X42 Welded Round Steel Yeeb Nkab

Vuam kub muaj qhov cuam tshuam loj rau kev ua haujlwm ntawm X42 steel kav. Nov yog qee cov ntsiab lus tseem ceeb hais txog kev cuam tshuam ntawm vuam kub ntawm cov khoom ntawm X42 steel kav:

Microstructure Hloov: Thermal cycles thiab txias tus nqi ntawm vuam ua lub luag haujlwm tseem ceeb hauv kev hloov microstructure. Kev kub siab tuaj yeem ua rau kev loj hlob ntawm austenite grain, uas yog qhov tshwj xeeb tshaj yog nyob rau hauv qhov kub-cuam tshuam cheeb tsam (HAZ) uas nyob ib sab ntawm lub weld hlau interface. Qhov no tuaj yeem ua rau muaj kev tsim ntawm qhov ntxhib grain kub-tshuaj tiv thaiv cheeb tsam (CGHAZ), uas yog lub npe hu rau nws qis toughness.

Hardness thiab Crack Susceptibility: Cov pa roj carbon sib npaug (CE) yog ib qho qhia siv los kwv yees hardenability lossis crack susceptibility hauv steel welds. Cov txheej txheem vuam uas koom nrog cov cua kub siab tuaj yeem ua rau muaj zog thiab muaj peev xwm ua rau muaj kev cuam tshuam rau qhov txias txias hauv HAZ vim yog tsim ntawm martensite.

Impact Toughness: Kev kub siab input welding tuaj yeem txo qhov cuam tshuam ntawm cov vuam thiab HAZ, tshwj xeeb tshaj yog cov hlau muaj zog dua li X42. Qhov no yog vim kev loj hlob ntawm cov nplej austenite thiab tsim cov crystallographic textures tsis zoo.

Cov kev nyuaj siab: Vuam nrog cov cua kub nkag tuaj yeem ua rau muaj kev ntxhov siab ntau dua hauv cov qauv welded. Cov kev ntxhov siab no tuaj yeem tshwm sim los ntawm kev ua kom txias sai, theem kev hloov pauv hauv cov hlau vuam, thiab sib txawv thermal expansion coefficients ntawm cov khoom siv hauv paus thiab vuam.

Hydrogen embrittlement: Cov txheej txheem xws li pickling thiab vuam tuaj yeem qhia hydrogen rau hauv cov hlau. Yog tias kev tiv thaiv cathodic tsis raug siv thaum lub sijhawm ua haujlwm hauv cov raj xa dej, nws tuaj yeem ua rau muaj kev tiv thaiv ntau dhau, ua rau muaj kev hloov pauv hydrogen ntau dhau ntawm cathode thiab hydrogen embrittlement, yog li txo qis kev ua haujlwm ntawm cov khoom siv hauv cov kav dej thiab ua rau tawg tawg.

Q: Koj puas yog tuam txhab lag luam lossis chaw tsim khoom?
A: Peb yog Hoobkas.

Q: Koj lub sijhawm xa khoom ntev npaum li cas?
A: Feem ntau nws yog 5 ~ 10 hnub yog tias cov khoom muaj nyob hauv Tshuag. Los yog nws yog 45 hnub yog tias cov khoom tsis nyob hauv Tshuag, nws yog raws li qhov ntau.

Q: Koj cov nqe lus them nqi yog dab tsi?
A: Them nyiaj<=1000USD, 100% in advance. Payment>=1000USD, 50% T / T ua ntej, tshuav nyiaj li cas ua ntej xa khoom. irrevocable LC thaum pom.

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