05 -0.4%
Immersion Timings	15 – 20 minutes
Temperature	75 - 95° C

PROCESS

Pre cleaning

1. Remove all grease by trichloroethelene degreasing, FRANK MOVES, or solvent wiping, Rinse where necessary.
2. Remove any rust and scale present by immersing in FRANKDINES and rinsing. Alternatively If the scale is heavy, the surface is best cleaned by sand blasting or alternatively by pickling and rinsing thoroughly in two stages.

PHOSPHATE COATING
Immerse in the FRANK PHOS FZ-6 bath for 15 -20 minutes at 75 – 95 ° C for ‘ process without FRANK TONE.

RINSING
Rinse in clean running water followed by a hot water rinse containing a trace of FRANK BOND in the final rinse counteracts the effects of any hardness in the rinse water and improves the corrosion resistance. It also acidifies the surface slightly before drying and thereby ensures good paint adhesion even under prolonged humid conditions.

NOTE :
For Defence specification work an additional hot water rinse is required before the final rinse.

DRYING
Dry using an oven or compressed air if necessary .Small parts can be dried on a hot plate or centrifuge,

SEALINGS
Phosphate coatings are not in themselves rust – proof and must be sealed with paint or oils as soon as possible to provide permanent protection.

BATH MAKE UP AND OPERATION FOR ZINC PHOSPHATING WITH FRANK PHOS FZ6 AND IRON BUILD – UP

Chemicals required
The process requires FRANK PHOS FZ-6 STEEL WOOL and FRANK BOND for use in the final rinse.

MAKE-UP

1. Partially fill the tank with water and add 5.0 litres of FRANK PHOS FZ-6 for every 100 litres of bath.
2. Fill in the bath to its operating level with water and stir the solution thoroughly.
3. Heat the bath to the temperature of 75-80° C and add 25-50 gms of degreased steel wool per 100 litres of solution.
4.After about 10 mts when the gassing has ceased, remove the wool, heat the bath to its operating and bring into use.

NOTE
The FRANK PHOS FZ-6 bath is controlled by determining its strength and iron concentration as follows:

DETERMINATION OF STRENGTH

FRANK PHOS FZ-6 STRENGTH BY TITRATION METHOD

1. Pipette 10 ml of the bath solution into a beaker.
2. Add a few drops of Phenolphthalein indicator and mix by shaking.
3. Titrate with 0.1 N Sodium Hydroxide until a permanent pink colour is obtained.
4. The number of ml of 0.1N Sodium Hydroxide added is the “Point” of the bath .Add 170 ml of FRANK PHOS FZ- 6 per 100 litres of bath for each point below 20

DETERMINATION OF IRON CONCENTRATION
Pipette 10 ml sample of bath solution into a conical flask. Add 5 ml of 50% Sulphuric acid solution. Titrate with N/10 potassium permanganate solution at a pink colour that persists for at least 15 seconds. Ferrous Iron = No.of mls of N/10 potassium permanganate required X 0.056 when the ferrous iron concentration reached 0.4% or more discard all or part of the bath.

MAINTENANCE
During processing, sludge is formed as a natural by product of the coating reaction. This accumulates at the bottom of the tank. Being inert, the sludge will not affect the chemical balance of the FRANK PHOS FZ-6 bath but with excessive accumulation it may touch the work causing improper coating. It is therefore, necessary to desludge the FRANK PHOS FZ-6 bath at regular intervals. To do this allow the sludge to settle overnight and pump the top clear liquid into the emptied rinse tank and discard the sludge. Wash out the FRANK PHOS FZ-6 tank and return the solution . Restore the bath to its operating level by adding tap water and FRANK PHOS FZ-6 in the same proportions as the original bath.

STAGE	PROCESS	CHEMICAL	TEMP	TIME
STAGE	PROCESS	CHEMICAL	TEMP	(Minutes)
1	DEGREASING	FRANK MOVE FG-3	90-95° C	05-Oct
2	RINSING	--------	AMBIENT	FLASH
3	DERUSTING	FRANK DINE FDR-4	AMBIENT	May-20
4	RINSING	--------	AMBIENT	FLASH
5	RINSING	--------	AMBIENT	FLASH
6	SURFACE CONDITIONING (OPTIONAL)	SURFINE TX
7	PHOSPHATING	FRANK PHOS FZ-6 (a) with Frank Tone	65-70° C 75-85° C	05-10 10-15
		(or )
8	RINSING	(b) with iron build up	AMBIENT	FLASH
9	PASSIVATION	( without FRANK Tone)	60-75° C	FLASH
10	AIR DRYING (OPTIONAL)	------	80-120° C	FLASH
		FRANK BOND
		---------

HANDLING PRECAUTIONS
FRANK PHOS FZ-6 is slightly acidic and clothing should be protected if there is a possibility of splashing with the solution wash off any splashes at once with cold water. If the solution gets in the eyes wash out with liberal quantities of water and obtain immediate medical attention.