1. Cov hlab ntsha tsis zoo thiab tsis zoo yog qhov yooj yim rau folding. Folds yog ntau txoj kab sib dhos tsim rau ntawm qhov chaw ntawm lub raj raj, thiab qhov tsis xws luag no feem ntau khiav los ntawm txoj kab ntev ntawm tag nrho cov khoom. Yog vim li cas rau qhov folding yog tias cov khoom cuav thiab cov khoom lag luam tsis zoo nrhiav kev ua haujlwm siab, thiab qhov txo qis yog loj heev, ua rau pob ntseg, thiab folding tshwm sim thaum lub sij hawm tom ntej dov. Cov khoom ntim yuav tawg tom qab khoov, thiab lub zog ntawm cov hlau yuav raug txo kom tsawg.
2. Cov tsos ntawm cov yeeb nkab tsis zoo thiab tsis zoo feem ntau muaj pockmarked nto. Lub pitted nto yog qhov tsis sib xws ntawm qhov tsis sib xws ntawm cov hlau vim yog qhov hnyav hnyav ntawm qhov dov zawj. Vim tias cov tuam ntxhab ntawm cov kav dej tsis zoo thiab cov kav dej tsis zoo xav nrhiav cov txiaj ntsig, nws feem ntau tshwm sim tias qhov zawj dov tshaj tus qauv.
3. Qhov saum npoo ntawm cov yeeb nkab tsis zoo thiab tsis zoo yog qhov ua rau caws pliav. Muaj ob qho laj thawj: (1). Cov khoom ntawm cov khoom cuav thiab qhov tsis zoo ntawm lub raj yog tsis sib xws thiab muaj ntau yam impurities. (2). Fake thiab shoddy manufacturers muaj cov khoom qhia tsis zoo thiab yooj yim rau lo rau hlau. Cov impurities no
4. Qhov saum npoo ntawm cov khoom cuav thiab cov khoom tsis zoo yog qhov ua rau tawg, vim nws qhov khoob yog adobe, thiab adobe muaj ntau qhov pores, thiab adobe raug thermal stress thaum lub sij hawm txias, ua rau tawg. Tom qab dov, muaj cov kab nrib pleb.
5. Cov hlab ntsha tsis zoo thiab tsis zoo yog ib qho yooj yim rau kev khawb, vim tias cov tuam txhab tsim cov hlau tsis zoo thiab cov khoom tsis zoo muaj cov khoom siv yooj yim, uas yog ib qho yooj yim los tsim cov burrs thiab khawb qhov saum npoo ntawm cov hlau. Sib sib zog nqus khawb txo lub zog ntawm cov hlau.
6. Lub raj tsis zoo thiab tsis zoo ntawm lub raj tsis muaj hlau nplaum thiab yog lub teeb liab lossis muaj ob qho laj thawj. Nws qhov dawb paug yog adobe. Lub dov kub ntawm cov khoom cuav thiab cov khoom tsis zoo tsis yog tus qauv, thiab lawv cov hlau kub ntsuas qhov muag pom, yog li cov dov tsis tuaj yeem ua raws li thaj chaw austenite, thiab kev ua haujlwm ntawm cov hlau yuav ua tsis tau raws li tus qauv.
7. Lub transverse ribs ntawm cov fake thiab inferior lub raj yog nyias thiab qis, thiab feem ntau muaj qhov tshwm sim ntawm kev tsis txaus siab. Yog vim li cas yog tias cov chaw tsim khoom muaj lub siab ntev tsis zoo, thiab lub siab ntawm thawj ob peb kab ntawm cov khoom tiav yog
8. Ntu ntu ntawm cov yeeb nkab tsis zoo thiab tsis zoo yog oval. Yog vim li cas thiaj li yuav txuag tau cov ntaub ntawv, qhov txo qis ntawm thawj ob qhov kev hla ntawm cov yob tiav yog loj heev. txheem.
9. Cov muaj pes tsawg leeg ntawm cov hlau zoo sib xws, lub tonnage ntawm lub tshuab txias shearing yog siab, thiab lub ntsej muag kawg ntawm lub taub hau txiav yog du thiab huv si. Txawm li cas los xij, vim yog cov khoom siv tsis zoo ntawm cov khoom cuav thiab cov khoom tsis zoo, qhov kawg ntawm lub taub hau txiav feem ntau muaj qhov tshwm sim ntawm cov nqaij poob, uas yog, tsis sib xws thiab tsis muaj xim hlau luster. Thiab vim tias cov chaw tsim khoom lag luam tau txiav lub taub hau tsawg dua, pob ntseg loj yuav tshwm sim ntawm lub taub hau thiab tus Tsov tus tw.
