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

Inactive Publication Date: 2005-01-26
大连金州明圆建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-density ceramic welding liner with good moisture resistance an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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

chemical composition%

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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PUM

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Abstract

The invention disclose a high density ceramic welding pad and production method thereof, wherein the pad comprises (by weight portion) silica dioxide SiO2 45-68%, aluminium trioxide Al2O3 20-39%, ferric oxide FeO 0.2-1.93%, calcium oxide CaO 0.2-1%, magnesium oxide MgO 0.3-13%, mixture of potassium oxide and sodium oxide K2O+Na2O 0.8-4.5%. The preparation process comprises the steps of disintegrating, batching, mixing, modeling, and burning.

Description

Technical field: [0001] The invention relates to a metal high-temperature welding backing, in particular to a high-density ceramic welding backing and a production method thereof. Background technique: [0002] In industries such as steel structure manufacturing and shipbuilding, welding construction accounts for a considerable part. The traditional welding construction is mainly double-sided welding, that is, arc gouging, grinding and cleaning the back side of the front side welding, and then the back side welding can still be carried out. In this way, it will inevitably cause the difficulty of the welder's overhead welding operation and large structural parts turning over. Workers are labor-intensive and waste materials, energy, etc. In order to solve the technical problems caused by double-sided welding, people invented a ceramic welding pad, which is to adhere a certain number of regular-shaped ceramic pads to the pressure-sensitive aluminum foil tape with high-temperat...

Claims

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Application Information

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IPC IPC(8): C04B35/04C04B35/10C04B35/14
Inventor 刘红于立新
Owner 大连金州明圆建材有限公司
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