Awọn abawọn ati Awọn iwọn wiwọn ti awọn ayederu nla: microstructure ti ko ni deede ati awọn ohun-ini

Awọn ayederu nla, Nitori iwọn nla wọn, ọpọlọpọ awọn ilana, gigun gigun, aiṣe-aṣọkan ninu ilana, ati ọpọlọpọ awọn okunfa riru, nigbagbogbo fa aiṣe-aiṣedeede pataki ni microstructure, ki wọn ko le kọja idanwo ohun-ini ẹrọ, ayewo metallographic ati kii ṣe- erin abawọn iparun.

Nitori ipinya ti akopọ kemikali, ikojọpọ ifisi ati ọpọlọpọ awọn abawọn pore ninu ingot;
Nigbati alapapo, iwọn otutu yoo yipada laiyara, pinpin ko ni deede, aapọn inu jẹ nla, abawọn jẹ pupọ;
Iwọn otutu ti o ga ati fifun igba pipẹ, aapọn agbegbe ati ibajẹ agbegbe, ipo ṣiṣan ṣiṣu, iwọn ti irẹpọ, pinpin idibajẹ jẹ iyatọ pupọ;
Lakoko itutu agbaiye, ilana itankale jẹ o lọra, iyipada tissu jẹ eka ati aapọn afikun jẹ nla.
Gbogbo awọn nkan ti o wa loke le ja si inhomogeneity to ṣe pataki ti iṣẹ iṣan ati didara ti ko pe.
Igbese lati mu awọn uniformity tinla forgings:
1. Gba imọ-ẹrọ smelting to ti ni ilọsiwaju lati mu didara irin-irin ti ingot irin;
2. Gba iṣakoso ayederu, iṣakoso imọ-ẹrọ itutu agbaiye, mu ilana imọ-ẹrọ ṣiṣẹ, ati ilọsiwaju imọ-ẹrọ ati ipele eto-ọrọ ti iṣelọpọ iṣelọpọ nla.

https://www.shdhforging.com/news/defects-and-countermeasures-of-large-forgings-uneven-microstructure-and-properties


Akoko ifiweranṣẹ: Oṣu kejila-10-2020

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