WEBAug 12, 2021 · Some of the mills have also tried using high speed steel (HSS) rolls at initial stands. Wear resistance of HSS rolls have been found 3 to 4 times superior than that of HiCr rolls . Appliion of HSS or semiHSS work rolls in roughing mills is also found beneficial over chromium steel rolls . However, there are some limitations in using HSS .
WEBOct 1, 2004 · Hot strip mill working rolls have to withstand extreme service conditions. On exiting the reheating furnaces, the slab temperature is about 1250 °C. During rolling, due to contact with the strip, the roll surface heats up from 50° to 80° (stationary conditions) to very high temperatures (500–600 °C in the initial stands) in only one ...
WEBAug 9, 2022 · The traditional production process adopts roll body cold sanding, bottom injection, and normalizing and tempering heat treatment. It is mainly used for the production of carbon steel rolls and ordinary alloy cast steel rolls used in ordinary 3high section steel rolling mills and double bar and wire rod rolling mills.
WEBKOCKS Cemented Carbide Roll Rings. KOCKS Cemented Carbide Roll Rings for KOCKS threeroll mill to replace the original ballmilling of cast iron roll ring are mainly used for the production of bearing steel, spring steel alloy steel and other special steel. The steel surface and tolerance controls are clearly better than using other cast iron ...
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WEBJul 1, 2002 · The calculating results sho: The control ability of mill is relative greater when HSS rolls are used at F4, the advantages of HSS roll are not taken fully if HSS rolls work at F1 and F2.
WEBMar 4, 2021 · High carbon highspeed steel roll (HSS roll for short) is a hot rolling roll material with the shortest time, the fastest development and the widest appliion prospect. Since it came out in Japan in 1988, it has been widely used in hot strip roughing mill, hot strip finishing mill, cold strip mill, steel tube mill, section mill, and bar and ...
WEBJan 1, 2003 · The SEMI HSS rolls are used in hot rolling mills, but it is supposed that they can be used also in cold rolling mills, where the decisive property is the level of hardness and the content of the ...
WEBWork rolls, Backup rolls LMM GROUP is one of the professional roll manufacturing base in China, which supply all kinds of largesize rolls for iron and steel enterprises with production capacity of 100,000 tons of all kinds of hot strip mill rolls, section mil rolls, rod mil rolls, cold rolling m rolls, casting and forging backup rolls.
WEBThe trial data shows that the ∮370mm highspeed steel roll produced by LMMGROUP has far exceeded the singlegroove assessment value of 1,500 tons in the "Roll Ordering Technical Agreement", and the effect is good. On September 10, 2015, in the rolling process of the steel rolling mill, the LMMGROUP highspeed steel bar rolling experiment ...
WEBThe HSS Roll has good thermal stability、 high hardness and good wear resistance. 3. Forming oxide film during use working process,improve wearresistant、 the strength of the roll neck is high. ... Cold strip mill rolls: 20,000 ton; Hot strip mill rolls: 45,000ton; Other rolls: 15,000 ton; We Are Your Reliable Partner. BEEKAY LAB JSR From ...
WEBHighspeed steel rolls; HighChromium steel rolls; Semi – steel rolls; Graphite steel rolls; Centrifugal cast iron rolls; Bainite ductile cast iron rolls; Alloy chilled cast iron rolls; Pearlitic ductile cast iron rolls; Alloy cast steel rolls; Cold Rolling Strip Mill Rolls – forged rolls; Work rolls and backup rolls; Tungsten carbide roll ring
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WEBSemihigh speed steel rolls . Backup Roll Back ... is about 40,000t,conventional mill roll is about 20,000t and the casting back up roll is 20,000t as well as 10,000t for cold rolling mill work roll with some grinding ball. ... computer control for strip mill rollmaking from Davy Roll of Union Electric Steel USA to produce the largesize HSS ...
WEBhss rolls. The microstructure consists of tempered bainitic / martensitic matrix with primary and secondary carbides. Primary carbides MC, M7C3, M6C and M2C are originated during the eutectic solidifiion. Secondary carbides are precipitated during the High Temperature quench and tempering. The rolls are cast with the right structure to ...
WEBNov 6, 2021 · Highspeed steel (HSS) and semihighspeed steel (semiHSS) are used to manufacture the outer part of work rolls for hot roll mills. The typical microstructure of HSS grade is made of a tempered martensite matrix which contains three primary eutectic carbides (about 9–15 vol.% fraction) due to the presence of Cr, Mo, and V []: MC, M 2 C, .
WEBFrom hot to cold covering a wide variety of needs Union Electric Åkers supplies rolls to some of the world's leading aluminum mills. We were the first roll manufacturer to introduce the 5% Cr and 10% Cr semi HSS grade with considerably improved performance for the hot mill process.
WEBHighspeed steel rolls generally have a singlegroove (time) steel passing capacity that is 3 to 5 times that of highnickelchromium rolls. The single groove (times) has a high amount of steel, which saves the time for roll changing, improves the operation rate of the rolling mill, reduces the consumption of rolls, reduces the production cost, and improves the .
WEBCasting rolls. Founded in 2007, LMM GROUP mainly produces all kinds of metallurgical rolls for various types of steel, bar, highspeed wire and strip hot and cold plate and strip rolling mills. The company covers an area of 100,000 square meters, including two complete production lines for cast rolls and forged steel rolls, processing workshops ...
WEBMaterial range shall include nodular iron, cast steel, adamite steel, centrifugal casting, ICDP, HiCr, HSS, SemiHSS. For forged roll quality, we supply work rolls to cold mills as well as backup rolls to both hot strip mills and cold mills in steel, aluminum and stainless steel industries. Common material shall be in 3Cr and 5Cr qualities.
WEBApr 7, 2022 · LMM GROUP main products focus on the cold and hot plate wide strip mill rolls and heavy section mill rolls and big casting forging pieces. ... Cast steel mill rolls Alloy cast steel rolls; Semisteel roller; ... Product advantage. The world No. 1 in crude steel production steel plant, over 70% of the HSS for bar and wire are from us. LMM ...
WEBThere are two production lines of rolls in the company. One is the production line of centrifugal cast work rolls for hot strip mills and wide heavy plate mills, which can produce all kinds of centrifugal rolls from φ400×2000mm to φ1600×10000mm, covering the material of ICDP, high chromium iron, high chromium steel, HSS, semiHSS, with the .
WEBSemi Hss Cold Mill Work Rolls greenrevolutionorginForged rolls Sorbit. mesin penghancur batu >semi hss cold mill rolls Cold mill work rollsAkers Group SalinanExtensive range This market segment covers forged work rolls and 4HI / 6HI cold rolling mills Forged steel rolls HSS steels PM steels as rolls • Forged steel rolls for 4HI .
WEBSemi HSS rolls ; Forged Steel Rolls for Hot Rolling Mills ; Forged Steel Rolls for Cold Rolling Mills ; Oxygen Lance ; Guide ; Forging ; Coupling ; Refractories ; Copper Mould ; ... Rolling Mill Rolls. HKT supply all kinds of casted .
WES Rolls are successfully replacing other conventionalrolls which were till date being used in bar mills, structural mills and strip mills. Since the Hss Rollshave a longer product life the mills using these rolls vouch for lower roll costs per tonne, less mill downtime in turn an increase in overall advantages are ...
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