It is important to know that the shape of the sand has an important impact on the surface finish of the casting. Circular sand is better than triangular sand because the triangular sand has a large gap, which is easy to lead to defects such as porosity; According to the nature of the casting, the sodium silicate quartz sand is selected to form a spalling layer, and combined with the characteristics of cooling and shrinkage of the casting, the surface defects are reduced. Coating a protective layer on the surface of large castings, such as the film on a coated sand mold, can improve the surface finish of the sand mold and reduce the surface defects of the casting.  

በዘመናችን ዘመን ውስጥ የሂደት መሣሪያዎችና የስራ መሳሪያዎች ላይ በጣም ያማርከዋል፡፡ እንደዚህ ያለው የሚያበርክት ውድድር የሰላም ሳይሆን ይፈልዳል፡፡ ይህም ቢወዳድጅ በዚህ ዙርየት እንዳንቀጣ የሚኖረው በመለክአን የሚኖረው በዚህ ዘመን በጣም የተጠቃሚ ነው፡፡ ወይም በመሳሪያ ፖር ቱር ይልቅ በፊት ከዚህ የተነሣ የታዋቅ በብስብስ ይውላል፡፡

Understanding Low-Pressure Martian Atmosphere

(3) If the drilling rig cannot open the hole smoothly, it should first assign the rock drill to retreat, and then let the rock drill move forward to open the hole from the beginning.

185% compressors come equipped with a variety of features that enhance their performance and usability. Typically, these compressors are powered by diesel engines, enabling them to operate efficiently even in remote locations where electricity is not readily available. Their compact size, combined with large pneumatic wheels, makes them easy to transport across construction sites.

(2) If the shaft is different from the stuffing box axis, it is mainly due to processing errors and incorrect installation. Then pay attention to check whether the installation is correct after installation. If the sealing water ring is badly worn, a new water ring needs to be replaced. If the sealing water pipe is blocked, the sealing water cannot enter the middle of the packing, resulting in rapid wear of the packing, resulting in material leakage, you should dredge the blocked water pipe and keep the sealing water clean.

Conclusion

Equipment and Technology

Advantages of DTH Hammer Drilling