Recycled gas-shielded flux cored wire component and preparation method thereof

A technology of flux-cored welding wire and gas shielding, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of scarcity of resources, etc., and achieve the effects of good moisture absorption, reduced welding fume, and reduced oxygen content in the weld.

Inactive Publication Date: 2013-01-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to this calculation method, the reserves of (natural) rutile in my country are not enough to maintain the application of 50 years, even more scarce than resources such as oil

Method used

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  • Recycled gas-shielded flux cored wire component and preparation method thereof
  • Recycled gas-shielded flux cored wire component and preparation method thereof
  • Recycled gas-shielded flux cored wire component and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment one: the chemical composition (weight %) of medicine powder is: the welding slag powder (TiO 2 : 65%, MnO: 15%, MgO: 5%, SiO 2 : 5%, Fe 2 o 3 : 6%, Al 2 o 3 : 4%), 36.1% natural rutile with a purity of 97%, 7% Si, 8% Mn, 0.5% Al-Mg, 11.52% Na 2 CO 3 , 5% Mg, the rest is iron powder, and the filling rate is 12%. (wire 1)

[0042] The welding slag after this flux-cored welding wire is collected, and is processed through aforementioned processing steps, carries out the secondary utilization of welding slag powder, and used proportion is: the chemical composition (weight %) of powder is: 28% welding slag powder (TiO 2 : 52%, MnO: 12%, MgO: 8%, SiO 2 : 9%, Fe 2 o 3 : 12%, Al 2 o 3 : 7%), 30% pure 97% natural rutile, 7% Si, 6% Mn, 3% Al-Mg, 10% Na 2 CO 3 , 3% Mg, the rest is iron powder, and the filling rate is 16%. (wire 2)

[0043] The welding slag after this flux-cored welding wire is collected, and through the aforementioned processing steps, th...

Embodiment 2

[0044] Embodiment two: the chemical composition (weight %) of medicated powder is: the E81T-1K of 35% 2 (E551T-1K 2 ) type flux cored wire welding slag powder (TiO 2 : 35%, MnO: 5%, MgO: 15%, SiO 2 : 15%, Fe 2 o 3 : 15%, Al 2 o 3 : 15%), 15.5% (natural) rutile (97% TiO 2 ), 2% Si, 6% Mn, 5% Al-Mg, 8% 8.85% K 2 CO 3 , 1% Mg, the rest is iron powder, and the filling rate is 18%. (wire 4)

[0045] The welding slag after this flux-cored welding wire is collected, processed through the aforementioned processing steps, and the secondary utilization of the welding slag powder is carried out, and the used proportion is: 26% welding slag powder (TiO 2 : 47%, MnO: 14%, MgO: 9%, SiO 2 : 12%, Fe 2 o 3 : 8%, Al 2 o 3 : 10%), 22% rutile (97% TiO 2 ), 2% Si, 7% Mn, 4% Al-Mg, 8.85% K 2 CO 3 , 1% Mg, the rest is iron powder, and the filling rate is 17%. (wire 5)

Embodiment 3

[0047] 30% E91T-1K 2 (E551T-1K 2 ) type flux cored wire welding slag powder (TiO 2 : 55%, MnO: 10%, MgO: 12%, SiO 2 : 12%, Fe 2 o 3 : 5%, Al 2 o 3 : 6%, 20% rutile (97% TiO 2 ), 6% Si, 3% Mn, 4% Al-Mg, 7% K 2 CO 3 , 3% Mg, the rest is iron powder, and the filling rate is 14%. (wire 6)

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Abstract

The invention discloses a recycled gas-shielded flux cored wire component and a preparation method thereof, which belong to the field of welding. The recycled gas-shielded flux cored wire component is characterized be comprising the components by the weight portions as follows: 35-65 percent of TiO2, 5-15 percent of MnO, 5-15 percent of MgO, 5-15 percent of SiO2, 1-15 percent of Fe2O3, and 1-15 percent of Al2O3. The invention is characterized in that the invention discloses a method for collecting, processing and recycling welding slag of rutile cored wires to replace rutile; through the steps of coarse screening, coarse grinding, magnetic separating and fine grinding, the granularity and chemical components of the welding slag are driven to satisfy requirements; and then the welding slagof the rutile cored wires can be used as a cored wire component to be added into gas-shielded flux cored wires to reach the purposes of replacing or partially replacing natural rutile, saving resources and reducing costs. As long as the powder components and granularity of the welding slag after processing and preparing are in the scope of the recycled gas-shielded flux cored wire component, the recycled gas-shielded flux cored wire component can be recycled for a plurality of times.

Description

technical field [0001] The invention belongs to the field of welding in material processing engineering, and in particular relates to a flux cored wire component used in gas shielded welding and a preparation method thereof. Background technique [0002] Gas-shielded flux-cored wire has the advantages of welding rod and gas-shielded solid wire. It has high production efficiency and good welding process performance. It is widely used in the processing and manufacturing fields of ships, bridges, offshore platforms, and steel structures. This type of flux-cored wire mainly uses (natural) rutile to form slag, shape and stabilize the arc. The usual addition amount accounts for 20%-50% of the mineral powder, which is the main component of the cost of the flux-cored wire powder. The production of gas-shielded flux-cored wire has a great demand for rutile. At present, my country's shipbuilding industry is developing rapidly, and the consumption of flux-cored wire has increased sharp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
Inventor 栗卓新史传伟李国栋
Owner BEIJING UNIV OF TECH
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