wholesale jewelry market in karachi I want to know that precious metals such as platinum, can gold gold, can it be electrolytically polished, what is its loss? Thank you

las vegas jewelry wholesale (2) The daily maintenance of electrolytic polishing fluid
1. After the electrostatic polishing, why does the surface find that the spots or small pieces that seem to be not polished?
The cause analysis: Inadequate oil removal before polishing, oil traces are still attached to the surface.
This solution: Select "Yunqing brand oil removal waxing solution", use 1: 10 water, soak for 5-20 minutes under 60-90 ℃. If you use it for a long time, you should consider replacing the new solution.
2. Why are there gray and black plaques on the surface after polishing?
The cause analysis: The oxidative skin may not be completely removed. There is still an oxide.
This solution: Increase removal of oxide skin, you can use "Yunqing brand stainless steel oxidation clearance liquid", "stainless steel oxidation cream" and other products. Due to the many products of rust removal, the specific applicable products can consult Weihai Yunqing Chemical Development Institute.
3. What are the causes of the corner corrosion of the workpiece and the cutting -edge corrosion of the workpiece?
The cause analysis: The current of the edges and corners and the tip of the tip is too large, or the temperature of the electrolyte is too high, and the polishing time is too long, resulting in excessive dissolution.
This solution: Adjust the current density or solution temperature, or shorten the time. Check the electrode position and set up shielding in the corners.
4. Why is the workpiece lit and dark after polishing?
Analysis: Perhaps the electrochemical polishing solution does not work, or the effect is not obvious.
This solution: Check whether the electrolyte polishing solution is used for too long, the quality decreases, or the proportion of the solution composition is disordered.
5. What is the white stripe on the surface after the workpiece is polished?
The cause analysis: The relative density of the solution is too large, the liquid is too thick, and the relative density is greater than 1.82.
It solution: increase the degree of stirring of the solution. If the relative density of the solution is too large, dilute to 1.72 with water. It is heated for an hour under 90 ~ 100 ℃.
6. Why is there an yin and yang surface on the surface after polishing, and the phenomenon of local luster?
The cause analysis: The location of the workpiece is not opposite to the cathode, or the workpiece is shielded.
This solution: Properly adjust the workpiece to make the workpiece and the position of the cathode appropriate, so that the power distribution is reasonable.
7. After polishing, the surface of the workpiece is flat and smooth, but some or pieces are not bright enough, or vertical -shaped non -shiny stripes appear. What are the causes?
The cause analysis: It may be that the bubbles generated on the surface of the workpiece on the surface of the later period failed to be separated from and attached to the surface or surface with airflow lines.
This solution: increase the current density, increase the amount of gas analysis so that the air bubbles can be attached, or the stirring speed of the solution is increased to increase the flow of the solution.
8. The contact points of parts and hangers have no died and brown spots. What is the reason why the rest of the surface is bright?
The cause analysis: It may be poor contact between parts and hangers, resulting in uneven current distribution, or less contact points of parts and hangers.
This solution: Plim the contact point of the hanging tool, make the conductive good, or increase the contact point area of ​​the parts and the hanging utensils.
9. Some parts of the same groove polished parts are bright, some are not bright, or local are not bright.
The cause analysis: There are too many polishing workpieces in the same groove, resulting in uneven distribution of the current, or overlapping each other between the workpieces and blocking.
This solution: Reduce the number of lither in the same groove, or pay attention to the placement of the workpiece.
10. Why is there silver white spots near the contact point of the concave part and parts of the polished parts and parts and parts?
The cause analysis: It may be that the concave parts of the parts are blocked by the parts itself or hanging utensils.
This solution: Properly change the part of the parts so that the concave part can obtain the distance between the power line or reduce the distance between the electrode or increase the current density.
11. It has been operated strictly in accordance with the process specifications. Why is there more or less corrosion on the surface of the parts after polishing?
The cause analysis: Whether the temperature of the solution is too high or the current density is too large. If there is no problem in the formulation of the solution, and it is strictly operated, it may be a problem of treatment before polishing.
This solution: strictly perform operations before electrochemical polishing, and avoid over -corrosion during the picking process. Do not leave the cleaning water on the surface of the part and bring it into the polishing slot.
12. "Yunqing brand stainless steel universal electrolytic solution" occur for a period of time?
The cause analysis: The surface of the workpiece is not removed, and some oil stains float on the surface of the electrolyte, which brings difficulties to the operation.
The solution: If this has occurred, it is recommended to remove the oil pollution on the surface, and the proposal that does not occur is removed before polishing.
13. What is the relationship between sulfuric acid and phosphate in electrochemical polishing fluid?
The cause analysis: more sulfuric acid, too fast polishing speed, can accelerate the corrosion of the metal substrate, more phosphate, can adsorb a mucous membrane on the surface of the workpiece, decreases brightness, and slower polishing speed. Of course, other factors are not ruled out.
This solution: Adjust the proportion of phosphate sulfate. You can also choose the "Yunqing Various Chromium -free electrolytic additives" formula.
The Weihai Yunqing Song Yanlong Di Xiaofan Chen Qingqing Qin Qiu appoints Yinglibao Haiqin Liu Zhaoli 0631-5621396 5624235 5624236 5624239
14. The surface of the workpiece is not glossy, and there is white spots on the light yellow background. What are the general reasons? caused?
The cause analysis: It may be that the chromic anhydride content in the electrolytic polishing solution is too high, or even more than 1.5%.
This solution: Chromium ions are heavy metal ions, which have carcinogenic effects on the human body, pollute the environment, and can choose chromium -free polishing solution. It is recommended to use "Yunqing brand stainless steel universal electrolyte".
15. What are the main costs of electrolyte costs?
It is electricity, electrolyte, rectifier, electrolytic grooves, polar boards, copper sticks, heating pipes, etc.
16. What is the current density of various materials for stainless steel during electrolytic polishing? What is the relationship with electrolytic costs?
The cause analysis: The density of various materials for stainless steel in the market is: 200 series stainless steel current density between 25-50 amp, 300 series of stainless steel material current density between 15-30 amp The current density of the 400 series stainless steel material is between 30-55 amp.
This solution: You can choose "Yunqing brand stainless steel universal electrolytic solution" 200 series stainless steel material current density between 15-25 amp, 300 series of stainless steel material between 10-15 amp, 400 series stainless steel material in 25 -30 between 30. The greater the current density, the greater the power consumption. In the calculation of electrolytic costs, the proportion of electricity bills is very large.
17. After polishing, wipe it clean and lighter. What is the reason why there is a shadow of light orchid?
The cause analysis: It may be that after the electrochemical polishing fluid is prepared, it does not perform heating and power transfer, or the operating temperature of the solution is low.
The solution: The heating electric polishing solution at 120 ° C or heating the electrolyte to the specified temperature.
18. What causes yellow spots after polishing and yellow spots?
The cause analysis: The relative density of the electrochemical solution may be small, which is less than 1.70.
This solution: Adjust the relative density of the electrical polishing or heated concentration at 80-100 ° C to increase the relative density. Or change the new solution.
It Weihai Yunqing Song Yanlong Di Xiaofan Chen Qingqing Qin Qiu Ren Li Bao Haiqin Liu Zhaoli 0631-5621396 5624235 5624236 5624239
19. After the workpiece is polished, why does brown spots appear from the groove?
The cause analysis: It may be that the electricity is not polished enough, or the time is short.
It solution: First of all, appropriately extend the polishing time. If there is no effect, it may be a problem of insufficient temperature or current density.
20. Why is it easy to fire when electrolyte?
The cause analysis: There are three factors that lead to this phenomenon: one is that the contact point of the hanging and the workpiece is not firm, the other is that the electrolyte density is too low, and the third is that the current density is too high.
This solution: change the connection method of more hooks and workpieces to increase the contact points of the hanging tool and the workpiece as possible. If the density of the electrolyte is too low, the electrolyte can be replaced. It is recommended to use the "Yunqing brand stainless steel universal electrolyte".
21. What is the effect of stainless steel electrolyte operating temperature on electrolytic polishing? What is the best temperature?
The cause analysis: The use temperature of general electrolytes is between 50-90 ° C, the temperature is low, the polishing speed is slow, and the brightness decreases. Excessive temperature, liquid corrosion of the workpiece is accelerated, it is easy to cause the workpiece to corrode, and the effective ingredients of electrolytes are easy to decompose.
This solution: low temperature should be heated to the prescribed temperature. Heating can use various heating pipes (such as quartz, titanium material heating pipe), and the working temperature will rise for a long time. The cooling or cooling cycle can be selected for heat dissipation. The best use temperature is 50-90 ° C, and the optimal use temperature of "Yunqing brand stainless steel universal electrolyte" is 50-80 ° C.
22. The surface of the stainless steel workpiece is uneven, and the numbers are convex. What causes it?
The cause analysis: The surface rust is more corrosive. The electrolyte is only a micro corroded and the level is flat. The more rusty electrolyte cannot be completely removed. If the polishing time is extended, a large amount of iron ion sinks into the bottom of the electrolyte to reduce the service life of the electrolyte.
It solution: remove the rust on the surface of the workpiece. It is recommended to use "Yunqing brand stainless steel activation solution", "rust removal water", "oxidation skin removal liquid" and other products for cleaning and rust removal.
23. What are the main factors affecting electrochemical polishing?
The temperature, time, workpiece material, electrolyte, voltage, current, workpiece placement position.
24. When making stainless steel electrolytic polishing, a layer of light red substances are adsorbed on the surface, and it will have a short time response to the electrolyte again. What is the reason?
Analysis of the cause: The copper ion is used to adsorb the electrolyte to the surface of the anode, which affects the polishing quality. It will react in a short time again because the copper ion on the surface of the workpiece surface is dissolved.
This solution: Titanium hanging utensils are used, baked into a film with a polyvinyl chloride resin in the exposed part of the fixture, scraped off the insulating film at the contact point, and leaked the metal to the conductivity.
25. What is the best area ratio of yin and theodon?
The anode is between 1: 2-3.5.
26. What is the best distance between the two poles?
The best distance between the cathode distance is 10-30 cm.
27. How can Yunqing brand stainless steel universal electrolytic polishing fluid be maintained after aging?
In Yunqing brand stainless steel universal electrolytes can be added (density is 1.84), 6%of the weight of the slot liquid, or refer to 386A • H/L.
28. Not only did they not throw the brightness, but the surface of the workpiece turned black or gray. What was caused by it?
The cause analysis: This phenomenon is generally reversed in the pole. Film layer with poor combination.
This solution: re -connect the positive and negative electrode, connect the anode pole, and the cathode advection.
The telephone number: Weihai Yunqing Song Yanlong Di Xiaofan Chen Qingqing Qinqiu appoints Yibao Haiqin Liu Zhaoli 0631-5621396 5624235 5624236 5624239
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wholesale jewelry 50 minimum Solution? My God. This technical content is very high, why bother to solve it so much? You can polish in the shop. Do you think it is platinum? As long as it is PD900 or more, it is not so stingy.

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