Bushes Bushes quality inspection test is based on the quality of castings; casting Figure casting process documents, relevant standards and technical conditions of delivery and acceptance of casting. Bushes casting into casting quality and appearance quality of internal quality castings. Casting appearance quality include; casting dimensional tolerances, surface roughness of casting, casting weight tolerance, Riser remaining amount, casting welding and surface quality defects; casting intrinsic quality include; mechanical properties of castings, chemical properties, chemical composition, microstructure organization, internal defects. In addition, the cast also includes the relevant standards or technical delivery conditions required for a variety of special physical and chemical properties. According to a large pulley, Bushes casting quality test results, usually cast into three categories; qualified, rework and waste. Qualified means that the appearance of quality and compliance with internal quality standards or delivery acceptance casting conditions; rework refers to the appearance of quality and inherent quality does not meet the standards or conditions of delivery and acceptance of casting Bushes manufacturers, but allows repair pulleys, After casting rework to achieve acceptance standards and delivery conditions; we do not allow rework and rework later still not up to standard and acceptance of casting conditions. Casting quality test methods, depending on casting production scale, production methods, the importance of casting, casting process and test the maturity and stability of the project, we can take full inspection and sampling of two different test methods. With regard to the issue of the original motor pulley speed motor one turn, turn 16/18 ring gear namely: 8/9 circle; now one turn the motor, speed reducer turn 20/18 laps European standard Bushes, namely 10/9 If the motor is a standard four-ring motors, assuming its ideal state speed 1500rpm, so when the original speed reducer: 1500x8 / 9 = 1333 rev / min, and now speed reducer: 1500x10 / 9 = 1667 r / min. One minute multi-turn: 334 turn European standard Bushes, Bushes, Hengda machinery provided by the Texas Hengda Machinery Co. Texas Hengda Machinery Co., Ltd. (www.sddzhdjx.com) (www.sddzhdjx.com) strong, credible, in Dezhou machining industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hengda machinery into the brilliant and you work for a better future!