Stainless steel water pipeline pickling passivation treatment is designed to complete the welding construction of stainless steel sanitary pipeline and its connection with the stainless steel sanitary material containers of the pipeline wall and weld cleaning, removal of weld oxidation layer and the formation of a protective film of metal on the surface of the inner wall to ensure that the pipeline and the container's internal cleanliness in order to resist high purity and high temperature water on the surface of the stainless steel intergranular corrosion may be caused by the prolonged service life at the same time. service life.
Stainless steel pickling passivation pipeline process:
1: Prepare a liquid storage tank and a water pump, and to pickling passivation of the pipeline connected to a circulation path.
2: Sufficient amount of Kaimun brand stainless steel pickling passivation liquid ID4008
3, lye cleaning: prepare sodium hydroxide, formulated into 5% (volume concentration) of the lye, with a pump for circulation, time not less than 15min, and then discharge.
Kaiman brand stainless steel pickling passivation solution for stainless steel pipeline pickling passivation process is broadly divided into: Kaiman brand stainless steel pickling passivation solution cyclic cleaning (pipeline pressure of 3-4MPa, takes about 30-45min), pickling passivation after deionized water to the pipeline to the discharge of acid, in 5% lye neutralization (cyclic cleaning) for 15min, deionized water rinsing resulting in a clean pipeline.
Stainless steel pipe pickling passivation construction safety measures
1 Installation of guardrail or cloth to the entire pickling area (including pipeline through the place) closed up and in the entrances and exits post system conspicuous mark: being pickled, non-staff shall not enter. If the pickling area involves the entire workshop, it must be timed to ensure that no one enters during the work.
2 Each person entering the pickling area must wear the correct PPE chemical protective clothing, acid boots, face mask, industrial acid and alkali gloves, gas masks, etc. After contacting the leaking chemicals, they must rinse with tap water immediately afterward, and must not touch other personnel or surrounding equipment at will.
3 Acid washing area and each channel to send a person to monitor to ensure personal safety.
4 After acid washing is completed, X first use tap water to rinse the outer wall of the mobile cylinder and connecting pipeline, rinse gloves and the surrounding ground, sprinkle soda ash surface and then rinse with tap water to ensure that there is no residual acid. Clean up all temporary piping, mobile cylinders, temporary pumps, etc., rinse the entire pickling area with tap water, and remove garbage.
Supplementary:
1 There will be a large amount of wastewater to be discharged to the sewage tank when flushing the pipeline, and the sewage station needs to be prepared in advance at that time.
2 Pickling passivation requires a large amount of hot deionized water, in the pickling passivation within 24 hours must ensure its supply.
