Регистриран на: 01 Юни 2017
|Пуснато на: Пет 12 Яну, 2018 5:45 am Заглавие: Custom SGLX L shaped blank type oilless slide guide bushing
|Centrifugal casting speed choice:
①SGLX L shaped blank type oilless slide guide casting speed should ensure that the copper liquid into the mold, the formation of centrifugal force under the cylinder.
② the full use of the role of centrifugal force to ensure a good quality of the casting of the internal.
③ centrifugal casting method using centrifugal casting copper sleeve can make full use of centrifugal force to play the filling capacity of copper and fill casting capacity.
When the use of copper sets of the best results? Copper copper sets of the casting process Note: Copper sleeve of the nature of high hardness, excellent wear resistance, not easy to have killed the phenomenon, a better casting performance and cutting performance, in the atmosphere and fresh water in a good resistance Corrosion. Due to the existence of porous copper sleeve when the porous metal structure, in the electroplating process, the process must be strict requirements.
1, the actual surface area of copper than the calculated surface area many times, the impact of plating current density than the average 3 times higher parts, pre-plating time longer than the general part of some.
2, silver, must be charged under the slot, the impact of current density in the shaking of the workpiece under the premise of plating 5min, and then to the normal current density.
3, pre-plated copper,WB800 Harden Bronze Bush, the parts linked together to shake often with what to ensure that the uniform color of the coating to prevent the occurrence of silver-plated pattern when the phenomenon of appearance of the coating quality.
4, the cleaning process to thoroughly, to prevent the residual solution in the pores of the next process.
Is there a difference between a cast copper sleeve and a forged copper sleeve? Casting is the melting of the metal, and then flows into the cavity of a specific shape, after solidification to form a specific shape forging is to heat the metal, but still solid, and then placed on a platform or a specific shape of the mold, Class tools are forged into specific shapes.
Having finished the copper casting, let's go back to the working principle of the copper sleeve: the copper effect on the hollow shaft is also used as a sliding bearing, sliding the friction of the working shaft on the bearing, the lubrication system usually requires extra work . Sliding bearing work smoothly, reliable, no noise. The surface that is not directly in contact with the oil from the sliding surface, but which may also significantly reduce friction and wear, is also isolated under fluid-lubrication conditions and the film also has a vibration-absorbing capacity.
When the use of copper sets of the best results? When the use of copper sets of the best results? Copper sleeve should be used after heat treatment, because the strength of copper, especially plasticity and toughness decreased. For grain refinement, uniform organization and elimination of internal stress, copper sets must be normalized or annealed. Normalized copper, the machine performance after annealing the high cost also becomes low, so the application is very extensive. However, the normalizing treatment results in a large internal force for the comparative annealing and is only applicable to copper pieces having a carbon content of 0.35%. Low-carbon copper plasticity is good, easy to break when cooled. Internal force smaller, copper Zhang Zhenghuo,sliding bearings should also be high-temperature tempering. The carbon content. 0.35%, the complex structure and easy to crack the copper pieces can only be carried out, annealing treatment. Copper pieces should not be quenched, or easily cracked.