Cov thickness tsis sib xws (piv txwv li, cov phab ntsa tsis sib haum) thaum lub sij hawm tsim cov kav dej yog ib qho teeb meem zoo. Nws cov laj thawj yog qhov nyuaj thiab koom nrog ntau yam xws li raw khoom, khoom siv, txheej txheem, thiab kev tswj hwm. Cov hauv qab no yog ib qho kev soj ntsuam ntxaws ntawm cov laj thawj:
Qhov laj thawj tseem ceeb: Inhomogeneous deformation
Lub ntsiab lus ntawm tag nrho cov teeb meem tsis sib xws nyob rau hauv qhov tseeb tias thaum lub sij hawm tsim (dov, ncab, khoov) los yog vuam txheej txheem, cov kev ntxhov siab, strain los yog cua sov tej yam kev mob los ntawm txawv qhov chaw ntawm cov yeeb nkab khoom yog inconsistent, ua rau cov hlau tsis sib xws los yog contraction.
Kev txheeb xyuas ntxaws txog qhov ua rau kev faib tawm
1. Cov khoom siv raw
- Qhov tsis zoo ntawm lub raj billet / strip steel:Round tube billets siv rau tho los yog cov sawb hlau siv rau welded kav inherently muaj tshuaj muaj pes tsawg leeg sib cais, sab hauv inclusions, los yog uneven thawj thickness (rau cov sawb hlau). Cov teeb meem no yuav raug nthuav dav thaum lub sij hawm tom ntej deformation txheej txheem.
- Cov cua kub tsis sib xws (tsuas yog rau cov raj seamless):Ua ntej kub dov thiab tho, lub raj billet yog rhuab tsis sib luag nyob rau hauv lub qhov cub cua sov, uas ua rau cov kub sib txawv ntawm lub taub hau thiab tus Tsov tus tw, sab hauv thiab sab nraud, los yog nyob rau hauv lub circumference ntawm lub raj. Cov hlau nyob rau hauv cov cheeb tsam kub yog softer thiab yooj yim rau deformation, ua rau cov phab ntsa thickness ntawm qhov chaw yuav thinner.
2. Cov khoom siv thiab cov cuab yeej cuab tam
• Tsis txaus precision ntawm cov khoom siv dov:
Seamless yeeb nkab perforation / dov raj tshuab:Yog hais tias lub taub hau sab saum toj ntawm lub tshuab perforating yog hnav tawm, misaligned, los yog lub qhov tuag ntawm lub dov tube tshuab yog hnav tawm los yog cov kev hloov ntawm cov menyuam sib txawv yog tsis tsim nyog, nws yuav ncaj qha ua rau eccentricity nyob rau hauv lub phab ntsa thickness.
Tube txoj kev tshuab:Yog tias qhov kev hloov kho ntawm cov txheej txheem ntawm txhua qhov dhau los tsis zoo ib yam, cov hlau sawb yuav raug quab yuam tsis sib xws thaum lub sijhawm ua haujlwm ntawm kev khoov rau hauv lub voj voog, ua rau "pear- zoo li" lossis "wavy npoo", uas yuav ua rau cov phab ntsa tsis sib xws ntawm cov welded yeeb nkab lub cev.
• Cov khoom siv vibration thiab nruj:Yog tias cov khoom siv hauv paus tsis ruaj khov, lub ntsiab ncej muaj kev tshem tawm ntau dhau lossis tsis txaus, nws yuav ua rau muaj kev vibration thaum lub sijhawm ua haujlwm siab -, ua rau cov txheej txheem tsim tsis ruaj khov.
3. Cov txheej txheem thiab kev tswj xyuas
• Cov txheej txheem tsis ruaj khov:
◦ Seamless yeeb nkab: Cov kev txwv xws li lub hauv ntej txuas ntawm lub taub hau tuag, dov ceev, thiab lub kaum sab xis pub mis tsis tau teeb tsa lossis tswj kom raug.
Cov yeeb nkab vuam: Cov kev hloov pauv hauv kev sib sau ceev, vuam cua sov (tam sim no, qhov hluav taws xob), thiab kev hloov siab ntawm cov extrusion rollers tuaj yeem ua rau cov hlau tsis sib xws hauv thaj chaw weld seam thiab cov cua sov- cuam tshuam cheeb tsam.
• Tsis tsim pwm lossis tuag tsim:Lub sizing band ntawm cov pwm, lub lubrication tej yam kev mob tsis txaus siab, los yog tus tuag tsim tsis ua hauj lwm kom lub uniform flow ntawm cov hlau.
• Kev tshawb nrhiav hauv online thiab kev tawm tswv yim lag:Kev ntsuas qhov ntsuas thiab tswj hauv online (xws li ultrasonic lossis X-ray thickness gauges) muaj qhov tsis txaus, qhov chaw teeb tsa tsis raug, lossis lub tshuab tswj tsis siv neeg (AGC) muaj cov lus teb qeeb, ua rau nws tsis tuaj yeem kho qhov sib txawv ntawm lub sijhawm.
4. Kev khiav hauj lwm thiab kev hloov kho
• Kev hloov kho tsis zoo tom qab hloov cov kev qhia ntau lawm: Tom qab hloov cov khoom specifications, cov kev hloov kho rau cov workpieces xws li yob, cov lus qhia, thiab lub taub hau tsis meej. Ib qho ntev ntawm "kev hloov kav dej" yuav tsum tau mus txog lub xeev ruaj khov, thiab cov phab ntsa thickness ntawm cov khoom no tsis sib xws.
• Kev tswj xyuas cov txheej txheem tsis zoo: Cov neeg ua haujlwm tsis tau ua raws li cov txheej txheem rau kev tshuaj xyuas cov cuab yeej, ntsuas kub, thiab ntsuas qhov ntsuas.
Kev sib piv ntawm ib txwm ua rau cov txheej txheem tseem ceeb:
| Hom txheej txheem | Tej yam ua rau tsis sib xws |
| Seamless steel kav (kub dov / txias kos) |
1. Cov cua kub tsis sib xws ntawm cov yeeb nkab billet (core) |
| 2. Hnav lossis misalignment ntawm lub taub hau ntawm lub tshuab tho (ua rau "phab ntsa thickness eccentricity"). | |
| 3. Hnav lossis misalignment ntawm cov yob hauv lub tshuab dov. | |
| 4. Hnav lossis lubrication tsis zoo ntawm qhov txias -kos duab mandrel (core taub hau). Welded steel kav (ncaj seam / helical seam) |
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| Welded steel kav (ncaj seam / kauv welded) |
1. Cov khoom siv ntawm lub sawb steel nws tus kheej muaj "scythe khoov" los yog tsis sib xws thickness (core). |
| 2. Kev hloov kho ntawm cov ntawv yob yog qhov tsis tsim nyog, ua rau "pear- zoo li" lossis "lub taub qab-ntug" ua cov seams. | |
| 3. Lub tswv yim ntawm vuam cua sov yog qhov tsis sib xws, ua rau tsis sib haum xeeb hauv qhov chaw vuam. | |
| 4. Kev hloov kho ntawm qhov sizing rolls yog qhov tsis tsim nyog. |
Summary and Solution Direction
Qhov tsis sib xws ntawm cov yeeb nkab ncig yog qhov teeb meem hauv lub cev. Txhawm rau daws nws, xav tau ib txoj hauv kev zoo, suav nrog kev ruaj khov ntawm cov khoom siv raw, ua kom cov khoom siv thiab kev saib xyuas kom raug, ua kom zoo thiab tswj cov txheej txheem tsis raug, nrog rau ntxiv dag zog hauv online tsis siv neeg tshawb nrhiav thiab tawm tswv yim. Feem ntau, los ntawm kev siv siab -precision nruam casting billets, txhim kho qhov tsis siv neeg tswj qhov system (AGC), siv cov qib siab hauv online thickness gauges thiab kho tam sim ntawd thiab hloov cov cuab yeej pwm, qhov sib xws ntawm cov yeeb nkab phab ntsa tuab tuaj yeem txhim kho tau zoo.
