Ua haujlwm hardening ntawm txias-rolled coils yog dab tsi?
A: Thaum lub sij hawm txias dov, cov nplej ntawm cov sawb yog flattened thiab elongated, cov siv lead ua lattice yuav distorted thiab cov nplej tawg, ua rau ib tug txo nyob rau hauv cov hlau plasticity thiab nce nyob rau hauv nws lub zog thiab hardness. Qhov tshwm sim no ua rau cov hlau tsis kam mus rau deformation, ua rau cov khaub thuas dov nyuaj dua, thiab feem ntau yuav tsum tau recrystallization annealing kom tshem tawm nws.
Dab tsi yog qhov ua rau thiab kev phom sij ntawm hauv qab -pickling hauv txias-rolled coils?
A: Ua rau muaj xws li qhov tsis sib xws oxide nplai thickness, loj sawb waviness thiab camber ua rau plam pickling hauv qee qhov chaw, thiab tsis tiav oxide nplai tawg ua ntej pickling. Cov phom sij muaj xws li qhov tsaus ntuj lossis mottled nto tom qab dov, thiab hauv qhov xwm txheej hnyav, cov nplai oxide raug nias rau hauv, tsim cov pob dub, thiab tseem tuaj yeem ua rau waviness lossis warping hauv cov khoom, ua rau cov khoom seem.
Dab tsi yog qhov cuam tshuam ntawm ntau tshaj -pickling ntawm txias-rolled coils? Yuav tiv thaiv li cas?
A: Cov nyhuv yog tias cov hlau strip nto ua ntxhib thiab pitted, cuam tshuam rau saum npoo ntawm cov khoom tiav, thiab nyob rau hauv cov xwm txheej hnyav, nws yuav ua rau lub strip tawg. Kev tiv thaiv yuav tsum tau tswj qhov kub, concentration, thiab pickling ceev ntawm cov kua qaub raws li kev specifications kom tsis txhob ntev lub sij hawm nyob rau hauv lub steel sawb nyob rau hauv lub acid da dej.
Vim li cas sawb breakage tshwm sim thaum lub caij txias dov vim muaj kev ceev heev?
Teb: Qhov no feem ntau tshwm sim nyob rau hauv plaub dov pass. Thaum pib lub tshuab, lub coil txoj kab uas hla yog me me, thiab yog hais tias qhov ceev ceev ceev heev, tshaj qhov siab tshaj plaws ceev ntawm lub coiling tshuab, strip breakage yuav tshwm sim. Qhov ceev tuaj yeem nce ntxiv tsuas yog tom qab lub coil txoj kab uas hla mus txog ib qho nqi kom tsis txhob muaj kev sib tsoo.
Cov xeb tuaj yeem ua li cas rau cov kab txias - dov?
Teb: Nws yog feem ntau tshwm sim los ntawm ib qho me me ntawm cov kua qaub nyob rau ntawm qhov chaw ntawm lub strip tom qab pickling, los yog los ntawm kev ziab tsis tiav tom qab ntxuav, ua rau cov re- pom ntawm xeb txheej ntawm cov kab nrib pleb tom qab kev sib cuag nrog huab cua thiab noo noo.