These type of chains are used in Cement Industries for handling hot clinker.
These Chains are fitted with “Out-Board” Rollers.
These chains are of longer pitch with double strand & are meant for Heavy duty services of high yield strength & to withstand the heavy shock loads.
Links are with locking arrangement to avoid overlapping due to long pitch. Maximum chain strength & wear resistance is achieved by selecting proper material & adequate heat-treatment processes.
Chain links are made from Medium Carbon / Alloy Steel. These links are subjected to operations like Blanking & fine boring, which are carried out on highly precision machines. The link hole size & finishing is controlled to suit adequate interference fit. Further links are hardened & tempered to avoid linear elongation to get better impact strength followed by shot peening process to improve the fatigue strength.
Special Alloy Steel is used for Pins & Bushes with Case Carburized Hardening & Tempering process to get the maximum wear resistance & core strength.
Medium Carbon Steel is used for Rollers with Volume Hardening & Tempering Process, further Rollers ID & OD are subjected to Induction Hardening & Tempering for proper Case Depth to achieve maximum wear life.
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