During the operation of the heavy wrecker, pay attention to the water temperature table, and the normal water temperature of the engine should be maintained between 80°C and 90°C. If it is too high or insufficient, the fuel consumption of heavy wreckers will increase. Special attention should be paid to the fact that if the wrecker tank water level is insufficient, the water temperature will quickly rise. If the water temperature exceeds 95°C, the wrecker's fuel consumption will increase by 30% to 40% compared with the normal temperature, and it will easily lead to clearing. The car's parts are worn and damaged. Regularly check the level of oil and lubricating oil on the road wrecker, and change the oil and lubricant according to the schedule. In addition, the correct maintenance of the wrecker engine, select the provisions of the brand of authentic oil, timely removal of wrecker car cylinder combustion chamber and the spark plug of the plot, found that the problem is ruled out at any time, even if it is a small fault, they will reduce the engine's power, waste of fuel . Regular replacement of air and oil filters will affect the fuel consumption of wreckers.
If you feel that the wrecker is not powered up, stop to see if there is a leak in the tire. If the tire pressure is too low, the fuel consumption will increase significantly. Keep the balance of the tires, check the tire's pattern from time to time to see if there is any uneven wear. At the same time to see if there is no sharp object embedded in the tire and cause a gradual leak. Always check the pressure of the wrecker tires to keep them in the best condition. Not enough gas or too much gas will increase fuel consumption. Therefore, tire pressure should be checked regularly. As long as there is one tire less 4kPa, this tire will reduce the life of 10,000km, and will increase the total fuel consumption of heavy wrecker.
Some of the above-mentioned heavy-duty wrecker fuel-saving techniques are based on years of experience gained by the Xiagong Chusheng Wrecker Factory. It is not denied that there are other ways to reduce fuel consumption, which is not explained here.
Description
The Resin Sand Casting equipment consists of shell core machine,core shooter,casting machine,advanced coated sand formula and manufacturing technique.
This sand casting process is suitable for the production of cars,tractors and hydraulic parts.The molding materials include copper,iron and steel.
The surface of the sand is covered with a layer of solid resin molding sand or core sand before molding and core making,called coated sand.It was the first thermosetting resin sand.The precoated sand casting is a kind of casting process to put the roughing sand,resin and curing agent into sandbox after mixing evenly,and then molding and core making in the mold,finally pouring after mold closing.
Features of Coated Sand Casting Process
- Adopting advanced resin sand casting technology,we can professionally produce various types of non-ferrous casting products with complex shape and high inherent quality.
- The precoated sand casting products have many advantages of high dimensional accuracy,small machining allowance and high smooth finish.
- Other characteristics of the non-ferrous casting products include pore-free,no voids,good heat stability,excellent thermal conductivity and low expansion.
- The sand casting process can meet the customer requirements of the comprehensive mechanical properties.
Application of Resin Sand Casting
The precoated sand casting is a molding method,which attaches sand or other refractory materials to the prefabricated master batch,forms a cavity by sintering,and than injected into the molten metal and cooling.The sand casting process is mainly used for producing artwork and complex castings with high precision,such as engine and pump valve.
Technical Process
The resin sand casting is to mix the powdery thermosetting phenolic resin with raw sand,and then solidify after heating.Now it uses thermoplastic phenolic resin and latent curing agent (like urotropine) with a lubricant (such as calcium stearate) to form coated sand by sand casting process.When heated the resin wrapped in the surface of the sand is melting,under the action of the methylene decomposed from the urotropine,the molten resin rapidly transforms the linear structure into body structure,thus making the coated and curing.The suitable equipment is hot core box molding machine.The waste sand regeneration can not use mechanical regenerative way,so it should be subjected to 700℃ high temperature melting.The regeneration cost is higher,but the expansion coefficient of the regenerated sand is small and the performance is better than new sand.
Resin Sand Casting
Resin Sand Casting, Resin Bonded Sand Casting
QINGYUN HUIHUANG EXACT CASTING CO.,LTD , http://www.sdhhcasting.com