Ƙananan Faɗawa Alloy Kovar 4j29 Waya, Waya 29HK don Gilashin Rufe Gilashi
Alloy-4J29 ba wai kawai yana da haɓakar thermal mai kama da gilashi ba, amma ana iya yin la'akari da yanayin haɓakar zafin jiki wanda ba na kan layi ba sau da yawa don dacewa da gilashin, don haka barin haɗin gwiwa don jure wa yanayin zafi mai faɗi.A cikin sinadarai, yana haɗawa da gilashi ta hanyar matsakaicin oxide Layer na nickel oxide da cobalt oxide;rabon baƙin ƙarfe oxide yana da ƙasa saboda raguwa da cobalt.Ƙarfin haɗin gwiwa ya dogara sosai akan kauri da kuma hali.Kasancewar cobalt yana sa Layer oxide ya fi sauƙi don narkewa da narkewa a cikin narkakken gilashin.Launi mai launin toka, launin toka-shuɗi ko launin toka-launin ruwan kasa yana nuna hatimi mai kyau.Launi na ƙarfe yana nuna ƙarancin oxide, yayin da launin baƙar fata yana nuna ƙarfe mai ƙarfi, a cikin duka biyun yana haifar da raunin haɗin gwiwa.
Aikace-aikace:An fi amfani dashi a cikin kayan aikin injin injin lantarki da sarrafa fitarwa, bututu mai girgiza, bututu mai kunna wuta, gilashin magnetron, transistor, filogin hatimi, ba da sanda, jagorar da'ira, chassis, brackets da sauran rufewar gidaje.
Na yau da kullun%
| Ni | 28.5 ~ 29.5 | Fe | Bal. | Co | 16.8 ~ 17.8 | Si | ≤0.3 |
| Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Ƙarfin Ƙarfin Ƙarfi, MPA
| Lambar yanayin | Sharadi | Waya | Tari |
| R | Mai laushi | ≤585 | ≤570 |
| 1/4 I | 1/4 Mai wuya | 585-725 | 520-630 |
| 1/2 I | 1/2 Mai wuya | 655-795 | 590-700 |
| 3/4 I | 3/4 Mai wuya | 725-860 | 600-770 |
| I | Mai wuya | ≥850 | ≥700 |
Abubuwan dabi'un Jiki na yau da kullun
| Yawan yawa (g/cm3) | 8.2 |
| Rashin ƙarfin lantarki a 20ºC(Ωmm2/m) | 0.48 |
| Yanayin zafin jiki na resistivity(20ºC ~ 100ºC)X10-5/ºC | 3.7 ~ 3.9 |
| Matsayin Curie Tc/ºC | 430 |
| Modulus Elastic, E/Gpa | 138 |
Ƙimar haɓakawa
| θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
| 20 ~ 60 | 7.8 | 20-500 | 6.2 |
| 20 ~ 100 | 6.4 | 20-550 | 7.1 |
| 20-200 | 5.9 | 20 ~ 600 | 7.8 |
| 20-300 | 5.3 | 20-700 | 9.2 |
| 20-400 | 5.1 | 20-800 | 10.2 |
| 20-450 | 5.3 | 20 ~ 900 | 11.4 |
Ƙarfafawar thermal
| θ/ºC | 100 | 200 | 300 | 400 | 500 |
| λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
| Tsarin maganin zafi | |
| Annealing don rage damuwa | Mai zafi zuwa 470 ~ 540ºC kuma riƙe 1 ~ 2 h.Sanyi kasa |
| annealing | A cikin injin zafi mai zafi zuwa 750 ~ 900ºC |
| Rike lokaci | 14 min~1h. |
| Yawan sanyaya | Ba fiye da 10ºC/min sanyaya zuwa 200ºC |
