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 PRODUCTS

 High P-Ratio Parkerizing Agent DH-3250

Parkerizing Agent DH-180(to be sprayed)

Parkerizing Agent DH-190(to be pickled in)

Parkerizing Agent DH-L4330

Parkerizing Agent DH-J4400 Used in Wire-Drawing

USE DH-3237 IRON-STEEL RUST REMOVER

DH-60L Additive to Iron-Steel Rust Remover

DH-201 Moderate-Temperature High-Effective Degreasing Agent

DH-88 Colloid Titanium Surface Adjuster

 
PRODUCTS  

 

 

 Parkerizing Agent DH-L4330

1.       General introduction

DH-L4330 is a parkerizing agent used for wire drawing, main for iron-steel products produced in successive drawing. By means of a short time pickling, the agent forms a thin yet evn parkerizing film on the surface of the wire. The film is very stable with lubricants. It shows an excellent quality through cold–drawing process. It reduces the friction between metal pieces and lengthens the service life of tools. The drawing process is quickened and material consumed lessened. Wires treated with it have a shiny and refined surface.   

2.       Components of 3 kinds

DH-L4330A(for preparing the tank)

DH-L4330B(for reainforcing)

Activator AC1

3.       Treating procedures

Degreasing --- cleaning in hot water --- acid picking --- cleaning in water --- parkerizing --- cleaning in water --- lubricating --- drying

Degreasing and rust removing --- cleaning in water --- parkerizing --- cleaning in water --- lubricating --- drying

4.       Preparing the tank(1000L)

a)  Let the tank contain water up to 80% of the total volume.

b)  Add 170kg of DH-L4330A, and stir well.

c)  Pour in more water to make up the total volume(1000L).

d)  Heat the liquid to the temperature required, then test the acidity.

e)  Add 0.5kg of activator AC1, and stir well.

5.       Treatment conditions

General acidity --- 16-18pt

Density of activator --- 0.8-2.5pt

Temperature --- 80-85°C

Time duration --- more than 15 seconds

6.       Supplement and adjustment(for 1000L liquid)

   Density should be tested at regular intervals. Adding the agent frequently and bit after bit will bring satisfactory results. Every 10kg of DH-L4330B can raise the general acidity by 1pt. But in case of unexpected overflowing or getting deposits away and loss of the liquid being caused, DH-L4330A nust be added to adjust the general acidity. Every 2.5kg of DH-L4330A can increase general acidity by 1pt.

   Activator --- Activator in the liquid is consuming even while no work pieces are being treated. So its density should be tested in the process of treatment and extra activator be added to maintain the required density. Every 150g of activator AC1 can increase the acidity by 1pt.

1.       Testing methods

   General acidity --- Transfer 10ml of the liquid with a suction pipet into a 250ml beaker and add 5 or 6 drops of phenolphthalein. Titrate with NaOH(0.1N). When the color turns from colorless to pink, it is the end of the titration. The number of ml used is the value of general acidity.

   Density of activator --- Fill a fermentation tube with the treating liquid. Add 2-5g of sulphanilamide. Block the tube, turn it upside down and shake it vertically. Then let it stand still for 2 minutes. The volume of the gas produced as indicated by the scales will be the density of the activator. One scale means one pt.

2.       Lubricating

After the parkerizing treatment, different kinds of lubricants may be chosen for different purposes.

9. Materials of the apparatuses

   The parkerizing tank should be made of stainless steel. A tank made of carbon steel has a shorter service life. The heat exchanger, the piping and the pump should be made of stainless steel.

10. Deposits removing

   The best way to rid the tank of deposits is to pump the whole lot of the liquid into a deposit tower or deposit pool, and then return the clean liquid to the parkerizing tank..

 
 
 
 
 

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关键词:脱脂剂  除油剂  酸雾抑制剂  快速除锈剂  表调剂  磷化剂  钝化剂  氧化剂  防锈油