Flux-cored wire for low alloy structure steel and preparing method of flux-cored wire

Abstract

The invention discloses a flux-cored wire for low alloy structure steel and a preparing method of the flux-cored wire. The flux-cored wire is composed of a flux core and stainless steel outer skin wrapping the outer side of the flux core; and raw materials of the flux core comprise chromium powder, silica powder, manganese powder, titanium powder, titanium boride powder, silicon nitride powder, magnesium aluminum alloy powder, titanium dioxide powder, iron oxide powder, indium oxide powder, cerium oxide powder, praseodymium oxide powder, carbonate, ferro-molybdenum powder, ferro vanadium powder, ferrozirconium powder and reduced iron powder. According to the flux-cored wire for the low alloy structure steel and the preparing method of the flux-cored wire, the flux-cored wire has the performances that splashing is small, molding is good, deslagging is easy, deposited metal texture is compact, air holes and cracks are avoided, bonding with parent metal is good, and performance is stable; deposited metal has the good hardness, low temperature toughness, abrasion resistance, corrosion resistance, creep resistance and the like, and the good economical benefits are achieved.

Description

technical field

[0001] The invention relates to the field of welding wire technology, in particular to a low-alloy structural steel flux-cored welding wire and a preparation method thereof. Background technique

[0002] With the rapid development of modern industry, low-alloy steel is more and more widely used in construction, chemical industry, petroleum, aviation and other fields. For the welding of low-alloy steel, the existing flux-cored wire has large spatter and poor formability. Corrosion resistance, wear resistance, poor low temperature toughness and poor comprehensive performance of hardness all seriously affect the production and use of low alloy steel and flux cored wire. Contents of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a low-alloy structural steel flux-cored welding wire and its preparation method. The flux-cored welding wire has the advantages of small spatter, good molding...

Examples

Embodiment 1

[0014] A low-alloy structural steel flux-cored welding wire proposed by the present invention is composed of a flux core and a stainless steel sheath coated on the outside of the flux core. The raw materials of the flux core include: 1 part of chromium powder, 0.6 part of silicon powder, manganese powder 0.1 part, titanium powder 0.6 part, titanium boride powder 0.6 part, silicon nitride powder 0.5 part, magnesium aluminum alloy powder 0.2 part, titanium dioxide powder 0.4 part, iron oxide powder 0.3 part, indium oxide powder 0.1 part, cerium dioxide powder 0.06 parts, 0.12 parts of praseodymium oxide powder, 0.8 parts of carbonate, 1 part of molybdenum iron powder, 0.3 parts of vanadium iron powder, 0.5 parts of zirconium iron powder, 90 parts of reduced iron powder.

Embodiment 2

[0016] A low-alloy structural steel flux-cored welding wire proposed by the present invention is composed of a flux core and a stainless steel sheath coated on the outside of the flux core. The raw materials of the flux core include: 2 parts of chromium powder, 0.2 parts of silicon powder, manganese powder 0.2 parts, titanium powder 0.2 parts, titanium boride powder 1.2 parts, silicon nitride powder 0.2 parts, magnesium aluminum alloy powder 0.6 parts, titanium dioxide powder 0.1 parts, iron oxide powder 0.7 parts, indium oxide powder 0.04 parts, cerium oxide powder 0.12 parts, 0.06 parts of praseodymium oxide powder, 1.5 parts of carbonate, 0.5 parts of molybdenum iron powder, 0.6 parts of vanadium iron powder, 0.2 parts of zirconium iron powder, 100 parts of reduced iron powder.

Embodiment 3

[0018] A low-alloy structural steel flux-cored welding wire proposed by the present invention is composed of a flux core and a stainless steel sheath coated on the outside of the flux core. The raw materials of the flux core include: 1.6 parts of chromium powder, 0.42 parts of silicon powder, manganese powder 0.16 parts, titanium powder 0.44 parts, titanium boride powder 0.92 parts, silicon nitride powder 0.32 parts, magnesium aluminum alloy powder 0.45 parts, titanium dioxide powder 0.22 parts, iron oxide powder 0.45 parts, indium oxide powder 0.06 parts, cerium oxide powder 0.08 parts, praseodymium oxide powder 0.08 parts, carbonate 1.25 parts, molybdenum iron powder 0.75 parts, vanadium iron powder 0.48 parts, zirconium iron powder 0.32 parts, reduced iron powder 96 parts.

[0019] Wherein, the raw material of carbonate is the mixture that lithium carbonate, sodium carbonate, potassium carbonate, iron carbonate, manganese carbonate are formed by weight ratio 2:1:1:2:1;

[0...

technical field

[0001] The invention relates to the field of welding wire technology, in particular to a low-alloy structural steel flux-cored welding wire and a preparation method thereof. Background technique

[0002] With the rapid development of modern industry, low-alloy steel is more and more widely used in construction, chemical industry, petroleum, aviation and other fields. For the welding of low-alloy steel, the existing flux-cored wire has large spatter and poor formability. Corrosion resistance, wear resistance, poor low temperature toughness and poor comprehensive performance of hardness all seriously affect the production and use of low alloy steel and flux cored wire. Contents of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a low-alloy structural steel flux-cored welding wire and its preparation method. The flux-cored welding wire has the advantages of small spatter, good molding...

Examples

Embodiment 1

[0014] A low-alloy structural steel flux-cored welding wire proposed by the present invention is composed of a flux core and a stainless steel sheath coated on the outside of the flux core. The raw materials of the flux core include: 1 part of chromium powder, 0.6 part of silicon powder, manganese powder 0.1 part, titanium powder 0.6 part, titanium boride powder 0.6 part, silicon nitride powder 0.5 part, magnesium aluminum alloy powder 0.2 part, titanium dioxide powder 0.4 part, iron oxide powder 0.3 part, indium oxide powder 0.1 part, cerium dioxide powder 0.06 parts, 0.12 parts of praseodymium oxide powder, 0.8 parts of carbonate, 1 part of molybdenum iron powder, 0.3 parts of vanadium iron powder, 0.5 parts of zirconium iron powder, 90 parts of reduced iron powder.

Embodiment 2

[0016] A low-alloy structural steel flux-cored welding wire proposed by the present invention is composed of a flux core and a stainless steel sheath coated on the outside of the flux core. The raw materials of the flux core include: 2 parts of chromium powder, 0.2 parts of silicon powder, manganese powder 0.2 parts, titanium powder 0.2 parts, titanium boride powder 1.2 parts, silicon nitride powder 0.2 parts, magnesium aluminum alloy powder 0.6 parts, titanium dioxide powder 0.1 parts, iron oxide powder 0.7 parts, indium oxide powder 0.04 parts, cerium oxide powder 0.12 parts, 0.06 parts of praseodymium oxide powder, 1.5 parts of carbonate, 0.5 parts of molybdenum iron powder, 0.6 parts of vanadium iron powder, 0.2 parts of zirconium iron powder, 100 parts of reduced iron powder.

Embodiment 3

[0018] A low-alloy structural steel flux-cored welding wire proposed by the present invention is composed of a flux core and a stainless steel sheath coated on the outside of the flux core. The raw materials of the flux core include: 1.6 parts of chromium powder, 0.42 parts of silicon powder, manganese powder 0.16 parts, titanium powder 0.44 parts, titanium boride powder 0.92 parts, silicon nitride powder 0.32 parts, magnesium aluminum alloy powder 0.45 parts, titanium dioxide powder 0.22 parts, iron oxide powder 0.45 parts, indium oxide powder 0.06 parts, cerium oxide powder 0.08 parts, praseodymium oxide powder 0.08 parts, carbonate 1.25 parts, molybdenum iron powder 0.75 parts, vanadium iron powder 0.48 parts, zirconium iron powder 0.32 parts, reduced iron powder 96 parts.

[0019] Wherein, the raw material of carbonate is the mixture that lithium carbonate, sodium carbonate, potassium carbonate, iron carbonate, manganese carbonate are formed by weight ratio 2:1:1:2:1;

[0...