GB/T 1979-2001: Translated English of Chinese Standard. (GBT 1979-2001, GB/T1979-2001, GBT1979-2001): Standard diagrams for macrostructure and defect of structural steels
https://www.chinesestandard.net, 13 mrt. 2018 - 65 pagina's
This Standard specifies and describes the classification, characteristics, causing reasons and assessment principles, classification and the scope of application of the standard diagram, assessment methods and test report of acid-pickling macrostructure-defect of structural steel.
Wat mensen zeggen - Een review schrijven
We hebben geen reviews gevonden op de gebruikelijke plaatsen.
Classification and applicable scope of the standard diagram
acid-pickling test-piece assessed according Assessment principles Axial inter-crystalline cracks casting billet Causing reasons Central porosity Ingot-shape Central segregation component segregation corrosion crystallization process Cutting and display dark spots dendritic crystal determined according diagram V Continuous-casting diameter or side display method Dissimilar metal inclusions Edged spotted segregation Forging and rolling frame-band GB/T general-porosity grade-4 diagram greater than 250mm ingot Internal blowholes length is 40mm length is greater length is less less than 40mm liquid steel matrix tissue modify and supplement Non-metallic inclusions Partially modify peeling porosity Central porosity porosity Ingot-shape segregation previous standard diagram provisions reasons and assessment representative diagram Residual shrinkage cavity rolling billet segregation Characteristic segregation Edged spotted side length slag inclusions spots and gaps spotted segregation Edged square steel Standard diagram III steel products billet steel products Forging structural steel Subsurface blowholes supply-demand parties Test report test-sample tissue porosity total 20 diagrams visual visibility White spot white-band