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Welding rod additive containing cerium oxide and method for preparing welding rod additive containing cerium oxide

A technology containing cerium oxide and cerium oxide, applied in welding equipment, metal processing equipment, welding medium, etc., can solve the problem that the welding rod is difficult to meet the market demand.

Active Publication Date: 2014-10-29
ANHUI SHENGHONG ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium titanate, sodium titanate and potassium sodium titanate are common additives used to prepare electrodes. These titanates can stabilize the arc, reduce arc voltage and reduce metal spatter during electrode welding. However, with the modern industry The quality requirements of electric welding workpieces are constantly improving, and the electrodes prepared by using traditional titanate as additives have been difficult to meet market demand, especially in military, high-tech and other industries. Therefore, the development of welding additives with superior performance has always been one of the important topics for technicians to study. one

Method used

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  • Welding rod additive containing cerium oxide and method for preparing welding rod additive containing cerium oxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: the preparation of welding rod additive

[0016] 1) Weighing high-purity titanium dioxide and electronic grade potassium carbonate according to a molar ratio of 3:2, then weighing 3% cerium oxide of the total mass of high-purity titanium dioxide and electronic grade potassium carbonate, and mixing the three to obtain a mixture;

[0017] 2) Put the mixture into a ball mill and mill it for 4 hours to obtain a mixed powder;

[0018] 3) Put the mixed powder in the mullite sagger, push it into the tunnel kiln, set the tunnel kiln to heat up to 1200°C at a heating rate of 250°C / h, keep it warm for 4 hours, and then turn off the heating system of the kiln , naturally cool down for 8 hours, and then take out the mullite sagger;

[0019] 4) After the block synthesized in the mullite sagger is naturally cooled to normal temperature, the block is crushed and ground until it passes through a 200-mesh sieve to obtain the electrode additive.

Embodiment 2

[0020] Embodiment 2: the preparation of welding rod additive

[0021] 1) Weigh high-purity titanium dioxide and electronic-grade potassium carbonate according to a molar ratio of 1:1, then weigh 5% cerium oxide of the total mass of high-purity titanium dioxide and electronic-grade potassium carbonate, and mix the three to obtain a mixture;

[0022] 2) Put the mixture into a ball mill and mill it for 4 hours to obtain a mixed powder;

[0023] 3) Put the mixed powder in the mullite sagger, push it into the tunnel kiln, set the tunnel kiln to heat up to 1195°C at a heating rate of 260°C / h, keep it warm for 4.5h, and then turn off the heating of the kiln system, cool down naturally for 8 hours, and then take out the mullite sagger;

[0024] 4) After the block synthesized in the mullite sagger is naturally cooled to normal temperature, the block is crushed and ground until it passes through a 100-mesh sieve to obtain the electrode additive.

Embodiment 3

[0025] Embodiment 3: the preparation of welding rod additive

[0026] 1) Take high-purity titanium dioxide, electronic-grade potassium carbonate and electronic-grade sodium carbonate according to the molar ratio of 3:1.5:1.5, then weigh 5% of the total mass of high-purity titanium dioxide, electronic-grade potassium carbonate and electronic-grade sodium carbonate Cerium oxide, mixing the four raw materials to obtain a mixture;

[0027] 2) Put the mixture into a ball mill and mill it for 4 hours to obtain a mixed powder;

[0028] 3) Put the mixed powder in the mullite sagger, push it into the tunnel kiln, set the tunnel kiln to heat up to 1200°C at a heating rate of 250°C / h, keep it warm for 4 hours, and then turn off the heating system of the kiln , naturally cool down for 8 hours, and then take out the mullite sagger;

[0029] 4) After the block synthesized in the mullite sagger is naturally cooled to normal temperature, the block is crushed and ground until it passes throu...

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Abstract

The invention discloses a welding rod additive containing cerium oxide and a method for preparing the welding rod additive containing cerium oxide. The method for preparing the welding rod additive containing cerium oxide comprises the following steps that (a) high-purity titanium dioxide, carbonate and cerium oxide are weighed according to a proportion and then are mixed, so that a mixture is obtained; (b) the mixture is placed into a ball mill for ball milling for three hours to five hours, and a powder mixture is obtained; (c) the powder mixture is contained in a bowl, the bowl containing the powder mixture is pushed into a furnace, the temperature of the furnace is made to rise to 1195 DEG C-1205 DEG C with the temperature rising rate of 240 DEG C / h-260 DEG C / h, the temperature is maintained for 3.5 hours to 4.5 hours, then a temperature rising system of the furnace is stopped, and the bowl is taken out of the furnace after natural cooling is conducted for 7.5 hours to 8.5 hours; (d) after a synthesized lump in the bowl is naturally cooled to be at the normal temperature, the lump is smashed and ground to be particles which at least can pass through a 100-mesh screen, and thus the welding rod additive containing cerium oxide is obtained. When the welding rod additive is added to welding rods, arc voltage can be lowered when the welding rods are used, electric arcs can be stabilized, splashing is reduced, and the welding strength of the welding rods can be greatly improved.

Description

technical field [0001] The invention relates to the field of welding materials, in particular to a welding rod additive containing cerium oxide and a preparation method thereof. Background technique [0002] The welding rod is a metal strip that is melted and filled at the weld seam of the welding workpiece during gas welding or electric welding. It is composed of a welding core and a coating that is uniformly and centripetally pressed on the welding core. The so-called welding core is the metal core of the welding rod. , when using electrode welding, the welding core accounts for a part of the entire weld metal, so the chemical composition of the welding core directly affects the quality of the weld, and the coating on the surface of the electrode mainly plays a role in improving the stability of the arc combustion during the welding process. It can ensure the deoxidation of the weld seam and reduce the metal spatter after liquefaction. Potassium titanate, sodium titanate ...

Claims

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Application Information

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IPC IPC(8): B23K35/36B23K35/40
CPCB23K35/3601B23K35/3602B23K35/3608B23K35/40
Inventor 白春富李建林孙安红唐宗贵
Owner ANHUI SHENGHONG ELECTRONICS
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