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 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  

  DH-201 Moderate-Temperature High-Effective Degreasing Agent(to be pickled in or sprayed)

 DH-201, with its excellent degreasing capacity, is used for steel-iron material cleaning before parkerizing. This agent may be pickled in or be sprayed, something very convenient to use.

1.  Treatment procedures:

a)  Degreasing --- cleaning in water --- cleaning in water --- surface adjustment --- cleaning in water       

    --- cleaning in water --- cleaning in pure water

b)  Degreasing --- cleaning in water --- cleaning in water --- acid pickling --- cleaning in water ---      

    (neutralizing surface adjustment) --- parkerizing --- cleaning in water

  c) Degreasing --- cleaning in water --- parkerizing --- cleaning in water

2.  The tank(1000L):

  Let the tank contain water up to 2/3 of its total volume. Heat the water until it is nearing the required temperature (see below). Put in 20kg of DH-201 degreasing agent. Start the cycling pump to ensure its dissolution. Then add more water to make the mixture come to the required volume. Test the alkalinity and put it to use.

3.  Treatment conditions:

Free alkalinity: 11-13pt

Temperature: 45-55°C

Time duration: 5-10 minutes

4.  Supplement and adjustment:

  Because the density of the mixture changes as long as the degreasing process goes on, tests must be made at regular intervals and more agent be supplied to keep the required density. Generally, 1.7kg of DH-201 should be added to increase the free alkalinity by 1pt.

    The degreasing mixer will become filthy and less effective after being used for a long time. Then,       

  even supplement of more agent can hardly bring back the satisfactory result. It is time to empty the    

  tank and to prepare a new mixture in it.

5. Method of alkalinity test:

    To test the free alkalinity, transfer 10ml of the treating liquid with a suction pipet into beaker, add  

2-3 drops of phenolphthalein. Titrate the mixture with sulphuric acid. When the mixture changes  

from pink to colorless, the number of ml of sulphuric acid used will be the result of the test.  

6.       Points for attention:

   DH-201 is an alkaline degreasing agent, and it must not come into contact with our eyes, skin or clothes. Workers must wear rubber gloves, protective overall and spectacles. In case drops of the treating liquid stain one’s eyes or skin, they are to be washed away with plenty of water.   

 
 
 
 
 

ADD:1 Baofeng Road,JingHe Industrial Areas, HeJian city, Hebei. TEL0086-317-3698166  FAX:0086-317-3698168 Mobile:(0086)13803256193

Postcode:062451  General:LI BAOQI  E-mial: libaoqi8899@163.com

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