Thib ob, lub hom phiaj ntawm kev lag luam
Ua ntej, cov xwm txheej tseeb ntawm cov yeeb nkab kev lag luam
NTU 2 Txoj Cai LO ntawm Steel Yeeb Nkab Raug Kev Lag Luam
3. Loj -} dia welded Yeeb Nkab Chav
2. Nruab nrab taub welded Yeeb Nkab Chav
2, Thib Ob, txoj kev txhim kho ntawm cov yeeb nkab txheem sib xyaw ua ke ultrasonic. Kev loj hlob ntawm me me- dia welded yeeb nkab chav
3. Kev txhim kho thiab kev txhim kho lub sijhawm ntawm cov yeeb nkab kev lag luam
(3) tsim ntawm cov chaw tsim khoom rau lwm yam ntawm cov kav hlau hlau
(2) Lub sijhawm nrov ntawm 60-70s ntawm lub xyoo pua 20th
Peb qhov txheej txheem tseem ceeb ntawm cov yeeb nkab kev lag luam kev lag luam tsim (1) lub sijhawm ua haujlwm hauv xyoo 1950
Kev Tsim Kho Keeb Kwm Ntawm Tuam Tshoj ntawm cov yeeb nkab steel yeeb nkab
Txij li thaum hloov kho thiab qhib-Up, Tuam Tshoj cov yeeb nkab kev lag luam thiab kev txhawb nqa zoo nkauj, kev ua tiav zoo nkauj, kev siv zog txhim kho zog, txhawb nqa kev txhim