Q:The stainless steel ring is dipped in Rosin when soldering, and there is a yellow stain on the surface. After washing with alcohol, there will be obvious marksThis regular code can be wiped off completely. It can not be polished

No, rosin is soluble in alcohols. It should be rubbed off. Is not enough alcohol, try anhydrous alcohol.

Q:Influence of flux granularity on process

In simple terms, the degree of fine particle flux flux welding the weld smooth, large particle flux welding the weld rough, sometimes seen in the weld surface pits, but the flux particles too small, welding when the exhaust air is blocked, the surface or near surface gas hole to weld, so now the use of granular flux the basic 10~40 head in this range

Q:What soldering flux is used for welding silver products?

Just use rosin

Q:How do you confirm the spray status of the soldering flux?

Spraying is the latest method of flux coating, which is most suitable for coating without cleaning flux. Because the flux is placed in a pressurized container through the nozzle spray mist flux coating on the surface of PCB, injectors, degree of atomization and spray width can be adjusted, so it can accurately control the amount of solder coating. Because the coated flux is a foggy sheet, the solder on the plate is very uniform, ensuring that the welded panels meet the requirements of cleaning. At the same time, due to the flux completely sealed in the container, does not need to consider the solvent evaporation and absorption of moisture in the atmosphere, which can keep the flux proportion (or components) unchanged, once added to run out before without replacement, a foaming method and wave method can reduce the amount of flux is more than 60%. Therefore, spray coating is the preferred coating process in the cleaning process. In the spray coating process must pay attention to a little, because flammable solvent containing more flux of solvent vapor spray from the deflagration exists certain risk, so the equipment should have good ventilation facilities and necessary fire extinguishing apparatus.

Q:How do you clean the solder paste?

The flux belongs to the volatile products, Dongxin Tai solder mixed together to get that with no Tim as is impossible, after adding a small amount of advice

Q:How do you clean the soldering flux when you are not careful with it?

Conditional first washed with alcohol, and then wash with soap, no alcohol around, direct cleaning with soap can also be

Q:Why does the flux smell of kerosene?

Because of kerosene, BS-10 has 4% kerosene

Q:Is there any environmental protection for soldering flux?

Look at what you ask for environmental protection, that's all. ROHS generally passes

Q:I am an electronics factory in charge, there is a sticky feeling dip to complete the PCBA, we use the non cleaning flux, do not know the film does not affect the quality of products, there is no need to wash the plate? Please expert advice!What should I do with it? Is alcohol all right? By the way, what welding wire do you use when you repair welding? I think the solder wire inside the flux will also have such a problem!

This is my specialty. I have been in engineering and management in an electronic factory for over ten years. I have been doing technical and managerial work in 6 years. Most people give advice that is one-sided and does not take on practical significance. Of course, they are sincere in their zeal. Many electronic engineers have always been partial to flux knowledge, and they can not get some specialized knowledge of flux.Disposable flux is relative, you ask the supplier what is the definition of flux, that is disposable after welding without cleaning, it is dangerous to generalize. Several factors:1. what kind of products do you have (circuit characteristics: high voltage, low voltage, high frequency, low frequency)?.2. surface insulation impedance parameter of flux. (true, don't Scribble data)3. customer requirements for PCB surface cleanliness.4. working environment of products.Disposable solder wire resin material or resin solid content, good safety, can not accept the appearance of cleaning, improper cleaning will produce white powder.Flux welding after the residue of many, sticky hands (some cold after it does not stick) is not the reason for cleaning, this is the appearance of the layman's point of view. WW112266@126.COM

Q:I heated the 775 pin motherboard, why the success rate is not high?

Contact each flux manufacturer; let them send samples to test goods; always have what you need; I have done it before; this thing always suits you