Dab tsi EN 10297-1 npog
EN 10297-1 yog tus qauv European uas qhia txog cov txheej txheem kev xa khoom rau seamless steel raj rau kev siv tshuab thiab kev tsim vaj tsev dav dav. Ntu 1 npog cov hlau uas tsis yog- alloy thiab hlau alloy, thaum tus khub Part 2 npog cov hlab stainless hlau. Cov npe lag luam feem ntau piav qhia tag nrho cov qauv yooj yim xws li cov pa roj carbon steel yeeb nkab, tab sis qib qib tau txuas mus rau qib qis - alloy chromium-molybdenum engineering steels.
Lub ntsiab lus txiav txim siab rau cov neeg yuav khoom yog kev pabcuam. Cov raj rau EN 10297-1 yog cov khoom lag luam engineering: lawv tau ua cov khoom siv los yog siv los ua cov tswv cuab. Lawv tsis yog tsim rau cov kav dej siab rau chav dej, dej lossis cov txheej txheem kev pabcuam, uas tau them los ntawm EN 10216 series. Tubes raug txiav txim los ntawm qib, kev xa khoom, qhov ntev thiab qeb xeem, thiab cov txiaj ntsig tau lees paub rau ntawm daim ntawv tshuaj ntsuam xyuas nrog rau kev xa khoom.
Qib thiab kev xa khoom
Tsab ntawv E nyob rau hauv qib kev xaiv qhia txog engineering steel. Tus lej hais txog qhov tsawg kawg nkaus qhov muaj peev xwm ua tau zoo hauv megapascals, yog li qhov kev xav tau ntawm lub tshuab tseem ceeb yog tsim rau hauv qib npe nws tus kheej.
| Qib | Hom hlau | Lub hauv paus muaj zog | Hom kev siv |
|---|---|---|---|
| E235 | Tsis yog- alloy | Yam tsawg kawg yield zog 235 MPa | Machined vaj tse, thav duab, dav dav engineering qhov chaw |
| E355 | Tsis yog- alloy | Yam tsawg kawg yield zog 355 MPa | Hydraulic thooj voos kheej kheej, thauj khoom -cov kabmob |
| C45 | Tsis yog- alloy, nruab nrab carbon | Tshwj xeeb tom qab quench thiab temper | Shafts, spindles thiab gears tom qab kev kho cua sov |
| 25 CrMo4 | Tsawg- alloy chromium-molybdenum | Tshwj xeeb tom qab quench thiab temper | Siab -lub zog tshuab qhov chaw thiab bushings |
| 34 CrMo4 | Tsawg- alloy chromium-molybdenum | Tshwj xeeb tom qab quench thiab temper | Highly stressed shafts thiab rotating Cheebtsam |
Kev xa khoom yog pom zoo thaum xaj. Cov qib tsis yog- cov qib alloy feem ntau muab raws li - dov, normalized, lossis normalized thiab annealed, thaum nruab nrab -carbon thiab chromium- qib molybdenum feem ntau yog muab quenched thiab tempered kom lub zog thiab cuam tshuam lub zog tau mus txog tom qab kev kho cua sov. Tensile zog, hardness txwv thiab tej yam yuav tsum tau muaj nyob rau hauv tag nrho cov txheej txheem thiab xyuas los ntawm kev ntsuam xyuas ntawm txhua qhov kev soj ntsuam.
Mechanical Requirements thiab Inspection
Tus txheej txheem kho qhov kev sim tensile, kev ntsuam xyuas cuam tshuam thiab hardness yuav tsum tau rau txhua qib thiab kev xa khoom, nrog rau cov tshuaj muaj pes tsawg leeg txwv thiab tso cai cov khoom tsom xam deviations. Cov raj raug kuaj ntau los ntawm ntau, thiab cov qeb xeem tau xaiv ntawm kev txiav txim txiav txim siab qhov piv txwv thiab tus naj npawb ntawm cov kev xeem ntxiv uas siv.
Cov kev xav tau ntxiv tuaj yeem suav nrog tsis yog - kev kuaj xyuas lub cev thiab qhov xaus, qhov ntsuas qhov ntsuas ntawm sab nraud txoj kab uas hla, phab ntsa thickness, ovality, ncaj thiab ntev, thiab kuaj hydrostatic lossis electromagnetic nruj. Vim hais tias engineering tube yog ib txwm machined thoob plaws, tus qauv kuj tswj qhov chaw thiab permissible imperfections kom tig, tho txawv thiab threading ua hauj lwm tsis cuam tshuam.
Yuav ua li cas lub raj yog tsim
EN 10297-1 raj yog seamless. Ib puag ncig lub pob zeb yog pierced thiab dov rau ntawm lub mandrel zeb, ntsaws zeb, los yog nias -thiab-pilger txoj kev, los yog ua los ntawm kub extrusion. Qhov tsis muaj qhov vuam seam ua rau cov phab ntsa zoo ib yam thiab cov qauv hlau tsis sib xws, uas ua rau kev coj tus cwj pwm zoo nyob rau hauv kev ntxhov siab thiab khoov. Tom qab dov, cov hlab yog kho cua sov, ncaj, descaled los ntawm pickling los yog txhaj tshuaj blasting, tsis-destructively soj ntsuam qhov yuav tsum tau, thiab thaum kawg dimensioned thiab cim.
Tsis yog-qib alloy xws li E235 thiab E355 weld yooj yim; tus nqi sib npaug ntawm carbon txiav txim seb puas yuav tsum tau preheating.
Nruab nrab-carbon C45 thiab cov chromium- qib molybdenum rhiab heev rau qhov txias txias, yog li preheat thiab post-weld tshav kub lub sij hawm yuav tsum tau tswj.
Machining nyiaj pab yuav tsum them rau qhov tob decarburization thiab qhov ntev ntev tso cai los ntawm tus qauv.
Rau cov khoom siv machined thoob plaws, qhia kom kaw cov phab ntsa eccentricity txwv thiab cov qeb xeem tsim nyog.
Tej kev siv
Kev siv kawg suav nrog hydraulic lub tog raj kheej chim, piston rods, caj pas thiab cov kabmob qhov chaw, iav thiab coupling blanks, automotive thiab kev ua liaj ua teb machinery Cheebtsam, mining thiab siv cov cuab yeej siv, thiab cov qauv txheej txheem uas yuav tsum machined rau ib tug tiav lawm nto. Nyob rau hauv txhua rooj plaub qhov kev xaiv yog tsav los ntawm lub zog theem yuav tsum tau tom qab qhov kawg kev kho cua sov thiab los ntawm lub machinability ntawm qib.
FAQ
Q: Puas yog EN 10297 zoo ib yam li EN 10216?
No. EN 10297-1 npog seamless raj rau txhua yam thiab dav engineering lub hom phiaj, thaum EN 10216 series npog seamless raj rau lub hom phiaj siab. Cov chav kawm qib, cov qauv xeem thiab cov kev xav tau nruj sib txawv, yog li ob tus qauv tsis hloov pauv ntawm qhov ntsuas ntsuas siab.
Q: Cov qib twg yog siv dav tshaj plaws?
E235 thiab E355 yog thawj qhov kev xav tau ntawm engineering, vim tias lawv qhov kev tawm dag zog tsawg kawg nkaus ntawm 235 MPa thiab 355 MPa npog ntau yam ntawm cov khoom siv. C45 thiab chromium- qib molybdenum raug xaiv qhov twg siab dua hardness lossis qaug zog tiv thaiv tom qab kev kho cua sov.
Q: EN 10297-1 raj puas tuaj yeem welded?
Cov qib tsis yog - alloy yog yooj yim weldable thiab nquag fabricated rau hauv thav duab thiab cov qauv. Qhov siab dua -cov pa roj carbon thiab qis- cov qib alloy yuav tsum tau tswj hwm preheating, tsim nyog consumables thiab ib tug ncej-weld kho cua sov kom tsis txhob tawg nyob rau hauv lub tshav kub- cheeb tsam cuam tshuam.
Q: Puas yog tus qauv txhim kho lub cheeb sab nraud thiab phab ntsa thickness?
Tsis muaj ib lub rooj sib hais. Dimensions tau pom zoo ntawm kev txiav txim, feem ntau nrog rau kev siv cov metric qhov ntau thiab tsawg, thiab tus qauv tom qab ntawd tswj cov kev kam rau siab uas tus neeg tsim khoom yuav tsum tuav ntawm qhov pom zoo qhov ntev.
Q: Cov ntaub ntawv soj ntsuam dab tsi yog ib txwm muab?
Engineering tube yog ib txwm xa nrog daim ntawv pov thawj tshuaj xyuas hom 3.1 rau EN 10204, muab los ntawm cov chaw tsim khoom tus neeg saib xyuas tus neeg sawv cev ywj pheej thiab hais txog qib, tus lej xov tooj cua sov, kev xa khoom thiab cov txiaj ntsig ntawm cov kev xeem xav tau.
Q: Vim li cas ho xaiv seamless es welded raj rau engineering qhov chaw?
Ib lub raj seamless tsis muaj weld seam, yog li tsis muaj kev hloov hauv zos ntawm cov qauv lossis chemistry nyob ib ncig ntawm lub voj voog. Qhov ntawd muab cov machinability zoo ib yam thiab ntau dua kev ua haujlwm qaug zog hauv kev sib hloov lossis cov khoom thauj khoom hnyav heev.
