Lalacewar simintin ƙarfe na simintin ƙarfe da hanyar rigakafi

Lalacewar daya: Ba za a iya zuba ba

Siffofin: siffar simintin gyare-gyare ba ta cika ba, gefuna da sasanninta suna zagaye, waɗanda aka fi gani a sassa na bango na bakin ciki.

Dalilai:

1. Ruwan oxygen na baƙin ƙarfe yana da tsanani, carbon da silicon abun ciki yana da ƙasa, abun ciki na sulfur yana da girma;

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Hanyoyin rigakafin:

1. Bincika ko girman iskar ya yi yawa;

2. Ƙara relay coke, daidaita tsayin coke na kasa;

3. Inganta zafin simintin ɗimbin yawa da saurin yin simintin, kuma kar a yanke magudanar ruwa yayin simintin.

Laifi na biyu: raguwa sako-sako

Siffofin: farfajiya na pores yana da m kuma ba daidai ba, tare da lu'ulu'u na dendritic, ƙananan pores don shrinkage, ƙananan tarwatsawa don raguwa, ya fi kowa a cikin nodes masu zafi.

Dalilai:

1. Abubuwan da ke cikin carbon da silicon sun yi ƙasa sosai, raguwa yana da girma, ciyarwar mai tashi bai isa ba;

2. Zazzabi mai zafi yana da yawa kuma raguwa yana da girma;

3, Rigar wuyan yayi tsayi da yawa, sashe yayi karami;

4, yawan zafin jiki na simintin gyare-gyare ya yi ƙasa da ƙasa, rashin ruwa mara kyau na baƙin ƙarfe, yana shafar ciyarwa;

Hanyoyin rigakafin:

1. Sarrafa nau'in sinadarai na ƙwayar ƙarfe don hana ƙananan carbon da silicon abun ciki;

2. Tsananin sarrafa yawan zafin jiki;

3, m zane riser, idan ya cancanta, tare da sanyi baƙin ƙarfe, don tabbatar da jerin solidification;

4. Ƙara abun ciki na bismuth daidai.

Lalabi uku: zafi mai zafi, fashewar sanyi

Fasaloli: Tsatsa mai zafi shine karaya tare da iyakar hatsi a babban zafin jiki, tare da siffa mai banƙyama da launi mai oxidizing. Zafafan zafi na ciki yakan kasance tare tare da rami mai raguwa.

Cold crack yana faruwa a ƙananan zafin jiki, karaya mai jujjuyawa, siffa mai lebur, ƙyalli na ƙarfe ko ƙasa mai oxidized.

Dalilai:

1, solidification tsari shrinkage an katange;

2, Abubuwan da ke cikin carbon a cikin ƙarfe na ruwa ya yi ƙasa da ƙasa, abin da ke cikin sulfur ya yi yawa, kuma yawan zafin jiki ya yi yawa;

3, abun ciki na baƙin ƙarfe ruwa yana da girma;

4. Abubuwan hadaddun an cika su da wuri.

Hanyoyin rigakafin:

1, inganta nau'in, ainihin rangwame;

2. Yawan adadin carbon kada ya zama ƙasa da 2.3%;

3, sarrafa abun ciki na sulfur;

4, cupola zuwa cikakken tanda, girman iska ba zai iya zama babba ba;

5, guje wa yawan zafin jiki na simintin gyare-gyare, kuma inganta saurin sanyi, don tace hatsi;

6. Sarrafa marufi zazzabi.