E316h type stainless steel submerged arc welding welding material for fast neutron reactor equipment manufacturing and preparation method thereof

Abstract

The invention discloses E316H stainless steel submerged arc welding welding material for fast neutron reactor equipment manufacturing and a preparation method thereof. The mass percentage of each element of the welding core in the welding wire: C: 0.05%-0.07%, Si: 0.10%-0.30% , Mn: 1.25%~2.0%, P≤0.005%, S≤0.005%, Cr: 18.0%~20.50%, Ni: 10.0%~12.0%, Mo: 2.20% or 2.25%, Cu≤0.020%, Co≤ 0.010%, B≤0.0005%, Nb≤0.01%, As≤0.005%, Sn≤0.002%, Sb≤0.001%, and the balance is Fe. The mass percentage of each component of the flux is: magnesium oxide: 8-15%, aluminum oxide: 20-40%, calcium fluoride: 30-40%, marble: 5-10%, ferrosilicon (Si-Fe): 2 to 4%, metal chromium: 2 to 4%, the mass percentage of O element and H element of the deposited metal obtained by matching the welding wire and the flux is 0.047, and the mass percentage of H element is 0.0008. The deposited metal of the present invention has high strength at room temperature and high temperature , good impact toughness, and low content of [H] and [O], which can meet the welding of 316H austenitic stainless steel for fast neutron reactors, and can also be used for welding of other 300 series austenitic stainless steels.

Description

technical field

[0001] The invention relates to the field of welding materials, and relates to an E316H type austenitic stainless steel submerged arc welding wire and flux and a preparation method thereof. Background technique

[0002] The fast neutron reactor can increase the utilization rate of natural uranium resources from about 1% to more than 60% of the currently widely used pressurized water reactor in nuclear power plants; it can transmute the long-lived radioactive waste produced by the pressurized water reactor to achieve the smallest radioactive waste. change. As the fourth-generation nuclear power reactor, fast neutron reactor can realize the recycling of fast reactor and pressurized water reactor fuel, and is the leading product of future nuclear power development. The development and promotion of fast reactor technology is of great significance to promoting the sustainable development of my country's nuclear power and the establishment of an advanced fuel cycl...

Examples

specific Embodiment

[0019] (1) According to the percentage content in Table 1, take by weighing the raw materials of each group of flux, and carry out dry mixing at normal temperature;

[0020] (2) Sieve the dry mixed material with a 40-mesh sieve to remove the inclusions in the material;

[0021] (3) The sieved material is re-weighed, and the weight of the re-weighing is: the weight of each single dry mix material is 50 ± 0.5Kg, then 10kg of water glass is added, and the material is uniformly humidified at room temperature;

[0022] (4) The material added with water glass for uniform humidity control is baked at a temperature of 150±5°C, and sintered at a high temperature of 650-800°C;

[0023] (5) Screen the materials sintered at high temperature, and select particles larger than 10 meshes but smaller than 80 meshes as finished products for packaging.

[0024] Table 1 Examples of each group of raw materials for fluxes

[0025]

[0026] The two batches of welding wires in Table 2 were used ...

technical field

[0001] The invention relates to the field of welding materials, and relates to an E316H type austenitic stainless steel submerged arc welding wire and flux and a preparation method thereof. Background technique

[0002] The fast neutron reactor can increase the utilization rate of natural uranium resources from about 1% to more than 60% of the currently widely used pressurized water reactor in nuclear power plants; it can transmute the long-lived radioactive waste produced by the pressurized water reactor to achieve the smallest radioactive waste. change. As the fourth-generation nuclear power reactor, fast neutron reactor can realize the recycling of fast reactor and pressurized water reactor fuel, and is the leading product of future nuclear power development. The development and promotion of fast reactor technology is of great significance to promoting the sustainable development of my country's nuclear power and the establishment of an advanced fuel cycl...

Examples

specific Embodiment

[0019] (1) According to the percentage content in Table 1, take by weighing the raw materials of each group of flux, and carry out dry mixing at normal temperature;

[0020] (2) Sieve the dry mixed material with a 40-mesh sieve to remove the inclusions in the material;

[0021] (3) The sieved material is re-weighed, and the weight of the re-weighing is: the weight of each single dry mix material is 50 ± 0.5Kg, then 10kg of water glass is added, and the material is uniformly humidified at room temperature;

[0022] (4) The material added with water glass for uniform humidity control is baked at a temperature of 150±5°C, and sintered at a high temperature of 650-800°C;

[0023] (5) Screen the materials sintered at high temperature, and select particles larger than 10 meshes but smaller than 80 meshes as finished products for packaging.

[0024] Table 1 Examples of each group of raw materials for fluxes

[0025]

[0026] The two batches of welding wires in Table 2 were used ...

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