Uma kuziwa ekukhetheni ibha yensimbi efanele ye-alloy yemishini, i-aerospace, noma izinhlelo zokusebenza zezimboni, amagama amathathu avame ukuza phambili -4140, 4130, futhi4340. Lezi zinsimbi ze-chromium-molybdenum ezine-alloy ephansi zaziwa ngamandla, ukuqina, kanye nokusebenziseka kalula. Kodwa wazi kanjani ukuthi iyiphi ekufanelekela iphrojekthi yakho?
Kulo mhlahlandlela ophelele, siqhathanisa4140 vs 4130 vs 4340 imigoqo yensimbikuwo wonke amamethrikhi angukhiye afana nokwakheka kwamakhemikhali, izici zokukhanda, ubulukhuni, ukushisela, ukwelashwa kokushisa, nokufaneleka kohlelo lokusebenza — onjiniyela abasizayo, abakhi, nabathengi benze izinqumo zezinto ezibonakalayo ezinolwazi.
1. Isingeniso ku-4140, 4130, kanye ne-4340 Steel Bars
1.1 Yiziphi izinsimbi ezinengxubevange ephansi?
Izinsimbi ezinengxubevange ephansi ziyizinsimbi zekhabhoni ezihlanganisa amanani amancane ezinto ezihlanganisiwe njenge-chromium (Cr), i-molybdenum (Mo), ne-nickel (Ni) ukuze kuthuthukiswe izakhiwo ezithile.
1.2 Uhlolojikelele lweBanga ngalinye
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4140 Insimbi: Insimbi enemisebenzi eminingi enikeza amandla amangalisayo nobulukhuni, esetshenziswa kabanzi ekwenzeni amathuluzi, izingxenye zezimoto, nobunjiniyela obujwayelekile.
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4130 Insimbi: Yaziwa ngokuqina kwayo okuphezulu nokushisela, evame ukusetshenziswa kwezokundiza kanye nemidlalo yezimoto.
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4340 Insimbi: Ingxubevange ye-nickel-chromium-molybdenum enamandla aphakeme kakhulu kanye nokumelana nokukhathala, ekhethelwa indawo ye-aerospace nezinhlelo zokusebenza ezisindayo.
2. Ukuqhathaniswa Kokwakheka Kwamakhemikhali
| Isici | 4130 (%) | 4140 (%) | 4340 (%) |
|---|---|---|---|
| Ikhabhoni (C) | 0.28 – 0.33 | 0.38 – 0.43 | 0.38 – 0.43 |
| I-Manganese (Mn) | 0.40 - 0.60 | 0.75 - 1.00 | 0.60 - 0.80 |
| I-Chromium (Cr) | 0.80 - 1.10 | 0.80 - 1.10 | 0.70 - 0.90 |
| I-Molybdenum (Mo) | 0.15 - 0.25 | 0.15 - 0.25 | 0.20 - 0.30 |
| I-Nickel (Ni) | - | - | 1.65 - 2.00 |
| I-silicon (Si) | 0.15 - 0.35 | 0.15 - 0.30 | 0.15 - 0.30 |
Amanothi Abalulekile:
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4340wengezei-nickel, okwenza kube nokuqina okuphezulu nokumelana nokukhathala.
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4130inokuqukethwe kwekhabhoni ephansi, iyathuthukaukushisela.
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4140inekhabhoni ephezulu kanye ne-manganese, ikhuthazaubulukhuni namandla.
3. Ukuqhathaniswa Kwezakhiwo Zemishini
| Impahla | 4130 Insimbi | 4140 Insimbi | 4340 Insimbi |
|---|---|---|---|
| Amandla Okuqina (MPa) | 670 - 850 | 850 - 1000 | 930 - 1080 |
| I-Yield Strength (MPa) | 460 - 560 | 655 – 785 | 745 – 860 |
| Ubude (%) | 20-25 | 20-25 | 16-20 |
| Ukuqina (HRC) | 18-25 | 28-32 | 28-45 |
| Impact Toughness (J) | Phezulu | Kuphakathi | Phezulu kakhulu |
4. Ukwelashwa Kokushisa Nokuqina
4130
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UkujwayelaUkushisa: 870–900°C
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Ukuqina: Ukucisha uwoyela kusuka ku-870°C
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UkuthuthumelaUkushisa: 480–650°C
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Kuhle kakhulu: Izicelo ezidingekayoukushiselafuthiubulukhuni
4140
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Ukuqina: Ukucisha uwoyela kusuka ku-840–875°C
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Ukuthuthumela: 540–680°C
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Ukuqina: Kuhle kakhulu - ukuqina kwecala elijulile kuyafezeka
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Kuhle kakhulu: Amashafu aqinile, amagiya, ama-crankshafts
4340
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Ukuqina: Amafutha noma i-polymer quench kusuka ku-830-870°C
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UkuthuthumelaUkushisa: 400-600°C
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Kuyaphawuleka: Igcina amandla ngisho nangemva kokuqina okujulile
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Kuhle kakhulu: Izimpahla zokuhlalisa indiza, izingxenye zokushayela ezisindayo
5. Weldability kanye Machinability
| Impahla | 4130 | 4140 | 4340 |
|---|---|---|---|
| Ukushisela | Kuhle kakhulu | I-Fair to Good | Kuhle |
| Ukusebenziseka kalula | Kuhle | Kuhle | Kuphakathi |
| Ukushisa kuqala | Inconyelwe izingxenye eziwugqinsi (>12mm) | ||
| Ukwelashwa Kokushisa Kwangemva Kwe-Weld | Kunconyelwe i-4140 kanye ne-4340 ukunciphisa ingcindezi nokuqhekeka |
4130igqama ngokushisela kalula usebenzisa i-TIG/MIG ngaphandle kokuqhekeka ngokweqile, ilungele izakhiwo zamashubhu ezifana namakheji okugoqa noma amafreyimu endiza.
6. Izicelo zemboni
6.1 4130 Izicelo Zensimbi
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I-Aerospace tubing
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Amafreyimu omjaho namakheji okugoqa
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Izithuthuthu ozimele
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Abemukeli bezibhamu
6.2 4140 Izicelo Zensimbi
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Abaphathi bamathuluzi
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Ama-Crankshafts
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Amagiya
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Ama-ekseli namashaft
6.3 4340 Izicelo Zensimbi
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Izimpahla zokuhlalisa izindiza
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Amabhawodi anamandla aphezulu nezinsimbi
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Izingxenye zemishini enzima
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Amashafu emboni kawoyela negesi
7. Izindleko Ukucatshangelwa
| Ibanga | Izindleko Ezihlobene | Ukutholakala |
|---|---|---|
| 4130 | Phansi | Phezulu |
| 4140 | Maphakathi | Phezulu |
| 4340 | Phezulu | Kuphakathi |
Ngenxa yayookuqukethwe kwe-nickel, I-4340 iyona ebiza kakhulu. Kodwa-ke, ukusebenza kwayo ezicelweni ezifunayo kuvame ukuthethelela izindleko.
8. Amazinga Amazwe Omhlaba kanye Nokuqokwa
| Ibanga Lensimbi | I-ASTM | SAE | EN/DIN | I-JIS |
|---|---|---|---|---|
| 4130 | I-A29/A519 | 4130 | 25CrMo4 | I-SCM430 |
| 4140 | I-A29/A322 | 4140 | 42CrMo4 | I-SCM440 |
| 4340 | I-A29/A322 | 4340 | 34CrNiMo6 | I-SNCM439 |
Qinisekisa ukuthi umphakeli wakho wensimbi uhlinzeka ngezitifiketi zokuhlola zokugaya ezihambisana nezindinganiso ezifanele ezifana naleziI-ASTM A29, I-EN 10250, nomaI-JIS G4053.
9. Ungakhetha Kanjani Ibha Yensimbi Efanele
| Imfuneko | Ibanga Elinconyiwe |
|---|---|
| I-weldability engcono kakhulu | 4130 |
| Ibhalansi engcono kakhulu yamandla nezindleko | 4140 |
| Ukuqina okuphezulu namandla okukhathala | 4340 |
| Ukumelana nokugqoka okuphezulu | 4340 noma 4140 lukhuni |
| I-Aerospace noma imoto | 4340 |
| Ubunjiniyela obujwayelekile | 4140 |
10. Isiphetho
Emqhudelwaneni weIbha Yensimbi 4140 vs 4130 vs 4340, akekho owinile olingana noyedwa — ukukhetha okulungile kuncike kuweukusebenza, amandla, izindleko, kanye nezidingo zokushisela.
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Khetha4130uma udinga ukushisela okuhle kakhulu namandla amaphakathi.
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Hamba ne4140okukhethwa kukho okunamandla, okungabizi kakhulu okufanelekile ku-shafts namagiya.
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Khetha4340lapho ukuqina okwedlulele, amandla okukhathala, nokumelana nokushaqeka kubalulekile.
Isikhathi sokuthumela: Jul-24-2025