Z408 cast iron electrode: conforming to GBEZNiFe-1 equivalent to AWSENiFe-C1

Description: Z408 is a cast iron electrode with nickel iron alloy core and strong reducing graphite coating, which has the characteristics of high strength, good plasticity and low linear expansion coefficient. The crack resistance is similar to that of Z308 for gray cast iron, but stronger than Z308 for nodular cast iron. It also has good effect for cast iron with high phosphorus content (0.2% P), and its machinability is slightly worse than that of Z308 and Z508. It is used for welding gray cast iron and nodular cast iron at normal temperature or slightly preheated (to about 200 ℃). Both AC and DC.

Purpose: It is applicable to repair welding of important high-strength gray castings and ductile iron castings. Such as cylinder, engine seat, gear, roller, etc.

matters needing attention:

Before welding, the welding rod shall be baked at about 150 ℃ for 1h.

Z408 cast iron electrode: conforming to GBEZNiFe-1 equivalent to AWSENiFe-C1

Description: Z408 is a cast iron electrode with nickel iron alloy core and strong reducing graphite coating, which has the characteristics of high strength, good plasticity and low linear expansion coefficient. The crack resistance is similar to that of Z308 for gray cast iron, but stronger than Z308 for nodular cast iron. It also has good effect for cast iron with high phosphorus content (0.2% P), and its machinability is slightly worse than that of Z308 and Z508. It is used for welding gray cast iron and nodular cast iron at normal temperature or slightly preheated (to about 200 ℃). Both AC and DC.

Purpose: It is applicable to repair welding of important high-strength gray castings and ductile iron castings. Such as cylinder, engine seat, gear, roller, etc.

matters needing attention:

Before welding, the welding rod shall be baked at about 150 ℃ for 1h.

Z408 cast iron electrode: conforming to GBEZNiFe-1 equivalent to AWSENiFe-C1

Description: Z408 is a cast iron electrode with nickel iron alloy core and strong reducing graphite coating, which has the characteristics of high strength, good plasticity and low linear expansion coefficient. The crack resistance is similar to that of Z308 for gray cast iron, but stronger than Z308 for nodular cast iron. It also has good effect for cast iron with high phosphorus content (0.2% P), and its machinability is slightly worse than that of Z308 and Z508. It is used for welding gray cast iron and nodular cast iron at normal temperature or slightly preheated (to about 200 ℃). Both AC and DC.

Purpose: It is applicable to repair welding of important high-strength gray castings and ductile iron castings. Such as cylinder, engine seat, gear, roller, etc.

matters needing attention:

Before welding, the welding rod shall be baked at about 150 ℃ for 1h.

Z100 cast iron electrode

Model GB/T: EZFe-2

Note: The cast iron electrode with low carbon steel core and oxidizing coating burns off the carbon and silicon in the molten pool during welding. The weld is steel structure, and the weld can fuse well with the parent material. However, the coating has strong oxidation, large penetration, high hardness in the fusion zone, poor crack resistance and processability, AC and DC dual-use, and low price.

Purpose: It is used for repairing defects of general cast iron castings, and can weld and repair old steel ingot moulds after long-term use, which cannot be processed after welding.

Z116/Z117 high vanadium cast iron electrode

Model GB/T: EZV

Description: low carbon steel core, low hydrogen type high vanadium cast iron welding rod, the welding seam forms a steel structure with ferrite as the matrix and vanadium carbide dispersion distribution, which has good crack resistance, and adopts DC reverse connection.

Purpose: It is used for repairing defects of iron castings, such as automobile cylinder block, frame gear box, etc., as well as high-strength iron castings and ductile iron castings. The weldment can be cut after welding without preheating, but the machinability is not as good as Z508, Z308 and Z408.

Chemical composition of deposited metal/%

C ≤ 0.25Si ≤ 0.7Mn ≤ 1.5Fe residual V8-13

Z122Fe cast iron electrode

Model GB/T: EZFe-2

Description: Low carbon steel core iron powder titanium-calcium type cold welding cast iron electrode, due to adding a large amount of iron powder and transiting to the weld through the coating, thus diluting the carbon in the cast iron, the weld and cast iron are fused firmly, but the fusion zone has high hardness, good crack resistance, good processability, easy operation, stable arc splash, easy slag removal, beautiful weld shape, AC and DC dual-use.

Usage: used for repairing the non-machined surface of various gray iron castings.

Z208 cast iron electrode conforms to GBEZC equivalent to AWSEC1

Description: Z208 is a cast iron electrode with low carbon steel core and strong graphitized coating. The weld can become gray cast iron during slow cooling, with poor crack resistance. It can be used for both AC and DC with low price.

Usage: used for repairing defects of gray cast iron.

matters needing attention:

1. Before welding, the welding rod must be baked at about 150 ℃ for 1h.

2. This welding rod is not suitable for important casting structures that bear stress and impact.

3. The defects of small thin-walled castings with small rigidity can be repaired without preheating, while the general weldment needs to be preheated to 400 ℃, and the heat preservation and slow cooling after welding, so the welding repair may be cut.

Z208DF cast iron electrode

Model GB/T: EZC

Description: The steel core cast iron cold welding electrode has strong graphitization and ferritization ability. The cold welding joint has excellent crack resistance and machinability. It can be used for both AC and DC.

Purpose: It is used for cold welding, semi-hot welding or hot welding of various defects of gray cast iron, and for repairing the machined surface and non-machined surface of gray cast iron.

Chemical composition of deposited metal/%

C3.5-4Si3.5-4Mn0.4-0.75Fe residual Ni ≤ 1

Z238 cast iron electrode conforms to GBEZCQ

Note: Z238 is a nodular cast iron electrode with low carbon steel core and strong graphitization coating. Due to the addition of a certain amount of spheroidizing agent, the graphite in the deposited metal will precipitate in a spherical shape during the cooling process, which can be used for both AC and DC purposes.

Purpose: for welding and repairing nodular iron castings.

matters needing attention:

1. Before welding, the welding rod must be baked at about 250 ℃ for 1h.

2. Before welding, the weldment shall be preheated to about 500 ℃. After welding, heat preservation and slow cooling are required, and the repair welding may be cut.

3. Heat treatment specification

Normalizing treatment: heat preservation at 900-920 ℃ for 2.5h, furnace cooling to 730-750 ℃ for 2h, take out air cooling.

Annealing treatment: heat preservation at 900-920 ℃ for 2.5h, furnace cooling to below 100 ℃.

Z238DF cast iron electrode

Model GB/T: EZCQ

Description: The cold-welding electrode of steel-cored nodular cast iron, with special nodulizing agent and strong ferrite element, has good crack resistance and mechanical properties, and can be used for both AC and DC.

Purpose: Mainly used for welding the machined surface and non-machined surface of various ductile iron castings.

Chemical composition of deposited metal/%

C3.2-4Si3.2-4Mn ≤ 0.8Fe residual Ni ≤ 1 nodulizer 0.04-0.15

Z238SnCu cast iron electrode

Model GB/T: EZCQ

Description: low carbon steel core, strongly graphitized cast iron electrode, adding a certain amount of nodulizing agent and tin copper strengthening element, the deposited metal has high spheroidizing stability, good mechanical properties, AC and DC dual-use.

Usage: used for welding and repair of nodular cast iron, vermicular cast iron, alloy cast iron, malleable cast iron and gray cast iron

Chemical composition of deposited metal/%

C3.5-4Si3.5Mn ≤ 0.8REMgCuSn appropriate

Z248 cast iron electrode

Model GB/T: EZC

Note: cast iron core and strongly graphitized cast iron electrode have strong graphitization ability. The deposited metal and base metal are basically the same in structure, performance and color, and can be used for both AC and DC.

Usage: used for welding repair of gray cast iron, especially for welding repair of large iron castings.

Chemical composition of deposited metal/%

C2-4Si2.5-6.5Mn ≤ 0.75Fe surplus

Z258 cast iron electrode

Model GB/T: EZCQ

Note: cast iron core, strongly graphitized cast iron electrode, containing yttrium rare earth or magnesium, has strong spheroidizing ability, and the deposited metal is basically the same as the base metal in structure, properties and color, and is used for both AC and DC.

Usage: used for welding repair of nodular cast iron, especially for welding repair of large nodular cast iron.

Chemical composition of deposited metal/%

C3.2-4Si3.2-4Mn ≤ 0.8Fe residual Ni ≤ 1 nodulizer 0.04-0.15

Z238F/Z268 cast iron electrode

Model GB/T: EZCQ

Note: The cast iron electrode with carbon steel core and strong graphitization, added with special spheroidizing agent, has good crack resistance and mechanical properties. The deposited metal is basically similar to the base metal in structure, properties and color.

Usage: used for welding repair of various nodular cast iron and high-strength gray iron.

Chemical composition of deposited metal/%

C ≈ 3.2Si ≈ 4Mn ≈ 0.5 spheroidizing agent

Z308 cast iron electrode conforms to GBEZNi-1 equivalent to AWSENi-C1

Note: Z308 is a cast iron electrode with pure nickel core and strong reducing graphite coating. When welding, the weldment can not be preheated and has good crack resistance and processing performance. Nickel is expensive and can only be used when other welding rods cannot meet the requirements. Both AC and DC.

Usage: used for repair welding of thin cast iron parts and machined surfaces, such as engine seat, machine tool guide rail, gear seat and other important gray iron parts.

matters needing attention:

1. Before welding, the welding rod must be baked at about 150 ℃ for 1h.

2. The stress in the weld repair area can be eliminated by hammering the weld to avoid cracks.