Kev tsim khoom tsim ntawm cov kav hlau hlau txawv nyob ntawm lawv hom (xws li Seamless Steel Kave thiab applicate muab faib ua cov kauj ruam tseem ceeb hauv qab no:
I. Npaj Cov Khoom Siv Raw
Hlau Billet \/ Steel Chev
The main raw materials for steel pipes are steel billets (used for seamless steel pipes) or steel coils (used for welded steel pipes), which are usually made by steel mills through continuous casting or hot rolling processes.
• Seamless steel yeeb nkab: Hloov cov hlau billets (khoom) yog saws.
• Welded Steel Kav: Hlau Strips lossis Hlau Phaj Coils (Cov Ntaub Ntawv Ca) yog siv.
Ii. Cov txheej txheem tsim khoom ntawm Seamless Steel Kav
Seamless steel kav yog kev ua tiav los ntawm cov txheej txheem hlau billes thiab haum rau kev kub siab thiab kev kub siab (xws li roj thiab tshuaj siv tshuaj).
Tho (kub dov)
Lub billet yog rhuab mus rau ib ncig 1200 degree thiab tom qab ntawd nkaug los ntawm nruab nrab ntawm lub raj mis los ntawm lub tshuab tho kev sib tw (xws li tus ntoo khaub lig-dov therming tshuab).
2. Dov
Cov hlab ntxhib ntxiv txuas ntxiv thiab lawv cov phab ntsa tuab txo los ntawm ntau tus dhau xo rolling mills (xws li txuas ntxiv rolling mills thiab cov yeeb nkab jacking tshuab).
3. SIZING thiab txo
Lub taub sab sab nraud yog tuaj yeem hloov kho los ntawm lub tshuab sizing, lossis cov hlab yeeb tuaj yeem txo qis dua los ntawm lub tshuab txo qis.
4. Cua txias thiab ncaj
Tom qab dov, tus kav dej hlau tau txias txias rau chav sov, thiab tom qab ntawd tus tuav lub tshuab ncaj tua pov tseg.
5. Txiav thiab Kho Cua Sov
Txiav rau qhov yuav tsum tau ntev thiab yauv ua ib qho kev kho mob lossis ib txwm kho kom txhim kho cov khoom siv neeg.
6. Kev tshuaj xyuas
Nrog rau qhov ntev, Ultrasonic Qhov Ntsuas Kom Tau (Ult), EDDY qhov nrhiav tau, thiab lwm yam, kom ntseeg tau tias tsis muaj qhov tsis xws sab hauv.
III. Cov txheej txheem tsim khoom ntawm Welded Hlau Kav
Welded steel kav yog tsim los ntawm cov kab hlau strips rau hauv cov duab thiab tom qab ntawd vuam lawv. Lawv muaj tus nqi qis dua thiab tsim nyog rau cov kav dej ntau (xws li cov kav dej hauv dej thiab cov txheej txheem dej).
1. Kev Ua
Tom qab cov khoom siv ua ntej ua ntej, cov hlau txaij yog dov rau hauv lub raj ua kom zoo los ntawm kev sib sau siv lub tshuab (xws li kauv lossis muab kauv ua ke).
• Cov txheej txheem sib xws: Shole leeg vuam (ERW, LSAWW) lossis muab kauv vuam (ssaw).
2. VUAM
• High-fum-fuminations tiv thaiv (ERW): nws siv hluav taws xob tam sim no kom sov ntawm ntug thiab thov kev kub siab rau vuam.
• Submerged arc vuam (pom): nws yog siv rau tuab-walled steel kav hlau, thiab Weld Seam yog qhov ruaj.
3. Tshem tawm weld nti thiab sizing
Tshem tawm burrs los ntawm ob qho tib si sab hauv thiab sab nraud welds thiab qhia meej txoj yeeb nkab lub raj ntawm lub tshuab sizing.
4. Cua txias thiab ncaj
Ncaj tom qab dej txias los yog cua txias kom ntseeg tau txoj kev ncaj.
5. Txiav thiab tshuaj xyuas
Txiav mus rau hauv tus qauv ntev thiab yauv mus ncig hydrostatic, xoo hluav taws xob qhov kom pom thiab lwm yam tshuaj xyuas.
IV. Ua raws li
1. Nto Kho Mob
• Painting, Galvanizing (tiv thaiv xeb) lossis txheej (xws li 3Pe los tiv thaiv xeb-corrosion).
2. Kev kho cua sov
Anneal, normalize lossis quench thiab npau taws kom hloov kho lub hardness thiab tawv ntawm cov yeeb nkab steel.
3. Cov Khoom Ua tiav
• Ua tiav (xws li beveling), xws li roj cov kav dej zoo), thiab lwm yam.
V. Kev Soj Ntsuam Zoo thiab Ntim
Cov Khoom Taw Qhia Tseem Ceeb
Qhov ntsuas qhov tseeb, tshuaj lom neeg, cov khoom siv mechanical, cov tshuaj ntsuam Tensile), tsis muaj kev sim ua kom tsis txhob muaj zog (ilostatic kuaj, thiab lwm yam.
2. Ntim thiab Tsheb Thauj Mus Los
Kev tiv thaiv lub kaus mom tau ntxiv rau ob qho kawg ntawm cov kav hlau, uas yog tom qab ntawv pob thiab sau npe ua ntej tawm hauv lub hoobkas.
VI. Daim Ntawv Thov
Kev thauj mus los hlau hlau yog siv dav hauv cov tsheb thiab roj tsheb thauj mus los, tsev tsim, tsheb, nkoj, thiab lub zog. Lawv cov ntawv thov tshwj xeeb nyob ntawm lawv cov ntaub ntawv, cov txheej txheem, thiab cov khoom.
Cov lus piav qhia ntxiv
Seamless steel kav: siab zog, tab sis tus nqi siab; Nws yog haum rau high-voltage thiab high-precision thov scenarios.
Welded Steel Kav: Lawv muaj kev ua haujlwm siab thiab tus nqi qis, tab sis Weld Seams tuaj yeem ua cov ntsiab lus tsis muaj zog.
