Tsela ea ho khetha karo-karolelano ea forging?

Ha karo-karolelano ea ho forging e ntse e eketseha, li-pores tsa ka hare lia hatelloa 'me li-dendrite tsa as-cast lia robeha, e leng se etsang hore ho be le ntlafatso e kholo ea thepa ea mochine oa longitudinal le oa transverse oa mochine. Empa ha elongation forging karolo karo-karolelano e kholo ho feta 3-4, e le forging karolo karo-karolelano e ntse e eketseha, e totobetseng faeba meaho e thehoa, e leng ho etsa hore ho fokotseha ho matla ka polasetiki index ea thepa transverse mechine, e isang ho anisotropy ea forging. Haeba karo-karolelano ea karolo ea forging e nyane haholo, forging e ke ke ea fihlela litlhoko tsa ts'ebetso. Haeba e le kholo haholo, e eketsa mosebetsi oa forging hape e baka anisotropy. Ka hona, ho khetha tekanyo e loketseng ea ho forging ke taba ea bohlokoa, 'me taba ea ho se lekane ha deformation nakong ea forging le eona e lokela ho nkoa.

Karolelano ea forging hangata e lekantsoe ka tekanyo ea deformation nakong ea bolelele. E bua ka karo-karolelano ea bolelele le bophara ba thepa e lokelang ho etsoa, ​​​​kapa karo-karolelano ea sebaka sa sefapano sa thepa e tala (kapa billet e entsoeng esale pele) pele e qhekella sebakeng sa sefapano sa sehlahisoa se feliloeng ka mor'a ho forging. Boholo ba karo-karolelano ea ho forging bo ama thepa ea mochini ea litšepe le boleng ba ho forging. Ho eketsa karo-karolelano ea ho qhekella ho molemo bakeng sa ho ntlafatsa microstructure le thepa ea tšepe, empa litekanyo tse feteletseng tsa ho qhekella le tsona ha li na molemo.

Molao-motheo oa ho khetha karo-karolelano ea forging ke ho khetha e nyane ka hohle kamoo ho ka khonehang ha o ntse o netefatsa litlhoko tse fapaneng tsa forgings. Karolelano ea forging hangata e khethoa ho latela maemo a latelang:

1. Ha tšepe ea boleng bo phahameng ba k'habone le tšepe ea sebopeho sa motsoako li entsoe ka bolokolohi holim'a hamore: bakeng sa mofuta oa shaft forgings, li entsoe ka kotloloho ho tsoa ho li-ingots tsa tšepe, 'me karolelano ea ho qhekella e baloang ho latela karolo e kholo e lokela ho ba ≥ 3; Karolelano ea forging e baloang ho latela li-flange kapa likarolo tse ling tse hlahelletseng e lokela ho ba ≥ 1.75; Ha u sebelisa li-billet tsa tšepe kapa lisebelisoa tse rolotsoeng, karolelano ea ho forging e baloang ho latela karolo e kholo ke ≥ 1.5; Karolelano ea forging e baloang ho latela li-flange kapa likarolo tse ling tse hlahelletseng e lokela ho ba ≥ 1.3. Bakeng sa li-ring forgings, karo-karolelano ea ho forging e lokela ho ba ka kakaretso ≥ 3. Bakeng sa li-disk forgings, li entsoe ka ho toba ho tloha li-ingots tsa tšepe, tse nang le tekanyo e ferekanyang ea ho folisa ea ≥ 3; Maemong a mang, karo-karolelano e ferekanyang e lokela ho ba>> 3, empa ts'ebetso ea ho qetela e lokela ho ba>.

2. Lesela le phahameng la alloy steel billet ha le hloke feela ho felisa mefokolo ea eona ea sebopeho, empa hape le hloka ho ba le kabo e tšoanang ea li-carbides, kahoo ho tlameha ho amoheloa tekanyo e kholoanyane ea forging. Karo-karolelano ea tšepe e sa hloekang e ka khethoa e le 4-6, ha karo-karolelano ea tšepe e phahameng e lokela ho ba 5-12.