Ibha yentsimbi ye-AISI 4140 1.7225 42CrMo4 SCM440 B7
Inkcazo emfutshane:
Intsimbi ye-alloy ye-AISI SAE 4140 yinkcazo yentsimbi ye-alloy ye-chromium molybdenum esetyenziswa kakhulu kwintsimbi exineneyo ene-tensile ephezulu kwiinxalenye, ezifana nee-axles, ii-shafts, ii-bolts, ii-gears kunye nezinye izinto.
IiBha zeNtsimbi yeKhabhoni:
I-AISI 4140, i-1.7225 (42CrMo4), i-SCM440, kunye ne-B7 Steel Bar ziimpawu ezahlukeneyo zohlobo olufanayo lwentsimbi ye-alloy. Zaziwa ngamandla aphezulu kunye nokuqina, ezisetyenziswa rhoqo kwizicelo ezifana neegiya kunye neebholiti. I-AISI 4140 yimpawu yaseMelika, i-1.7225 yimigangatho ye-European EN, i-SCM440 yimpawu yaseJapan ye-JIS, kwaye i-B7 ibhekisa kwiinkcukacha ze-ASTM A193 ezihlangabezana nomgangatho. Ezi mpawu zimele intsimbi ye-alloy ye-chromium-molybdenum eneempawu ezifanayo, kwaye ukhetho lunokuxhomekeka kwimigangatho yengingqi okanye yeshishini.
Iinkcukacha ze-4140 1.7225 42CrMo4 SCM440 B7:
| Ibanga | 4140 1.7225 42CrMo4 SCM440 B7 |
| Umgangatho | I-ASTM A29, i-ASTM A193 |
| Umphezulu | Mnyama, Omatshini Orhabaxa, Ojikiweyo |
| Uluhlu lobubanzi | 1.0 ～ 300.0mm |
| Ubude | Iimitha ezi-1 ukuya kwezi-6 |
| Ukucubungula | Itsalwe Ngobandayo Neyikhazimlayo Itsalwe Ngobandayo, Ayinamhlaba kwaye Ikhazimlayo |
| Izinto eziluhlaza | POSCO, Baosteel, TISCO, Saky Steel, Outokumpu |
Iimpawu kunye neenzuzo:
•Amandla Aphezulu: Ezi ntsimbi ziqinile kakhulu, nto leyo eyenza ukuba zilungele ukusetyenziswa apho amandla nokuqina kubalulekile.
•Ukuqina: Zinika ukuqina okuhle kunye nokumelana neempembelelo, nto leyo ezenza zikwazi ukumelana nemithwalo enzima kunye noxinzelelo oluguquguqukayo.
•Ukuguquguquka: I-AISI 4140, 1.7225, 42CrMo4, SCM440, kunye ne-B7 zii-alloys ezinokuguquguquka ezifanelekileyo kwiintlobo ngeentlobo zezicelo, kubandakanya iigiya, iibholiti, iishafti, kunye nezinto zokwakha.
•Ukumelana Nokuguguleka: Izinto ezidibanisayo, ezifana ne-chromium kunye ne-molybdenum, zinegalelo ekuphuculeni ukumelana nokuguguleka, nto leyo eyenza ezi ntsimbi zilungele ukusetyenziswa phantsi kweemeko zokuguguleka.
•Ukukwazi ukusebenza ngomatshini: Ezi ntsimbi zikwazi ukusebenza ngomatshini xa zishushu ngokufanelekileyo, nto leyo evumela iinkqubo zoomatshini ezisebenzayo ngexesha lokwenziwa.
•Ukuwelda: Zinokuwelda, nangona ukufudumeza kwangaphambili kunye nonyango lobushushu emva kokuwelda kunokufuneka ukugcina iimpawu ezifunekayo kunye nokuphepha iingxaki ezifana nokuqhekeka.
Ukwakhiwa kweekhemikhali:
| Ibanga | C | Mn | P | S | Si | Cr | Mo |
| 4140 | 0.38-0.43 | 0.75- 1.0 | 0.035 | 0.040 | 0.15-0.35 | 0.8-1.10 | 0.15-0.25 |
| 42CrMo4/ 1.7225 | 0.38-0.45 | 0.6-0.90 | 0.035 | 0.035 | 0.40 | 0.9-1.20 | 0.15-0.30 |
| I-SCM440 | 0.38-0.43 | 0.60-0.85 | 0.03 | 0.030 | 0.15-0.35 | 0.9-1.20 | 0.15-0.30 |
| B7 | 0.37-0.49 | 0.65-1.10 | 0.035 | 0.040 | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 |
Iimpawu zoomatshini:
| Ibanga | Amandla okuThamba [MPa] | Yiled Strengtu [MPa] | Ukwandiswa % |
| 4140 | 655 | 415 | 25.7 |
| 1.7225/42CrMo4 | 1080 | 930 | 12 |
| I-SCM440 | 1080 | 930 | 17 |
| B7 | 125 | 105 | 16 |
Isikhokelo semibuzo ebuzwa rhoqo:
Kutheni Ukhetha Thina?
•Ungafumana izinto ezifanelekileyo ngokweemfuno zakho ngexabiso eliphantsi kangangoko.
•Sikwabonelela ngamaxabiso okuhambisa izinto ezintsha, i-FOB, i-CFR, i-CIF, kunye namaxabiso okuhambisa izinto emnyango nomnyango. Sicebisa ukuba wenze isivumelwano sokuthumela izinto esiza kuba luncedo kakhulu.
•Izinto esizibonelelayo zinokuqinisekiswa ngokupheleleyo, ukusuka kwisatifikethi sovavanyo lwezinto eziluhlaza ukuya kwingxelo yokugqibela yobukhulu. (Iingxelo ziya kubonakala ngokwemfuneko)
•Siyaqinisekisa ukuba siza kunika impendulo zingadlulanga iiyure ezingama-24 (ngesiqhelo ngeyure enye)
•Nika ingxelo ye-SGS TUV.
•Sizinikele ngokupheleleyo kubathengi bethu. Ukuba akunakwenzeka ukuhlangabezana neemfuno zakho emva kokujonga zonke iindlela onokukhetha kuzo, asiyi kukukhohlisela ngokwenza izithembiso zobuxoki eziya kudala ubudlelwane obuhle nabathengi.
•Nika inkonzo yokumisa indawo enye.
4140 vs 42CRMO4 – Yintoni umahluko?
I-AISI 4140 kunye ne-42CrMo4 ziluhlobo olufanayo lwentsimbi, apho i-AISI 4140 iyimpawu yaseMelika kunye ne-42CrMo4 iyimpawu yaseYurophu. Zineempawu ezifanayo zeekhemikhali, amandla aphezulu, kunye nokuqina, okwenza zifaneleke ukusetyenziswa njengeegiya kunye neebholiti. Nangona zihlukile kwiimpawu kunye nemigangatho yengingqi, zihlala zithathwa njengezinokutshintshwa ngenxa yeempawu ezifanayo.
Yintoni intsimbi ye-42CrMo4?
I-42CrMo4 yintsimbi ye-chromium-molybdenum alloy echazwe yi-European standard EN 10083. Yaziwa ngamandla ayo aphezulu, ukuqina kwayo, kunye nokuqina kwayo okuhle. Ngomxholo wekhabhoni ophakathi kwe-0.38% ukuya kwi-0.45%, isetyenziswa kakhulu kwizicelo ezifuna izinto eziqinileyo, ezifana neegiya, ii-crankshafts, kunye neentonga zokudibanisa kumashishini afana neemoto kunye neenqwelo-moya. Intsimbi isabela kakuhle kunyango lobushushu, inika amandla okulungisa iipropati zoomatshini, kwaye ithathwa njengelingana nehlabathi liphela nezinye iimpawu ezifana ne-AISI 4140 kunye ne-SCM440.
Yintoni intsimbi ye-grade B7?
Ibanga B7 yinkcazo ekwimigangatho ye-ASTM A193, equka izixhobo zokubopha ezinamandla aphezulu ezisetyenziswa kwinkonzo yobushushu obuphezulu okanye yoxinzelelo oluphezulu. I-ASTM A193 ngumgangatho ophuhliswe yi-ASTM International (eyayisakwaziwa njenge-American Society for Testing and Materials) kwaye isetyenziswa kakhulu kumashishini eoyile negesi, i-petrochemical, kunye nokuvelisa umbane. Intsimbi yebanga B7 yintsimbi ye-chromium-molybdenum ene-alloy ephantsi ecinywayo kwaye ithanjiswa (iphathwa ngobushushu) ukuze kufezekiswe iimpawu zoomatshini ezifunwayo. Kubalulekile ukuqaphela ukuba intsimbi yebanga B7 idla ngokusetyenziswa kunye neenuts zebanga 2H ukuqinisekisa ukuhambelana nokusebenza kwizicelo ezifuna amandla. Xa kuchaziwe, izixhobo kufuneka zihlangabezane neemfuno ezichazwe kwimigangatho ye-ASTM A193 kunye ne-A194 ukuqinisekisa amandla afanelekileyo, ukuguquguquka, kunye nezinye iimpawu zoomatshini.
Abathengi bethu
Impendulo evela kubathengi bethu
Iibha zentsimbi ze-AISI 4140, 1.7225, 42CrMo4, SCM440, kunye ne-B7 zisabela kakuhle kunyango lobushushu, nto leyo evumela ukulungiswa kweempawu zoomatshini ezifana nobunzima kunye nokuqina. Ezi bha zentsimbi zibonisa amandla aphezulu okutsalwa, nto leyo ezenza zifaneleke ukusetyenziswa apho amandla eyinto ebalulekileyo. Zinika ukuqina okuhle kunye nokumelana nempembelelo, nto leyo ezenza zikwazi ukumelana nemithwalo enzima kunye noxinzelelo oluguquguqukayo. Iibha zentsimbi zinokuguquguquka kwaye zisetyenziswa kumashishini ahlukeneyo, kubandakanya iimoto, i-aerospace, ulwakhiwo, kunye nemveliso. Izinto ezidibanisayo, ezifana ne-chromium kunye ne-molybdenum, zinegalelo ekuphuculeni ukumelana nokuguguleka, nto leyo eyenza ezi bha zentsimbi zifanele ukusetyenziswa kwiimeko zokurhawuzelela.
Ukupakisha:
1. Ukupakisha kubaluleke kakhulu, ingakumbi xa impahla ithunyelwa kwamanye amazwe, apho impahla idlula kwiindlela ezahlukeneyo ukuze ifikelele kwindawo efanelekileyo, ngoko ke sibeka inkxalabo ekhethekileyo malunga nokupakisha.
2. I-Saky Steel ipakisha iimpahla zethu ngeendlela ezahlukeneyo ngokusekelwe kwiimveliso. Sipakisha iimveliso zethu ngeendlela ezininzi, ezinje,
