High density ceramic welding pad and production method thereof
A technology for welding pads and production methods, which is applied in the field of high-density ceramic welding pads and production, can solve the problems of poor formation of the back of the weld and low product density, and achieve low porosity, good moisture resistance, and high density Effect
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Embodiment 1
[0034] 1. Select clay, bauxite, quartz sand, talcum powder, and potassium feldspar as five raw materials. The materials used are all first-class products, and their indicators are as follows:
[0035] indicators
level
Refractoriness
℃≥
water absorption
%≤
al 2 o 3 +TiO 2
Fe 2 o 3 ≤
hard
clay
Clinker
premium product
44-50
1.2
1750
3
first grade
42-48
2.5
1730
3
Secondary product
36-42
3.5
1670
5
Tertiary product
30-36
3.5
1630
5
soft
semi soft
quality
first grade
>30
2
1670
(loss on ignition) 17
Secondary product
26-30
2.5
1610
17
Tertiary product
22-26
3.5
1580
17
[0036] level
ch...
Embodiment 2
[0048] Others are the same as in Example 1, except that the percentage by weight of each component of the raw material is 27 kg of clay, 26 kg of bauxite, 12 kg of quartz sand, 22 kg of talcum powder, and 13 kg of potassium feldspar, and the produced ceramic lining contains 52% Silica SiO 2 , 36% aluminum oxide Al 2 o 3 , 0.5% iron oxide FeO, 0.4% calcium oxide CaO, 10% magnesium oxide MgO, 1.1% potassium oxide and sodium oxide mixture K 2 O+Na 2 O's ceramic spacer blocks.
Embodiment 3
[0050] Others are the same as in Example 1 or Example 2. During the processing, the formed blank is dried in a temperature environment of 5-70° C., and then fired until the moisture content is lower than 6%. The sintering temperature is 1150-70° C. 1600°C. Drying may be performed at normal temperature, or may be dried by heating.
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