The conditions for choosing a billet mass the manufacture of an ring part on automated ring-rolling complex, features heating billets in line and heat treatment manufactured parts are considered. expediency differentiated assignment tolerances rings’ sizes after rolling, depending their type, subsequent mechanical operation, is substantiated. Attention focused need to design technology with con...

Steel is mainly produced through continuous casting; molten steel flows into the mold from tundish, where it cools and then enters secondary cooling zone, ultimately solidifying a billet. During casting production process, quality of billet related to lubrication state coated slag. In upper part mold, consumption liquid protective slag directly affects friction initial solidified shell. Therefo...

The analysis of complex technology for TMZ-450D diesel cylinder machining is presented. It emphasized that a billet has heterogeneous structure and why it in need ageing. proved equipment rigidity an acting engineering process insufficient the compensation hereditary defects. New with high offered introduced.

Broadcast encryption provides a convenient method to distribute digital content to subscribers over an insecure broadcast channel. Traitor tracing is needed because some users may give out their decryption keys to construct pirate decoders. There are many traitor tracing schemes based on collusion secure codes and identifiable parent property codes. However, these schemes are subject to public ...