Pulverizers are machines that pulverize large solid materials to the required size. Pulverizer Machine,Crushing Machine,Milling Machine,Grinding Mill, Grinding Machine JIANGYIN CITY XUAN TENG MACHINERY EQUIPMENT CO.,LTD , https://www.xuantengmachine.com
The correct plasma pressure and flow are very important for the life of the consumables. If the pressure is too high, the life of the electrode will be greatly reduced; air pressure is too low, the life of the nozzle will be affected.
2. Use a reasonable cutting distance
According to the requirements of the instruction manual, a reasonable cutting distance is adopted, and the cutting distance is the distance between the cutting nozzle and the surface of the workpiece. When perforating, the normal cutting distance of 2 times or the maximum height that can be transmitted by the plasma arc is adopted as far as possible.
3. Perforation thickness should be within the allowable range of the machine system
Cutting machine can not be perforated over the working thickness of the steel plate, the usual perforation thickness is 1/2 of the normal cutting thickness
Do not overload the nozzle
Overloading the nozzle (ie, exceeding the operating current of the nozzle) will cause the nozzle to quickly deteriorate. The current intensity should be 95% of the operating current of the nozzle. For example, the current intensity of a 100A nozzle should be set to 95A.
5. Keep the plasma gas dry and clean
The plasma system needs dry and clean plasma gas to work properly. Dirty gas is usually a problem with gas compression systems. It will shorten the life of consumables and cause abnormal damage. The method for testing the gas quality is to set the torch in the test state, put a mirror under it and consume the gas in the torch. If moisture and mist appear on the mirror, you need to find out the reason and correct it.
6. Cutting should start from the edge
Cut as much as possible from the edge instead of piercing the cut. Using the edge as a starting point will prolong the life of the consumable. The correct method is to align the nozzle directly at the edge of the workpiece and then start the plasma arc.
7. Avoid plasma arc extension
If the plasma arc can only reach the surface of the workpiece when it is extended and extended, the plasma arc will produce such stretching and expansion at the beginning and the end of the cutting, which will cause abnormal damage to the nozzle. This problem can be avoided if the right edge start technique is used and the appropriate “off-of-arc†signal time is chosen.
8. Reduce unnecessary arcing (or arcing) time
At the start of arcing, the consumption of nozzles and electrodes is very fast. Before starting, the torch should be placed within the walking distance of the cutting metal.
9. Apply splash-proof chemical paint on protective shell
Splash-proof chemical coatings help to reduce slag deposits on the protective shell. However, be sure to remove the protective shell from the torch before applying paint.
10. Remove the slag from the protective shell
The slag on the torch shield should always be removed, otherwise the slag will cause a destructive heavy plasma arc.
11. Remove gas after replacing consumables
After replacing the consumable or after a long period of shutdown, the gas should be removed (2-3 minutes is appropriate) to ensure that water and mist are removed from the torch.
12. Try to keep the torch and consumables clean
Any dirt on the torch and consumables can greatly affect the energy of the plasma system. When replacing the consumables, they should be placed on a clean flannel. Always check the connection thread of the torch and clean the electrode contact surfaces and nozzles with hydrogen peroxide-based detergent.
13. Remove Oxygen from Air or Oxygen Nozzles
When air or oxygen plasma is used, oxides are deposited in the nozzle. This oxide can affect airflow and reduce the life of consumables. Wipe the inside of the nozzle with a clean fleece to eliminate oxides.
14. Using softened water to inject the cutting torch
Hard water can cause metal impurities to settle on the nozzle ring, which will affect airflow flow, reduce torch quality, and shorten the life of consumable parts.
15. Check airflow and cooling flow daily
One of the most common causes of damage to the torch is the lack of cooling flow, the need to constantly check the gas flow to the torch and air pressure (if air cooling) or coolant (if water cooling), if you find that the air flow is not enough or leak, you should immediately stop the exclusion malfunction.
According to the size of the crushed material or the crushed material, the mill can be divided into coarse crusher, medium crusher, fine mill and superfine mill. There are four kinds of external forces applied to the solid in the grinding process: pressing, cutting, impact and grinding. Press rolling is mainly used in coarse and medium crushing, suitable for the crushing of hard materials and bulk materials. Shearing is mainly used in fine crushing, suitable for the crushing of ductile materials. Impact is mainly used in medium crushing, fine grinding, ultrafine grinding, suitable for crushing brittle materials. Grinding mainly in fine grinding, ultrafine grinding, suitable for small pieces and fine particles.
The crusher makes use of the high speed relative motion of the movable tooth plate and the fixed tooth plate, so that the crushed object can be crushed by the comprehensive action of tooth impact, friction and the impact between the materials. The crusher is suitable for crushing Chinese herbs, precious medicinal materials, ores and chemical raw materials in small batches in various varieties, alloys, metallurgy, geology, scientific research and other units.
The pulverizer machine has the advantages of simple structure, solid, stable operation and good crushing effect. The pulverized material can be discharged directly from the grinding chamber of the main machine. The particle size can be obtained by replacing the mesh screen with different aperture. The powder collecting chamber adopts the completely closed silencer structure, which can effectively reduce the working noise. In addition the machine is all stainless steel. The inner wall of the casing is machined to achieve smooth surface, which changes the phenomenon of rough inner wall and powder accumulation of the previous models, so that the production of drugs, food, chemical industry and so on is more in line with national standards and meet the requirements of GMP.
Talking about how to prolong the service life of plasma consumables
1. Ensure the correct gas pressure and flow of plasma