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Ceramic weld backing and production process

A ceramic welding and production process technology, applied in the field of cutting and welding, can solve the problems of affecting the quality of the back welding, poor mechanical properties of the weld, low density, etc., to improve the overall welding quality, good mechanical properties of the weld, and compactness. high effect

Inactive Publication Date: 2013-02-06
TIANJIN SHENGSHI WELDING AUX MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ceramic welding backing has low density, high moisture absorption rate, poor mechanical properties of the weld seam, and is easy to stick to slag during welding, which affects the welding quality of the back side

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The components of raw materials are proportioned according to the following parts by weight, 12 parts of quartz powder, 18 parts of bauxite, 8 parts of feldspar powder, 19 parts of kaolin, 5 parts of talcum powder, 18 parts of Shanxi clay, 13 parts of magnesia mud, Suzhou 7 parts of soil; mix the raw materials according to the parts by weight of each component; mix the above raw materials and water in a mass ratio of 1:1, put them in a ball mill, and ball mill for 10 hours to obtain a slurry; filter the slurry, and filter the filtered material Put it into a dryer, dry it for 28 minutes, and then grind it into granules; put the above granules into a mold, press them into pieces and put them into a sagger, put the sagger into a heating device, pressurize to 53Mpa, and use a 1340℃ The temperature is sintered, and the sintering time is 9 hours; take out the sagger, and the finished product is obtained after cooling.

Embodiment 2

[0016] The components of raw materials are proportioned according to the following parts by weight, 11 parts of quartz powder, 19 parts of bauxite, 9 parts of feldspar powder, 18 parts of kaolin, 4 parts of talcum powder, 19 parts of Shanxi clay, 14 parts of magnesia mud, Suzhou 8 parts of soil; mix the raw materials according to the parts by weight of each component; mix the above raw materials and water in a ratio of 1:1 by mass, put them into a ball mill, and ball mill for 11 hours to obtain a slurry; filter the slurry, and filter the Put it in a dryer, dry it for 20 minutes, and then grind it into granules; put the above granules into a mold, press them into pieces and put them into a sagger, put the sagger into a heating device, pressurize to 55Mpa, and use a 1300℃ The temperature is sintered, and the sintering time is 8 hours; the sagger is taken out, and the finished product is obtained after cooling.

Embodiment 3

[0018] The components of raw materials are proportioned according to the following parts by weight, 13 parts of quartz powder, 17 parts of bauxite, 7 parts of feldspar powder, 17 parts of kaolin, 3 parts of talcum powder, 17 parts of Shanxi clay, 15 parts of magnesia mud, Suzhou 9 parts of soil; mix the raw materials according to the parts by weight of each component; mix the above raw materials and water in a ratio of 1:1 by mass, put them into a ball mill, and ball mill for 12 hours to obtain a slurry; filter the slurry, and filter the Put it in a dryer, dry it for 30 minutes, and then grind it into granules; put the above granules into a mold, press them into pieces and put them into a sagger, put the sagger into a heating device, pressurize to 40Mpa, and use a 1400℃ The temperature is sintered, and the sintering time is 10 hours; the sagger is taken out, and the finished product is obtained after cooling.

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Abstract

A ceramic weld backing is characterized by comprising the following raw materials by weight: 11-13 parts of quartz powder, 17-19 parts of bauxite, 7-9 parts of feldspar powder, 17-19 parts of kaolin, 3-5 parts of talc powder, 17-19 parts of Shansi clay, 13-15 parts of magnesium mud and 7-9 parts of Suzhou soil. A production process of the ceramic weld backing is characterized by comprising the following steps of: proportioning materials, blending and ball-milling, drying and granulating, pressure-shaping and calcining to obtain ceramic. The ceramic weld backing has the beneficial effects that an appropriate production process is used for processing raw materials, a ceramic process and a welding material process are combined, and optimal shaping density and most appropriate sintering temperature and time are matched, so that the compactness of the sintered gasket is high, the volume density achieves 1.99g / cm<3>, the moisture absorption rate is low and 0.11% and is much lower the requirement of less than 0.4% in the ceramic weld backing standard of GB / T3715-1995; and therefore, the ceramic weld backing has wonderful welded seam mechanical properties, the folding strength of the gasket achieves 38.7MPa, and is well applicable to various welding requirements, thereby being of a tremendous aid in improving welding quality.

Description

[0001] Technical field [0002] The present invention relates to the technical field of cutting and welding, and in particular to a material and production process of a welding pad. Background technique [0003] The traditional welding process uses double-sided welding. After welding one side, weld the other side again, which is time-consuming and material-consuming. In the 1990s, a method of single-sided welding and double-sided forming emerged abroad. A material called a liner is affixed to the back of the weld, and then welded from the front with a welding wire. After welding, the back liner is removed. The welding is complete. Compared with traditional welding methods, the single-sided welding and double-sided forming process can save 50%-70% of electricity, save 40%-60% of working hours, and reduce costs by 40%-50%. Therefore, it is suitable for ships, pressure vessels, and pipelines with large welding volume. It has been widely used in steel structure manufacturing i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/22
Inventor 张秀礼
Owner TIANJIN SHENGSHI WELDING AUX MATERIALS
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