How to use the engine of Ito gasoline generator set

The engine should avoid prolonged idle speed and operation below 50% of rated power, because the engine is idle for a long time or with low load, so that the fuel injected into the cylinder cannot be completely burned, which will cause carbon deposition, thus clogging the injector nozzle and the piston. Ring and may make the valve stuck. It also easily causes the turbocharger oil to leak into the compressor and cause the exhaust pipe to spray oil.
If the temperature of the engine coolant becomes too low, some unburned gasoline will dilute the oil on the cylinder walls and affect the quality of the lubricant in the crankcase to deteriorate, causing all moving parts in the generator to be affected by poor lubrication. . If the engine is not in use, stop it. Note: Any component failure, such as sudden increase in oil temperature due to increased load, sudden drop in oil pressure, abnormal sound, etc., should be immediately shut down for inspection.
The normal use of parking before the engine needs to idle for 3 to 5 minutes, so that lubricants and cooling water away from the combustion chamber, bearings and shafts and other parts of the heat, which is particularly important for turbocharged engines. In case of non-special circumstances, no sudden stop is allowed to prevent the supercharger bearing from being overheated due to supercharger overheating.
Always use the engine immediately after the stop to monitor whether there is a rubbing noise between the impeller and the housing of the turbocharger. If there is rubbing noise, remove the turbocharger and check by the professional to confirm whether the bearing clearance of the turbocharger is normal. Note: If the engine is operating in a cold climate, if no antifreeze is used, turn on all the drain switches on the engine after the shutdown is not working, and drain the cylinder block, cylinder head, water tank, cooling water in the oil cooler, and other devices. Cooling water inside the water-cooled attachment to prevent damage to the engine due to freezing.
The sealing of the engine's intake and exhaust lines must be maintained, while the performance of the gasoline engine will be affected. Always check if the nuts or bolts are loosened, if the pipe joints are tight, and if the gasket leaks. Note: When the gasoline engine is matched with the working machine, the load power should be matched properly. It is strictly forbidden that the load power is too large or too small. If the long-term overload operation is matched, the reliability of the gasoline engine will be reduced and the service life will be reduced; however, if the load power is too low, the long-term operation is required. Gasoline engine can not be fully used, but also easily lead to engine oil and a series of faults mentioned above.
 
Oil machine power output
Ito series gasoline engine output power from the flywheel end, and use the SAE interface to drive the working machinery, when used, it is forbidden to directly install the belt pulley at the flywheel end, drag the machine tool laterally, because this output power can easily cause the crankshaft and the main bearing to directly bear the lateral force and damage .
The front end of the crankshaft of the gasoline engine can output part of the power, and its maximum output power is not more than 50kW. However, at this time, driveshaft bearings, clutches, etc. should be installed between the front axle and the driven equipment. If it is a direct drag, it must not exceed llkW so as not to damage the main bearing and the transmission gear of the gasoline engine. For models with fans, it is never allowed to drive the machine directly by dragging it directly.
The user must take care that the gasoline engine is not allowed to start with a load. Therefore, a clutch device should be provided between the gasoline engine and a load device that cannot operate without its own load, and the gasoline engine should be started when the clutch is disengaged.
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Shanghai Ito Power Co., Ltd. Main : Ito Gasoline Generator , Ito Diesel Generator , Ito Small Pump , Ito Digital Generator , Ito Electric Welding Machine

Tungsten Carbide Roller

Tungsten carbide roller has characteristics of good wear resistance, high temperature red hardness, thermal fatigue resistance and thermal conductivity and high strength , have been widely used in high-speed wire rod, bar, rebar, seamless steel tubes, etc. Domestic production of tungsten carbide roller materials mostly WC- Co, WC- Co- Ni- Cr two series, and the content of Co, Co- Ni - Cr is in the range of 6wt% ~ 30wt%. From the use of perspective, tungsten carbide rollers has good mechanical properties, its flexural strength up to 2200 MPa or more, shock toughness up (4 ~ 6) × 10^6 J/ m^2, Rockwell hardness (HRA) is up to 78 to 90, widely in the high-speed wire rod rolling process, which is much higher than single-slot chilled cast steel or high speed steel rolls.Tungsten carbide is made of Tungsten Carbide Powder and binder phase (such as drilling, nickel, etc.), and then pressing and sintering, regardless of the conditions under cold rolled or hot rolled has excellent wear resistance, tungsten carbide rollers has been widely used in pre-finishing mill and finishing of high-speed wire rod currently. On the performance of tungsten carbide roller in hot-rolling wire rod , the material must meet the following requirements:
1. Sufficient anti-fracture strength;
2. Good abrasion resistance;
3. The smooth surface finish;
4. Excellent corrosion resistance, thermal fatigue, thermal cracking performance.
Tungsten carbide roller rings can working in bad conditions , small profile rolling (especially rebar rolling) process conditions is harsher than the high-speed wire rod, and therefore corresponds to the profile rolling ,tungsten carbide rollers recommend using high binder phase carbide.

Tungsten carbide roller material design
Pre-finishing all vehicles roller should ensure its high toughness, strength, rigidity and thermal conductivity, followed before considering its wear resistance. When designing each vehicles roller, pre-finishing materials should choose carbide grades of Co, Co- Ni- Cr binder content is high (greater than or equal to 25wt%) , requiring an average WC grain size of coarse (5μm ~ 6μm), to obtain a higher shock toughness, proper strength and hardness. For the finishing of the roller movements, particularly the last two rollers of the finish rolling, which suffered load is small, and high relative velocity of the material to be pressed (80 m / min ~ 120 m / min). In this case, the wear resistance of the roller to be the most important requirements, and must ensure the strength , timpact toughness and hardness of a reasonable match, so the binder of Co / Ni content ratio and the average grain WC control of particle size and other factors must have greater control in front of different pre-finishing rolling roll.

Tungsten carbide roller category
According to the structure of tungsten carbide rollers, it can be divided into solid tungsten carbide roller and composite tungsten carbide roller. Solid tungsten carbide rollers have been widely used in pre-finishing and finishing stands high speed wire rod mill (including fixed reducing the rack, pinch roller rack). Composite tungsten carbide roller is made of cemented carbide and other materials, and it can be divided into tungsten carbide composite roll rings and solid tungsten carbide composite roller. Tungsten carbide composite roll rings mounted on the roller shaft; solid tungsten carbide composite roller will be directly cast in the roll axis to form a whole, a large load is applied to the rolling mill.

Tungsten carbide roller production process control
Tungsten carbide rollers produced by powder metallurgy method, the key to its process control is the chemical composition of the material and the mixture was prepared, pressed molding, sintering and deep processing and other preparation process parameters.
1. Preparation of starting material (WC focus quality): As the WC raw material and quality control of the use of different levels of quality may fluctuate, resulting in adverse effects on microstructure.
2. Preparation of the mixture: Mixture preparation is the key to the production process of the roller, the roller of failure modes - trachoma, mainly generated by this procedure.
3. Pressing: roller pressing is an important process of the roller mill.
4. Sintering: roller sintering is to determine the final quality of the roller production processes, use of advanced low-pressure sintering technology, HIP sintering technology can greatly improve the performance of roller.
5. Deep processing: deep processing rollers have a greater impact on the quality and accuracy of the roller surface.

Carbide Roller,Carbide Ring,Mill of Rolling Line,Steel Wire Rod,Mill Rolling Finish Stand,Mill Roller Groove Type

Luoyang Golden Egret Geotools Co., Ltd , https://www.xtchvaf.com

July 02, 2023