Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod

An alloying and cast iron technology, applied in the field of flux-cored alloyed cast iron homogeneous gas welding wire and flux-cored alloyed cast iron homogeneous electrode, can solve the problem of white mouth and crack in welding repair area, long preheating process of hot welding, The problem of high content, to achieve the effect of enhancing the crack resistance of the weld

Inactive Publication Date: 2011-07-06
陕西普德尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high content of impurities such as sulfur and phosphorus in cast iron, low strength, and poor plasticity, its inherent solidification characteristics determine that during the welding repair process of cast iron, white spots and cracks are prone to occur in the welding repair area, especially under cold welding conditions. And the crack tendency is greater, which seriously affects the machining performance and service performance of castings
[0003] Use cast iron electrodes coated with graphitized coating on non-cast iron cores for cast iron welding, such as Z208 (low carbon steel core) electrodes, Z308 (pure nickel core) electrodes, Z408 (nickel iron core) electrodes, etc., although to a certain extent Reduce white spots and cracks, but because the composition, structure, performance and color of the weld do not match the casting, the crack resistance is poor, and it cannot meet the comprehensive performance requirements of repairs such as color consistency and performance matching.
[0004] Applying welding materials of the same quality as cast iron, such as commercially available Z208 and Z248 electrodes, and adopting a hot welding process are effective measures to overcome the above defects, but the warm-up process of hot welding is long, the process is complicated, the energy consumption is large, and the production cycle is long. Labor intensity is high, which undoubtedly increases the production cost of castings

Method used

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  • Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod
  • Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod
  • Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Implement according to the following steps: First, weigh the following components by weight percentage: G 17%, 75Si-Fe 57%, Ni 15%, Ti 2%, Al 6.0%, Bi 2.1%, Ba 0.3%, Ce 0.5%, RE 0.1%, mix the various component powders weighed according to the above ratio evenly to get the flux core powder; select the H08A steel strip to cover the flux core powder, and then use it on the YHZ-1 flux cored wire forming machine The raw wire with a diameter of Φ6mm was prepared by the steel strip method, and the raw wire was drawn by a Φ5.5mm die and a Φ5.0mm second die to prepare a Φ5mm flux-cored gas welding wire.

Embodiment 2

[0017] Example 2: Implement according to the following steps: First, weigh the following components by weight percentage: G 17%, 75Si-Fe 60%, Ni 10%, Ti 4.8%, Al 5.2%, Bi 0.8%, Ba 0.1%, Ce 1.8%, RE 0.3%, mix the various component powders weighed according to the above ratio evenly to get the flux core powder; select the H08A steel strip to cover the flux core powder, and then use it on the YHZ-1 flux cored wire forming machine The raw wire with a diameter of Φ6mm was prepared by the steel strip method, and the raw wire was drawn by a Φ5.5mm die and a Φ5.0mm second die to prepare a Φ5mm flux-cored gas welding wire.

Embodiment 3

[0018] Example 3: implement according to the following steps: First, weigh the following components by weight percentage: G 15%, 75Si-Fe 60%, Ni 13.5%, Ti 2.8%, Al 4.8%, Bi 2.5%, Ba 0.2%, Ce 1%, RE 0.2%, mix the various component powders weighed according to the above ratio evenly to obtain the core powder; select the H08A steel strip to cover the core powder, and then use it on the YHZ-1 flux cored wire forming machine The raw wire with a diameter of Φ6mm was prepared by the steel strip method, and the raw wire was drawn by a Φ5.5mm die and a Φ5.0mm second die to prepare a Φ5mm flux-cored gas welding wire.

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Abstract

The invention discloses a flux-cored alloyed cast iron homogeneous gas-welding wire which consists of H08A steel strip and alloyed flux-cored powder cladded in the H08A steel strip, and the flux-coredpowder comprises the components based on the weight percentage: 15-25% of graphite, 50-60% of 75 Si-Fe, 10-15% of Ni, 2.0-4.8% of Ti, 3.8-6.0% of Al, 0.8-2.5% of Bi, 0.1-0.3% of Ba, 0.5-1.8% Ce and 0.1-0.3% of RE, and the total weight percentage is 100%. The invention also discloses a flux-cored alloyed cast iron homogeneous electric welding rod, a flux-cored welding core of which consists of theH08A steel strip and the alloyed flux-cored powder cladded in the H08A steel strip, and the coating applied on the welding rod comprises the components based on the weight percentage: 20-30% of marble, 10-16% of potassium feldspar, 5-12% of scale graphite, 6-10% of clay graphite, 15-25% of 75<#> silicoferrite, 3-7% of 30<#> calcium silicon alloy, 3-7% of aluminium powder, 3-7% of ferrous powder,10-15% of white slime, and 0.8-1.2% of sodium carbonate, and the total weight percentage is 100%.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a flux-cored alloyed cast iron homogeneous gas welding wire, and also relates to a flux-cored alloyed cast iron homogeneous electric welding electrode. Background technique [0002] As special welding materials, cast iron welding wires and electrodes are indispensable in engineering fields such as casting iron welding and defect repair. Due to the high content of impurities such as sulfur and phosphorus in cast iron, low strength, and poor plasticity, its inherent solidification characteristics determine that during the welding repair process of cast iron, white spots and cracks are prone to occur in the welding repair area, especially under cold welding conditions. And the crack tendency is greater, which seriously affects the machining performance and service performance of castings. [0003] Use cast iron electrodes coated with graphitized coating on non...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
Inventor 翟秋亚徐锦锋
Owner 陕西普德尔新材料科技有限公司
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