Knowledge

31Oct, 2024

What determines the drying temperature?
The determination of drying temperature is formulated based on the type of solvent, as various solvent components have different melting points. For example, zinc chloride has a me
30Oct, 2024

What are the main components of dry process solvents?
The components commonly used in "dry process" solvents are mainly of the following types: (1) Using hydrochloric acid (HCl) with a concentration of 31% (360 grams per lit
30Oct, 2024

What are the main components of wet process flux?
Generally, the "wet process" flux mainly consists of the following two types of components: One type uses ammonium chloride (NH₄Cl) alone as the flux. The other type uses
30Oct, 2024

What is the solvent method, and what is the purpose of using a solvent?
After pickling, cleaning, and optionally immersion in a dilute hydrochloric acid solution, steel pipes must be coated with a layer of concentrated hydrochloric acid, zinc chloride
30Oct, 2024

What is the purpose of cleaning?
After being pickled and taken out from the pickling tank, steel pipes have residual acid, iron salt particles, and other substances adhering to their surfaces. These substances are
30Oct, 2024

What aspects should be self-checked during the acid pickling process?
Self-inspection by acid picklers on the steel pipes they are responsible for pickling is a crucial step. Only when everyone strictly controls quality can we ensure that defective a
29Oct, 2024

Why must steel pipes be rinsed immediately after pickling?
Steel pipes must be rinsed with water immediately after being removed from the pickling solution to avoid the following issues: (1) It prevents the pickling solution remaining on t
29Oct, 2024

Why is it necessary to lift and lower steel pipes several times during bundle...
During the pickling of bundled steel pipes, it is commonly observed that the pipes being pickled in the pickling tank are lifted and lowered several times during the process. This
29Oct, 2024

Why is it beneficial to oscillate steel pipes or create solution flow during ...
During the pickling of steel pipes, it is generally observed that: Firstly, when the steel pipes are oscillated or the pickling solution is agitated by steam heating, the pickling
29Oct, 2024

Why is the multi-tank pickling method considered to have more benefits than t...
The multi-tank pickling method offers several advantages over the single-tank method when pickling steel pipes. Firstly, the steel pipes are pre-pickled in a tank with a lower acid
29Oct, 2024

Why is direct steam heating commonly used for pickling solutions? What are it...
Direct steam injection into pickling solutions is a widely used heating method due to its simplicity and ease of implementation, high heating efficiency, and its ability to stir th
28Oct, 2024

Heating Method for Pickling Solution - Hot Water Heating Pipe Method
Advantages: Prevents dilution of the pickling solution and saves consumption during pickling. Disadvantages: Poor heat utilization efficiency, occupies a certain working volume of

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