What are the solder dross reducing agents? Where is the reduced powder?

Guangdong Foshan Chentai Electronic Technology and related colleges and universities jointly developed a new dry nitrogen-containing antioxidant active agent, which can not only reduce the solder slag into liquid solder, but also release nitrogen (N) to prevent the oxidation of the surface of wave soldering brazing filler metal. When it comes into contact with the molten brazing filler metal, it forms antioxidant crystals when heated, slowly releases nitrogen to form a protective layer to prevent oxidation on the surface of liquid solder, and is suspended between metal oxide particles and residual flux as an organometallic compound, in which the active factors react with the oxides produced and make them quickly dissolve in liquid tin. When the metal oxides in the oxide slag are dissolved, the interconnected metal oxide arrangement is open, and any useful metal trapped in the slag will dissolve and will not be affected by the active agent.

Product introduction: Foshan Chentai Electronic Technology Co., Ltd. in 2012 launched the latest strong launch: MSS-9 solder slag remover (liquid), mainly used to prevent dynamic wave furnace solder liquid surface oxidation and solder slag reduction.

The dosage is small, the operation is simple and convenient, there is no need to modify equipment and add personnel, online operation, and there is no need to clean tin slag for a long time. The product is developed by "liquid nitrogen (N) and polymer organic active agent, dispersant, wetting agent".

It completely changes all the previous processes, and is directly poured on the surface of the wave furnace solder when used, and the liquid nitrogen effectively slows down the oxygen absorption on the surface of the solder after being heated, and the activity is also suspended between the solder oxide and the residual flux, which continuously separates all metal substances, so that the generated solder slag is quickly reduced to liquid solder.

The antioxidant reducing agent does not react with metal, only reacts with tin oxide slag, and has less smoke and light taste. When the metal oxides in the oxide slag are dissolved, the interconnected metal oxide arrangement is open, and any useful metals trapped in the slag are displaced, and are not affected by antioxidants, this new technology can reduce the cost of the slag by 98%-99%.

Features:1The product is liquid, poured on top of the solder slag when used, and can be quickly reduced without stirring, and quickly diffuses to the entire liquid level.

2.The operation is simple and convenient, and the dosage does not need to be very precise.

3.Small smoke, light taste, no sparks, no agglomeration, no sticking to the furnace wall, no corrosiveness.

4.The product contains liquid nitrogen (N), which has the dual functions of anti-redox.

5.It can reduce the surface tension of solder, increase the fluidity and diffusion of solder, and greatly improve the quality of soldering.

6.The reduction efficiency is as high as 90, the solder is not necessary to be replaced frequently, and the solder slag does not stick to the furnace wall and rectifier mesh.

7.It can reduce the frequency of tin slag cleaning and equipment maintenance by 50%;

8.No change in any process, no other energy consumption;

9.It does not occupy the production area, the investment amount is small, and the economic benefits are high;

10.Fully compliant with the (RoHS) Directive 2002 95 EC;

11.It is suitable for all kinds of soldering processes, including (wave furnace, hand immersion tin furnace, anti-oxidation tin bar and other tin dissolving equipment).

Fourth, improve quality:

1. Good fluidity during welding;

2. Good heat resistance, which can save 5% of power consumption;

3. There is very little residue on the melting surface of the solder;

4. Enhance the effect of welding strength;

5. Improve wettability and diffusion.

Summary. Hello, glad to answer for you.

Let's say a simple way:

After the solder and charcoal powder are fully mixed, they are heated and calcined in a closed environment as much as possible (to prevent secondary oxidation).

The principle is similar to that of ironmaking.

I haven't done it specifically, but the principle is the same, and I don't know what the specific process feasibility is.

However, this step is relatively simple and does not require purification.

Dissolving with acid, substitution or electrolysis requires a separation and purification step, which is more difficult.

How to restore solder dross?

Hello dear, this question is being answered for you, you need to wait patiently for about three minutes, the answer will be revealed for you immediately, please don't worry!

Hello, glad to answer for you.

Let's say a simple way:

After the solder and charcoal powder are fully mixed, they are heated and calcined in a closed environment as much as possible (to prevent secondary oxidation).

The principle is similar to that of ironmaking.

I haven't done it specifically, but the principle is the same, and I don't know what the specific process feasibility is.

However, this step is relatively simple and does not require purification.

Dissolving with acid, substitution or electrolysis requires a separation and purification step, which is more difficult.

I hope the above is helpful to you If you are satisfied with me, please give a follow-up and like

Summary. Expand: Coke is a type of solid fuel.

It is obtained by dry distillation of coal at a high temperature of about 1000 °C. The main component is fixed carbon, followed by ash, which contains very little volatile matter and sulfur. Silvery-grey with a metallic luster.

Hard and porous. Its calorific value is mostly 26380 31400 kJ kg (6300 7500 kcal kg). According to different uses, there are three categories: metallurgical coke, foundry coke and chemical coke.

According to the size, there are block coke, broken coke and scorched chips. It is mainly used for smelting steel or other metals, and can also be used as a raw material for the manufacture of water gas, gasification and chemical industry.

Dear, I'm glad to answer for you: the best reducing agent for tin smelting is coke. SNo2 ( S ) 2C(S) ==sn(s) 2Co(g) , the change of the amount of noise that can be impulsed in the process of anti-height.

Hello! How to extract the pot of zinc smelting slag containing tin.

Extended information: Coke is a kind of solid fuel. It is obtained by dry distillation of coal at a high temperature of about 1000 °C.

The main component is fixed carbon, followed by ash, which contains very little volatile matter and sulfur. Silvery-grey with a metallic luster. Hard and porous.

Its calorific value is mostly 26380 31400 kJ kg (6300 7500 kcal kg). According to different uses, there are three categories: metallurgical coke, foundry coke and chemical coke. According to the size, there are block coke, broken coke and scorched chips.

The main residue is used in the smelting of iron and steel or other metals, and can also be used as a raw material for the manufacture of water gas, gasification and chemical industry.

The zinc smelting water slag is crushed and crushed, and then the crushed water slag is mixed with a reducing agent (such as charcoal, coke, etc.) and then reduced.

After the reaction, it is cooled, and then filtered or centrifuged to obtain a solid precipitate containing tin.

Shenzhen Finney's technology tin slag reducing agent product features:

Dissolve on the surface of the molten tin to quickly form a layer of silver-white protective film, isolate the molten tin from the air and minimize the occurrence of oxidation;

Due to the effect of the added lubricating ingredients, the fluidity of the molten tin can be greatly increased, and its wetting ability and solderability can be improved, so as to improve the welding quality;

It meets the requirements of no-clean standards, and the bottom of the board is clean, which will not negatively affect the cleanliness of the PCB, and will not react adversely with flux, solder and various materials on the PCB;

Comply with RoHS environmental protection standards and can be adapted to lead-free production processes;

The continuous effective life is long, and the validity period is usually about 4 hours after one addition;

Stable performance, can withstand up to 360 degrees immersion tin temperature;

It can not only prevent the occurrence of oxidation, but also has excellent reducing ability to the formed solder slag, so it is far better than other ordinary products with antioxidant effect or reduction effect, and the effect is about 50% better than similar products of general manufacturers. Under the premise of correct operation, the amount of solder dross can be reduced to less than 1 kg for 8 hours (different equipment, different materials, different production conditions, etc. will be different).

It is not only suitable for the production line to control the generation of solder slag, but also suitable for centralized reduction treatment of collected solder slag;

It is smokeless, odorless, spark-free, and will naturally evaporate and consume without residue, so there is no need for any additional cleaning after use.

Advantages of solder dross reducing agent:

1.Improve the activity of flux and reduce oxidation and carbide causes.

2.Improve the wettability and fluidity of the solder The yield of the solder joint is improved, and the carbide is coated to prevent it from flowing into the solder.

3.Stabilize the solder temperature Reduce the number of solder injections and avoid unstable solder temperature when heating.

4.Removes harmful impurities, reduces solder cohesion, and coats carbides and other harmful heavy metals to make solder cleaner.

5.Reduction of copper ions The impurities of the solder in wave soldering are mainly due to the copper leaching of the pads on the PCB, and excessive copper will lead to an increase in soldering defects.

Solder slag reduction powder is used to reduce the collected solder slag, so that users can save the amount of tin bars, thereby saving costs and improving benefits. Solder antioxidant is used to reduce the generation of solder dross, isolate the molten tin from the air to prevent oxidation, reduce the frequency of wave soldering or solder pot maintenance and the number of cleaning of solder dross, and ensure maximum production capacity.

It is a chemical substance that reduces the solder dross produced by DIP during the soldering process, and the solvent is more effective than powder. Whether it is used to save money or waste it, everyone has their own ruler.

Foshan Chentai solder antioxidant is very effective in our company, and it saves a lot of solder slag after use.

Shenzhen Finney's science and technology mars-slag antioxidant reducing agent product advantages:

a.Non-flammable, non-corrosive, non-sticky.

b.Almost smokeless, tasteless, halogen-free, does not contain any heavy metal components and complies with RoHS

c.Excellent high temperature resistance (no flash point) and volatile resistance (almost non-volatile).

d.Does not change the active composition of the solder; No contamination of the PCBA, no need to worry about clogging the nozzle or impeller.

e.The reduction rate is as high as 90%, which effectively improves the product quality and the utilization rate of solder.

f.Reduce the oxygen content in the solder, enhance the fluidity of the solder, and effectively help the soldering of PCBA.

h.The residue after the reaction is mud-like, non-viscous, brittle, and soluble in water, which is conducive to the daily maintenance and maintenance of the equipment.

i.The residue after the reaction can be hydrolyzed or biodegraded; Truly save energy and reduce consumption for enterprises from the perspective of environmental protection.

j.The products have passed the testing and certification of SGS, MSDS, SIR, STIR, slicing, etc., and belong to Hu Yuchuan environmental protection and energy-saving products.

In the regeneration process of MARS-solder antioxidant reducing agent, the liquid coating chemical displacement reaction reduction method was successfully adopted. This reducing agent is a non-toxic organic material, a biodegradable substance, and its own and oxides are harmless to humans and the environment. On the one hand, the temperature control is relatively lower than that of the solder reduction machine at a high temperature of more than 400; On the other hand, the surface covering of the liquid reducing agent also effectively inhibits the escape of lead smoke. It not only effectively reduces the lead and tin oxides in the solder slag, but also effectively avoids the environmental pollution of residues and lead fumes.

According to Flextronics' evaluation report, the solder savings are 38% after deducting the cost of using the trouser mold and the cost of exchanging solder dross for tin bars.

The dross reducing agent is a reducing agent used in the production line, which is actively reflected in order to reduce the oxidation of the product at the expense of oneself.

Antioxidant powder is similar to iron powder antioxidant, in fact, in order to passively absorb oxygen in the air, or form a film of tin oxide to organize the product to contact with oxygen, to achieve the purpose of antioxidation.

The effect on the product, one is similar to a preservative, and the other is similar to a positive empty packaging

One is reductive, which is mainly the reduction of oxidized tin by displacement reaction. The reducing agent is a liquid, and the reducing powder is solid.

Antioxidant powder, by reducing oxidation and preventing oxidation, can reduce the production of tin oxide and reduce the production of tin slag, and also has antioxidants.

Zhuoli Electronics 137 is specialized in 9029 antioxidant reduction agent 7886, you can contact them if you need it. Above are their mobile phone numbers.

Details I have in the space.

The solder slag reduction powder is dissolved on the surface of the molten tin and quickly forms a silvery-white protective film, which isolates the molten tin from the air and minimizes the occurrence of oxidation. Due to the effect of the added lubricating ingredients, the fluidity of the molten tin can be greatly increased, and its wetting ability and solderability can be improved, so as to improve the welding quality; It meets the requirements of no-clean standards, and the bottom of the board is clean, which will not negatively affect the cleanliness of the PCB, and will not react adversely with flux, solder and various materials on the PCB; Comply with RoHS environmental protection standards and can be adapted to lead-free production processes; The continuous effective life is long, and the validity period is usually about 4 hours after one addition; Stable performance, can withstand up to 360 degrees immersion tin temperature; It can not only prevent the occurrence of oxidation, but also has excellent reducing ability to the formed solder slag, so it is far better than other ordinary products with antioxidant effect or reduction effect, and the effect is about 50% better than similar products of general manufacturers. Under the premise of correct operation, the amount of solder dross can be reduced to less than 1 kg for 8 hours (different equipment, different materials, different production conditions, etc. will be different). It is not only suitable for the production line to control the generation of solder slag, but also suitable for centralized reduction treatment of collected solder slag; No smoke, no taste, no sparks, will naturally evaporate and consume, will not produce residues, so there is no need to do any additional cleaning after use, solder antioxidant First of all, the solder antioxidant is in contact with the molten brazing filler metal to form a single film on the surface of the molten brazing filler metal to protect the surface brazing metal from oxidation, and secondly, the active ingredients in it react with the metal oxide and make them dissolved in the active agent, suspended as organometallic compounds between the metal oxide particles and the residual active agent.

The cleaning cycle is typically 24 hours over time until the activator is consumed and removed.

The active agent does not react with metals, only reacts with oxidation slag, and is less smoke and tasteless. When the metal oxides in the tin oxide dross are dissolved, the interconnected metal oxide arrangement is open, and any useful metal trapped in the slag can be dispersed back into the molten tin and will not be affected by the active agent.