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Composition And Preparation of Dry Cast Iron Enamel

Composition And Preparation of Dry Cast Iron Enamel

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  • Time of issue:2022-07-07
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(Summary description)Dry cast iron enamel is mainly used for large castings, such as sanitary equipment, brackets, rulers, barber chairs, etc. Its composition is far more complex than that

Composition And Preparation of Dry Cast Iron Enamel

(Summary description)Dry cast iron enamel is mainly used for large castings, such as sanitary equipment, brackets, rulers, barber chairs, etc. Its composition is far more complex than that

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2022-07-07
  • Views:0
Information

Dry cast iron enamel is mainly used for large castings, such as sanitary equipment, brackets, rulers, barber chairs, etc. Its composition is far more complex than that of low carbon steel enamel, including a variety of fluxes, and the opacifier must be directly fused in the frit.

All dry cast iron enamels use an enamel primer to protect the iron embryo from oxidizing and rusting when heated. The enamel ground coat can dissolve iron oxide and impurities on the surface of the casting, and can also be used as an insulating layer to prevent the components in the cover coat from being reduced by iron. The enamel ground coat is wetted on the clean casting in the form of a thin slurry, dried and fired before the cover coat is applied. This kind of ground coat needs to have a wide firing temperature and is not easy to volatilize.

Chemical composition of dry cast iron enamel primer after melting

Chemical Composition

Weight Range %

Chemical Composition

Weight Range %

SiO2

40-50

TiO2

0-2

B2O3

17-23

MnO2

2-5

Al2O3

0-3

NiO

0.5-1

K2O+Na2O

15-25

CoO

0.5-1

Ca2O

1-5

 

 

 

Chemical composition of dry cast iron enamel finish after melting

Titanium Enamel Chemical Composition

Weight Range %

 

 

SiO2

29-36

SiO2

33-40

B2O3

20-28

B2O3

11-21

Al2O3

3-5

Al2O3

3-5

K2O

2-3

K2O

2-3

Na2O

10-16

Na2O

10-15

TiO2

8-15

SbO3

8-15

P2O5

1-2

PbO

0-5

MgO

1-2

CaF2

2-3

Na2SiF6

8-10

Na2SiF6

8-12

 

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