Dongguan Yanghu Metal Surface Treatment Material Co., Ltd.
   
Products
  Magnesium alloy series
 
4 TR-888A magnesium alloy coating agent
4 TR-889 magnesium alloy passivating agent
4 TR-888B high salt spray coating of magnesium alloy
4 TR-888C magnesium alloy coating agent
  Phosphating film series
 
4 TR-701 screw, bearing coating agent
4 TR-702A phosphating agent
4 TR-702B zinc alloy coating agent
4 TR-703 wire tensile membrane agent
4 TR-707 coating of aluminum
  Degreasing series
 
4 Degreasing agent
4 TR-107 ultrasonic degreasing agent
  Derusting series
 
4 TR-301 rust removing agent
4 TR-306 neutral derusting agent
  Antirust series
 
4 TR-809 water based antirust agent
  Surface adjustment series
 
4 TR-501 gel peptide surface modifier
  Polishing series
 
4 TR-805 copper polishing agent
4 TR-806 stainless steel polishing agent
  Other series
 
4 Demoulding (off type) agent
  New product development
 
4 Pottery coating agent
Products
    
TR-702A phosphating agent
Name:TR-702A phosphating agent  Type: - Phosphating film series               

Product Name
(Process flow)
treatment condition
 
check system
T
time
working concentration
degreasant
spent meal
room temperature-60℃
5-8 min
alkalinity:20-30 dot
Titration test
wash
room temperature
30-60 second
PH<9
PH  test paper
wash
room temperature
30-60 second
PH<8
PH  test paper
surface conditioning
room temperature
20-40 second
PH>8
PH  test paper
phosphatizing
room temperature
8-12 min
total acid: 18-25dot
Titration test
wash
room temperature
4-6 min
PH>6
PH   test paper
wash
room temperature
30-60 second
PH>4
PH   test paper

 
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Copyright 2018 Dongguan Yanghu Metal Surface Treatment Material Co., Ltd. All Rights Reserved   Add:Huaide Industrial Zone, Humen Town, Dongguan City ICP-11039028