ASME B29.22-2001 pdf download

ASME B29.22-2001 pdf download.DROPFORGEDRIVETILESS CHAINS,SPROGKETEETH DRIVE CHAINVDRIVE DOGS.
The drop forged rivetless chain has widespread use in many industries on trolleys. scraper flights, assembly. and similar conscynes. H.ccausc matciials do not tend to pack in its open stnselure. the drop forged rivclle.ss chain is used extensively For flight conveyors. Its design permits both horitontal and vertical operation over irregular routes, making it particularly acceptable for trolley conseyor service.
2 DEFINITIONS
drop forged chain: chain made from drop forged steel pans that aee heat treated and are proportioned for high strength and comparative light weight. Its simple design permits assembly or dismantling by hand and this chain is available in three general types as illustrated and descnbed (see regular drop forged riieiles,s (haul. X-rvpe chain, and modified X-spe thtkss chain). Numerous attachments are available to suit a wide vuicty of applications including trolley conveyor service.
pin: part forged symmetrically with T-hcads on both ends that lock into the sidthars tsce Fig. I).
regular drop forged riswlc,u chain: chain used for general applications where minimal side flexing is required (see Fig. 2). Attachments are available for mounting on center links or on extended pins.
pan made hh a center panel that acts as a shield to reduce material falling through the link and provides strength. The center panel is provided with a center drainage hole (sec Fig. 3).
X-rvpe chain: chain with greater side-flexing capabilities compared to regular chain (see Figs. 3 and 4).
modified X-vvpe rnetles.c chain: chain with the same feature as X-type see Fig. 4: additiotially, modified X-tvpe has a controlled area, C. on the center link that helps prevent movement of attachments. which may he mounted to the center link see Fig. 5. dimension C.)
3 MINIMUM ULTIMATE TENSILE STRENGTH
Minimum Ultimate Tensile Strength (M.U.T.S.) for chains covered by this Standard, is the minimum force at which an unused, undamaged chain could fail when subjected to a single tensile loading test.
(a) WARNING: The minimum uIlImafr tensile strength is NOT a “wof*ing load.’ The M.U.T.S. greatly exceeds the maximum force that may be applied to the chain,
(b) Test procedure. A tensile force is slowly applied. in uniaxial direction, to the ends of the chain sample.
(c) The tensile rest is a destructive test. Even though the chain may not visibly fail when subjected to the minimum ulumate frusik jirt’e. ii will have been dam• aged and will be unfit for service.
The values adopted for this Standard are for heat- treated medium carbon steel chain only, Medium carbon steels not in the heat-treated condition are not covered by this Standard.
Chains produced of other materials not covered in this Standard (alloys, stainless steel) or by casting or fabricating will ako have significantly different alucs of M.U.T.S.