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Jul.

31, 2025

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31, 2025

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Jul.

31, 2025

How many filtration types of phosphate slag produced in phosphate production?

Principle: use gravity to make the phosphating slag natural precipitation at the bottom of the pool, the supernatant is discharged. Applicable scene: slag volume is small, treatment requirements are not high occasions. Advantages: low cost, simple operation. Disadvantages: low efficiency, need to be left for a long time, slag water content is high.
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4

Jul.

31, 2025

How to control the concentration of pharmaceuticals through ampere-hour meter equipment

Through experiments to determine the amount of active ingredients in the drug solution consumed per unit of electricity (Ah) (such as g/Ah). Example: For every 1000Ah consumed, 5L of concentrated phosphate solution needs to be replenished to maintain the concentration. Proportioning factor (K): K = Make-up volume (L or g) Cumulative Ah K=  Cumulative Ah Make-up volume (L or g)
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5

Jul.

31, 2025

Difference between blower and induced draft fan in electroplating production

Equipment Core Role Application Scenario Blower To force fresh air or process gas into the system - To provide oxygen for plating tanks (e.g. acid copper plating requires air agitation) - Maintains positive pressure in the workshop and prevents the entry of external contaminants Induced draft fan Extracts exhaust gases, acid mist or harmful gases from the system - Removes acid mist from plating ba
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6

Jul.

31, 2025

What are the bases commonly used in electroplating production?

In electroplating production, alkali (alkaline substance) is mainly used for oil removal, activation, plating solution pH adjustment, neutralisation treatment and so on. The following are the bases commonly used in the plating process and their functions, properties and precautions:
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7

Jul.

31, 2025

pilot bcf multifilament spinning drawing machine for laboratory testing running

pilot bcf multifilament spinning drawing machine for laboratory testing running
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8

Jul.

31, 2025

What are the methods for preventing discoloration after tin plating

Do you know what are the methods to prevent discoloration after tin plating
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9

Jul.

31, 2025

Hot-dip galvanizing principle

Hot-dip galvanizing is a surface treatment technique in which steel products are immersed in a molten zinc solution (at a temperature of approximately 450°C) to form a dense alloy layer through a metallurgical reaction between iron and zinc.
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10

Jul.

31, 2025

The necessity of cooling and passivation treatment after hot-dip galvanizing

If a high-temperature workpiece after hot-dip galvanizing is directly exposed to air for cooling, the zinc layer will produce internal stresses due to sudden cooling, resulting in cracking or deformation of the coating. Water or air cooling slows down the cooling rate, stabilizes the structure of the zinc-iron alloy layer, and prevents plating defects caused by stress concentrations.
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11

Jul.

31, 2025

The role of phosphatization

Phosphating treatment forms a dense phosphate film (such as zinc phosphate or iron phosphate film) on the metal surface through a chemical reaction, blocking oxygen and moisture from direct contact with the metal and slowing down the rate of corrosion of the substrate, which is especially suitable for short-term rust prevention needs.
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12

Jul.

31, 2025

The role of passivation in electroplating

Passivation is a key step in the post-processing of electroplating, which significantly improves the corrosion resistance, appearance stability and functionality of the plated parts by forming a dense protective film on the surface of the metal plating.
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13

Jul.

31, 2025

Dongping Kaiyuan Machinery actively registers to participate in BICES 2025

Recently, Dongping Kaiyuan Machinery Manufacturing Co., Ltd. officially registered to participate in the 2025 Beijing International Construction Machinery, Building Materials Machinery and Mining Machinery Exhibition (BICES 2025).
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14

Jul.

31, 2025

How to choose jaw crusher and common troubleshooting

Jaw crusher is a common crushing equipment in mining, construction, metallurgy and other industries, and its performance directly affects production efficiency and cost control. Therefore, when choosing jaw crusher equipment, various factors must be carefully considered to ensure that the purchased equipment can meet production needs and has good performance.
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15

Jul.

31, 2025

What is primary crushing? How to choose the right primary crushing equipment?

Crushing equipment is mainly used to process natural rocks, various ores and large pieces of soft, medium and high hardness materials into stones of different specifications. The crushing process is divided into primary coarse crushing, secondary medium crushing and tertiary fine crushing.
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16

Jul.

31, 2025

How to Operate a Scissor Lift?

Operating a scissor lift can seem daunting at first, but with the right knowledge and precautions, it can be a straightforward process.
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17

Jul.

31, 2025

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31, 2025

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31, 2025

20

Jul.

31, 2025

2025 newly launched horizontal vacuum transformer oil filtration machine

HOPU 2025 newly launched ZYD series horizontal high vacuum transformer oil purifier is a key equipment to ensure the safe and reliable operation of transformers.
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